User's Manual

Appendix A Technical Specifications
Crescendo UHF Half-Duplex User Manual Page 57 of 78
Digital Inputs
0 - 5 V (internal 5 kiloohm pull-up)
Input Voltage
9 V to 16 V DC (negative ground)
Environmental
Specifications
Temperature: -10 ºC to +60 ºC
Humidity (max): 95% non-condensing at 50 ºC
Connectors:
Power: Phoenix PH1776508
Main Serial Port: DB9 RS-232 Female
Auxiliary Serial Port: DB9 RS-232 Female
I/O Module Connector (where present): 5-way terminal block (35mm,
screw flange, Phoenix part number 1843826)
RF: BNC Female (50 ohm nominal)
Table 19: Radio modem specifications
A.2.1 Input Current
Tx Power (dBm)
Current (mA)
Rx Only
100
0
390
20
450
27
650
30
830
36
1490
37
1700
Table 20: Nominal input current at 450 MHz, 100% Duty Cycle