Comtech EF Data SDM-650B - Manual (Page 252)

Software Change Instructions SDM-650B Satellite Modem
D–2 Rev. 5
8. Install the new firmware FW/XXXX in UX position on the Viterbi decoder. See
Table D-1 for the definition of the various firmware that is available.
9. Re-install the decoder into the modem chassis.
10. Turn ON the power switch.
11. Go to the Utility menu on the front panel, and program the time, day, TXA, TXB,
TXC, TXD, RXA, RXB, RXC, and RXD to the new data/code rates.
Note: The data/code rate assignment in the Utility menu must match the filter
assignment on the daughter card. Each daughter card is labeled with the filter
assignment (A, B, C, and D) and associated symbol rate. Example: The label for
a 64 kbit/s, 7/8 rate, QPSK filter is 36.57.
12. Go to the Config menu on the front panel and select the desired TX and RX rates.
Turn ON the RF output.
The software change is complete.
The firmware for the M&C cards is contained in three EPROMs:
• EPROMs U7 and U8 contain the various modem program codes.
• EPROM U9 contains the data information for the various plug-in modules.
The firmware for the Viterbi decoder card is contained in one EPROM. Refer to Table D-
1 for the location.
Table D-1. EFData M&C Viterbi Decoder Firmware
M&C EEPROM# Firmware # Description
U7 FW/0713-11D Variable Rate Standard (Version 2.66)
U7, U8 FW/0713-19X Variable Rate (Version 3.XX)
U7, U8 FW/0713-56X Variable Rate, Fast acquisition, Directed Sweep
(Version 4.XX)
U7, U8 FW/0713-57X Drop and Insert, Fast Acquisition, Directed Sweep
(Version 6.XX)
U9 FW/0714-7X 70/140 MHz
Decoder EEPROM# Firmware # Description
U1 FW/0760-1X AS/0701 Viterbi Decoder
U17 FW/1910X AS/0949 Viterbi Decoder
U42 FW/2355X AS/2133 Viterbi Decoder
Note: The “X” following each of the firmware numbers stands for the revision
release information of that firmware number.