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™ OFR400 RF MODULES
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USER MANUAL
DCM000000019
Printed: 00.04.11,13:13
Revision Date:4/11/00
6
SPECIFICATION
Frequency Bands
403-512 MHz in 5 Bands
Channel Spacing
25 or 12.5 KHz
Modulation Types
Narrowband FM
RF Frequency Stability
Tracks Input Signal Exactly
Adjacent Channel Selectivity
60 dB Minimum
Max. RF Output Power
37 dBm
RF Output Power Range
Power can be reduced 20 dB in 1 dB Steps (AGC
Controlled)
RF Output Power Variation vs. Input
(over -90 to -30 dBm)
0 TO +1 dB
Input Dynamic Range
-110 to -30 dBm
Input Sensitivity Adjust Range
-110 to -30 dBm
Input Hysteresis
1 to 10 dB
Transmit Duty Cycle
Continuous
Transmit Spurious Output
-13 dBm max
Receive Conducted Spurious Output
-57 dBm Max
Maximum Gain
140 dB
Audio Distortion & Noise
(Narrowband FM)
<3% Increase
Transmit Key-Up Time
< 2 mS
Transmit Key-Down Time
< 1 mS
Group Delay
<120 uS
Input / Output Connectors
SMA Connectors on back of Card-Cage
Input / Output Impedance
50 Ohms
Module Power Supply Requirements
+12V & +28V from Card-Cage Power Supply
Module Power Consumption
45 W Maximum
Connections to Card-cage
Edge Connector for Power and Data and Two
Blind-Mate RF Connectors
Front Panel Indicators
Operating, Stand by, Fault, Program Mode,
Receive, Transmit
Module Interconnections (via Card-Cage)
DB-15 Connector on back of Card-Cage provides
per-Module Fault Relay, Interconnect to other
Modules, & RS-232 connection to a PC.
Configuration Options
RF Modules may be configured either via the
optional Controller Module, or via a PC and an
RS-232 Connection via the Card-Cage.
Module Specifications
