Remote Control
R&S
®
FSVA/FSV
599Operating Manual 1176.7510.02 ─ 09
Bit No. Meaning
0-7 not used
8 I/Q data acquisition error
This bit is set if an error occurs during I/Q data acquisition because the input sample rates
or number of samples between the signal source and the R&S FSVA/FSV do not match.
9-14 not used
15 This bit is always set to 0.
4.1.6.4 Application of the Status Reporting System
The purpose of the status reporting system is to monitor the status of one or several
devices in a measuring system. To do this and react appropriately, the controller must
receive and evaluate the information of all devices. The following standard methods
are used:
●
Service request (SRQ) initiated by the instrument
●
Serial poll of all devices in the bus system, initiated by the controller in order to
find out who sent a SRQ and why
●
Parallel poll of all devices
●
Query of a specific instrument status by means of commands
●
Query of the error queue
Service Request
Under certain circumstances, the instrument can send a service request (SRQ) to the
controller. Usually this service request initiates an interrupt at the controller, to which
the control program can react appropriately. As evident from Figure 4-2, an SRQ is
always initiated if one or several of bits 2, 3, 4, 5 or 7 of the status byte are set and
enabled in the SRE. Each of these bits combines the information of a further register,
the error queue or the output buffer. The ENABle parts of the status registers can be
set such that arbitrary bits in an arbitrary status register initiate an SRQ. In order to
make use of the possibilities of the service request effectively, all bits should be set to
"1" in enable registers SRE and ESE.
Use of the command *OPC to generate an SRQ at the end of a sweep
1. CALL InstrWrite(analyzer, "*ESE 1") 'Set bit 0 in the ESE (Operation
Complete)
2. CALL InstrWrite(analyzer, "*SRE 32") 'Set bit 5 in the SRE (ESB)
3. CALL InstrWrite(analyzer, "*INIT;*OPC") ' Generate an SRQ after
operation complete
After its settings have been completed, the instrument generates an SRQ.
Remote Control - Basics
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