A

Trimble Standard Interface Protocol

The error codes in Byte 1 of packet 46 are encoded into individual bits within the byte. The bit positions and their meanings are shown in Table A-36.

Table A-36

Report Packet 46

 

 

Error Code

Meaning if bit value = 1

Bit Position

 

0

(LSB)

Battery back-up failed (Note 3)

 

 

 

1

 

Signal Processor error (Note 1)

 

 

 

2

 

Alignment error, channel or chip 1 (Note 1)

 

 

 

3

 

Alignment error, channel or chip 2 (Note 1)

 

 

 

4

 

Antenna feed line fault (Open or Short)

 

 

 

5

 

Excessive reference frequency error (Note 2)

 

 

 

6

 

(Unused)

 

 

 

7

(MSB)

(Unused)

 

 

 

Note 1: After this error is detected, the bit remains set until the receiver is reset.

Note 2: This bit is "1" if the last computed reference frequency error indicated that the reference oscillator is out of tolerance. (Packet 2D requests the oscillator offset and packet 4D returns the oscillator offset to the user.)

Note 3: The Acutime 2000 does not support BB-RAM, the bit is always set. The ACE UTC supports BB-RAM, indicating BB-RAM checksum and the bit reports the state of the BB-RAM at system startup.

Acutime 2000 Synchronization Kit User Guide

A-47

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Trimble Outdoors AcutimeTM2000 Synchronization Kit, Part Number 45005-00-ENG manual Table A-36 Report Packet