Comtech EF Data SDM-650B - Manual (Page 293)

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit
Rev. 5 F–35
F.5.2.6 Select Utility
Refer to Table F-12.
The Utility functions provide a means to set the time and date of the modem real time
clock circuit. Provisions are also made for assigning data and code rates to the modulator
and demodulator. A lamp test function is provided for testing of the front panel optical
indicators. Access to the transmitter and receiver data/code rate assignments are also
available from within the Utility menu.
After entering the Utility menu, use
[ ← ] and [ → ] to select the Utility function of interest.
The current time and date can be displayed and changed as required.
Note: The selection of data/code rates in the utility program must match the hardware
filters installed on the modulator and demodulator modules.
The utility functions are as follows:
Time Time of day set/display function.
The current time in the modem’s memory is displayed when
selected. To change the time, press [ENTER]. Use [
← ] and
[ → ] to position the flashing cursor over the parameter to be
changed. Use [ ↑ ] and [ ↓ ] to change the parameter to the
desired value. Once the parameters are displayed as desired,
press [ENTER] to set the time.
Date Date set/display.
The current date in the modem’s memory is displayed when
selected. To set the date, press [ENTER]. Use [
← ] and [ → ] to
position the flashing cursor over the parameter to be changed.
Use [
↑ ] and [ ↓ ] to change the parameter to the desired value.
Once the parameters are displayed as desired, press
[ENTER] to set the date.
LAMP TEST ?? Lamp test function illuminates all the front panel indicators for
three seconds. Press [ENTER] to turn ON all of the front panel
indicators for three seconds.
Address/Parity/Baud Rate The current buffer address, parity selection, and the selected
baud rate of the buffer are displayed. This is only a monitor
function. No changes can be made from this menu.