Troubleshooting
R&S
®
ESW
725User Manual 1177.6298.02 ─ 08
When you select the error message bar or status message bar, the R&S ESW shows a
list of all current errors or status messages. In the error message bar, you can select
one of the error messages to open a dialog box that can help you to remedy the error.
Refer to the table below for information about which error message opens which dialog
box.
Table 17-2: List of keywords
AC COUP This label is displayed when a measurement is configured to be AC coupled, but
information in the DC range is detected. This situation can yield inaccurate measure-
ment results.
You can avoid this error message by changing the input coupling type.
Selecting the "AC Coup" error message opens a dialog box to configure the RF
input.
IF OVLD Overload of the IF signal path in the A/D converter or in the digital IF.
●
Increase the reference level.
Selecting the "IF OVLD" error message opens a dialog box to configure the ampli-
tude.
INPUT OVLD The signal level at the RF input connector exceeds the maximum.
The RF input is disconnected from the input mixer to protect the device. To re-enable
measurement, decrease the level at the RF input connector and reconnect the RF
input to the mixer input.
Selecting the "Input OVLD" error message opens a dialog box to configure the ampli-
tude.
LOUNL Error in the instrument's frequency processing hardware was detected.
NO REF Instrument was set to an external reference but no signal was detected on the refer-
ence input.
Selecting the "No Ref" error message opens a dialog box to configure the external
reference.
OVEN The optional OCXO reference frequency has not yet reached its operating tempera-
ture. The message usually disappears a few minutes after power has been switched
on.
RF OVLD Overload of the input mixer or of the analog IF path.
●
Increase the RF attenuation (for RF input).
●
Reduce the input level (for digital input)
Selecting the "RF OVLD" error message opens a dialog box to configure the ampli-
tude.
UNCAL One of the following conditions applies:
●
Correction data has been switched off.
●
No correction values are available, for example after a firmware update.
●
Record the correction data by performing a self alignment
Selecting the "Uncal" error message opens the "Self Alignment dialog box."
WRONG_FW The firmware version is out-of-date and does not support the currently installed hard-
ware. Until the firmware version is updated, this error message is displayed and self-
alignment fails.
Selecting the "Wrong_FW" error message opens a dialog box to manage firmware
and options.
Error Information
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