TD CARD (P/N 61864130)

T.O. 31W2-2GSC24-2

TM 11-5805-688-14-1

NAVELEX 0967-LP-545-3010

the DEMULTIPLEXER row. If Rc is less than KRp (RC <

bits the demultiplexer can process is

KRp), set S3 to the URD position and perform steps 14

868. If the computed quantity of fill bits

through 16.

exceeds this value, a check for

computational errors is suggested. A

correctly computed fill bit value greater

NOTE

than 868 is indicative of incorrect

configuration data on the worksheet.

In cases where Rc < KRp, coarse rate

conversion of KRp to Rc must be

15. Refer to table 3-3 and locate the fill bit quantity

performed by the demultiplexer. To

computed in step 14. Enter the 10-digit binary number

enable this conversion, a fill bit value

associated with this quantity in the RATE CONVERSION

must be computed and set into the

DATA block on sheet 3 of the worksheets.

NBSB by 10-position switch S2.

NOTE

14. Determine the quantity of fill bits required, using the

expression:

In step 16, ensure that the 10-digit

number is inserted properly and the 0

Fill bits = 899K (1 - Rc--)

and 9 positions are not inadvertently

KRp

reversed.

Removal of all switch

jumpers prior to starting the number

where

entry process is suggested.

K = quantity of ports assigned to the channel (from

16. Set 10-digit S2 on the NBSB card to reflect the 10-

worksheet)

digit binary number entered on the worksheet. This

completes the NBSB card setup process.

Rc = channel data rate (from worksheet)

17. Install the NBSB card in its appropriate slot (1

Rp = port rate (from worksheet)

through 15) in the DEMULTIPLEXER row.

3-82. VD CARD (P/N 61864140). No setup of the VD

card is required. Install a VD card in the appropriate slot

NOTE

in the DEMULTIPLEXER row indicated on the

worksheet.

To ensure a proper computation of fill

bit quantity, the value of 1 - Rc/KRp

3-83. TD CARD (P/N 61864130). Set up the TD card as

must be determined to seven decimal

follows (refer to figure 3-19 for all switch locations):

places. Overall fill bit quantity, when

computed, should be rounded to the

1. Set S1 to the ON position.

nearest whole number; i.e., 316.7 is

rounded to 317, etc. The largest

number

fill

3-50