Comtech EF Data SDM-650B - Manual (Page 251)

Rev. 5 D–1
Appendix D.
SOFTWARE CHANGE
INSTRUCTIONS
Steps 1 through 5 are instructions for changing software on the M&C card.
Steps 6 through 9 are instructions for changing software on the Viterbi decoder card. If
the Viterbi decoder software does not need to be changed, skip to Step 10 and continue.
To change the software:
1. Remove the M&C card (AS/0356) using the black card ejector on vertical card.
2. Remove the proms in location U7 and U9 (28 Pin
— 0.6” wide).
3. Install the new firmware FW0713-XX into U7 position, and FW0714-XX into
U9 position, making sure that pin 1 is installed properly.
Note: See Table D-1 for the definition of the various firmware that is available.
4. Remove the battery jumper, JP6. Short out the leads on capacitor C12, and
re-install JP6 in the ON position.
5. Re-install the M&C card into the modem chassis.
6. Remove the Viterbi decoder card (AS/0701, AS/0949, or AS/2133) from the
modem chassis. The decoder card is the horizontal card with gray card ejectors.
7. Remove the prom in proper location on the Viterbi decoder (28 pin
— 0.6” wide).
Refer to the decoder firmware in Table D-1 for location and description of the
various Viterbi decoder boards.