Keysight E6680A - Page 175

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
µW Path: Bypass
If Full Bypass Enable is selected but the LNP switch is not thrown:
µW Path: FByp,Off
If Full Bypass Enable is selected and the LNP switch is thrown:
µW Path: FByp,On
µW Path Control Auto
In VMA, WLAN, 5G NR, CQM Modes, an Auto/Man switch is added to µW Path
Control:
This allows the function to automatically switch based on certain Auto Rules as
shown below:
VMA Mode
Measurement µW Path Control Auto behavior
Digital Demod Use Standard Path unless tuned frequency > 3.6GHz and IFBW > 15MHz, in
which case choose Preselector Bypass
Monitor Spectrum Always Presel Bypass
IQ Waveform Use Standard Path unless tuned frequency > 3.6GHz and IFBW >15 MHz, in
which case choose Preselector Bypass
Custom OFDM Use Standard Path unless tuned frequency > 3.6GHz and IFBW > 15MHz, in
which case choose Preselector Bypass
Channel Power Always Presel Bypass
Occupied BW Always Presel Bypass
CCDF Use Standard Path unless tuned frequency > 3.6GHz and IFBW > 15MHz, in
which case choose Preselector Bypass
ACP Always Presel Bypass
SEM Always Presel Bypass
Spurious
Emissions
Always Standard Path
WLAN Mode
Measurement µW Path Control Auto behavior
Modulation Always Presel Bypass
175 IQ Analyzer Mode User's &Programmer's Reference