www.GEDigitalEnergy.com
36
x790 Series
Antenna
(Over-the-Air connectivity
to SDx and x710 remotes)
Local management
diagnostics serial port
Dual DC or AC Power
COM1 serial port
Detachable front-panel LCD
Display for configuration
Key Pad (Up, Down, Left, Right
Enter, Esc)
Full-Duplex Radio with
redundancy option
Specifications
x790
SD Adapter
GENERAL
Data Rate (data)
110 bps - 38.4 Kbps
Frequency
programmability
6.25 kHz increments to any
MAS channel pair
Operational modes asynchronous - simplex,
half-duplex, full-duplex
(synchronous available in
4790B, and 9790B),
protected, non-protected
Modulation
digital / CPFSK
Latency (Rx-Tx-Rx) 10 ms including RTS/ CTS
delay
CTS Delay
0-255 msec programmable in
1 msec increments
PTT Delay
0-255 msec programmable in
1 msec increments
Range
Up to 50 miles
4790
RF Data Rate
4790E: 4800 bps
4790P: 9600 bps
4790A: 9600 bps
4790C: 19,200 bps
Frequency Bands
330 - 512 MHz
Tx / Rx split:
4790: simplex to 132 MHz
9790
RF Data Rate
9790E: 4800 bps
9790A: 9600 bps
Frequency bands
800 - 960 MHz
Tx / Rx split:
simplex to 160 MHz
TRANSMITTER
Frequency Stability +/- 1.5 ppm
Carrier power
0.1 to 5 Watts Programmable
Carrier power
Accuracy
Normal +/- 1.5 dB
Duty Cycle
Continuous
Output Impedance 50 Ohms
RECEIVER
Type
Double Conversion
Superheterodyne
Adjacent channel
(EIA):
60 dB nominal
BIT ERROR RATE
4790
4790E: 4800 bps: BER 1x10-6 @-114 dBm typical
4790M: 9600 bps: BER 1x10-6 @-100 dBm typical
4790A: 9600 bps: BER 1x10-6 @-110 dBm typical
4790C: 19.2 Kbps BER 1x10-6 @-105 dBm typical
9790
9790E: 4800 bps: BER 1x10-6 @-114 dBm typical
9790A: 9600 bps: BER 1x10-6 @-110 dBm typical
INTERFACES
4790 & 9790
Data interface
RS232, DB25 Female
Supports
TXD, RXD, RTS, CTS, DCD, RUS,
AUX POWER, DSR, and GND
SDA
Serial COM1
RS-232, DB9
Serial COM2
RS-232, DB9
Ethernet
10/100BaseT, RJ45
DIAGNOSTICS
Local diagnostics
included in all models
Network-wide
diagnostics
InSiteTM Radio System
Management software
(optional)
ENVIRONMENTAL
Temperature
-30°C to +60°C (-22°F to
+140°F)
Humidity
95% at 40C (104°F) non-
condensing
ELECTRICAL
Primary power
100-240 Vac (50/60 Hz), 24/48
Vdc (21 to 60 Vdc), 125 Vdc
external, 12 Vdc external
Power required
< 60 Watts nominal
MECHANICAL
4790 & 9790
Dimensions
8.8 H(2U) x 43.7 W x 36.3 D cm.
3.5 H x 14.3 W x 14.3 D in.
Weight
9 kg (19.8 lbs)
SDA
Dimensions
4.4 H(1U) x 43.7 W x 30 D cm.
1.7 H x 14.3 W x 12 D in.
Weight
1.5 kg (3.3 lbs)
AGENCy APPROVALS
4790A: FCC part 90, industry Canada & ENTELA
(safety)
4790E and 4790M: ETSI: ETS 300 113, EMC: EN 300
279, CE Mark & ENTELA (safety)
9790A: FCC Part 101, Industry Canada & ENTELA
(safety)
090213-v5
· Buythex790throughtheonlinestore
· Downloadguideformspecifications
· Downloaduserdocumentation
· Readapplicationnotesandwhitepapers
View Accessories catalog at www.gemds.com
Accessories for the x790
Visit www.GEMDS.com/x790 to:
Ethernet Port (To Host Computer,
10/100 BaseT, RJ-45)
COM1 Serial Port (To x790 Radio,
DB-9M to DB-25M Umbilical)
COM2 Serial Port ( To Host Computer,
Serial, DB-9F)
Rear view
400 MHz
900 MHz
KAP-L04-C1 (406-430 MHz)
KAP-L09-D1
KAP-L04-C2 (430-450 MHz)
KAP-L04-C3 (450-470 MHz)
Fixed Remote Kits
with yagi
CommunicationsRG.indb 36
5/1/2009 12:32:05 PM