GW Instek AFG-125, AFG-225, AFG-125P, AFG-225P User guide

Arbitrary Function Generator

AFG-125/AFG-225/AFG-125P/AFG-225P

USER MANUAL

GW INSTEK PART NO. 82AF-12500E01

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will Corporation.

The information in this manual was correct at the time of printing. However, Good Will continues to improve its products and therefore reserves the right to change the specifications, equipment, and maintenance procedures at any time without notice.

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

Table of Contents
Table of Contents
SAFETY INSTRUCTIONS..................................	7
Safety Symbols .......................................................................	7
Safety Guidelines....................................................................	8
GETTING STARTED........................................	11
Main Features ...................................................................	11
Panel Overview..................................................................	13
Front Panel ...........................................................................	13
Rear Panel.............................................................................	14
System Requirements.........................................................	15
Software Installation ............................................................	15
Setup the Signal Generator..................................................	16
Default Settings ................................................................	17
REMOTE INTERFACE .....................................	19
Establishing a Remote Connection ....................................	19
Configure USB interface.......................................................	19
Remote control terminal connection...................................	20
Command Syntax .................................................................	21
System Command .............................................................	26
SYSTem:ERRor? ...................................................................	26
*IDN? ...................................................................................	26
*RST .....................................................................................	27
SYSTem:VERSion?................................................................	27
*OPC ....................................................................................	27
*OPC?...................................................................................	28
*WAI .....................................................................................	28
Status Register Commands ...............................................	29
*CLS......................................................................................	29
*ESE......................................................................................	29
*ESR?....................................................................................	30
*STB?....................................................................................	30
*SRE .....................................................................................	31
Apply Commands ..............................................................	32
SOURce[1|2]:APPLy:SINusoid..............................................	34
SOURce[1|2]:APPLy:SQUare ................................................	34
SOURce[1|2]:APPLy:RAMP...................................................	35

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AFG-200 SERIES USER MANUAL
SOURce[1|2]:APPLy:PULSe..................................................	35
SOURce[1|2]:APPLy:NOISe..................................................	36
SOURce[1|2]:APPLy:USER ...................................................	36
SOURce[1|2]:APPLy? ............................................................	37
Output Commands ............................................................	38
SOURce[1|2]:FUNCtion .......................................................	38
SOURce[1|2]:FREQuency .....................................................	39
SOURce[1|2]:AMPlitude.......................................................	41
SOURce[1|2]:DCOffset.........................................................	42
SOURce[1|2]:SQUare:DCYCle..............................................	43
SOURce[1|2]:RAMP:SYMMetry............................................	44
OUTPut[1|2] .........................................................................	45
OUTPut[1|2]:LOAD ..............................................................	45
SOURce[1|2]:VOLTage:UNIT...............................................	46
Pulse Configuration Commands ........................................	48
SOURce[1|2]:PULSe:PERiod ................................................	48
SOURce[1|2]:PULSe:WIDTh.................................................	49
Amplitude Modulation (AM) Commands ...........................	50
AM Overview........................................................................	50
SOURce[1|2]:AM:STATe.......................................................	51
SOURce[1|2]:AM:INTernal:FUNCtion .................................	51
SOURce[1|2]:AM:INTernal:FREQuency...............................	52
SOURce[1|2]:AM:DEPTh......................................................	52
Frequency Modulation (FM) Commands............................	54
FM Overview ........................................................................	54
SOURce[1|2]:FM:STATe .......................................................	55
SOURce[1|2]:FM:INTernal:FUNCtion .................................	55
SOURce[1|2]:FM:INTernal:FREQuency ...............................	56
SOURce[1|2]:FM:DEViation .................................................	56
Frequency-Shift Keying (FSK) Commands ..........................	59
FSK Overview .......................................................................	59
SOURce[1|2]:FSKey:STATe...................................................	59
SOURce[1|2]:FSKey:FREQuency ..........................................	60
SOURce[1|2]:FSKey:INTernal:RATE.....................................	61
Phase Modulation (PM)Commands ...................................	62
PM Overview........................................................................	62
SOURce[1|2]:PM:STATe.......................................................	63
SOURce[1|2]:PM:INTernal:FUNction..................................	63
SOURce[1|2]:PM:INTernal:FREQuency ...............................	64
SOURce[1|2]:PM:DEViation.................................................	64
SUM Modulation (SUM) Commands ..............................	66
SUM Overview .....................................................................	66
SOURce[1|2]:SUM:STATe ....................................................	67

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Table of Contents
SOURce[1|2]:SUM:INTernal:FUNction................................	67
SOURce[1|2]:SUM:INTernal:FREQuency.............................	68
SOURce[1|2]:SUM:AMPL .....................................................	68
Frequency Sweep Commands ............................................	70
Sweep Overview ...................................................................	70
SOURce[1|2]:SWEep:STATe .................................................	71
SOURce[1|2]:FREQuency:STARt ..........................................	72
SOURce[1|2]:FREQuency:STOP...........................................	72
SOURce[1|2]:FREQuency:CENTer........................................	73
SOURce[1|2]:FREQuency:SPAN...........................................	74
SOURce[1|2]:SWEep:SPACing..............................................	75
SOURce[1|2]:SWEep:TIME...................................................	75
SOURce[1|2]:SWEep:SOURce..............................................	76
SOURce[1|2]:MARKer:FREQuency.......................................	77
SOURce[1|2]:MARKer...........................................................	77
Burst Mode Commands .....................................................	79
Burst Mode Overview...........................................................	79
SOURce[1|2]:BURSt:STATe ..................................................	81
SOURce[1|2]:BURSt:MODE .................................................	81
SOURce[1|2]:BURSt:NCYCles ..............................................	82
SOURce[1|2]:BURSt:INTernal:PERiod .................................	83
SOURce[1|2]:BURSt:PHASe .................................................	83
SOURce[1|2]:BURSt:TRIGger:SOURce ................................	84
SOURce[1|2]:BURSt:TRIGger:DELay....................................	85
SOURce[1|2]:BURSt:TRIGger:SLOPe...................................	86
SOURce[1|2]:BURSt:GATE:POLarity ....................................	86
SOURce[1|2]:BURSt:OUTPut:TRIGger:SLOPe ....................	87
SOURce[1|2]:BURSt:OUTPut[1|2]:TRIGger..........................	88
Arbitrary Waveform Commands .........................................	89
Arbitrary Waveform Overview ..............................................	89
SOURce[1|2]:FUNCtion USER .............................................	90
SOURce[1|2]:DATA:DAC ......................................................	90
SOURce[1|2]:ARB:EDIT:COPY .............................................	91
SOURce[1|2]:ARB:EDIT:DELete ...........................................	92
SOURce[1|2]:ARB:EDIT:DELete:ALL ....................................	92
SOURce[1|2]:ARB:EDIT:POINt.............................................	92
SOURce[1|2]:ARB:EDIT:LINE...............................................	93
SOURce[1|2]:ARB:EDIT:PROTect.........................................	93
SOURce[1|2]:ARB:EDIT:PROTect:ALL .................................	94
SOURce[1|2]:ARB:EDIT:UNProtect......................................	94
SOURce[1|2]:ARB:OUTPut...................................................	94
Phase ................................................................................	95
SOURce[1|2]:PHASe.............................................................	95
SOURce[1|2]:PHASe:SYNChronize......................................	95

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AFG-200 SERIES USER MANUAL
Couple ...............................................................................	96
SOURce[1|2]:FREQuency:COUPle:MODE ..........................	96
SOURce[1|2]:FREQuency:COUPle:OFFSet..........................	96
SOURce[1|2]:FREQuency:COUPle:RATio ............................	97
SOURce[1|2]:AMPlitude:COUPle:STATe .............................	97
SOURce[1|2]:TRACk .............................................................	97
Sync ..................................................................................	99
OUTPut:SYNC......................................................................	99
OUTPut[1|2]:SYNC:MODE ..................................................	99
OUTPut[1|2]:SYNC:POLarity..............................................	100
OUTPut:SYNC:SOURce.....................................................	101
Power Commands............................................................	102
VOUTput ............................................................................	102
VSET ...................................................................................	102
Save and Recall Commands .............................................	104
*SAV ...................................................................................	104
*RCL ...................................................................................	104
MEMory:STATe:DELete .....................................................	104
MEMory:STATe:DELete ALL ..............................................	105
Error Messages................................................................	106
Command Error Codes ......................................................	106
Execution Errors.................................................................	108
Query Errors.......................................................................	115
Arbitrary Waveform Errors.................................................	115
SCPI Status Register ........................................................	117
Register types.....................................................................	117
AFG-200 SERIES Status System ........................................	118
Questionable Status Register ............................................	119
Standard Event Status Registers .......................................	119
The Status Byte Register ....................................................	121
Output Queue....................................................................	122
Error Queue........................................................................	122
APPDENIX....................................................	123
AFG-200 Specifications....................................................	123

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TABLE OF CONTENTS

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that should be followed when operating and storing the function generator. Read the following before any operation to ensure your safety and to keep the function generator in the best condition.

Safety Symbols

These safety symbols may appear in this manual or on the instrument.

Warning: Identifies conditions or practices that WARNING could result in injury or loss of life.

Caution: Identifies conditions or practices that CAUTION could result in damage to the function generator or

to other objects or property.

DANGER High Voltage

Attention: Refer to the Manual

Protective Conductor Terminal

Earth (Ground) Terminal

DANGER Hot Surface

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AFG-200 SERIES USER MANUAL

Double Insulated

Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased.

Safety Guidelines

General

Guideline

CAUTION

•Do not place heavy objects on the instrument.

•Do not place flammable objects on the instrument.

•Avoid severe impact or rough handling that may damage the function generator.

•Avoid discharges of static electricity on or near the function generator.

•Use only mating connectors, not bare wires, for the terminals.

•The instrument should only be disassembled by a qualified technician.

Power Supply	• DC Input voltage: 5V/2A.
WARNING	• Do not exceed an input voltage of 5V±5%.
Fuse	• Fuse type: F3.15A/125V.
WARNING	• Only qualified technicians should replace the
	fuse.
	• To ensure fire protection, replace the fuse only
	with the specified type and rating.
	• Disconnect the power and all test leads before
	replacing the fuse.
	• Make sure the cause of fuse blowout is fixed
	before replacing the fuse.

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			AFG-200 SERIES USER MANUAL
	Cleaning the	•	Disconnect the power cord before cleaning the
	function		function generator.
	generator	•	Use a soft cloth dampened in a solution of mild
			detergent and water. Do not spray any liquid
			into the function generator.
		• Do not use chemicals containing harsh products
			such as benzene, toluene, xylene, and acetone.
	Operation	•	Location: Indoor, no direct sunlight, dust free,
	Environment		almost non-conductive pollution (Note below)
			and avoid strong magnetic fields.
		• Relative Humidity: < 80%
		•	Altitude: < 2000m
		• Temperature: 0°C to 40°C
		(Pollution Degree) EN 61010-1:2010 specifies pollution degrees and
		their requirements as follows. The function generator falls under
		degree 2.
		Pollution refers to “addition of foreign matter, solid, liquid, or
		gaseous (ionized gases), that may produce a reduction of dielectric
		strength or surface resistivity”.
		• Pollution degree 1: No pollution or only dry, non-conductive
			pollution occurs. The pollution has no influence.
		• Pollution degree 2: Normally only non-conductive pollution
			occurs. Occasionally, however, a temporary conductivity caused
			by condensation must be expected.
		• Pollution degree 3: Conductive pollution occurs, or dry,
			non-conductive pollution occurs which becomes conductive due
			to condensation which is expected. In such conditions,
			equipment is normally protected against exposure to direct
			sunlight, precipitation, and full wind pressure, but neither
			temperature nor humidity is controlled.
	Storage	•	Location: Indoor
	environment	•	Relative Humidity: < 70%
		•	Temperature: -10°C ~ 70°C

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		AFG-200 SERIES USER MANUAL
	Disposal	Do not dispose this instrument as unsorted
		municipal waste. Please use a separate collection
		facility or contact the supplier from which this
		instrument was purchased. Please make sure
		discarded electrical waste is properly recycled to
		reduce environmental impact.

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AFG-200 SERIES USER MANUAL

GETTING STARTED

The Getting started chapter introduces the function generator’s main features, appearance and introduces a quick instructional summary of some of the basic functions. For comprehensive operation instructions, please see the operation chapter.

Main Features

Model

Frequency Range

Output Channels

Power Output

Performance

AFG-125	AFG-125P	AFG-225	AFG-225P
	1uHz-25MHz
1	1	2	2
None	Yes	None	Yes

•DDS signal generator

•1μHz resolution over the full range

•20ppm frequency stability

•Arbitrary Waveform Capability 120 MSa/s sample rate

60 MSa/s repetition rate

4 k-point waveform length

4k waveform memory, 10 groups User-defined output

DWR (Direct waveform reconstruction) capability PC waveform editing

Features	• Sine, Square, Ramp, Pulse & Noise as standard
		waveforms
	• Internal LIN/LOG sweeps with marker output
	• AM, FM, FSK, SUM modulation
	•	Triggered burst function
	• Save/recall 10 setup memories
	•	Output overload protection

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			AFG-200 SERIES USER MANUAL
	Interface	• USB interface as standard
		•	AWES (arbitrary waveform editing software) PC

Power Supply (AFG-125P/ 225P only)

software

•2.5V/3.3V/5V supply output

•0.6A current output

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AFG-200 SERIES USER MANUAL

Panel Overview

Front Panel

Power Supply		These LEDs indicate the immediate
Status LEDs		status of the power supply function
		on the AFG-125P/225P:
		2.5V	2.5V output is on
		3.5V	3.5V output is on
		5V	5V output is on
		OVER LOAD	Overload condition
Negative Output		Negative output port
GND		Ground port
Positive Output		Positive output port
SYNC	SYNC	Sync output. A TTL signal is output
		as the sweep marker or sync output
		signal.
CH1	CH1	CH1 (Signal 1) output.

50Ω

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AFG-200 SERIES USER MANUAL

CH2

CH2

CH1 (Signal 2) output (AFG-225/AFG-225P only).

50Ω

Rear Panel

Vent	USB Device Port	Input Power
		DC 5V
		INPUT
		2A MAX.

Vent	Cooling vent.
USB Device Port	Interfaces with the GDS-2000A and
	can also provide power.
Input Power	Input power source:
	DC 5V; 2A max.

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AFG-200 SERIES USER MANUAL

System Requirements

Operating System	Microsoft Windows XP
	Microsoft Windows 7
	Microsoft Windows Vista
CPU	300MHz
Memory	256MB
Hard Disk Space	100MB
Supports	The USB 2.0 Universal Serial Bus specification is

USB2.0(compatible supported with transfer rates from USB1.1 to with USB1.1) USB2.0.

Software Installation

Close all the programs that are currently running.

Insert the included installation CD into your CD-ROM drive, and execute the following steps:

1.Execute the installer on the CD. Install the software step by step by following the prompts.

2.Connect hardware after the installation is completed. The computer will automatically search for the new hardware and install its driver. You can start to use the signal generator after the driver is installed.

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AFG-200 SERIES USER MANUAL

Setup the Signal Generator

PC	1.	Plug the power adapter into
Communication		the power input port on the
		rear panel.
	2.	Connect the type B end of
		the accessory USB cable to
		the USB B port on the signal
		generator, and then connect
		the type A end of the USB
		cable to the USB A port on
		the computer.
	3.	Turn on the PC and control the signal generator
		through the PC software.

The signal generator is ready for use.

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AFG-200 SERIES USER MANUAL

Default Settings

The command *RST is used to restore the default *RST panel settings.

Output Settings	Function	Sine Wave
	Frequency	1kHz
	Amplitude	1.000 Vpp
	Offset	0.00V dc
	Output units	Vpp
	Output terminal	50Ω
	Power	OFF
	Sync	OFF
Modulation
(AM/FM/FSK/
PM/SUM)	Carrier wave	1kHz sine wave
	Modulation wave	100Hz sine wave
	AM depth	100%
	FM deviation	100Hz
	FSK hop frequency	100Hz
	FSK frequency	10Hz
	PM phase deviation	180˚
	SUM amplitude	50%
	Modem status	Off
Sweep	Start/Stop frequency	100Hz/1kHz
	Sweep time	1s
	Sweep type	Linear

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AFG-200 SERIES USER MANUAL

	Sweep status	Off
Burst	Burst frequency	1kHz
	Ncycle	1
	Burst period	10ms
	Burst starting phase	0˚
	Burst status	Off
System Settings	Power off signal	On
	Error queue	Cleared
	Memory settings	No change
	Output	Off

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AFG-200 SERIES USER MANUAL

REMOTE INTERFACE

Establishing a Remote Connection ....................................	19
Configure USB interface.......................................................	19
Remote control terminal connection...................................	20
Command Syntax .................................................................	21

Establishing a Remote Connection

The AFG-200 supports USB remote connections

Configure USB interface

USB	PC side connector
configuration	AFG-200 series	Type B, slave
	side connector
	Speed	1.1/2.0 (full speed)

Panel Operation 1. Connect the USB cable to the rear panel USB B (slave) port.

2. When the PC asks for the USB driver, select XXXXXXX.inf included in the software package or download the driver from the GW website, www.gwinstek.com.

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AFG-200 SERIES USER MANUAL

Remote control terminal connection

Terminal	Invoke the terminal application such as MTTTY
application	(Multi-Threaded TTY). For USB, set the COM port,
	baud rate, stop bit, data bit, and parity
	accordingly.
	To check the COM port No, see the Device
	Manager in the PC. For WinXP, Control panel →
	System → Hardware tab.

Functionality check

Run this query command via the terminal. *idn?

This should return the Manufacturer, Model number, Serial number, and Firmware version in the following format.

GW INSTEK, AFG-X25X, SN:XXXXXXXX,Vm.mm

Note: ^j or ^m can be used as the terminal character when using a terminal program.

PC Software The proprietary PC software, downloadable from GWInstek website, can be used for remote control.

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		AFG-200 SERIES USER MANUAL
	Command Syntax
	Compatible	• IEEE488.2, 1992 (fully compatible)
	standard	• SCPI, 1994 (partially compatible)
	Command Tree	The SCPI standard is an ASCII based standard that
		defines the command syntax and structure for
		programmable instruments.

Commands are based on a hierarchical tree structure. Each command keyword is a node on the command tree with the first keyword as the root node. Each sub node is separated with a colon.

Shown below is a section of the SOURce[1|2] root node and the :PM and :PULSe sub nodes.

Command types Commands can be separated in to three distinc types, simple commands, compound commands and queries.

Simple	A single command with/without
	a parameter
Example	*OPC
Compound	Two or more commands
	separated by a colon (:)
	with/without a parameter
Example	SOURce1:PULSe:WIDTh

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			AFG-200 SERIES USER MANUAL
		Query	A query is a simple or compound
			command followed by a question
			mark (?). A parameter (data) is
			returned. The maximum or
			minimum value for a parameter
			can also be queried where
			applicable.
		Example	SOURce1:FREQuency?
			SOURce1:FREQuency? MIN

Command forms Commands and queries have two different forms, long and short. The command syntax is written with the short form of the command in capitals and the remainder (long form) in lower case.

The commands can be written in capitals or lower-case, just so long as the short or long forms are complete. An incomplete command will not be recognized.

Below are examples of correctly written commands:

LONG SOURce1:DCOffset

SOURCE1:DCOFFSET

source1:dcoffset

SHORT SOUR1:DCO

sour1:dco

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			AFG-200 SERIES USER MANUAL
	Command					1: command header
	Format					2: single space
						3: parameter
						4: message terminator

Square Brackets [] Commands that contain squares brackets indicate that the contents are optional. The function of the command is the same with or without the square bracketed items. Brackets are not sent with the command.

For example, the frequency query below can use any of the following 3 forms:

SOURce1:FREQuency? [MINimum|MAXimum]

	SOURce1:FREQuency? MAXimum
	SOURce1:FREQuency? MINimum
	SOURce1:FREQuency?
Braces {}	Commands that contain braces indicate one item
	within the braces must be chosen. Braces are not
	sent with the command.
Angled Brackets	Angle brackets are used to indicate that a value
<>	must be specified for the parameter. See the
	parameter description below for details. Angled
	brackets are not sent with the command.
Bars |	Bars are used to separate multiple parameter
	choices in the command format.
Parameters	Type	Description	Example
	<Boolean>	Boolean logic	0, 1/ON,OFF
	<NR1>	integers	0, 1, 2, 3
	<NR2>	decimal numbers	0.1, 3.14, 8.5
	<NR3>	floating point	4.5e-1, 8.25e+1
	<NRf>	any of NR1, 2, 3	1, 1.5, 4.5e-1

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AFG-200 SERIES USER MANUAL

	<NRf+>	NRf type with a	1, 1.5, 4.5e-1
	<Numeric>	suffix including	MAX, MIN,
		MINimum,
		MAXimum or
		DEFault
		parameters.
	<aard>	Arbitrary ASCII
		characters.
	<discrete>	Discrete ASCII	IMM, MAN
		character
		parameters
	<frequency>	NRf+ type	1 KHZ, 1.0 HZ,
	<peak deviation	including	ΜHZ
	in Hz>	frequency unit
	<rate in Hz>	suffixes.
	<amplitude>	NRf+ type	VPP
		including voltage
		peak to peak.
	<offset>	NRf+ type	V
		including volt
		unit suffixes.
	<seconds>	NRf+ type	NS, S MS US
		including time
		unit suffixes.
	<percent>	NRf type	N/A
	<depth in
	percent>
Message	LF CR	line feed code (new line) and
terminators		carriage return.
	LF	line feed code (new line)
	EOI	IEEE-488 EOI (End-Or-Identify)
Note	^j or ^m should be used when using a terminal
	program.

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		AFG-200 SERIES USER MANUAL
Command	Space	A space is used to separate a
Separators		parameter from a
		keyword/command header.
	Colon (:)	A colon is used to separate
		keywords on each node.
	Semicolon (;)	A semi colon is used to separate
		subcommands that have the same
		node level.
		For example:
		SOURce[1|2]:DCOffset?
		SOURce[1|2]:OUTPut?
		ÆSOURce1:DCOffset?;OUTPut?
	Colon +	A colon and semicolon can be
	Semicolon (:;)	used to combine commands from
		different node levels.
		For example:
		SOURce1:PM:SOURce?
		SOURce:PULSe:WIDTh?
		ÆSOURce1:PM:SOURce?:;SOURce:
		PULSe:WIDTh?
	Comma (,)	When a command uses multiple
		parameters, a comma is used to
		separate the parameters.
		For example:
		SOURce:APPLy:SQUare 10KHZ, 2.0
		VPP, -1V

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AFG-200 SERIES USER MANUAL

System Command

SYSTem:ERRor?			System Query
Description	Reads an error from the error queue. See page 122
	for details regarding the error queue.
Query Syntax	SYSTem:ERRor?
Return parameter	<string>	Returns an error string,
		<256 ASCII characters.
Example	SYSTem:ERRor?
	-138 Suffix not allowed
	Returns an error string.
*IDN?			System Query
Description	Returns the function generator manufacturer,
	model number, serial number and firmware
	version number in the following format:
	GW INSTEK,AFG-X25X,SN:XXXXXXXX,Vm.mm
Query Syntax	*IDN?
Return parameter	<string>
Example	*IDN?
	GW INSTEK,AFG-225,SN:XXXXXXXX,Vm.mm

Returns the identification of the function generator.

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			AFG-200 SERIES USER MANUAL
	*RST			System Command
	Description	Reset the function generator to its factory default
		state.
	Note	Note the *RST command will not delete
		instrument save states in memory.
	Syntax	*RST
	SYSTem:VERSion?			System Query
	Description	Performs a system version query. Returns a string
		with the instrument, firmware version, FPGA
		revision
	Query Syntax	SYSTem:VERSion?
	Return parameter	<string>
	Example	SYST:VERS?
		AFG-225 VX.XXX_XXXX

*OPC

Description

Returns the year and version for that year (1).

System Command

This command sets the Operation Complete Bit (bit 0) of the Standard Event Status Register after the function generator has completed all pending operations. For the AFG-200 series, the *OPC command is used to indicate when a sweep or burst has completed.

Note	Before the OPC bit is set, other commands may be
	executed.
Syntax	*OPC

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		AFG-200 SERIES USER MANUAL
	*OPC?		System Query
	Description	Returns the OPC bit to the output buffer when all
		pending operations have completed. I.e. when the
		OPC bit is set.
	Note	Commands cannot be executed until the *OPC?
		query has completed.
	Query Syntax	*OPC?
	Return parameter	1
	Example	*OPC?
		1
		Returns a “1” when all pending operations are
		complete.
	*WAI		System Command
	Description	This command waits until all pending operations
		have completed before executing additional
		commands. I.e., when the OPC bit is set.
	Note	This command is only used for triggered sweep
		and burst modes.
	Syntax	*WAI

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AFG-200 SERIES USER MANUAL

Status Register Commands

*CLS	System Command

Description The *CLS command clears all the event registers, the error queue and cancels an *OPC command.

Syntax *CLS

*ESE	System Command

Description The Standard Event Status Enable command determines which events in the Standard Event Status Event register can set the Event Summary Bit (ESB) of the Status Byte register. Any bit positions set to 1 enable the corresponding event. Any enabled events set bit 5 (ESB) of the Status Byte register.

Note	The *CLS command clears the event register, but
	not the enable register.
Syntax	*ESE <enable value>
Parameter	<enable value>		0~255
Example	*ESE 20
	Sets a bit weight of 20 (bits 2 and 4).
Query Syntax	*ESE?
Return Parameter	Bit	Register	Bit	Register
	0	Not used	4	Message Available
	1	Not used	5	Standard Event
	2	Error Queue	6	Master Summary
	3	Questionable	7	Not used
		Data

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AFG-200 SERIES USER MANUAL

Example	*ESE?
	4
	Bit 2 is set.
*ESR?				System Command
Description	Reads and clears the Standard Event Status
	Register. The bit weight of the standard event
	status register is returned.
Note	The *CLS will also clear the standard event status
	register.
Query Syntax	*ESR?
Return Parameter	Bit	Register	Bit		Register
	0	Operation	4		Execution Error
		Complete
	1	Not Used	5		Command Error
	2	Query Error	6		Not Used
	3	Device Error	7		Power On
Query Example	*ESR?
	5
	Returns the bit weight of the standard event status
	register (bit 0 and 2).
*STB?				System Command
Description	Reads the Status byte condition register.
Note	Bit 6, the master summary bit, is not cleared.
Syntax	*STB?

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