Agilent Technologies 33220A User Manual

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Chapter 4 Remote Interface Reference
Phase Modulation (PM) Commands
4
PM:INTernal:FREQuency {<frequency>|MINimum|MAXimum}
PM:INTernal:FREQuency? [MINimum|MAXimum]
Set the frequency of the modulating waveform. Used only when the
Internal modulation source is selected (PM:SOUR INT command).
Select from 2 mHz to 20 kHz. The default is 10 Hz. MIN = 2 mHz.
MAX = 20 kHz. The :FREQ? query returns the internal modulating
frequency in hertz.
PM:DEViation {<deviation in degrees>|MINimum|MAXimum}
PM:DEViation? [MINimum|MAXimum]
Set the phase deviation in degrees. This value represents the peak
variation in phase of the modulated waveform from the carrier
waveform. Select any value from 0 to 360 degrees.
The default is 180
degrees
. MIN = 0 degrees. MAX = 360 degrees. The :DEV? query returns
the phase deviation in degrees.
•
If you select the External modulating source ( PM:SOUR EXT command ),
the deviation is controlled by the ±5V signal level present on the rear-
panel Modulation In connector. For example, if you have set the
frequency deviation to 180 degrees, then a +5V signal level
corresponds to a 180 degree phase deviation. Lower external signal
levels produce less deviation, and negative signal levels produce a
negative phase shift.
PM:STATe {OFF|ON}
PM:STATe?
Disable or enable PM. To avoid multiple waveform changes, you can
enable PM after you have set up the other modulation parameters.
The default is OFF. The :STAT? query returns “0” (OFF) or “1” (ON).
• The function generator will allow only one modulation mode to be
enabled at a time. For example, you cannot enable PM and AM at the
same time. When you enable PM, the previous modulation mode is
turned off.
• The function generator will not allow PM to be enabled at the same
time that sweep or burst is enabled. When you enable PM, the sweep
or burst mode is turned off.

Agilent Technologies 33220A Specifications

General

Function Generator Type	Arbitrary Waveform Generator
Output Amplitude	10 mVpp to 10 Vpp into 50 Ω
Output Impedance	50 Ω
Waveforms	Sine, Square, Ramp, Triangle, Noise, Arbitrary
Interface	GPIB, USB
Power Requirements	100 to 240 VAC, 50/60 Hz

Summary

Quick Start

To Prepare the Function Generator for Use

Check the list of supplied items and connect the power cord and turn on the function generator.

To Set the Output Frequency

Steps to change the output frequency to 1.2 MHz using the front panel controls.

To Rack Mount the Function Generator

Instructions for mounting the Agilent 33220A in a standard 19-inch rack cabinet.

Front-Panel Menu Operation

Front-Panel Menu Reference

Overview of the front-panel menus and examples of their use.

To Select the Output Termination

Setting the output termination impedance for accurate amplitude and offset measurements.

To Configure the Remote Interface

Setting up GPIB, USB, and LAN interfaces for remote instrument control.

Features and Functions

Output Configuration

Information on configuring the function generator for outputting various waveforms.

Amplitude Modulation (AM)

Details on setting up and performing amplitude modulation.

Calibration Overview

Introduction to calibration features and security settings.

Remote Interface Reference

SCPI Command Summary

Overview of SCPI command syntax and conventions.

Output Configuration Commands

Low-level SCPI commands for controlling output functions.

Interface Configuration Commands

Commands for configuring GPIB, LAN, and USB interfaces.

Error Messages

Command Errors

List and explanation of errors related to command syntax and parameters.

Execution Errors

List and explanation of errors resulting from incorrect command execution or settings.

Device Dependent Errors

Errors indicating potential hardware failures or memory corruption.

Application Programs

Introduction

Overview of example programs for controlling the instrument via SCPI.

Program Listings

Includes examples like Sine Waveform, Amplitude Modulation, and Pulse Width Modulation.

Tutorial

Direct Digital Synthesis

Explanation of the DDS signal generation technique used by the instrument.

Creating Arbitrary Waveforms

Guide on creating custom waveforms using the front panel or software.

Signal Imperfections

Description of harmonic, non-harmonic, and phase noise imperfections in signals.

Specifications

Waveforms

Lists standard and built-in arbitrary waveform types.

Common Characteristics

Details general specifications like frequency accuracy and amplitude range.

Product Dimensions

Provides physical dimensions for benchtop and rack-mount configurations.