CENTENNIAL TAPE DRIVES

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP94T00858R000600990001-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 13
• Document Creation Date: December 28, 2016
• Document Release Date: February 29, 2008
• Sequence Number: 1
• Publication Date: April 13, 1983
• Content Type: REPORT

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NDS OPERATIONS PROCEDURE MANUAL SYSTEMS SW & HW
NO. P-0003 13 April'1983
.F-: NLA
SYMBOLIC TIT
ORIGINATOR:
STAT
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~j C) -0 03
DCOB Procedures
No. 1-4
DATA SYSTEMS OPERATIONS BRANCH
OPERATOR PROCEDURES
CENTENNIAL TAPE SUBSYSTEM
December 15, 1981
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INDEX
PAGE
1.1 Scope . . . . . . . . . . . . . . . . . . .- . . . . 1-1
1.2 General . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 TCU Operator Controls . . . . . . . . . . . . . . . . 1-1
1.3.1 Channel Enable/Disable Switches . . . . . . . . . . . 1-1
1.3.2 TCU Tape Unit On/Off Switches . . . . . . . . . . . . 1-4
1.3.2.1 Tape Unit Off-Line Switch . . . . . . . . . . . . . 1-4
1.4 Power-Up/Power-Down Procedures. . . . . . . . . . . . 1-4
1.4.1 Power-Up . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4.2 Power-Down . . . . . . . . . . . . . . . . . . . . . . 1-4
1.5 Field Engineer Panel (FEP) . . . . . . . . . . . . . . 1-4
1.5.1 Select Tape Unit . . . . . . . . . . . . . . . . .. 1-8
1.5.2 Write Tape Mark'
. . . . . . . . . . . . . . . . . . . 1-8
1.5.3 Tape Rewind Instructions . . . . . . . . . . . . . . . 1-8
Figure 1-1. Centennial Tape Subsystem . . . . . . . . . . . . . . 1-2
Figure 1-2. Tape Unit Offline Switch Location . . . . . . . . . . 1-5
Figure 1-3. Rear View, Panels Removed (Mod IV and Mod IV-C) . . . 1-6
Figure 1-4. Control Panel Orientation (Mod IV-C). . . . . . . . . 1-7
Figure 1-5. Basic FE Panel Operation . . . . . . . . . . . . . . . 1-9
Figure 1-6. Write Tape Mark/Tape Rewind. . . . . . . . . . . . . . 1-10
TABLE 1-1 CHANNEL ENABLE/DISABLE SWITCH SETTINGS. . . . . . . . 1-3
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15 December 1981
DATA SYSTEMS OPERATIONS BRANCH
OPERATOR PROCEDURES
Centennial Tape Subsystem.
DCOB Procedure
No. 1-4
1.1 Scope
The procedures described herein cover the operation of Centennial
3400 Tape Control Units and 3600 Tape Drives.
1.2 General
The Centennial Tape Subsystem consists of two (2) Tape Control Units
(TCU) and twelve (12) Tape Units (TU) configured as shown in Figure 1-1.
On the TCUs there are two control panels; the operator control panel located
on the top front of the TCU, and the Field Engineers (FE) control panel
located behind the TCU front access door. The operator controls for the
TUs are located on the top front of the individual drive.
1.3 TCU Operator Controls
Of primary interest to the operator are the Channel Enable/Disable
Switches and the Tape Unit On/Off Switches located on the top front of the
TCU.
1.3.1 Channel Enable/Disable Switches
The three position Enable/Disable Switches on the TCU Operator,Panel
provide manual channel control between the TCU and the 1100/84 Input/Output
Unit (IOU). Channel "A" of the TCUs is depending on switch setting,
connected to IOU 9 or 2, and channel "B" is connected to ICAJ 1 or 3. Facing
the cabinets, the TCU on the left controls TUs in the TCB9 string and the
TCU on the right controls the TCB1 string. Table 1-1 illustrates the
channel switching results. Two items to be noted about the use of the
Channel Enable/Disable Switches are:
a. The switches should never be changed while the
TCU is active.
b. The TCU is on-line until set off-line (either by the
TCU off-line switch or by the 1100/84 console).
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TAPE
CONTROL
(SWITCH)
Figure 1-1. Centennial Tape-Subsystem
TAPE
CONTROL
(SWITCH)
2-CONTROL SW
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 x
x
x
-
X
-
U
U
U
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IOU INTERFACE SWITCH SETTING
(.
1 - I lT~l'cB - TCU TIJ
TCBO TCB1
IAN CI Q UW CF
I9 12 11 13 10 I2 I1 I3 A B A B
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TABLE 1-1
CHANNEL ENABLE/DISABLE SWITCH SETTINGS
IOU INTERFACE SWITCH SETTING
- B - T
TCBO TCB1
UIAN
A
(KHAN
B
CHAN
A
QCHAN
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IOU INTERFACE
T - B
9112111112
-D
T CT--I-
x
'X
U - UP
0 - OFF
X - ENABLE
- - DISABLE
TCU - TAPE CONTROL UNIT
SWIT(lI SI:1''INc
TcU '1'CU
'1'C130 TCB1
CLA C IANa(Q (7 L~
A B A I
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1.3.2 TCU Tape Unit On/Off Switches
The TU On/Off Switches are located on the operator panel of the TCU.
The switches' create a physical path between any TCU in the'subsystem to the
TUs attached to the'TCU. There are '16 (sixteen) switches mounted in-rows of
8 and are labeled 9 through 7, and 8 through. F. The numbers also represent
the possible addresses of the'attachedTUs assigned.to the TCU's. Each switch
control selection of one TU from a particular TCU.
Switch assignments for the currently assigned TU's are:
Top Row - TUs G .through 5 for TBA through TBS
Bottom Row TUs 8 through c for TB6 through TB11
Use of the TU On/Off Switches is. optional if the TU switches are left
on and the 1100/84 console is used to down the device.
1.3.2.1 Tape Unit Off-Line Switch
Figure 1-2 provides an illustration of the TU Off-line switch location.
1.4 Power-Up/Power-Down Procedures
The following provide the procedures to power-up and power-down the
Tape Control Units. It assumes that the associated power panel circuit
breakers have been set.
1.4.1 Power-
To power-up the TCU, open the rear door of the cabinet and access the
AC Power Supply Panel (Figure 1-3). Place the LOCAL/REMOTE toggle switch
in the LOCAL position. PRESS the ON button. Open the front cabinet to
access the FE panel. (Figure 1-4). Place the TCU On-line by setting the
OFF LINE switch On(down). The system is now powered-up.
1.4.2 Power-Down
To power-down the TCU, place the OFF-line switch in the OFF position
(up), set the LOCAL/REMOTE toggle switch to LOCAL and press the OFF button.
1.5 Field Engineer Panel (FEP)
The following provides some routines using the FEP which may be of used
to the operator.
1-4
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Tape Unit Offline Switch
(New Version) L_
Figure 1-2. Tape Unit Off line Switch Location
1-5
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 LOGIC
MODULES
(COVER
PANEL
IN
PLACE)
DC
ADJUST-
MENTS
UNDER
COVER
AC POWER
SUPPLY
Figure 1-3. Rear View, Panels Removed (Mod IV and Mod IV-C)
1-6
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OPERATOR'S BOX ASSEMBLY
CONTROL
MEMORY
DC
POWER
PACK
DC POWER
SUPPLY
AC POWER
SUPPLY PANEL
ASSEMBLY AND
EPO BOX -
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66 6000000000-0000
..w... uuc.. rw.. wuu? VIC., -
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t.w1 .u.. ? f d.. C K I ,O?.t '
a, r :L ww at. rr ar a. ., W. au
`000000000000000
8. RATE SELECTION. RESET CONTROLS
9. CHECKOUT/STOP ON CHECK SWITCHES
FE BUFFER CONTROLS
ROM CONTROLS
1. LEFT-HAND STATUS & DISPLAY. INDICATORS
2. LEFT-CENTER STATUS& DISPLAY INDICATORS
3. RIGHT-CENTER STATUS & DISPLAY INDICATORS
4. RIGHT-HAND STATUS & DISPLAY INDICATORS
5. DISPLAY SELECTION SWITCHES
NOTE: ALL INDICATORS MAY BE FOUND IN THE LOGICS 01 PAGES.
ALL CONTROLS MAY BE FOUND IN THE LOGICS OS PAGES.
SHOWN IS THE MOD IV-C PANEL GENERAL FUNCTIONAL LAY-
OUT OF THE MOD IV PANEL IS THE SAME. DIFFERENCES ARE
INDICATED IN APPENDIX G.
Figure 1-4. Control Panel Orientation (Mod IV-C)'
.MOO IV FE PANEL LAYOUT IS FUNCTIONALLY SIMILAR.
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.?n cs a.. we ....w ?u, ?s r.. a...
0b~~~0000
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1.5.1 Select Tape Unit
Select an available Tape Unit. Open the left vertical door at the
front of the selected tape unit and place the'Offline switch in the OFFLINE
(up) position (Figure 1-2). This makes the Tape Unit available to-the TCU
for FE buffer routines. Instructions for entering a tape unit address into
the FE Buffer are given in Figure 1-5. After setting all FE panel toggle
switches OFF (down), place the TCU OFFLINE and the AUTO STOP switch to the
ON (up) position (Steps 1 and 2). The OFFLINE indicator will light'after the
TCU completes the operations in progress. Set the BUF ADR knob to the-0
position (Step 3). The address of the selected tape unit is entered on
knobs 0-3 (set to 0) and 4-7, (Steps 4 and 5). In.the illustration, Y re-
presents the tape unit address (0-7 or 8-F). After the address is set,
raise toggle switch C2 ON and hold it up while raising the LOAD switch
(Steps 6 and 7).
1.5.2 Write Tape Mark
With tape loaded on the selected Tape Unit, it is possible to write
a tape mark by raising the WTM switch (Step 1, Figure 1-6) and raising the
START switch (Step 2, Figure 1-6). This sequence will write a tape mark
at the drive specified by the switch setting of Step S in Figure 1-5.
1.5.3 Tape Rewind Instructions
The Tape on the selected Tape Unit can be rewound by operating toggle
switches on the FE panel. First raise the SPAR ENABLE toggle switch (Step
3,. Figure 1-6). Next, raise the WN toggle switch (Step 4, Figure 1-6).
With both these switches raised, raise the START switch (Step 5). The
tape on the TU selected in Step 5 (Figure 1-5) will now be rewound to the
Beginning Of Tape (BOT) marker.
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BUFFER POSITION
INTO WHICH TU
ADDRESS IS LOADED
0 0000 0000 0 0000 01)00
.Y.
HOLDING (6) UP WHILE
RAISING (7) LOADS
INTO BUFFER (3)
Figure 1-S. Basic FE Panel Operation
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14
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00000000000000000 000000000000000 6Z56.ot5 5 5O6 I650oc
0 60,66 6660 0 0000 0000 0 0 0 0 0 6666 6666 6,666 0 0 00 0,JZ5 u Z5 37!
ate. .?- r? =.- ~? ~?~, M? V
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Figure 1-6. Write Tape Mark/Tape Rewind
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