Keysight x-series Instruction Manual

3 Short-Range Comms & IoT Mode
3.7 ACP Measurement
than the even-decibel steps, so one tradeoff for this superior relative accuracy is
reduced absolute amplitude accuracy.
Another disadvantage of the electronic attenuator is that the spectrum analyzer
loses its “Auto” setting, making operation less convenient.
Also, the relationship between the dynamic range specifications (TOI, SHI,
compression, and noise) and instrument performance are less well-known with the
electrical attenuator. With the mechanical attenuator, TOI, SHI, and compression
threshold levels increase dB-for-dB with increasing attenuation, and the noise floor
does as well. With the electronic attenuator, there is an excess attenuation of about
1 to 3dB between 0 and 3.6GHz, making the effective TOI, SHI, and so forth, less
well known. Excess attenuation is the actual attenuation relative to stated
attenuation. Excess attenuation is accounted for in the instrument calibration.
Adjust Atten for Min Clipping
Sets the combination of mechanical and electronic attenuation and gain based on
the current measured signal level so that clipping will be at a minimum.
This is an immediate action function, that is, it executes once, when the control is
pressed.
The algorithms that are used for the adjustment are documented under "Pre-Adjust
for Min Clipping" on page 1646.
Remote Command
[:SENSe]:POWer[:RF]:RANGe:OPTimize IMMediate
Example
:POW:RANG:OPT IMM
Notes Executing Adjust Atten for Min Clipping initiates the measurement
Dependencies Does not appear in the Swept SA, RTSA, Monitor Spectrum and Complex Spectrum measurements
Appears in the Waveform measurement in BASIC and 5G NR Modes
Adjust Atten
Allows you to select;
–
Electric attenuator only
–
Combination of Electric attenuator and Mechanical attenuator
when [:SENSe]:POWer[:RF]:RANGe:OPTimize IMMediate is executed.
Remote Command
[:SENSe]:POWer[:RF]:RANGe:OPTimize:TYPE EONLy | COMBined
[:SENSe]:POWer[:RF]:RANGe:OPTimize:TYPE?
Example
:POW:RANG:OPT:TYPE EONL
802 Short Range Comms & IoT Mode User's &Programmer's Reference

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)