CL4790 Hardware Integration Guide
Version 3.0
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/ramp
6
CONN-HIG_CL4790
Detailed Specifications
Table 1: CL4790-1000 Specifications
INTERFACE
Serial Interface Connector
DB-9 Male (RS232), Terminal Block (RS485)
RF Connector
RPSMA Jack
Serial Interface Data Rate
Baud rates from 1200 bps to 115.2 Kbps
Power Consumption
400 mA @ 12 VDC
Channels
US/Canada: 32 channels
Australia: 8 channels
Supported Network
Topologies
Point-to-Point, Point-to-Multipoint
Security
One byte System ID. 56-bit DES encryption key.
Interface Buffer Size
Input/Output: 256 bytes each
OPERATIONAL
Frequency Band
902 – 928 MHz (US/Canada)
915 – 928 MHz (US/Canada, Australia)
RF Data Rate
76.8 Kbps fixed
Host Data Throughput
20.5 Kbps maximum
RF Technology
Frequency Hopping Spread Spectrum (FHSS)
EEPROM write cycles
20000
Hop Period
50 ms
Output Power
Conducted (no antenna)
EIRP (3dBi gain antenna)
CL4790-1000
743 mW typical
1486 mW typical
Supply Voltage
CL4790-1000: 7-18VDC; 400 mA
Receiver Sensitivity
-100dBm typical @ 76.8 kbps RF Data Rate
Range, Line of Sight
(based on 3dBi gain
antenna)
Max. 1500 feet (450 m) indoors; Max. 20 miles (32 km) line-of-sight
POWER SETTINGS (Input Voltage: 12 v DC)
Transmit – Full Duty Cycle
Max Power Setting
Current (mA)
dBm
mW
Low
157
10
10
Quarter
225
23
200
Half
280
26
400
Full
365
28
743
Receive – Transceiver in
Idle
Max Power Setting
Current (mA)
Low
50
Quarter
50
Half
50
Full
50
ENVIRONMENTAL
Temperature (Operational) -40° C to +80° C
Temperature (Storage)
-50° C to +85° C
Humidity (Non-
Condensing)
10% to 90%
