GE MDS SD4A Technical Manual page 50

42
Modem Type
• —This setting determines the over-the-air data speed
and bandwidth of the radio's transmitted signal. All radios in the
network must use the same modem setting to communicate with
each other. The default setting is
any of the selections shown in Table 12. The table also lists
modem sensitivity ratings for the various modems. Note that
some modem choices are limited based on the model purchased.
Table 12. Modem Selection vs. Speed, Bandwidth & Sensitivity
Modem Type
Selection
1
Modem 9600
1, 2
Modem 4800
1, 3
Modem 3200
1, 2
Modem 9600M
Modem 4800F
1
Modem 9600B
1
Modem 4800B
1
Modem BELL
Modem V23
Modem 19200N
Modem 19200E
Modem 9600N
Modem 19200
Modem 65000
1) For MDS x710-compatible operation.
2) For ETSI compliance.
3) 3200 bps not applicable to SD4.
Transmit/Receive Frequency
•
may be viewed or set here. If no frequencies have been entered,
the fields will be blank and the radio's
cating that an entry is needed. Frequencies must be entered for the
radio to operate. Consult your station license to determine the
authorized frequencies for your system, and enter them exactly as
listed.
SD Series Technical Manual
Modem 9600
OTA Speed B/W (kHz)
(bps)
9600 12.5
4800 12.5
3200 5.00
9600 12.5
4800 6.25
9600 12.5
4800 12.5
1200 12.5
1200 12.5
19200 12.5
19200 12.5
2
9600 6.25
19200 25.0
65000 50.0
—The receive and transmit frequencies
, but it may be set to
Approximate
5
Sensitivity
-112 dBm
-112 dBm
-108 dBm
-106 dBm
-108 dBm
-106 dBm
-110 dBm
-110 dBm
-110 dBm
-100 dBm
-96 dBm
-98 dBm
-105 dBm
-104 dBm
PWR
led will flash, indi-
MDS 05-4846A01, Rev. F