Optimizing and Troubleshooting
R&S
®
FSW
1103
User Manual 1173.9411.02 ─ 19
Table 13-3: Power Sensor errors
Status bar message
Description
Zeroing could not be per-
formed
Zeroing could not be performed because the RF power applied is too
high.
Power sensor zero failed
13.3 Troubleshooting Remote Operation
If problems arise during measurement, try the following methods to solve them.
Uncompleted sequential commands - blocked remote channels
If a sequential command cannot be completed, for example because a triggered sweep
never receives a trigger, the remote control program will never finish and the remote
channel to the R&S
FSW is blocked for further commands. In this case, you must inter-
rupt processing on the remote channel in order to abort the measurement.
To regain control over a blocked remote channel
1. Send a "Device Clear" command from the control instrument to the R&S
FSW to
clear all currently active remote channels. Depending on the used interface and
protocol, send the following commands:
●
Visa
:
viClear()
●
GPIB
:
ibclr()
●
RSIB
:
RSDLLibclr()
The remote channel currently processing the uncompleted command is then ready
to receive further commands again.
2. On the remote channel performing the measurement, send the SCPI command
ABORt
to abort the current measurement and reset the trigger system.
Ignored commands
When a remote command attempts to define incompatible settings, the command is
ignored and the instrument status remains unchanged, i.e. other settings are not auto-
matically adapted. Therefore, control programs should always define an initial instru-
ment status (e.g. using the *RST command) and then implement the required settings.
Detecting false commands
If a remote program does not provide the expected results and you are using a GPIB
connection, you can log the commands and any errors that may occur. To activate the
SCPI error log function, in the "N Remote" dialog box, in the "GPIB" tab,
select"I/O Logging".
All remote control commands received by the R&S
FSW are recorded in the following
log file:
Troubleshooting Remote Operation
