Symmetricom 59551A GPS Receiver User Manual


 
Chapter 5 Command Reference
Operating Status
5-56 Operating and Programming Guide
Monitoring Status/Alarm Conditions ___________
(continued)
!
Reading and Qualifying Alarms _____________________________
Figure 5-2. Alarm Condition and Enable Registers
This query returns the status of the front-panel Alarm LED, which indicates
that a change in operating conditions was recorded. The alarm remains active
even after the condition that caused it has gone away.
Theory
This query essentially reads the Master Summary bit (bit 6) of the Alarm
Condition Register.
At power-up, the alarm status is cleared.
:LED:ALARm?
RESPONSE FORMAT
Returns the status of the front-panel Alarm LED.
0 or 1
Alarm
Enable
Register
3
"OR"
not used
not used
not used
not used
7
5
Questionable Summary
Command Error Summary
Operation Summary
Alarm
&
&
&
Alarm
Condition
Register
3
Master Summary
6
not used
not used
not used
not used
7
5
Questionable Summary
Command Error Summary
Operation Summary
*
STB?
*
SRE <bit mask>
*
SRE?
"AND"
not used
:LED:ALARm?