Specifications

MDS 05-3438A01, Rev. E MDS 4790/9790 Series I/O Guide 93
10.0 TECHNICAL REFERENCE
10.1 Technical Specifications
The following specifications apply to all models unless noted.
GENERAL
Size: 2RU (8.89 cm/3.5 inch) high
43.7 cm (17.2 in) wide
36.6 cm (14.3 in) deep
(including internal duplexer and power supply)
Weight: 9 kg (19.8 lbs.) max
Frequency Range: MDS 4790A/C
330 to 512 MHz
MDS 9790A
800 to 960 MHz
Reprogrammable within smaller bands; duplexer
and helical filters may require retuning.
MDS 4790E/S—ETSI-Certified:
Band A: 400-420 MHz
Band B: 420-450 MHz
Band C: 450-480 MHz
Transmit & receive frequencies must be within the
same frequency band for ETSI-certified radios.
Other bands pending. Contact the factory for
additional information.
TX/RX Split: MDS 4790: Simplex to 132 MHz
MDS 9790: Simplex to 160 MHz
Tunable Bandwidth: 5 MHz maximum w/o alignment
of RX helical filters
Frequency Step Size: 6.25 kHz, 5.0 kHz (All models)
Unit Diagnostic Address: 0...65000 (reprogrammable from 10000...65000)
DATA CHARACTERISTICS
Signaling Standard: EIA-232
Connector: DB-25 Female
Data Rates (for locally
connected equipment):
110 bps, 300 bps, 1200 bps, 2400 bps, 4800 bps,
9600 bps, 19.2 kbps, 38.4 kbps asynchronous
Data Rates
(over-the-air):
MDS x790A—9600 bps asynchronous
MDS 4790C models—19.2 kbps asynchronous
MDS 4790E models—4800 bps asynchronous
MDS 4790S models—9600 bps asynchronous
Data Latency: 7 ms max at 9.6 kbps
Byte Length 10 or 11 bits