IEEE488 Commands
Copyright © ITECH Electronic Co., Ltd. 71
Default value
see *PSC
*STB?
This query reads the Status Byte register, which contains the status summary
bits and the Output Queue MAV bit. Reading the Status Byte register does not
clear it. The input summary bits are cleared when the appropriate event
registers are read (see chapter “Programming the Status Registers” for more
information). A serial poll also returns the value of the Status Byte register,
except that bit 6 returns Request for Service (RQS) instead of Master Status
Summary (MSS). A serial poll clears RQS, but not MSS. When MSS is set, it
indicates that the electronic load has one or more reasons for requesting
service.
Query Syntax
*STB?
Parameters
None
Returned Parameters
<NR1> (register value)
Related Commands
*SRE *ESR *ESE
*TST?
This command causes the electronic load to do a self-test and report any error.
The reference information for the return value is as follows:
0: indicates no error
1: indicates that the module failed to initialize.
3: indicates that the module calibration data is lost.
4 or 5: indicates EEPROM error
Command Syntax
TST?
Parameters
None
Returned Parameters
<NR1> 0 indicates the electronic load has passed selftest.
Non-zero indicates an error code.
*TRG
This command generates a trigger to any system that has BUS selected as its
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