Built-In Status Tests Chapter 8OEM4 Family Installation and Operation User Manual Rev 12 103of the RXSTATUSEVENT log. The set mask is used to turn logging on temporarily while the bitchanges from the 0 to 1 state. The clear mask is used to turn logging on temporarily while the bitchanges from a 1 to a 0 state. Note the error word does not have any associated mask words. Any bitset in the error word will result in the broadcast of the RXSTATUSEVENT log (unless unlogged).See the RXSTATUSEVENT log in Volume 2 of this manual for a more detailed description.8.6 Status LEDThe diagnostic LED provided on the OEM4 family receivers blinks green on and off at approximately1 Hz to indicate normal operation.Error bits and status bits that have been priority masked, as errors, will cause the LED to flash a codein a binary sequence. The binary sequence will be a 6 flash (0.5 second on and 0.25 second off perflash) sequence followed by a 1 second delay. The sequence will repeat indefinitely. If there is morethan one error or status present, the lowest number will be output. The codes are ordered to have thehighest priority condition output first.The first flash in the 6 flash sequence indicates if the code that follows is an error bit or a status bit.Error bits will flash red and status bits will flash yellow. The next 5 flashes will be the binary numberof 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 6, the binary number is 00110 so the output sequence would be:followed by a 1 second delay. The sequence repeats indefinitely until the receiver is reset.In the example below, the first flash in the sequence is red, which means that a bit is set in the receivererror word. The next five flashes give a binary value of 00111. Converting this value to decimalresults in a value of 7. Therefore, bit 7 of the receiver error word is set, indicating there is a problemwith the supply voltage of the receiver’s power circuitry.Figure 39: Status LED Flash Sequence ExampleFor a complete hexadecimal to binary conversion list see Appendix F, Unit Conversion on Page 163.See also, the RXSTATUS log and its tables in Volume 2 of this manual for more details on this log andreceiver error status.Red Yellow Yellow Red Red Yellow0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0 3.25 3.5 3.75 4.0 4.25 4.5 4.75 5 5.251 SecondPauseBeginningofSequenceEnd ofSequenceWordIdentifierFlashMostSignificantBit of BinaryValueLeastSignificantBit of BinaryValueBitIdentifierFlashesStart ofNextSequenceEnd ofPreviousSequenceR R R Y Y R R R R ......
