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*IDN?
(Identification Number)
(Query)
To the question *IDN?, the instrument returns the type of instrument and the software version.
Response format:
<instrument>,<firmware version>/<hardware version>,<serial number<NL>
<instrument>
<firmware version>
<hardware version>
<serial number>
*OPC
(Operation Complete)
(Command/Query)
The command *OPC authorises the setting to 1 of the OPC bit in the event register as soon as the current
operation is completed.
To the question *OPC?, the instrument returns the character ASCII "1" as soon as the current operation is
terminated.
*RST
(Reset)
(Command)
The command *RST reconfigures the instrument with the factory settings.
*SRE
(Service Request Enable)
(Command/Query)
The command *SRE <mask> positions the service request mask register.
<mask> is a value in format <NR1>, from 0 to 255.
A value of bit at 1 enables the same-rank bit of the status register to request a service (bit of the status register
contains 1). A bit value at 0 neutralizes it.
To the question *SRE?, the instrument returns the value of the service demand mask register.
Response format:
value in format <NR1> from 0 to 255.
Service demand mask register:
*STB?
(Status Byte)
(Query)
To the question *STB? the instrument returns the content of its status register (Status Byte Register).
The bit 6 returned indicates the MSS value (Master Summary Status) (at 1 if the instrument has a reason for
requesting a service).
Contrary to RQS, it is not reset to zero after reading the status register (RQS is accessible only by series
recognition, and falls to 0 at its end).
Status register:
*TRG
(Command)
The command *TRG starts an acquisition in the current mode "single" or "continuous".
Instrument name (CA922 or CA942)
Software version
PCB version
Instrument serial number
<value><NL>
99
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