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T.O. 31W2-2GSC24-2
TM 11-5805-688-14-1
NAVELEX 0967-LP-545-3010
fill bits the demultiplexer can process
marked with an X, a smoothing buffer
is 868. If the computed quantity of fill
(SB) card (P/N 61864090) is used.
bits exceeds this value, a check for
Procedures for SB card setup are
computational errors is suggested. A
presented in paragraph 3-80.
correctly  computed  fill  bit  value
greater than 868 is indicative of
1. Note the demultiplexer input rate (Ro) value entered
incorrect configuration data on the
on the worksheet. If Ro is less than 2000 bps, set S1 to
worksheet.
the RO < 2KHZ position. If Ro is 2000 bps or greater, set
S1 to the RO > 2KHZ position.
18.  Refer to table 3-3, and locate the fill bit
quantity computed in step 17. Enter the 10-digit binary
2. Set S9 to the NORM position.
number associated with this quantity in the RATE
CONVERSION DATA block on sheet 3.
of the
3. Set S4 to the ON position.
worksheets.
NOTE
NOTE
Setting S4 to the OFF position will
In step 19, ensure that the 10-digit
inhibit the display of any card errors
number is inserted properly and the 0
detected
by
the
NBSB
card
and 9 positions are not inadvertently
diagnostic circuits.
reversed.
Removal of all switch
jumpers prior to starting the number
4. Refer to the DATA N or R block on the worksheet,
entry process is suggested.
and set both jumpers of S10 to the indicated N (normal)
or R (reversed) position.
19. Set 10-digit switch S2 on the SB card to reflect the
10-digit binary number recorded on the worksheet. This
5. Refer to the TIMING N or R block of the worksheet
completes the SB card setup process.
and set both jumpers of S11 to the indicated N (normal)
or R (reversed) position,
20. Install the SB card in its appropriate slot (1 through
15) in the DEMULTIPLEXER row.
6. Refer to the INTERFACE BAL, U75, or U6K block of
the worksheet, and set S19 and S22 to the indicated B
3-81. NBSB CARD (P/N 61864160). For each channel
(balanced)  U75  (unbalanced  75  ohms)  or  U6K
that uses an NBSB card, set up the card as follows (refer
(unbalanced 6K ohms) position.
to figure 3-18 for all switch locations):
7.  If the INTERFACE BAL block of the worksheet is
NOTE
marked, set S14, S15, S16, S17, 518, S20, S21, and
S23 to the B position. If the INTERFACE U75 or U6K
NBSB  cards  are  used  for  each
block is marked, set the switches to the U position.
channel marked with the letters NB in
the CARD TYPE SB block of sheet 3
8. Refer to the worksheet, and note the channel's output
of the worksheets. If the CARD TYPE
(data rate
SB
block
is
3-48

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