R&S FSU
Firmware Release 4.61 SP3
10
E-33
Known Issues
This chapter includes firmware problems related to the basic instrument firmware.
For issues related to option packages R&S FS-Kxx please refer to the corresponding release notes of the
individual option package.
The version numbers in brackets indicate the version in which the issue was observed for the first time.
1. (V4.41) The Network Configuration dialogs (menu SETUP – GENERAL SETUP – CONFIGURE
NETWORK) seem to lock up if no LAN is connected.
A timeout of 60s is effective in some cases if no LAN is connected to the instrument and therefore the
firmware seems to lock up.
Work around:
Connect the instrument to a local network before modification of the LAN configuration.
2. (V4.51) FS-K8: Some results in EDR Spurious Emissions measurement do not include the
Reference Level Offset.
Work around:
Use negative Antenna Gain instead of Reference Level Offset to include the offset of an
external attenuator.
3. (V4.61 SP2) A reduced display update speed occurs in remote operation for certain application
changes if the display update is switched on.
Changing from mobile applications K5/K7x/K8x to K10/K9x/K10x several times leads to a reduced display
update speed in remote operation if the display update is switched on ("SYST:DISP:UPD ON"). The manual
operation is not affected.
Work around:
Switch back to analyzer before activation of the next application.
Example:
*RST;:SYST:DISP:UPD ON
INST:SEL BWCD
' activate K72
… do some measurements in K72
INST:SEL SAN
' back to analyzer first, before entering K40 as
' a work around
INST:SEL PNO
'activate K40
… do some measurements in K40
INST:SEL SAN
' back to analyzer
Modified Functions
The version numbers in brackets indicate the version in which the function was modified.
1. (V3.11) Hardcopy screen comment changed to one comment, not one per screen.
2. (V3.31) Change to SMR setting files for external generator control:
This change enables significant improvements in frequency settling with logarithmic frequency step sizes.
3. (V3.41) Active transducer and adjust reference level procedure:
If transducers are active and the adjust reference level procedure (in measurements like ACP, occupied
bandwidth, signal statistics, etc.) is invoked, the
REFLVL ADJ AUTO/MANUAL
of
the
SETUP|TRANSDUCER menu is set to AUTO thus the best dynamic performance is obtained.
4. (V3.51) The External reference frequency is not any longer changeable via knob wheel to prevent
changing that value by chance
.
5. (V3.61) Marker peak list in continuous sweep mode
In continuous sweep mode the marker peak list is not any longer executing a single sweep and then peak
list search, but the peak list will immediately work on the current trace. This allows peak list functionality on
averaged or max holded traces in continuous sweep mode. The single sweep mode is unchanged.
6. (V3.61) VBW 30 MHz
