User's Manual
Table Of Contents
- Introduction
- Safety Information
- Operation
- Configuration
- Protocols
- Serial Point to Point Operation
- Input Handling
- Output Handling
- WTE Output Control Protocol
- Store Forward Operation
- Installation
- MReX Firmware Upgrade
- Antenna
- Disclaimer
- Manufacturing marking and labels
- Maintenance
- Product End Of Life
- Product Warranty
- Specification
MReX Transceiver User Manual v1.92 Firmware
Specification
Frequency Range:
• MReX-460: 421 - 480 MHz
Tx/Rx Frequency Accuracy:
• 0.5ppm. 235Hz max error at 480MHz over entire temperature range.
Fixed Supply Voltage
• 5-9V Internally fused at 250mA (not self resetting)
Battery Supply Voltage
• 3V. Internally fused at 250mA (not self resetting)
Inputs
• Five. Inputs accessible when used as a module. To operate tie to GND. Max input voltage
is 3.3V. Inputs are lost when configured to operate as an outputs.
Outputs
• Open drain out 1 pin (controlled from output 1) – open drain, max current 100mA. Max
voltage 12Vdc.
• Input/Output 1-5. Output impedance 1K (max current 3.3mA). Max voltage 3.3Vdc.
• LED1, LED2 – open drain, max current 100mA. Max voltage 12Vdc.
Message length
• Input max configured message length 80 characters
Temperature Limits
• -10 to + 55 degrees Celsius.
Max Tx Power (+/- 1dB)
• 20dBm (100mW)
Max Rx Input Power
• 13dBm (any level above this will destroy the receiver)
Receiver Sensitivity (+/- 1dB) @ 450MHz
• -126 dBm (512 baud),
• -124 dBm (1200 baud),
Max message length
• Up to 5 messages with 128 character can be queued for decoding or transmitting.
Antenna Connector
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