TEKTRONIX AFG31000 series arbitrary function generator



TEKTRONIX AFG31000 series arbitrary function generator

Product model and core parameters

1. Comparison Table of Model Parameters

Model, bandwidth, sampling rate, number of channels, standard memory, optional memory, pulse generator, bandwidth

AFG31021 25MHz 250MS/s 1 16MS/CH 128MS/CH 20MHz

AFG31022 25MHz 250MS/s 2 16MS/CH 128MS/CH 20MHz

AFG31051 50MHz 1GS/s 1 16MS/CH 128MS/CH 40MHz

AFG31052 50MHz 1GS/s 2 16MS/CH 128MS/CH 40MHz

AFG31101 100MHz 1GS/s 1 16MS/CH 128MS/CH 80MHz

AFG31102 100MHz 1GS/s 2 16MS/CH 128MS/CH 80MHz

AFG31151 150MHz 2GS/s 1 16MS/CH 128MS/CH 120MHz

AFG31152 150MHz 2GS/s 2 16MS/CH 128MS/CH 120MHz

AFG31251 250MHz 2GS/s 1 16MS/CH 128MS/CH 160MHz

AFG31252 250MHz 2GS/s 2 16MS/CH 128MS/CH 160MHz

2. General technical characteristics

Vertical resolution: 14 bits, ensuring waveform accuracy.

Output impedance: default 50 Ω, can be set to 1 Ω~10k Ω (resolution 1 Ω) or Infinity (>10k Ω).

Modulation types: Supports AM (amplitude modulation), FM (frequency modulation), PM (phase modulation), FSK (frequency shift keying), PWM (pulse width modulation).

Environmental adaptability: working temperature of 0 ℃~40 ℃, humidity of 5%~85% RH, working altitude of 3000m.

Safety regulations and operating taboos

1. Core security principles

Only for professional operation: Only personnel with high voltage/high frequency testing qualifications are allowed to operate, and non professionals are prohibited from contacting.

System level security: If connecting to a large system, it is necessary to comply with the security manuals of other components of the system.

Preoperative examination: Before use, verify that the device is functioning properly with a known signal source and prohibit its use for detecting dangerous voltages.

2. Key operations for preventing electric shock and fire prevention

(1) Power supply and grounding

Use designated power cords (must comply with local certification), and do not mix power cords from other devices.

The equipment is grounded through the power cord, and the grounding conductor must be connected to the ground. It is forbidden to disconnect the grounding connection.

Confirm that the power supply voltage matches the rated value of the equipment (such as 100V~240V AC) before powering on.

(2) Connection/disconnection sequence

Operation type, step purpose

Connect circuit 1. Connect the probe output to the measuring instrument → 2 Connect the probe reference terminal to the tested circuit → 3 Connect the probe input to avoid electric shock or equipment damage caused by live plugging and unplugging

Disconnect circuit 1. Disconnect probe input and reference terminal → 2 Disconnect the probe from the instrument to prevent residual voltage shock

(3) Taboos on Environment and Equipment Status

Do not use in damp, explosive, and dusty environments, and do not operate without cover plates/panels (exposing high-voltage circuits).

If the equipment falls, gets wet, or is suspected of damage, authorized personnel must inspect it before use, and it is prohibited to disassemble it by oneself.

Do not touch the exposed circuit when powered on, and keep the probe body and output line away from the tested circuit.

Remote control interface and instruction system

1. Interface configuration

(1) GPIB interface

Requirements:

Each device must have a unique address (1-30) and must not be duplicated;

The bus can connect up to 15 devices, with a total cable length of ≤ 20m and at least 1 device per 2m;

Power on devices account for ≥ 67%, support star/linear topology, and prohibit parallel/ring topology.

Address setting: Enter the address through the panel "Utility → I/O Interface → GPIB Address" (* RST command cannot initialize the address).

(2) VISA interface

TekVISA software (official website download) needs to be installed, supporting GPIB, RS-232, Ethernet remote control, and complying with VISA 2.2 standard.

Applicable development environment: Windows system, supporting ADE (Application Development Environment) such as LabVIEW and VB.

2. Instruction system and syntax

(1) Instruction classification

Example Function of Instruction Type

IEEE 488.2 General Command * CAL? 、 *CLS, * RST self calibration, clear register, reset

SCPI command SOURce1: FUNCTION SIN, OUTPut1: STATe ON. Set the waveform of channel 1 to sine and enable the output of channel 1

(2) Core Grammar Rules

Abbreviation: Commands can be abbreviated (uppercase is required, lowercase can be omitted), such as DISPlay: BRIGhtness can be abbreviated as DISP: BRIG.

Chain command: Multiple commands are separated by semicolons, and prefixes can be omitted for the same root node, such as TRIGger: CLOPe POS; SOURce SIN (assuming the trigger slope is positive and the source waveform is sine).

SI units: support voltage (V/mV), frequency (Hz/kHz/MHz), time (s/ms/μ s/ns), etc., such as Frequency 10MHz (assuming frequency 10MHz).

Parameter type: Supports Boolean values (ON/OFF), numerical values (NR1/NR2/NR3), and strings (quotation marks required), such as MMEMory: DELete "U:/TEST. TFWX" (remove the TEST. TFWX file from USB).

Detailed explanation of core functions and instructions

1. Waveform generation and output control

(1) Waveform type and parameter settings

Supporting waveforms: 13 types including sine (SINusoid), square wave (SQUare), pulse (PULSe), ramp (RAMP), noise (PRNoise), arbitrary wave (EMEMory/EFILe), etc.

Example of Key Instructions:

Let the waveform of channel 1 be sine: SOURce1: FUNCTION SIN

Assuming a frequency of 10kHz: SURce1: Frequency 10kHz

Set amplitude to 2Vpp: SURce1: VOLTage: Amplitude 2VPP

Set offset 1V: SURce1: VOLTage: OFFSet 1V

(2) Output control

Turn on/off output: OUTPut1: STATe ON/OFF

Output polarity reversal: OUTPut1: Polarity Inverted (default NORMAL)

Output impedance setting: OUTPut1: Impedance 50OHM (default 50 Ω, can be set to 1 Ω~10k Ω)

2. Modulation function (AM/FM/PM, etc.)

Taking AM (amplitude modulation) as an example, the key instructions are as follows:

Example of functional instructions

Set modulation depth SOURce1: AM: DEPTh SOURce1: AM: DEPTh 50PCT (50% depth)

Set the internal modulation frequency SOURce1: AM: INTernal: FREQuency SOURce1: AM: INTernal: FREQuency 1kHz

Set modulation source SOURce1: AM: SOURce1: AM: SOURce INTernal (internal source)

Turn on AM SOURce1: AM: STATe SOURce1: AM: STATe ON

3. Sequence control (advanced mode)

Support defining 256 sequence elements to achieve waveform looping, jumping, and waiting for triggering. Core instructions:

New sequence: SEQueen: NEW

Set sequence length (10 elements): SEQuence: LENGth 10

Let element 1 loop 100 times: SEQuence: ELEM1: LOOP: COUNT 100

After triggering element 1, jump to element 6: SEQuence: ELEM1: GOTO: INDex 6; GOTO:STATe ON

Running sequence: SEQControl: RUN: IMMediate

4. Data storage and management

(1) Virtual Disk Definition

Disk identification, storage location, permission usage

U: USB flash storage for reading and writing user waveforms/settings files

M: Internal flash read-write storage commonly used waveforms/settings

P: Internal predefined area read-only storage factory preset waveforms (such as sine and square waves)

(2) Store/load instructions

Save channel 1 waveform to USB: MMEMory: STORe: TRACe EMEMory1, "U:/WAVE1. TFWX"

Loading settings from USB to memory 1: MMEMory: LOAD: STATe 1, "U:/SET1. TFS"

Delete USB file: MMEMory: DELete "U:/OLD. TFWX"

Status and Event Management

1. Status register system

Compliant with IEEE 488.2 and SCPI standards, the core registers are as follows:

Meaning of register name function key bits

Status Byte Register (SBR) summarizes device status OSB (operational status), ESB (event status), MAV (message available)

The Standard Event Status Register (SESR) records core events OPC (operation completed), CME (command error), EXE (execution error)

The operating condition register (OCR) records the operating status CAL (calibration in progress), SWE (scanning in progress), WTRIG (waiting for trigger)

2. Error code system

Error codes are divided into "standard errors" (-100~-499) and "device specific errors" (1~32767). Common examples include:

Error code type description

-100 command errors command syntax errors (such as spelling errors)

-222 execution error parameter out of range (e.g. frequency set to 1000MHz, exceeding the upper limit of 250MHz)

-350 device error error queue overflow (more than 64 events)

1101 calibration error CH1 internal offset calibration failed

2305 self-test error CH1 output gain self-test failed

3. Error query

Search for the next error: SYSTem: ERRor: NEXT? The return format is -222, "Data out of range"

Maintenance and troubleshooting

1. Maintain standards

Cleaning: Wipe the outer surface with a dry lint free cloth or 75% isopropanol. Do not use water/solvents/abrasives, and do not allow moisture to enter the interior of the equipment.

Repair restriction: There are no user repairable parts, and only DC offset can be adjusted for serial numbers C019999 and below. Other faults need to be returned to the factory.

2. Common fault handling

Troubleshooting steps for possible causes of fault phenomena

No waveform output turned on, parameter out of range 1. Execute OUTPut1: STATe? Confirm the output status; 2. Check if the frequency/amplitude is within the device range

GPIB no response address conflict, cable fault 1. Confirm that GPIB address is unique; 2. Replace GPIB cable; 3. Restart the device and controller

Calibration failed due to excessive temperature and humidity in the environment, hardware malfunction. 1. Confirm that the environment is 0 ℃~40 ℃/5%~85% RH. 2. Execute DIAGnostic? Self inspection; 3. If errors 1101-1216 are reported, return to the factory for repair