Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.6 Power Stat CCDF Measurement
Range 1 V Peak (10 dBm @ 50Ω) | 0.5 V Peak (4 dBm @ 50Ω) | 0.25 V Peak (-2 dBm @ 50Ω) | 0.125 V Peak (-8
dBm @ 50Ω)
Min 0.125 V
Max 1 V
Annotation The Range annotation replaces the RF Input context's "Atten" annotation
"Rng: <Q Range>". When Range = Man the annotation is preceded by "#"
The Q Range is not annotated in Input Path I Only or I+jQ. When I Range and Q Range are the same, the
annotation is "Rng: <Range>". When I Range and Q Range are different and the Input Path is Ind I/Q,
the annotation is "Rng: <I Range>, <Q Range>" and "Peak" is removed from the text. Examples:
"Rng: 1 V Peak" the Q Range is 1 V Peak
"Rng: 1 V, 0.5 V " the I Range is 1 V Peak and the Q Range is 0.5 V Peak
This is an alternate form of the command to allow entry as a power.
Remote
Command
[:SENSe]:POWer:IQ:Q:RANGe[:UPPer] <ampl>
[:SENSe]:POWer:IQ:Q:RANGe[:UPPer]?
Example Sets the Q Range to 0.5 V Peak when Reference Z is 50Ω, and to 1.0 V Peak when Reference Z is 75Ω:
:POW:IQ:Q:RANG 4 dBm
:POW:IQ:Q:RANG?
Notes The POWer form of the command is provided for convenience. It maps to the same underlying gain
range parameter as the VOLTage form of the command
The Reference Z (not the Q channel Input Z) is used to convert the power to peak voltage, which is then
used to set the Q Range as with the VOLTage form of the command. The power values of the 4 range
states (1V Peak, 0.5V Peak, 0.25V Peak, and 0.125V Peak) will vary with Reference Z. Here are some
examples:
50 Ω: 10, 4, -2, -8
75 Ω: 8.2, 2.2, -3.8, -9.8
600 Ω: -0.8, -6.8, -12.8, -18.9
Preset 10.0 dBm
Range -20 dBm to 10 dBm
Min -20 dBm
Max 10 dBm
Q Same as I
Many, but not all, usages require the I and Q channels to have an identical setup. To
simplify channel setup, Q Same as I causes the Q channel range to be mirrored from
the I channel. That way, you only need to set up one channel (the I channel). The I
channel values are copied to the Q channel, so at the time Q Same as I is Off, the I
and Q channel setups will be identical.
Spectrum Analyzer Mode User's &Programmer's Reference 1159

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)