Remote Interface Reference 3
SCPI Status Registers
E364xA User’s and Service Guide 111
Questionable instrument status register
The questionable instrument register provides information
about unexpected operations for each of the two supplies.
For example, if the output1 supply is in the constant voltage
mode and loses regulation, then bit 1 is set indicating a
possible overload in the output1 supply. The output2 supply
is reported as bit 2. Send the command STAT:QUES:INST?
to read the register. The STAT:QUES:INST:ISUM<n>
registers must be enabled to make use of the questionable
instrument register. Send the command
STAT:QUES:INST:ISUM<n>:ENAB 515 to enable output n.
Questionable instrument summary register
There are two questionable instrument summary registers,
one for each supply output. These registers provide
information about voltage and current regulation. Bit 0 is set
when the voltage becomes unregulated, and bit 1 is set if the
current becomes unregulated. For example, if a supply which
is operating as a voltage source (constant voltage mode)
momentarily goes to the constant current mode, bit 0 is set
to indicate that the voltage output is not regulated. Bit 9
reports that the overvoltage protection circuit has tripped.
To read the register for each supply, send the command
STAT:QUES:INST:ISUM<n>?, where n is 1 or 2.
To determine the operating mode (CV or CC) for the power
supply, send STAT:QUES:INST:ISUM<n>:COND?, where n is
1 or 2 depending on the output. Bit 1 true indicates the
output is in the constant voltage mode, bit 0 true indicates
the constant current mode, both bits true indicate neither
the voltage nor the current is regulated, and both bits false
indicate the outputs of the power supply are off.
The Questionable Status event register is cleared when:
• you execute the *CLS (clear status) command.
• you query the event register using the STAT:QUES?
(status questionable event register) command.
To Next Page
Loading...
Need help?
General
