Remote Control; Modem Remote Address; Monitored Signals; Faults Monitored - Comtech EF Data SNM-1001L Installation And Operation Manual

SNM-1001L Satellite Modem
Burst Mode Modulator Operation
C.5.2

Remote Control

All modem functions can be controlled remotely through the remote connector on the rear
panel. See the Remote Specification for the complete command and response structures and
syntax. Interface type:
•
EIA-485 (4- or-2-wire) or EIA-232
•
Baud Rate Range 150 to 19.2 kbit
•
ASCII characters
•
11 bits per character
•
•
•
•
Operation mode TX only, RX only, or Duplex
For exact remote control information, refer to the latest firmware appropriate for this piece of
equipment.
C.5.3

Modem Remote Address

The modem will have the ability to be programmed for a remote address. This will range from 0
to 255. The value of zero is defined as global. All other addresses are unique, and should not
have more than one modem assigned on a given EIA-485/232 bus.
C.5.4

Monitored Signals

The operator can display/read one of the following, continually updated, performance monitors.
Note: These monitors will not have valid information unless the burst is of sufficient length to
accumulate the data.
• 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 /N
b
• RX frequency offset, 1 Hz resolution, ± 10 PPM accuracy, range -4 to +4 kHz
C.5.5

Faults Monitored

Faults monitored by the modem, and the action taken at each occurrence of that fault.
1 start bit
Information Bps
•
7 information bits, 1 parity bit (odd/even)
•
8 information bits, no parity bit
2 stop bits
.1 dB resolution, ± 0.5 dB accuracy, range 2.0 to 16.0 dB
0,
C–12
Revision 1
MN/SNM1001L.OM