Symmetricom Z3801A, User Manual

Page: 83 / 98

Chapter 4 Command Listing and Status Information
Status Information
User’s Guide 4-17
Hardware Status Register Bit Assignments
P
= Positive Transition
N
= Negative Transition
E
= Enable
A
= Alarm LED
Bit Information Reported Comments
(NOTE: For every bit in this register,
STAT:PRES or SYST:PRES will cause an
alarm to be generated if the bit sets) P N E A
0 Selftest failure. Sets if something failed during powerup or
user-initiated selftest. 1 0 1 1
1 +15V supply out of range Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
2 -15V supply out of range Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
3 +5V supply out of range Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
4 Primary oven voltage out of
range Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
5 Secondary oven voltage out or
range Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
6 EFC voltage within 5% of limit Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
7 EFC voltage at limit Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
8 GPS 1 PPS failure Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
9 GPS Failure Continually evaluated during normal operation.
Sets if detected. 1 0 1 1
10 Time Interval Errors have
occurred. This is an event
only. (There is no condition
information; condition bit will
always be 0.) Continually evaluated during normal operation.
Sets if detected. Event only (i.e., condition bit
doesn't change).
_ _ 1 1
11 EEPROM write failure. This is
an event only. (There is no
condition information;
condition bit will always be 0.) Sets if there is a failure in any attempt to save
information to non-volatile memory
_ _ 1 1
12 Internal Reference Failure Continually evaluated during normal operation.
Sets if detected. 1 0 1 1