Status LED

The diagnostic LED provided on the OEM7 receiver cards blinks green on and off approximately once per second to indicate normal operation.

Error bits and status bits that have been priority masked as errors cause the LED to flash a code in a binary sequence. The binary sequence is a six flash (0.5 second on and 0.25 second off per flash) sequence followed by a one second delay. The sequence repeats indefinitely. If there are more than one error or status present, the lowest number appears as the flash code output. The codes are ordered to have the highest priority condition output first.

The first flash in the six flash sequence indicates if the code that follows is an error bit or a status bit. Error bits flash red and status bits flash yellow. The next five flashes are the binary number of the code (most significant bit first). A red flash indicates a one and a yellow flash indicates a zero. For example, for an error bit six, the binary number is 00110 so the output sequence is:

followed by a one second delay. The sequence repeats indefinitely until the receiver is reset.

In the example shown in Figure: Status LED Flash Sequence Example, the first flash in the sequence is red, meaning a bit is set in the receiver error word. The next five flashes give a binary value of 00111. Converting this value to decimal results in a value of seven. Therefore, bit seven of the receiver error word is set, indicating a problem with the supply voltage of the receiver’s power circuitry.

Refer to the RXSTATUS log and associated tables for more information about this log and receiver error status.