Rohde & Schwarz FSW13, User Manual

Page: 342 / 1150

Common Measurement Settings
R&S
®
FSW
342 User Manual 1173.9411.02 ─ 19
Message Description
"Ext. Generator Command Error!" Missing or wrong command in the generator setup file
(see
"Generator Setup Files" on page 335
"Ext. Generator Visa Error!!" Error with Visa driver provided with installation (very
unlikely)
Overloading
At a reference level of -10 dBm and at a external generator output level of the same
value, the R&S
FSW operates without overrange reserve. That means the R&S FSW is
in danger of being overloaded if a signal is applied whose amplitude is higher than the
reference line. In this case, either the message "RF OVLD" for overload or "IF OVLD"
for exceeded display range (clipping of the trace at the upper diagram border = over-
range) is displayed in the status line.
Overloading can be avoided as follows:
●
Reducing the output level of the external generator ( "Source Power" on page 345
in "External Generator > Measurement Configuration")
●
Increasing the reference level ( Reference Level in the "Amplitude" menu)
6.2.4.3 External Generator Control Settings
The "External Generator" settings are available in the "Input" dialog box if the
R&S
FSW External Generator Control option (R&S FSW-B10) is installed. For each
measurement channel one external generator can be configured. To switch between
different configurations define multiple measurement channels.
To display this dialog box, press the INPUT/OUPUT key and then select "External
Generator Config".
For more information on external generator control see chapter 6.2.4.2, "Basics on
External Generator Control" , on page 331.
● Interface Configuration Settings ............................................................................342
● Measurement Settings .......................................................................................... 344
● Source Calibration Functions ................................................................................347
Interface Configuration Settings
The interface settings for the connection to the external generator are defined in the
"Interface Configuration" subtab of the "External Generator" tab.
Data Input and Output