Check for fail-safe mode

The TX325 transmitter will go into the fail-safe mode if one of two events occurs:

1. The transmitter RF output is turned on and left on for more than 110 seconds.

2. The transmitter is given a command to transmit less than 30 seconds after a transmission has taken place.

If a fail-safe condition occurs, the red fail-safe LED is on continuously; the RF output is disabled; and the microprocessor is reset, causing the transmitter to restart. While in the fail-safe mode, the transmitter can communicate normally with the data logger, but is unable to transmit until the fail-safe mode has been cleared.

There are two ways to check if the TX325 is in fail-safe mode. The first is on site by checking the red fail-safe LED on the TX325 (see LED function). The fail-safe LED is located above the Reset button in the side of the transmitter housing (Reset button and fail-safe LED location). If the red LED is on continuously, the radio is in fail-safe mode.

The fail-safe mode can also be checked using the Device Configuration Utility. To use this method, connect to the data logger and click the Deployment > GOES tab. The Fail-safe Status is displayed in the General Radio Status section of the screen.

The only way to reset the fail-safe mode is to push the Reset button (Reset button and fail-safe LED location).