3 Spectrum Analyzer Mode
3.13 Phase and Amplitude vs Time Measurement
In VXT Models M9410A/11A and M9410E/11E in bypass frequency range
(1310MHz~5GHz), the Receiver RF path has a bank of filters that come after the RF
Attenuator in the signal path. Since this bank of filters precedes the mixer they are
known as the “Prefilter” bank. Their purpose is to eliminate unwanted in-band
mixing products by filtering out all but the desired frequencies before the signals get
to the mixer. There are 13 prefilter bands to cover the frequencies between 9kHz
and 6000MHz. The Prefilter provides the necessary rejection of the unwanted
signal.
Remote Command
[:SENSe]:<measurement>:PFILter[:STATe] ON | OFF | 1 | 0
[:SENSe]:<measurement>:PFILter[:STATe]?
Example Enable High Freq Prefilter for the Complex Spectrum Measurement in BASIC Mode:
:SPEC:PFIL ON
Enable High Freq Prefilter for the IQ Waveform Measurement, in multiple Modes:
:WAV:PFIL ON
Enable High Freq Prefilter for the Swept SA Measurement in SA Mode:
:SAN:PFIL ON
Dependencies Only appears in VXT models M9410A/11A with center frequency above 1310MHz, and M9410E/11E
in frequency range 1310MHz~5GHz
Preset See "Prefilter Presets" on page 1996 below
State Saved Saved in instrument state
Prefilter Presets
Meas Mode Preset
SPEC BASIC OFF
WAV BASIC, WCDMA, WLAN, LTEAFDD, LTEATDD, 5GNR, VMA OFF
MON WCDMA, WLAN, LTEAFDD, LTEATDD, 5GNR, VMA OFF
RHO WCDMA OFF
CDP WCDMA OFF
PCON WCDMA OFF
EVMQ WCDMA OFF
CHP WCDMA, WLAN, LTEAFDD, LTEATDD, 5GNR, VMA, SA OFF
OBW WCDMA, WLAN, LTEAFDD, LTEATDD, 5GNR, VMA, SA OFF
ACP WCDMA, LTEAFDD, LTEATDD, 5GNR, VMA, SA OFF
SEM WCDMA, WLAN, LTEAFDD, LTEATDD, 5GNR, VMA, SA OFF
PST WCDMA, WLAN, LTEAFDD, LTEATDD, 5GNR, VMA, SA OFF
PVT WLAN, LTEAFDD, LTEATDD, 5GNR OFF
EVM WLAN, LTEAFDD, LTEATDD, 5GNR OFF
FLAT WLAN OFF
EVMM WLAN OFF
CEVM LTEAFDD, LTEATDD OFF
1996 Spectrum Analyzer Mode User's &Programmer's Reference
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