SOVIET ENGLISH-LANGUAGE MANUAL ENTITLED MULTIPLE-RANGE PORTABLE MEASURING INSTRUMENT, TYPE TS-52

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A071200070001-3
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 41
• Document Creation Date: December 27, 2016
• Document Release Date: April 29, 2014
• Sequence Number: 1
• Publication Date: January 7, 1964
• Content Type: REPORT

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r
i\-11VATION REPORT �INFOR-MATIONiREPRT
CENTRAL INTELLIGENCE AGENCY
50X1-HUM
50X1-HUM
This material contains Lnformation affeicting the National Defense of the United States within the meaning of th,6 Aspionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized porton Is prohibited by law.
S-E-C-R-E-T
NO FOREIGN DISEM
COUNTRY USSR REPORT
SWUM' Soviet English-Language Manual
Entitled Multiple-Range
Portable Measuring Instrument,
Type Ts-52
DATE OF
INFO.
PLACE &
DATE ACQ.
THIS is UNEVALUATED INFORMATION.
DATE DISTR.
NO. PAGES
REFERENCES
50X1-HUM
January 1964
1
50X1-HUM
50X1-HUM
50X1-HUM
SOURCE GRADINGS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENTATIVE.
1.
-45
4
3
2
4cf-
a 35-page,English-language
manual entitled Multiple-Range Portable Measuring Instrument,
Type Ts-52
No publishing data were given.
50X1-HUM
The Ts-52 measures current and voltage in DC and AC circuits
with frequencies ranging from 45 to 1000 cycles per second,
ohmic resistance, capacitance, transmission level, gain, and
attenuation. It has special sets of accessories which
include two voltage dividers, a shunt, and a current
transformer which increases the range for measuring currents
and voltages in both circuits.
50X1-HUM
S-E-C-R-E-T
NO FOREIGN DISSEM
GROUP I
Excluded from automatic
downgrading and
declassification
STATE IDIA IMMY 1NMN IAM 1 NSA IXO NIC I
50X1-HUM
(Note: Field distribution indicated by "*".)
FORMATION REPORT
50X1-HUM
INFORMATION REPORT
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0
a
S-E-C-R-E-T
NO FOREIGN DISSEM
50X1 -HUM
Attachment
a
MULTIPLE-RANGE PORTABLE
MEASURING INSTRUMENT
TYPE Ts-52
a
a
SECRET I

Excluded from 'automatic'
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50X1-HUM
MULTPILE-RANGE PORTABLE
MEASURING INSTRUMENT
TY PI: LI-52
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irvripLE BA1G2:
PORTABLE
I fiASURPTO I T. TRT.IVT
TYPE-11,52
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� 50X1-H UM
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50X1-HUM:i',",1
li2PLICATION
1
�The Type 1i52 Mitiple-Range Portable Measurin7, Instru
cent is designed to meaeure the�follonizr'electrical values
. 0
curi-ent� and voltarsedn . . a,Li , in a.c. circuit's
4.rd'
With frequencies ranr:i.no: from 45 to, lOut.i, cycles per sec.,
ohmic resistance, capacitance, transmission level., gain and
attenuati on.
�
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. ' This instpument can be used .at ambl.nt, temperatures
from -10 to:+40�C and relative 1,.:4rlicity'9up to�504,.
The Type'..tb2 in-tr.,ment has lieen epecially -,desipmed
`.for radio aitd other weak current circuit neacurements.
. � The low. load requiz.rents of this Instrument.allcra
Iteaswrcrlents 'te. be 'taker. n the circuit? 'without noticoatas
sturba nee i%of tlieir � nor-e.) condi ti ons of Opera ti o.n.
connecti leas witi, a set of .renovab,le con-
.
nectars and protept wi.,,th'ebich the inetrumont -is furnished,,
atzke it possible Ix, carry out sietluratent3 at. hitthly
inc-
ceseibl�oints of intricate circv.ts am4.apparatue.._,
On request 'of the Purchaser, t.ite TTN 1452 i 113trume!Its
are ovailable'xith. speciAl sots of acces9;ries,
.The spocial seta include addithonel oquipment compris
inp; to voltae4e dividers; a shunt anda crreut transformer
tervin for-broadenim the range oi mup,Ar.i4Fef -ent of currents
and volterms in both d.C.and a..c. circuits..
Both nets, of equipment arepfournifiled' in 'Special tet..:1
*ctuzes desir-ne,d to aCcomodut,e the inst-nitent and its 'donee-
.
14ories. 'I".ne canes have reulovable coier.T supplied with rubb
riati%ets and-ard fftted .1;itn handles icr carryinr,.
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eftv,7Tics
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eoorcis tO all the requirement of
�
1845-52 relevant to instruments Of
o dIdons� group and of 1.6 class accuracy fo
4,1na'xid. 2.5 claps accuracy for a.c. inatrumen
. '
4pa.�1 tec.hnical 'characteristics of the instru� -.
6wa, in Table 1 be low.
1411ppar ..iiti5tte of 75:e ; 3 V; 7.3 '1;15 V;
with Type
' .41i1eaSurement-.0f; 30 V;150 V; 300 V;600 V;p516 vbltae
divider
td.c. 'voltage 7.5 kV
ioltarle � V;7..5 V ;lb V; 30 V;
with Type
160 V;300 V; 600 V; 1,64 volta-e
divider
- 6.0 *:�1
'or �
.t.
150 micreA;
15,DA; 60 mit; U.lt;1.5ii; with type
,� .Pi.4 enuet
6 A ;
mA; 16mA; 60a.A;0�) A; with tipe
'A 501 current
1 . ; 6 A; 30 it. transformer
resistance 10 kiloolws; 100 kiloohms,
1 mwohms; 10 mer.,ohms
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/tem
No. Description
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50X1-HUM
I.
Values "Totes
2 Basic error of instrument:
a/ for measurement of:
d.c.voltages and currents
b/ for measurements of,e.c.
voltages and current
0/ for measurements of
ohmic resistance .
d/ for ospacitance
� measurements
e/ for tranSmissicn level,
pttenuation and gain'
. tneasuroments
3 Load requirements of
instrument:
a/ current of full scale
.deflection for d.c. volt-
age measurements on rarren:
mV; 3.; 7.b; 15;'.)0;30;
160;300 and 600 volts; 50 micro A
not over
/LW,
not over-
12.572
�
not over
21.51)
not over
t2.51D
not oyer
t2. Em
on 7.5 kV ranrre 51.2
/ current, of full scale
deflection for p.c. vol-
tage measurements on
raws 15,3O,].30 ,300
and 600 volts;
on 6 kV range
micro
0.3 mA
0.512 mA
in per cent of
full scale valuk
in per cent of
scale length
in per cent of
scale length
in per cent of
scale length
A
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Description
alues
rotes
C/ current of full scale
deflection for c.c.
vOltart:es on 3 nd
7.5 V ranges '1 !nik
d/ drop in,voltage on in-
strument terminals when
.metasurir d .c. current
:on 150 microA to 1.5 A
ranti.;es. not over 0,.4 V
ditto, on shunt
terminals ,for measure-
lpepte op .6 and SO A
i'anges 75 mV
drop�in voltage on
:instrument terminals
.*hen meet sUring s.c. cur
rents On 3 mA to 1.5
t � �
. .tanges not Over 1.5 V
ditto:, on traneformer
terminals for measure-
ments On 6 'and 30 A
ranges not over 0.1 V
:..ampirr time not over 4 sec.
5 ..cale lewth /max./ 85 mm
. Test voltage for insulation
of electrical circuits
with respect to casing 50-cycles, 2 eoff.
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tem
Description
V slues
"Iotes
7 . Overa1.1 dimensions of
. .
instrument 110 x 205 x 80 r4a)
8 Weight .of instrument not over 1.3 kg
9 Overall dimensions of
carrying case: /normal
set of accessories/
10 Weight of instrument,'
carrying case and acces-
sories /normal sot of
accessories/
MO x 200 x 100 mm
not over 2.7
krt;
11 Overall dimensions of cavry-
ing case /special oat of
accessories/. 330 x 295 c 100 an
12 Weiht of instrument, carry-
ing case and accessories is
/special set of accessories/ not over 4.7 lirt,
The basic errors of the instrument will not be exceed0
when it is employed under normal operating conditions, with
Out the voltage divider, shunt and transformer.
Normal conditions for these instruments are:
a/ horizontal positioning of the instrument;
b/ ambient' temperature t20 500,
c/ for all measurements of a.c. current and voltage ati
frequencies between 45 and 500 cycles per sec, on all the
ran3es, with the exception of the 600 V range, and at fre-
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quencies between 45 and 200 cycles per sec. on the 600 V
range, the wave form of the current and voltage is to be
sinusoidal, ie., any instanteneous value of the current or
voltage should not differ from the corresponding instantane
ous value of the first harmonic by more than t213.of.the fi
harmonic amplitude.
Under conditions of operation other then normal the
readings of the instrument may suffer a change.
a/ The change in the readings of the instrument, on ar
,rarre of meesurement, due to changes in ambient temperature
from 42015�0 to any temperature between limits of -10� 'end
t4000, will nqt exceed the basic error values given in Tabl
for each 1000'change in temperature and each correspondin
range of measurement.
b/-For measurements of a.c. current and voltage in a
region of frequencies beyond those given above, the changes
in the readings'will not exceed �2.5% of full scale value
under the following changes in frequency:
/ up to .1000cp.s. - on all ranges of measurement
of a*.c7. voltages, and Currents with the exception of
- the 600.0701t range.
2rUp to 'O - on the 600-V s.c. voltage range
a/ The,thangedn.the readings of the instrument duet
the influence of an external magnetic field of 5-oersted
strength produced direct current or a 50-cycle elterne
log current will not exceed '1% of full scale value. The in
.Strument, when connected as an ohmmeter, microferadmeter or
a transmission-level measuring device, willg.ve under there
conditions, readings whiCh ere not changed by more than
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of scg.:.'.a fo: th correspoodix- r:ctales.
-I The ci.anr.t; in the readin-:c of tan� instrar, at, due tu
an i exli:;Lti_ai of 10 de". from the iorral ;horizontal./ pot:1-
tiou a any lirection will not excood 11.:35� of ecele len-t..
t:,e irstrument is connected to a voltae diii Or,
shunt or current tran:sf.ormor, the errors of the acceurcriEas
ore, addc.I to tae basic. errors of the instrument.
mip.-..surezents of'resistanco on the 10-lciloo:-.r, 100-
kiloohm I :neon. ran-es, a 1,3 V type EG-0.25 dry cell
Installed inLide the instrulent ?erves Ls the source of rvue-
ply. The -eximum current drown from the dry cell is equal to
7.5 ca..
To measure resistances on the 10-meriolun ra-r. , .:1tJ
eXte ril source rated for la volts is necessary. The
L'EXi 2.1tn ,:,,rrent drawn from suly equals J. rat.
ioz capacitance P.encurnments, on oxtarnal b&)-cycle,
12A-volt �latirce of is r-triuired. The raximum current
.3rawre fro' r supply equal:.�
III, VOLUME Or ,ELIVERL-
Tho Lo2 Instrument i3 chipped complete with a norma)
or special set of acces-;ories.
7ormal set volume
1. Tftie
Type '-0,23, -1.3 V dr: cell, uit i
3. On'cf.'. an -lead with connectof.', o
.4'�
2
4...:Lat r,-!orrebie le*6 oi ctor 2 7 C:
2
ter.:inal tlips
�
. �
,
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IND
o.
Reftionlle probe
� .
7. I, on eri ;ti on ani r7 i ct E . I copy
E. I,1%tru-ent certificate � � . . co,Jj
brryi case lor i 3truMent awe: acctJ32oriea 1 dc.
Special set vol4we
1. Type 2 1-4.1trunt 1 pt.
2. Type ,EC-0.25 V dry Con, built iN . 11 pc.
3. JoLnction iced Iith collectors, one-rutra
lerrtti. 2 pen.
4. ilat remova'ald leal conetor 2 pcs.
5. Allimitor ter=ir.al clips 2 pco.
b. 2.3,-.ovable probe
2
7. Ceparatef, volta7e iviler rated
for i; kV a.c.
, pc.
fleparate, ty:3(5 P-516 volta7e diviLeir ratcd
for 7.5 u e 1 pc.
Type 1,,501 current transformer, rated for
a?td .50 A a.c. 1 pc.
.10. Separate, calibrated type P-;)1.4
rated for C and ce A, 7b TV, d.c. � 1 f4.
11. 1..eacri,tion DA operati91 instructioas.
12. OertifiCate I copy
l. Uorryin, case for'instrutleJt and accorien 1 pc.
9.
'!ote: The instrument will be shipped with the z-peoial
set of accescorics only ol special reque4 of
the Parcilascr.
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- 9
IV .,OU'ARAVTF,E
The period of t;iiarantee of these instruments is equal* t
to 18 months from the date of shipment from the Marker's
Works. The instrument, when employed under normel conditions
of operation durinn; thiii period of time, is to satisfy all
the technical requirements specified for type 1452 portePle
�multiple-scale instruments aind also required by U.S.S.R.
Standard rim 1845-52.
. V ..PREPARATION- Op INSTRI11.:MT FOR OPOIATIOV.
Th GENERAL OPERATITIG DIRECTIONS -
To obtain correct. results when taking measurements and
to .protect the iostru. ment from damage observe the following �
directions:
,\ a/�before taking readings place the instrameiht in a
horizontal posi,tion,
.b/ set; the 'pointer of the instrument to the 1 Ude].
scale division with the aid of the�zero corrector.
c/ set the operation-mode switch to one of two positiors
- for measurement of direct currents 5nd voltages� ,
and also resistances..
- for measurement of alternatirr; curtents and volt-,1
arr,es, capacitances', attenuations and .transmic,-
sion levels;
d/ set the rarge-selector switch in the zero position.
when the magnitude of the current or.voltnge is questionable
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start taking the msasurement. on a 'maximum range and then �
change down to the most suitable ranle.
� ,
Le not oporate the switch when the instruinent is carry
ng�a current, especially when measuring. currents of conside
eble magnitude in high volta7,e circuits, as failure to obser
this wailed to damaze of the instrument
inr, of the switch contacts.
Twitching over of the ranges with a
as a result of bar
current flowing,
len�measurinl voltages is relatively rafe for the instrumen
the same�apPlies, to switch-over of the ranges when measuring
mall currents /up to 40 mA/ in circuits of relatively low
/oltage /100,200 V / and rhen switchieg ia' done duri.!e the -
:.-easurement of resistance on the xl; x10 and x100 ranges.
It is absolutely impqrative that the instrument be swi
hed off prior to transfer fron7 one kind of r essurement to-
notherv /Or example, when asn7ing over from voltage to cur-
ent measurements, from capacitance measurements to resisten
!eaeurements,
e/ en completion of the measurements it is desirable
hat the range-selector switch be set to the "600-B" /6004/
osition. This safeguards. the instrument against dieastrous.
emarre in s great many cases,. again focussing.attention upon
he pOsitions of the switches on the instrument.'
onneCtion of the instrument to an electrical circuit
or the telAng of measurements is to he accomplished by means
f the connection. leads with removeble connectoru, removable
llig,ator clips .and attachable probes furnished with the in-
trum en t
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The, connection leads leads are connected to the instrl
mer4 by jack pluP:1 or by reTovable flat connectors slipped
over the pluorr,s; Per*ovablb flat conllectors are to be :1-ipperl
over the ends of the 1.eads to be attaahed to the cirJuit fo
the taking of weasure.!,ents. Alli7ator Clips ore to bc efts-
ched to the ends of thQ leads whenever it is derireble to
maintain the contact for a loner Interval of time. ror
tory or short tire contacts detachahle probes are to be slip-
ped on tho ends of the leads. ,
When measurements ore to he teken with'u :.eparbte 101-
tale divider, itis connected to ti,e L2 in:Itruoest iti ti
aid of itm own 106do. ,
A removable connector, 'clip or ettueLable probe, o,�
necessity, can.be fitted on the connector of the sopOrate
voltale divider.
In-takine: measurements with the aid of a voltage
der, take care to observe ell safety regulations relevant to
workinl with hi.lh voltages.
In particular', reliably ground the w.ur...=" terminal of
the voltale divider.
The � voltage divider is to be 'rasped only at the broad,
part of the body up to the guard shoulder without cominr
into contact with the connector. reither is it allowable to
1
touch the terminals of the ilstrument.
. Below is given a description of the .Tariour leesure-
ments which. may be taken with e to 1,-62 i notruuent. All]
operations are to bc carried ailt in the order given in the
'text. 4
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12
VI. USE OF THE INSTRUMENT
1. Current and voltage measurement's!
Set the Operation node and range-aelecter switches as
instructed above.
The two terminals marked:" and"" are to be used
*
for the measurethent_ of d.c. and a.c, currents a* voltatea
on 411 ranges of the instrument /the mtii.king tn. H i; 10
cated between these terminals/.
The readings of the value under ,measurement are to b
taken on the accordingly marked scale,.
. 2; 'Special cases of current and voltage -measurements
a/ Measurement of direct curre4t on 6 and 30 k ranges
with a separate type P-514 shunt.
Plug the :shunt with the aid of its prongs, into the
jacks of the "-" and terminals of the instrument.
Set the switches on the instrument to positions cor-
responding to the:measurement of a 75 ml d.c. voltage;
The current under measurement is then-passed through
the shunt at the. "-" and "6A" terminals /6A range/ or at th
"-" and "30A" terminals /30A range/.
b/ 1.1,easurement of alternating current on 6 and. 30A
ranges with a separate ,type 1-501 current transformer.
� Connect the current transformer terminals "15 mA" to
the "=" and "t" terminals of the instrument.
'et the switches of the instrament to positions cor-
responding to the measurement of a 15 mA alternating cur-
rent.
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114WW, oh�..:e.7-4-z. � _
� ?,4`.� 7-
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The current under 6easurement is pasned through the
CU. -*
rent,transforMer, at the terminals :9e and �"6& /GA range/
or at :the terminals "4if" and "30/1" /30 A mule/.
e/ i'eaot.4,rement of a. i.e. voltage On the7500. volt torli
� 6' '
with a separate type 1%516 voltage divider.
The type P-316 Voltt;ce divider:, epclOser in a moulded
plastic%casingc has two conn!-;ction lds !or connection to
the instrument, the lead connectors being mae:pd with the.
umberc "0" and. "1".. To the circuit under tent the voltage
4 '
divider i connected by means, of te:rminal on. the '"0"
17-='� �
lead and a metal connector. Terminal on the r0" lead
iooi /tended for �attachment to that part' of tho circuit under
. 0 .
meaeurement which. is either grounded or the groundino. of
which is permissible. *In'the latter case the. terminal:
of .the voltage divider is ,Y.rounded in advance. '
lt is not, permiqsible to take the measurements whop .
one oi the two points of an electrical circuit across thi.ci.
,1 0
the voltageiis to be measured is not grounded, or when groline-
ing of these points is not allowable.
The connectors ..ptu and "1" of the'voltave divider
'leads are to be connected to the "-" and "t", terminals of
the instrument oo that, when the oinus side of the circuit
under test is rliounded, the "C" co.lnector of the voltage :
(Wilder connected to the !L.," terminal and, then the plus
:side id 71rounded, to the "t" terminal of the lestrument.
. Set the switches of tho instrument to the.position-
corresponding. to the measurcuent .of a d.c. voltar,e of 15 V.
.' Only after s:11 the above directiono for connection of
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and operation of the suitehes have been fulfilled*
tiA3 MOttil C001:100tOr can be attached to the second point of
the circuit ,under test.
nen measaring high voltages observe all acting safety
regulLtionn.
� The voltar,e divider is to be grasped only at the broad
part of the body up to the guard shoulder aid without com-
ilto contact uith the connector.
d/ reasurement of p.c. voltage on 6000 V range nith
separate type P-515 voltewe divider.
� The type P-515 voltage divider, similar to the type
P-516, is enclosed in a mtrulded plasti: casing and is provid-
ed uith two leads, the connectors of which are ,,arked with
the numbers "On and "1". To the circuit under test LLB vol-
tage divider is connected by means of terminal on
the "0" lead and a metal connector.
The terminal on the "0" lead is intended for.
attachment to-that part of the circuit under measurement
uhich is tlither grounded or the ,iroundinl; of which is able.
-'
In the latter C830 the "--I--" terminal of the volta-e
divider is to be grounded in advance.
� It it; not permissible to take measurements, on one of
the two points of an eleotrical circuit across uhich the
voltage is to be measured if the circuit is not grounded
or does not permit groundin.
The voltage divider lead connectors marked "0" end
"1" are respectively connected to terminals "-" nd "t" on
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the instrument.
at the switches on the instrument to the positions
corresponding to the measurciment of an a.c. voltage of 15 V.
Only after all the abOve directions for connection of
the leads and operation of the switches have been fulfilled
The metal connector can .be attached to the second poi
of the circuit under measurement.
i'lhen taking measurements at high voltages observe all
acting safety r!Sglilations.
- The.voltage divider is to be grasped only at the broa
part of the body up to the guard shoulder and without comi
into contact with the connector.'
el IlSasurement of an (Lc. voltage with superimposed
.c. voltage.
Set the switches on the instrument into the positions
employed for .measuring a.c. voltages. The voltage under
measurement is to be applied to terminals "-" and Na".
' In such cases a 0.2 mfd capacitor is connected to p
through.
The voltage of the d.c; component is not to exceed
400 V /i.e. not to exceed the rated working voltage of the
capacitor/.
The chemge in the readings of the instrument due to
the capacitive reactance of the capacitor will be less tha
if the product of the frequency /in c.p.s ./ and the ful
value of 'the' selected range /in volts/ is Over 3000 for al
ranges beginning with the 15-V range and upward.
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411
- 16 -
3. Measurement of ohmic resistances '
a/ Measurements on the 10 kiloohm, 100 kiloohm and
1 megohm range's. A dry cell installed within the instrume t
serves as the source of power supply.
Set the operation-mode switch to the 'JL" position.
Set the range-selector switch to the "Kg1", "Ka10"
or."Ux100" range in accordance with the expected value of
the resistance. Solidly shorts terminals"-* and "+" of the
instrument across each.other and by turning the "zero-ohms
corrector" knob set the pointer of the instrument to the
zero division on the "10e* scale /if this setting is un-
attainable, replace the type ibBG-0.25 dry cell installed id
the instrument with a new cell or one of siMilar dimensions.
The range of adjustment of the "zero-ohms corrector" knot
Is designed for a dry cell voltage ranging from 1.25 to
1.63 volts.
Remove the jumper on the "-" and "4" terminals of the
instrument and connect them to the resistance subjected to;
measurement. Take the readings of the measured resistance
On the "!40F"s ce1e'
b/ Measurements on the-10%megohm scale. �
' An external battery, with .6 voltage of 15.5 to 19.5
Volts is to serve as the source of supply.
Set the operation-mode SWitch to the "A" position
and the range-selecter siViVa 0 the "Fr01000" position.
Connect the battery to the "7" and "t" terminals of the
instrument /with observance Of the polarity/. Fy turning
the "zero-ohms corrector" knob, set the instrument pointo
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f.k .1 Y1. ' �
- 17 -
to zero on�the'"K4k.F" scale. bisconnect one pole of the bat
tery from the instrument terminal and connect the resistanc
subject to measurement between the pole of the battery and
the instrument. terminals
Take the readings on the ftWE" scale directly in me
gohms
. 4. Capacitance. measurements-
� A 50-cycle a.c. circuit with a voltage of .190 to 240
volts is to be used as the i3ource of supply.
� Set the operation-mode switch to the position an
the range-selector switch to the "k,F" pozition.
Connect the supply circuit, to the "-" and. "t" terminal
of the -instrument. Turn the "zero-ohm corrector" knob to set
,the pointer to zero On the ft4LF" �scale.
The capacitance under measurement is to be connected
to terminals " -ft and ."td'" of the instrument.
The readings are taken an the "K.sticii" scale directly
/ � I
in microfarads..
When capeCitances of low value /of the order b000 to
10000 pieofarads/ are beiner, measured, almost full supply cir
cuit voltage iS applied to the capacitor. When large capaci-
,
tances are meaSured the voltage on the capacitor under measu
retUent is reduced. ��
;
� Shorting of terminals "-" and "ALF" /for example, on
breakdown of the capacitor under measurement/ is not danger
for .the instrumenti�
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,
�
�
�
� le �
;), '!.:eartinpient of transmission level �
The value of a trar.s��ie.lion level is .claracte,ti,z'od.Ity-
. .. .
tile lor.,aritial Of t-,..e ratio between a voltarce..112:on-*.�6/ten
load, or :La iiik)ut P2 consumed by a given load i�nd tii votirsX0
or inputt. Po, renpectivel; taken as rerpreraolt.
. Volta:re-ratio transTrir-'ion i level- ni.:*..26,�-164,...�_.b
- * '� ..- . H� kE'.4;7,4'
-4- ..,, r.:. .-; :-.4,..14,;,. �
Power ratio transtisei on level ,Pii.::- lc) .I.*:-.:,.-.4, .-db . �
.'' ' � 1P76"'.1% '
- -,� ''':�-�'?'-'-''''Kti#:C-:: .'"C'S'
Lependinp,, upon the selected referenee_ valued, tit-,4000.8..
sion level is defined as absolute or relative ..,,
If a voltarw U0 = 0.77b V or, power Po F. 1 infiliwatt are
taken as reference values, the correspondirv. transmission le-
vale are considered as absolute.
Absolute volts 3e-rati o transmission level
PABIlv/20 10P4oUlig db
Lbsoluto power-ratio transmission lorel
�P = it'd loff; p2
db
All/rp/ 0.0C1
The oorrespondiuT. tre.ission levels are tormed as
.relative when the assumed reference values corresiiond to the
:voltar.e or power at some ctl er point in a circuit',i
for exerrpli
,the volta7e ti on the ilputs of the device or cirSuit under
-tir....t /at the outpats of wic::. a liven load in carried/ or the
Ipower Pi fed i 7 at the i riputh .
Relative vol. tu-re-ratio transmissi on level ,
P - 20 l r2 o-, � db
",:rT/. "
Uo
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't1; � - �
�
�
�
- 19 -
Po
30 lo 7; db
7rpi 131
.rom the above relations it ,is evident that the relit-
tive transmission level between two points, '1 and 2, of's
Circuit Is equal to the diaerente i absolute levels
betWeen these points.
's/'1,basurement of PAHhav/ -absolute voltivw-ratio '
transmission level. 1
The decibel scale on the V,62 instrument is so r,ragivat+
ed that zero on the scale corresponds to a voltage Of 0.775T.
.ResdinTs on the decibel scale marked "db" thus give '
dizq:ot absolute volta,-e-ratio transndssion level readings.
1
�To.obtain absolute voltar.,e-ratio treasmisrion level 1
readin7,s, .set, the operation-mode switch to the "4141" positio1i
apd the, range-selector switch to the "3V" or "7'..5. V" ranci,e
position in accordance with the.voltarr,e across the circuit
section under test.
�Connect the instrument to the circuit at terminals
"-" and "+".
:Take the reetdin,ls on the "db" scale, the abNnate
vo-iLta-ratio transi.snion beinf,, equal to the resairr on the
.V" scale. ahel taken on the 7.5 V scale, the readine!, is
to be increased by 6 db.
� It is to-'be borne in mind that the resistance of the
instrument on the "3 V" ran7e i. equal to :3000 ohms, on the
6 y rarre, it is 750.). ohms.
The measurement can -ae teren only when the insertion. ,
of such resictsneo values i .to t,ie circuit does not 7reatly
affoct ,:or"-al circuit coalitions.
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�
�
-20..
b/ Measurement of ,-relative voltage-ratio :
transadf3sion level.
, The relative volta-r,e-ratio transmission level PoHirv
between two poihts 1 and 2 in a circuit is equal to the'4f
ference� between the absolute transmission levels PA1.12,and"
at each Of these points:
Pq Pj2 -
The 'absolute transmission levels :PAII2 and P et
i.
points 1 and 2 are ,to be obtained as direaeci above.
c/ Measurement of Pix - absolute power'�..ratiOkransmi
sion level.
The power taken by a P7iven load equals:
P2 =
where U2 . voltage across the load
A
" resistabce of the load
2
Power input Pi 2 0.001 w corresponds to a voltage
=`11 0.775 V across a resistance R1 1", 600 ohms.
On the basis of the above relationships the absolute
power-ratio transmission level can be expressed in the fol
lowing form:
PAm = PAH - 20 le07,
� 600
When the measurements are to be taken, have in mind
that the load resistance is shunted by the instrument and
correct readings � are obtainable only when the load resis-
tance is considerably lower than that of the instrument.
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�
�
-21. *I
d/ Measurement of Pou - relative powet-ratio transmis
sion level.
The relative power-ratio transmission level Poz,beiiweeln
two points 1 and 2 of a circuit is equal to the difference I
between tne absolute power-ratio transmission levels at each'
of these points, or: 1
PoI = 'Am2 PAmi
The absolute power-ratio transmission levels, Pan
ALI2
PALLI at points 1 and 2 are measured as directed above.
a/ Measurement a volta5e and power gain.
The volte gain factor is the same as the relative
voltage-ratio transmission level.
The power gain factor i similarly, is none other than
the relative power-ratio transmission level.
9 iteasurements of these values are to be taken as
instructed above.
6. Measurement of Communication Circuit
Attenuation
a/ Measurement of
Ul
bp = 20 log -----20-
0.775.
effective attenuation bp
. 112
log
10 1011 -
0.775
e ecross load R1 directly connected
where: U1 voltag
2
to a generator.
Eo e.m.f. of lenerater
U2 - voltaff,e across loud R2 connected to the gene-
"rator with the aid of the line under test.
.112
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;qt.- 71; � �
�
� - 22
Ul � .
The values 20 lorf and 20 1or, are the
0775 0.775 '
I absolute volta-4e-ratio transmission levels and are to be
measured as directed above.
The value of 10 log Ai-- is determined by calculat
R, �
ion. 'Note here, that, if the input resistance of the line 1.
equal to the internal resistance of the generator, it is
. used,as load R. Mien this is not so, load R* is to be set
up by some other deans.
To obtain correct results the values ofRi and 112are
to be considerably lower ;than the resistance of the instru-
ment /respeCtivelY equal to WOO ohmsfon ",5 V" runge and
7500' ohms on "7.5 V" range/.
' h./ Measurement of introduced attenuation b
. .
U2
hB = 20 100; ZO 10-----
0.775 0.775
voltage across ldad RI. connected directly
to s generator
voltage across load R2 connected to the gene-
rat or through the line under test.
The values 20 lo-, 07775 and 20 log 51i-5 are none
other than the absolute voltaq,e-ratio transmission levels
and are measured accordinly.
,To obtain �correct results, the value of R2�s'nould be
considerably less than the resistance of the instrument
. .
/respectively,'5000 ohms on. the "S V" range a nd 7500 ohms
On the "7.5 V" rsngei.
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�
A
�
-23
Line attenuation measurements are ,,teetely siMplif
.. ..
load R2 equals 600 ohms arid a standard n:enerator With at
terual resistance of 600 ohm is employed /Note here that.ie
,.�..
der these conditions the effective attenuation and introduce
attenuation are equal -- bp = b/3!.
In such cases it is convenient to use the "db" range o
the instrument. As was stated above, the instrument,on this
range has an internal resistance of 600 ohms and cab be emp-
loyed as :load R2.
Attenuation measurements amount to the followirg:
Connect the instrument for measurement on the "db" sca e
r,.....,
faet the operation-mode switch in 04-P position and the ran ,e
selectOr switch in the "db" position/.
,,.
First connect instrument terminals "-a and "t" directl
to the generator terminals with the line disconnected and
take the first readinT, on the adb" scale. NOII connect the
1 instrument to the rlenerator th;ouph the line under test and
take the second reading on the "db" scale.
The attenuation of the line is equal to the difference
of the first and second readings.
7. Dry cell replacement
To replace the dry cell, move the small cover on the
bottom of the instrument to one side.
After removal of the used cell, insert the new Type
IBC-0.25 cell in its recess with observance of the polarity.
The positive electrode brought out in the center of
the cell should be faced in the direction of the "t* mark on
one edge of the cell recess;
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�
�
�
- 24 -
VII. PERIODIC CIIECKS
� Check the accuracy of the instrument periodically, not
less than once a year, by the methods prescribed in the act=
ins instructions of the Committee of Standards, Measures an
Measuring Instruments of the U.S.S.R. Council of Ministere.
� The readinms on all the current and voltage ranges of
the instrument are to be compared with the readings off-a la-
boratory standard instrument of 0.5 class accuracy for the
dc. ranges and 1.0 class accuracy for the a.c ranges.
Select the laboratory standard instruments so that the
full scale values do not exceed the corresponding full scale
values of the instrument being checked by more than 2.5$.
Check the resistance ranges of the instrument with the
aid of a decade resistance box connected for this purpose to 1
,
the instrument. The value to be checked for on the scale is
to be Set.to on the resistance bOX. The error is directly de
termined from the reeding on the scale of the instrument. Th
alloWable.error of the resistance box is not to exceed nok,
a
of ihe nominal values.
: Checking of the capacitance rarge.is carried out similtir
to that on the resistance ranges, a capacitance box being emp-
loyed in place of the resistance box. The allowat;le error of ,
1
the capacitance box is not to exceed 1'1* of the nominal Yalu 6
for capacitances up to 1 mid, and lb% for capacitances up! tor,
10,mfd.'
The decibel -,cale is to be checked by design voltages
in accordance with the Table below.
L TT
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Lecibel scale
division to
be checlr.ed -10
-5 0 t10 e1.2
Volta:30 to be
applied to instru-
ment terminals,
volts 0.245 0.4:(6 0.775 1.38 -2.45 .1.0
To check the instrument, arrarre it for "db* rea2in&!
apply tie volte7e3 iver ifl the Table to iti terminals..
The errors in the restlinr.s are daterminea lirectly
Iron the readinr:a taken on thc i letrument.
Vi11 S TOR AG E
These instruments are to be stored in closed rooms at
temperatures ranginl from *100 to 43500 and a relative
'humidity below 80"-.. The air in the room should be free of
'corrosive fumes or vapours.
ix,. OHARAOTERITTIC rATJJT DTUEIB
T1i01.:S OF Rre,...71)Y
The followinr most cornmon faults may be fund�to oc-
cur durinc,, service of the instrument: broken re i star con- ,
nection, bro%en connection of ohmeter zero-corr,actor rheo-1
stet , dirty inter-contact spaces in ti.e ro nr-..e-se le ctor
twitch, depoaits of f.netallic dust due to wear of the bruciils
and failure of a 7,errnanium.ractifier.
�t. bro!:en resistor connection is easily detected by
failure to ottaia a rsad.irr, on the correspondin7 volta-;e
ronle. A broken rheostat connectio:1 results in fed Luz%) to
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�
�
- 26 -
tain readings on the current renges and on alA a.c. voltag
ares /the d.c. voltage reading's will have an accurucy with
p 10%!.
A broken resistor connection in the universal shunt
.positions 1-10, 40, 11,, 12, 14, 15/ will lead to approxime-
ly.the same.results as a broken connection in the rheostat
ircuit. Soiled inter-contact spaces /n the range-selector
itch result in obtaining of the same indications on severe
anres, /for example the 150-, :)00- and 600-volt ranges/,
hen one and the same voltage is applied to the. instrument.
. Failure of the.germanium rectifiers is detected when
else readings are obtained on all the a.c. current and .volt
,e ranges and, correct readings are obtained on the dc. cur..
nt and voltage ranges. ,To find the faulty components it is
onvenient to refer to the elementary circuit diagram of the
astrament :/see appendix/.
.To remedy these defects the instrument is to be opened,
or this remove the four screws which secure the bottom. of
.e casing and remove the bottom. Noiv.back out the three
crews opposite the terminals and the two screws on the op-
.
wosite side of the casing. Take out the panel on which all the
circuit components are assembled. When this is being done, the
terminals and the renrre-selector switch knob remain on the
casi al.
With the aid of the virinc,; diaP:ram and the numbering 04
f-taie instrument components, any desired component is easily
;.;
,cated on the panel. liefeets are detected by visual inspectio
and by approximate measurements, for example, with an instru
bent of similar type; Questionable components are to be ramo
ed
and thoroughly inspected. Defective parts are either
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',144
repaired or replaced.
When the instrument is open, protect it against dust
and dirt. .
. After repairs which involte changes in the parameters
of the instrument /for example, after replacement of germa-
nium rectifiers, rewinding of the moving coil, etc./, the
instrument is to be partly or fully adjusted. Below are gi*,
all the operations carried out for full adjustment. Depend
inc upon the nature of the repairs, the adjustment can be:
.commenced at one or another stage with observance of the fol-
lowing sequefie �/in the description of the operations given
below, the numbers enclosed in parenthesee coincide with the
numbers on the Wiring diagram, in the specification and in
the instrument/.
. 1/ All the.resistenees, with the exception of the ad-
justing reeistances /18, 19, 22, 14, 15/ and capacitors /58,
to 61/, are to be adjusted to the values given in the speci4
fication.
2/ If the microammeter was repaired, adjust: it so that
Lull.scale deflection of the pointer corresponds to a cur -,
rent of 15 microamp, passed through the moving coil.
When this is done, the resistance of the moving coil
is not to exceed 490 ohms at a temperature of .2000.
/Generally speakitig, the instrument will likewise
operate in cases when the movinm coil has a resistance up
to 600 ohms.
The temperature error on the 75 mV scale will, howe e
exceed permissible value and will be equal to approximately
1.8% for each 1000 change in temperature./
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. 28 -
� � The beginning and. 'end of each scale is to be 'marked
with a 1.03t
3/ AdjuSt the total resistance of microammeter /50/
and resistor j14/ to 600t3 ohms at a temperature of t20�C.
If the adjustment is carried out at -a temperature other the
t20�C, the value of the resistance to be obtained .when adju
in7� can be determined by calculation with the aid of the
following formula:
A50 All .7- 600 1.8 4-20/ .1:3 ohms
where t tempepiture at which adjustment, is made.
4/ Adjust the sum of resistances /15/ and. /16/ to
,)/
20001.4 ahme /resistance 16 - ohmmeter �zero-corrector pheo-
stet/. �
5/ Switch the instrument to one of. the higher 0,c.
voltage ranq,es /150, 860 or 600 volts/ and connect it to a
50-cycle a.c. voltage, and, with the aid of a laboratory
standard voltmeter., set the voltage to the full scale value
of the range selected.
Pow adjust resistance /19/ such that the microammeter
pointer will indicate full scale value under the above con-
ditions.
6/ Switch the i estrullent over to the 15 V a.c. voltug
range, connect it to a 50-cycle a.c. veltacw source and,
with the aid of a. laboratory standard voltmeter, set the
lioltarle to 15 volts on the terminals :of the instrument
under test.
*low udust. reeistance /22/ se .that the MicroamTetor
pdi n!Or , under thebe conditionp givee, a ul1 scale roadil
'
�
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�
-29-
�
7/ Switch the instrument over to any one of the al
nating current ranges and connect it to a 50-cycle a.c.
source and, with the aid of a laboratory standard ammeter,
adjust for a current corresponding to full scale value of
the selected range.
� Resistaice 18 is now to be adjusted so that the'point
f the microammeter gives a full scale deflection udder the
above conditions.
The� above operation is the last adjustment to be made
On completion of the adjustments check the lull scale defied-
tion on all the ranges .of d.c. and a.c. voltage and current.
fpr occur
check the resistance and capacitance ranges.
coincidence with the full scale divisions. Ale
k. APPENDICES
The present Description and Instruction include:
' 1. Elementary circuit diu7ram. �
2. VTiring dia..2:ram and specifications.
The numbering of the circuit components is idential o
the elementary circuit diarr.ram, wirini7: diagram, and in the
instrument proper.
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,
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.
�
�
o
� 40
� �������
'o*
MOB
:2.1cntury circuit
1.! hoc. cij,�;. 2 3ide; ;
; ..; ./ met-, oiler ; 7 147; Li -lb; -11 J7J + We:El ; /30k.:
ollms at +20�3.; 4 rah
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�
artYlleritS ABWAXIK7
bat sicana.,*
ita ri Iv, di et.-xtor.
1 .tattprnative wiring for ilotion
'4 �
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�
�
1
1,
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Declassified in Part - Sanitized Copy Approved for Release 2014/04/29 : CIA-RDP80T00246A071200070001-3
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3
�
� 33 �
19
20
21
22
2.3
24
23
26
27
28
29
30
31
32
34
35
36
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5141.520.350
5.11A.520.350 tt
It
511g.520.349
5A4.520.351
Is
5RA.520.339
04.273.03o Resistor type
P701 p
to
6E4.273.034
6i1A:273.031
11
5RA.273.028
1!
Is
6.11,A .273. 023
It
273 .028
511;', . 520 .356 Coil
Is
511g. 520 .357
5RA. 520 .534 ".
6RA.273.030 Resistor type
701s
511`i'k .520.352 Coil
511.D, .520.353
1
1
1
1
1
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, 1
1
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6
.350110 ohms For adjastm ry(
89011.1.ohms
590t1:1 ohms
350t10 ohms For adjustment
30010.6 ohms
2940058 ohms
0.09 megohms Total residt.
of 25 and 48;
90*0.18
kiloohms
0.15 Liegohms 'Total resic t
of 26 and 44;
150t0.3
kiloohms ,
0.3 megolams � Total resist
of 27 and 46;
not0.6.
kiloohms
3 megohms Total resist
of 28 and 45;
3000t6 �
� . kiloohms .
3 megohms .
3 me ohms TOtal resist.
� of 30.65 art
� 41 .0001.1.2
ki� �ohms
232514.6 ohms
450019 ohms
28800157 ohms
0.6 mer,,ohms Total resist.
of 34 and 43�
600,i1� 2
ki 1�011r:is
7501'1.5 ohms
1731'0.34 ohms
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29 : CIA-RDP80T00246A071200070001-3
�
�
37.511,7�520.358 Coil 1 1750t3.5 ohms �
;
38 511A.5210.535 1 19520140 ohms
39 6RA.273.033 Resistor,type 1 0.2055 megohns Total r
701a sist.01
59 and-
205.5
kiloo
40. 511A.520.344 Coil 1 250'.5 ohms
41 Resistor 130-0.25-1 1 Adjusting r
rOCT 6562-53 � sister for 1
resistor 361
42 Resistor 30-0.25-1 ; 1 Adjusting i
rOCT 6562- resistor 29
sistor for..
resistor
53 '
43 Resistor BC-0.25-1 1 Adiustinl re
. rOCT 6562-53 sist.or for i
resistor 341
i
1
44 Resistor 130.0.25-1 1 Adjusting re.4
' rocT 6562-53 sistor for
resistor 26,
45 Resistor 130-0.25-1 Adjusting re-
rum' 6562-53 okstor for
. resistor 28
�
46 Resistor BC-0.25-1
MGT 6562-53
47 Resistor ac-0.25-1
FOOT 6562-53
48 Resistor 130-0.25-1
FOOT 6562-53
49 bllA .520 .339
50
Coil
1:easuring
movement
1
1 Adjustinl rel-
sistor for
resistor 27'
1 Adjusting re-
sistor for
resistor 39'
1 Adjusting re.
sistor for
resistor 25'
1 29400t58 ohms
1 43 Nicroamp.Total resist)
440=60 ohms of 50 and 14
6013 ohms '
at 20vC 1
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3
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Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3
INO FOREIGN DISSEM I
Attachment,
50X1 -HUM
GROUP 1
S-E-C-R-E-T Excluded from automatic
downgrading and
- I NO FOREIGN DISSEM declassification
Declassified in Part - Sanitized Copy Approved for Release 2014/04/29: CIA-RDP80T00246A071200070001-3