User's Manual
Table Of Contents
- Introduction
- Safety Information
- Operation
- Buttons
- Main Screens
- Site Configuration Tools
- Two-Way Paging
- Configuration Methods
- MENU Configuration
- Serial Command Configuration
- Protocols
- SCADA Support
- IO Mirror Operation
- Input Handling
- Output Handling
- WTE Output Control Protocol
- WTE Ack and Confirm Protocol
- Store Forward Operation
- Installation
- Input Output Hardware Connection
- Serial Connections
- RF Connections
- Power Connections
- Ethernet Interface
- TReX Firmware Upgrade
- Physical Dimensions
- Mounting Hardware
- Omni or Directional Antenna
- Antenna Elevation
- Disclaimer
- Manufacturing marking and labels
- Maintenance
- Product End Of Life
- Product Warranty
- Abbreviations and Glossary
- Specifications
TReX User Manual v2.14 Firmware
power when the receivers is in deep sleep mode.
The POCSAG standard uses a setting of 18 (576 bits – configured in steps of 32). This very
long preamble means that paging receivers need only to wake briefly once per second (at 512
baud) in order to check for an incoming message. If the receiver is always powered and
receiving, then much shorter preambles can be used, and in some cases halve the channel
activity. When the TReX is used as transmitter and receiver at both ends of the link, a setting of
2 (64 bits) will work equally well.
Typical usage:
*TX_PREAMBLE=18<CR>
*TX_LEAD
Sets the transmit lead-in and lead-out time in multiples of 10ms.
Some receivers require time to settle when a transmitter is keyed up. The command allows the
lead-in and lead-out times to be set.
*TX_LEAD=II,OO<CR>
where:
II is the lead-in time. This is the duration after the carrier is applied BEFORE data is
transmitted. Default is 0, max is 50 (500ms).
OO is the lead-out time. This is the duration AFTER data is transmitted that the carrier is
applied before keying down the transmitter. Default is 0, max is 50 (500ms).
Typical usage:
*TX_LEAD=5,5<CR>
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