Keysight Technologies U9361C Measurement Manual page 13

Column Title
Preamp
Coupling
Phase Noise
Opt = PNO
μW Path
Mixing Mode
U9361C/F/G/M RCal Receiver Calibrator Measurement Guide
Description
Off
Low Band: Use for frequencies less than
3.6 GHz
Full Range: Use for frequencies up to 50 GHz
AC or DC
Selects PNO mode used by LO synthesizer
system. Options include:
— Best Close-In
— Balance Noise and Spurs
— Best Spurs
— Best Wide-Offset
— Fast Tuning
— All
Options:
— Low Noise (LNP)
— μW Presel Bypass (MPB)
— Full Bypass (FBP)
Refers to 'high-side' or 'low-side' mixing (LO>RF
or LO<RF).
Normal is default for a given band (can be either
LO > RF or LO < RF).
Alternate if using alternate-side mixing for
digital demodulation to flip the side of image
products, then you would want to calibrate the
alternate mixing side.
All does both.
RCal Software – Configuration
Additional Information
Low Band path is not compatible with
Options LNP (Low Noise) or FBP (Full
Bypass).
Not all instruments support both AC and
DC.
Best Close-In: better phase noise
performance at the cost of higher spurs for
offset < 600 kHz*
Balance Noise and Spurs: balanced spur
and phase noise for offset < 600 kHz*
Best Spurs: spurs held to -90 dB at the cost
of phase noise for offset < 600 kHz*
Best Wide-Offset: optimized phase noise for
offset > 800 kHz*
Fast Tuning: provides faster tuning speed
All: calibrates for all PNO modes
*Phase Noise Optimization offset
frequencies vary based on the Synthesizer
option (EP0, EP1, EP2)
μW path reverts to STD if any points are <
3.6 GHz. In STD mode, the μW Preselector
is in the circuit and the Low Noise Path is
disabled.
LNP: bypasses low-band switch to lower
noise floor (only for signals > 3.6 GHz)
MPB: bypasses preselector to lower noise
floor (only for signals > 3.6 GHz)
FBP: bypasses both the low-band switch
and preselector for the best dynamic range
(only for signals > 3.6 GHz)
Normal is sufficient for most use cases.
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