Specifications

*RST does not affect:
·
Calibration data
·
The output queue
·
The Service Request Enable (SRE) register
·
The Event Status Enable (ESE) register
*SRE <mask>
Service Request Enable. When a service request event occurs, it sets a
corresponding bit in the Status Byte Register (this happens whether or not the event
has been enabled (unmasked) by *SRE). The *SRE command allows events to be
identified that will assert a GPIB service request (SRQ). When an event is enabled
by *SRE and that event occurs, it sets a bit in the Status Byte Register and issues an
SRQ to the computer (sets the GPIB SRQ line true). Enable an event by specifying
its decimal weight for <mask>. To enable more than one event, specify the sum of
the decimal weights. Refer to “The Status Byte Register” for a table showing the
contents of the Status Byte Register. The C-SCPI type for <mask>isint16.
Bit # 7 6 5 4 3 2 1 0
Weighted
Value
128 64 32 16 8 4 2 1
Event
Operation
Status
Request
Service
Standard
Event
Message
Available
Questionable
Status
not used not used not used
*SRE?
Status Register Enable Query. Returns the weighted sum of all enabled (unmasked)
events (those enabled to assert SRQ) in the Status Byte Register. The C-SCPI type
for this returned value is int16.
*STB?
Status Byte Register Query. Returns the weighted sum of all set bits in the Status
Byte Register. Refer to the *ESE command earlier in this chapter for a table
showing the contents of the Status Byte Register. *STB? does not clear bit 6
(Service Request). The Message Available bit (bit 4) may be cleared as a result of
reading the response to *STB?. The C-SCPI type for this returned value is int16.
*TRG
Trigger. Triggers an instrument when the trigger source is set to bus (TRIG:SOUR
BUS command) and the instrument is in the Wait for Trigger state.
VT1419A Command Reference
Common Command Reference
316 Chapter 6
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