TEKTRONIX AFG31000 series arbitrary function generator

(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