SYSTEM 1 TEST SET

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP81B00878R000200050079-4
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 1
• Document Creation Date: December 9, 2016
• Document Release Date: February 16, 2000
• Sequence Number: 79
• Publication Date: July 10, 1957
• Content Type: MEMO

25X1A9a
Approved For Release 2000/09/01 : CIA-RDP81 B00878R00020005p0794i OF
CMCC Document No. 151X5.6
to it
To: RSP(i
WRSP(Z)
WRSP(3)
gubiect:
sautar
$YST M I TEST SILT
957
acing the ZK4t S-bead kiystroxx in the
Test get, it may be necessary to adjust the control grid
voltage to obtain satisfactory psriorman for both pulse
and C' operation. For some tubes this control. grid volt
is rather critical and is best adjasted by observing the
detracted poise wave shape and en checking for proper
performance can CW and then observing tho pulse wave form
itching back to pulse operation.
The best way to adjust this volta,
8549 (i3 K) resistor and change R54f from a .100 K fixe- d
to s 100 K 2-Watt potentiometer. The center tap
potentiometer should be connect: d to the choke in
th the control rid.. 'lb' he voltage from control
grid to the eaathodle shoald never exeeed +50 volts.
25X1A
Approved For Release 2ODUY09MI CW -RDP81 B00878R000200050079-4