Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide 173
Programming the Status Register System
Accessing Status Register Information
Accessing Status Register Information
1.
Determine which register contains the bit that reports the condition. Refer
and
for register location
and names.
2.
Send the unique SCPI query that reads that register.
3.
Examine the bit to see if the condition has changed.
Determining What to Monitor
You can monitor the following conditions:
— current signal generator hardware and firmware status
— whether a particular condition (bit) has occurred
Monitoring Current Signal Generator Hardware and Firmware Status
To monitor the signal generator’s operating status, you can query the
condition registers. These registers represent the current state of the signal
generator and are updated in real time. When the condition monitored by a
particular bit becomes true, the bit sets to 1. When the condition becomes
false, the bit resets to 0.
Monitoring Whether a Condition (Bit) has Changed
The transition registers determine which bit transition (condition change)
should be recorded as an event. The transitions can be positive to negative,
negative to positive, or both. To monitor a certain condition, enable the bit
associated with the condition in the associated positive and negative registers.
Once you have enabled a bit through the transition registers, the signal
generator monitors it for a change in its condition. If this change in condition
occurs, the corresponding bit in the event register will be set to 1. When a bit
becomes true (set to 1) in the event register, it stays set until the event register
is read or is cleared. You can thus query the event register for a condition even
if that condition no longer exists.
To clear the event register, query its contents or send the *CLS command,
which clears
all
event registers.
Monitoring When a Condition (Bit) Changes
Once you enable a bit, the signal generator monitors it for a change in its
condition. The transition registers are preset to register positive transitions (a
change going from 0 to 1). This can be changed so the selected bit is detected
if it goes from true to false (negative transition), or if either transition occurs.
Deciding How to Monitor
You can use either of two methods described below to access the information
in status registers (both methods allow you to monitor one or more conditions).
Summary of Contents for X-Series
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