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Digitizers Command Reference 111Chapter 3
*ESR?
*ESR? returns the value of the Standard Event Status Register. The register
is then cleared (all bits 0).
Comments Executable when initiated: YES
Coupled command: NO
Reset (*RST) condition: none
Power-On condition: register is cleared
*IDN?
*IDN? returns identification information for the E1563A and E1564A
Digitizers. The response consists of four fields:
HEWLETT-PACKARD, E1563A, 0, A.01.00
HEWLETT-PACKARD, E1564A, 0, A.01.00
Comments Field Descriptions: The first two fields identify this instrument as model
number E1563A or E1564A manufactured by Hewlett-Packard. The third
field is 0 since the serial number of the digitizer is unknown to the firmware.
The last field indicates the revision level of the firmware. The revision level
shown above is an example and the actual response you receive may be
different than the example.
Executable when initiated: YES
Coupled command: NO
Reset (*RST) condition: none
Power-On condition: register is cleared
*OPC
*OPC causes the E1563A and E1564A Digitizers to wait for all pending
operations to complete after which the Operation Complete bit (bit 0) in the
Standard Event Status Register is set. *OPC suspends any other activity
on the bus until the digitizer completes all commands sent to it prior to the
*OPC command.
Comments INIT vs. *OPC: The INIT command is considered complete when the
measurement is started. *OPC will not suspend activity once INIT is
processed and measurements start, but the instrument may not be finished
taking all readings initiated.