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SDM-300A Satellite Modem
C.12.3
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:
•
•
•
•
•
For exact remote control information, refer to the latest firmware appropriate for this
piece of equipment.
C.12.4
Modem Remote Address
Note: The value of zero is defined as global.
The modem will have the ability to be programmed for a remote address. This will range
from 0 to 255. All other addresses are unique, and should not have more than one modem
assigned on a given EIA-485/232 bus.
C.12.5
Monitored Signals
•
Rev. 4
EIA-485 (2- or-4-wire) or EIA-232
Baud Rate Range 150 to 19.2 kbit
ASCII characters
11 bits per character
♦
1 start bit
♦
2 stop bits
♦
7 information bits (plus 1 parity bit) or 8 information bits (No parity bits)
Operation mode TX only, RX only, or Duplex
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
♦ E
.1 dB resolution, ± 0.5 dB accuracy, range 2.0 to 16.0 dB
/N
b
0,
♦ 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
Specifications
C–55
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