Rohde & Schwarz FSV3000, User Manual

Page: 729 / 1489

General instrument setup
R&S
®
FSVA3000/ R&S
®
FSV3000
729 User Manual 1178.8520.02 ─ 08
Frequency Response active ........................................................................................732
Frequency Response File Information ........................................................................ 732
└ ID .................................................................................................................. 732
└ Filename ....................................................................................................... 733
└ Magnitude ..................................................................................................... 733
└ Phase ............................................................................................................733
Add Freq Resp File ..................................................................................................... 733
Remove Frequency Response File .............................................................................733
Preview ....................................................................................................................... 733
└ Selected File ................................................................................................. 733
└ IQ Mode ........................................................................................................ 734
└ Spectrum Mode .............................................................................................735
State
Enables or disables the general usage of user-defined frequency response correction
settings. If activated, the data in the active correction files is combined to create a filter.
This filter is applied to the measurement results of subsequent sweeps.
Remote command:
[SENSe:]CORRection:FRESponse<si>:USER:STATe
on page 1317
Testing the validity of the correction setting:
[SENSe:]CORRection:FRESponse<si>:USER:VALid?
on page 1318
Refresh
Retrieves the specified files again and creates a new combined filter. If enabled, the
filter is applied immediately.
Remote command:
[SENSe:]CORRection:FRESponse<si>:INPut<ip>:USER:REFResh
on page 1309
Ext. PA Correction
This function is only available if an external preamplifier is connected to the
R&S
FSV/A, and only for frequencies above 1 GHz. For details on connection, see the
preamplifier's documentation.
Using an external preamplifier, you can measure signals from devices under test with
low output power, using measurement devices which feature a low sensitivity and do
not have a built-in RF preamplifier.
When you connect the external preamplifier, the R&S FSV/A reads out the touchdown
(
.S2P
) file from the EEPROM of the preamplifier. This file contains the s-parameters of
the preamplifier. As soon as you connect the preamplifier to the R&S FSV/A, the pre-
amplifier is permanently on and ready to use. However, you must enable data correc-
tion based on the stored data explicitly on the R&S
FSV/A using this setting.
When enabled, the R&S FSV/A automatically compensates the magnitude and phase
characteristics of the external preamplifier in the measurement results. Any internal
preamplifier, if available, is disabled.
An active external preamplifier is also included in the calculation of the combined user-
defined frequency response correction filter and displayed in the preview for SnP files
(see
"Preview" on page 733).
Frequency response correction (R&S FSV/A-K544)