OEM6 Family Installation and Operation User Manual Rev 7
68
Chapter 5
Built-In Status Tests
5.1
Overview
The Built-In Status Test monitors system performance and status to ensure the receiver is operating
within specifications. The test detects an exceptional condition and informs the user through one or more
indicators. The receiver status system is used to configure and monitor the indicators:
1. Receiver status word (included in the header of every message)
2. ERROR strobe signal (refer to the Strobes table in the Appendix for each card)
3. RXSTATUSEVENT log
4. RXSTATUS log
5. Status LED
In normal operation, the error strobe is driven low and the status LED on the receiver flashes green once
every second. When an unusual and non-fatal event occurs (for example, there is no valid position
solution), a bit is set in the receiver status word. Receiver operation continues normally, the error strobe
remains off and the LED continues to flash green. When the event ends (for example, when there is a
valid position solution), the bit in the receiver status word is cleared.
When a fatal event occurs (for example, a receiver hardware failure), a bit is set in the receiver error
word, part of the RXSTATUS log, to indicate the cause of the problem. Bit 0 is set in the receiver status
word to show that an error occurred, the error strobe is driven high and the status LED flashes red and
yellow showing an error code. An RXSTATUSEVENT log is generated on all ports to show the cause of
the error. Receiver tracking is disabled but command and log processing continues to allow error
diagnosis. Even if the source of the error is corrected, the receiver must be reset to resume normal
operation.
Two scenarios describe factory default behavior. These behaviors can be customized to better suit an
individual application. RXSTATUSEVENT logs can be disabled completely with the
UNLOG
command.
RXSTATUSEVENT logs can be generated when a receiver status bit is set or cleared with the
STATUSCONFIG SET
and
STATUSCONFIG CLEAR
commands. Bits in the receiver status word can also
be promoted to act like error bits with the
STATUSCONFIG PRIORITY
command.
5.2
Receiver Status Word
The receiver status word indicates the current status of the receiver. This word is found in the header of
all logs and in the RXSTATUS log. In addition, the receiver status word is configurable.
The importance of the status bits with priority masks can be determined. For receiver status, setting a bit
in the priority mask causes the condition to trigger an error. The error causes the receiver to idle all
channels, turn off the antenna and disable the RF hardware, just like it would if a bit in the receiver error
word is set. Setting a bit in an Auxiliary Status priority mask causes the condition to set the bit in the
receiver status that corresponds to the auxiliary status.
Use the
STATUSCONFIG
command to configure the various status mask fields in the RXSTATUS log.
Use the masks to specify whether various status fields generate errors or event messages when set or
cleared.
Refer to the RXSTATUS log, RXSTATUSEVENT log and
STATUSCONFIG
command in the
(OM-20000129) for more detailed descriptions of these messages.
