Agilent Technologies 2110-0457, Руководство пользователя

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Chapter 4 Remote Interface Reference
The SCPI Status Registers
102
The 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 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 constant voltage mode, bit 0 true
indicates constant current mode, both bits true indicates neither the voltage
nor the current is regulated, and both bits false indicates 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
STAT:QUES?
(Status Questionable
Event register) command.
For example, 16 is returned when you have queried the status of the
questionable event register, the temperature condition is questionable.
The Questionable Status Enable register is cleared when:
• You execute
STAT:QUES:ENAB 0
command.