User's Manual

Table Of Contents

TReX User Manual v2.14 Firmware

Specifies the transport mode of the receiver (how the information is received over the air).

• POCSAG_A must be used in order to receive alphanumeric messages.

• POCSAG_N must be used in order to receive numeric messages.

• WTE_EN must be used in order to receive 8 bit characters (POCSAG_A transmits 7

bit characters only).

• FLEX must be used in order to receive and decode 2 level 1600 baud FLEX messages.

MSG LOG

When ENABLED all received messages are written to RX-LOG.TXT on the SD card. Should

be set to DISABLED in critical applications when the SD card cannot be allowed to

completely filled (such as when unsupervised).

DISABLED:

Messages are not logged.

ENABLED:

All messages displayed are written to internal SD card and can be viewed on the message

history screen.

CLEAR:

Setting to CLEAR will result in RX-LOG.TXT being deleted when exiting the menu.

RIC RANGES

Specifies up to 8 RIC RX ranges for decoding. Messages received with RIC codes not allowed

with the RX_RANGE will be discarded by the receiver.

Note: When configuring the RIC RANGE, the LOW RIC must not be higher than the HIGH

RIC and the HIGH RIC must not be lower than the LOW. Any attempt to configure illegally

will reset the RIC RANGE to ensure these rules are not broken. Any RIC RANGE with a

LOW RIC set to 0000000 will NOT be used.

BUSY LEVEL

Specifies the busy level for the configured channel.

The configured value is the signal level from 0 to -130 (in dBm). If the signal strength on the

receiving channel is above this configured value, the channel will be considered to be busy.

Transmissions will not be possible if the channel is considered to be busy. After a period of 5

seconds of the channel being busy, the transmitter will transmit anyway.

Note: If the TReX continually reports BUSY, issue the command *RSSI<CR> (or view the

RSSI screen) to inspect the noise floor and adjust the busy level appropriately.