Symmetricom Z3801A, User Manual

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Chapter 4 Command Listing and Status Information
Status Information
4-14 User’s Guide
Status Information
Listed below are the specific bit assignments for the status registers
that have assignments that are customized by the timing Receiver.
See Figure 4-1 for a simplified illustration of the relationships between
the Status Registers.
Figure 4-1. Simplified Relationships Between Status Registers
Standard Event Register Bit Assignments
Powerup
Holdover
Hardware
Operation
Questionable
Standard Event
Status Byte Registers &
Service Request Enable
Bit Information Reported Comments
0 Not Used ____
1 Not Used ____
2 Not Used ____
3 Device-dependent Error These are errors in the -3xx range or any positive numbered errors.
4 Execution Error These are errors in the -2xx range.
5 Command Error These are errors in the -1xx range.
6 Not Used ____
7 Power-On Identifies that the unit has undergone a transition to power-on
(useful for detecting if power has been lost).