Comtech EF Data SDM-300A - Manual (Page 389)

SDM-300A Satellite Modem Revision 6
Specifications MN/SDM300A.IOM
19–33
19.10.3 Remote Control
All modem functions can be controlled remotely through the remote connector on the rear
panel. See Appendix B for the complete command and response.
Interface type:
• EIA-485 (4- or-2-wire) or EIA-232
• Baud Rate Range 150 to 19.2 kbps.
• ASCII characters
• 11 bits per character
• 1 start bit
• Information bits
• 7 information bits, 1 parity bit (odd/even)
• 8 information bits, no parity bit
• 2 stop bits
• Operation mode TX only, RX only, or Duplex
For exact remote control information, refer to the latest firmware appropriate for this piece
of equipment.
19.10.4 Modem Remote Address
Note: The value of zero is defined as global.
The modem can be programmed for a remote address, ranging from 0 to 255. All other
addresses are unique, and should not have more than one modem assigned per EIA-485/232
bus.
19.10.5 Monitored Signals
The operator can display/read one of the following, continually updated, performance
monitors.
• Receive signal level -25 to -60 dBm, ± 2.5 dB accuracy
• Raw BER
• Corrected BER, range 1.0 E-3 to 1.0 E-12
• Eb/N0,.1 dB resolution, ± 0.5 dB accuracy, range 2.0 to 16.0 dB
• RX frequency offset, 1 Hz resolution, ± 10 PPM accuracy, range -35 to +35 kHz
• Buffer fill status, 1% resolution, 1% to 99%
• Frame Errors or 2047 BER * Only when Overhead Board is installed