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MDS 4710/9710 Technical Manual
MDS 05-3305A01, Rev. E
FCC Identifiers:
E5MDS9710N (928–960 MHz)
E5MDS9710N-1 (806–940 MHz
E5MDS4710 (403–512 MHz)
DATA CHARACTERISTICS
Signaling Type:
EIA/RS-232; DB-25 Female connector
Data Interface Rates:
1200–19200 bps, asynchronous
Data Latency:
10 ms maximum
PRIMARY POWER
Voltage:
13.8 Vdc Nominal (10.5 to 16 Vdc)
Negative-Ground Systems Only
TX Supply Current:
2.5 A (Maximum) @ 5 W RF Output
RX Supply Current:
Operational—
125 mA, Nominal
Standby (sleep)
—15 mA, Nominal
Power Connector:
2-pin polarized & locking connector
Fuse:
4 A Thermal Fuse, Self-Resetting, Internal
(Remove primary power to reset)
ENVIRONMENTAL
Humidity:
95% at 40 degrees C (104°F), non-condensing
Temperature Range:
–30 to 60 degrees C (–22°F to +140°F)
Weight:
1.0 kilograms
Case:
Die-cast Aluminum
DIAGNOSTICS INTERFACE
Signalling Standard:
RS-232
Connector:
DIAG—RJ-11 (Dedicated)
DATA INTERFACE—DB-25
(Alternate,
See “Performing Network-Wide Remote
Diagnostics” on Page 37
)
I/O Devices:
GE MDS Hand-Held Terminal,
PC with GE MDS software,
or other Terminal Communications program.
6.2 Helical Filter Adjustment
If the frequency of the radio is changed more than 5 MHz, adjust the
helical filters for maximum received signal strength (RSSI) as follows:
1. Remove the top cover from the transceiver by loosening the four
screws and lifting straight up.
2. Locate the helical filters on the PC board. See
Figure 12 on Page 37
.
3. Apply a steady signal to the radio at the programmed receive fre-
quency (–80 dBm level recommended; no stronger than –60 dBm).
This can be done with a signal generator or an over-the-air signal.
