Keysight x-series Instruction Manual

3 Short-Range Comms & IoT Mode
3.2 Modulation Analysis Measurement
Use the eye diagram with an eye length of one (1) to observe the accuracy of the
symbol clock timing. You can also monitor the EVM (Error Vector Magnitude) in the
metrics table while adjusting the clock adjust to obtain the optimum symbol timing.
Clock Adjust is reset to 0.0 on power-up or when you select a Preset.
Remote Command
[:SENSe]:EVM:CADJust <real>
[:SENSe]:EVM:CADJust?
Example
:EVM:CADJ 0.5
:EVM:CADJ?
Preset 0.0
State Saved Yes
Min/Max -0.5/0.5
IQ Normalize
This control enables you to turn IQ Normalize on and off. When IQ Normalize is on,
the Meas Time and Ref Time data is normalized so the extreme points have a value
of 1. For quadrature modulation types, the outermost points of the constellation are
normalized to 1. For FSK constellations, the deviation is normalized to 1.
When IQ Normalize is turned off, the actual data values based on the input signal
level are plotted on the constellation.
When normalization is ON, the analyzer normalizes or scales the demodulated trace
data results to a nominal value of 1. Normalization is performed on these traces:
IQ measured time and IQ measured spectrum
IQ reference time and IQ reference spectrum
Error vector time and Error vector spectrum
Magnitude error
FSK measured time and FSK measured spectrum (FSK measurements)
FSK reference time and FSK reference spectrum (FSK measurements)
FSK error time and FSK error spectrum (FSK measurements)
Magnitude error (carrier) (FSK measurements)
Remote
Command
:CALCulate:EVM:NORMalize OFF | ON | 0 | 1
:CALCulate:EVM:NORMalize?
Example
:CALC:EVM:NORM ON
:CALC:EVM:NORM?
Preset ON
284 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)