User's Manual

MDS 05-4121A01, Rev. 02 TRM SB Integration Guide 25
Intermodulation Rejection: –70 dB minimum
Selectivity: 60 dB typical at adjacent channel (EIA)
Bandwidth: 12.5 kHz
DATA INTERFACE
Connector: AVX fine-pitch 5046 series
Signaling: TTL
Data Rate—Diagnostics: 38400 bps asynchronous
Data Rate—Payload: 38400 bps synchronous
Flow-Control: Synchronous serial with clock supplied by the radio
in bursts of 8 bits (when the radio is ready)
Data Latency: < 20 ms typical
PRIMARY POWER
Voltage: 3.3 Vdc (3.2–3.6) via Data Interface connector
RX Current at 3.3 Vdc (typical): 112 mA
TX Current at 3.3 Vdc (typical): 1.8 A @ high power (2W)
750 mA @ low power (0.5W)
Current Limit/Polarity Protection: External; User-provided
5.2 Test and Evaluation Assembly
A PCB assembly (03-6053A02) is available from the factory to facilitate
bench testing, programming and evaluation of the TRM SB transceiver
module. This module features:
• Mounting Posts for aligning and securing TRM SB module
• 3.3 Vdc Power Input Receptacle
• 6–12 Vdc Power Input Receptacle
• DB-25 Data Interface (Female)
providing EIA/RS-232 to TTL signalling conversion
• Radio Configuration Mode Enable (Manual Jumper)
• Activity LEDs:
TXD
RXD
TX CLOCK
RX CLOCK
CARRIER DETECT
TEST (Reserved)
• Antenna Connector–RF I/O (TNC)
• Receiver Analog Output through DB-25 interface connector
NOTE: The Test and Evaluation Assembly is not intended for service
in a permanent installation in a user-designed product or
system.