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Promax GF-856C User Manual
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Promax GF-856C User Manual

Promax GF-856C User Manual

Single-channel arbitrary waveform generator
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GF-856C Single-Channel
Arbitrary Waveform Generator
User Manual
0 MI2240

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Summary of Contents for Promax GF-856C

  • Page 1 GF-856C Single-Channel Arbitrary Waveform Generator User Manual 0 MI2240...

  • Page 3: Table Of Contents

    Table of Contents 1.General Safety Requirement..............2.Safety Terms and Symbols ..............3.General Inspection ................... 4.Quick Start....................Front Panel Overview..................................8 Rear Panel Overview ..................................9 Power On....................................... 9 User Interface ....................................10 5.Panel Operation ..................Channel Setting ................................... 11 Waveform Setting..................................11 Output Sine Wave ................................
  • Page 4 Frequency Characteristics ..............................52 Amplitude Characteristics ..............................52 Signal Characteristics ................................53 Modulation Characteristics..............................54 Sweep Characteristics ................................. 55 Burst Characteristics ................................57 Counter Specifications ................................. 57 Input/Output Characteristics..............................57 General Specifications ................................. 57 9.Appendix....................Appendix A: Accessories................................58 Appendix B: General Care and Cleaning ............................ 58...

  • Page 5: General Safety Requirement

    1. General Safety Requirement Before any operations, please read the following safety precautions to avoid any possible bodily injury and prevent this product or any other products connected from damage. In order to avoid any contingent danger, this product is only used within the range specified.

  • Page 6: Safety Terms And Symbols

    2. Safety Terms and Symbols Safety Terms Terms in this Manual. The following terms may appear in this manual: Warning: Warning indicates the conditions or practices that could result in injury or loss of life. Caution: Caution indicates the conditions or practices that could result in damage to this product or other property.

  • Page 7: General Inspection

    3. General Inspection After you get a new generator, it is recommended that you should make a check on the instrument according to the following steps: 1. Check whether there is any damage caused by transportation. If it is found that the packaging carton or the foamed plastic protection cushion has suffered serious damage, do not throw it away first till the complete device and its accessories succeed in the electrical and mechanical property tests.

  • Page 8: Quick Start

    4. Quick Start Front Panel Overview Figure 4-1: Front Panel Overview Display the user interface. Menu selection Includes 5 keys to activate the corresponding menu. keys Mode:Output the modulated waveform. Operation keys Change the currently selected value, also used to select the arbitrary waveform types and arbitrary data file name.

  • Page 9: Rear Panel Overview

    Rear Panel Overview Figure 4-2: Rear Panel Overview Handle Used to connect the input or output of a functional Signal connector signal. Used to receive the frequency meter input signal. Counter input AC input connector. AC input connector The place to install the fuse. Fuse Container Tilt the signal generator for easy operation.

  • Page 10: User Interface

    User Interface Figure 4-3: User Interface Display channel switch status. Display load. Current modulation mode. When the instrument detects the USB flash drive, it lights up the indicator. Lights up the indicator when connected to the USB Host via the USB DEVICE interface.

  • Page 11: Panel Operation

    5. Panel Operation Channel Setting Press On/ Off on the front panel to turn on/off the channel output. The channel will light up when it is set to output. Waveform Setting Sine, square, ramp, pulse, noise or arbitrary waves can be set and output. Press the waveform selection button on the front panel: sine , square , ramp...

  • Page 12: Set The Amplitude

    There are two ways to change the selected parameter value: Turn the knob to increase or decrease the value at the cursor. Press the arrow key to move the cursor left or right. Press a number key on the numeric keypad directly, the screen will pop out the data input box, input the desired value.

  • Page 13: Set The Phase

    Set the Phase Press the Phase softkey, the Phase menu item is highlighted. In Parameter 4 of Figure 5-, cursor appears in the parameter value of Phase. Turn the knob to change the value directly, or use the numeric keypad to input the desired value and choose the unit. Output Square Wave Press , the screen displays the user interface of the square wave.

  • Page 14: Set The Symmetry

    Figure 5-4: Ramp wave user interface Set the symmetry Press the Symmetry softkey, the Symmetry menu item is highlighted. In Parameter 5 of Figure 5-, cursor appears in the parameter value of symmetry. Turn the knob to change the value directly, or use the numeric keypad to input the desired value and choose the unit.

  • Page 15: Set The Pulse Width

    Figure 5-6: Pulse wave user interface Set the pulse width Press the Width/Duty softkey to confirm whether the Width menu item is highlighted; if not, press the Width/Duty softkey to switch to Width. In Parameter 5 of Figure 5-,cursor appears in the parameter value. Turn the knob to change the value directly, or use the numeric keypad to input the desired value and choose the unit.

  • Page 16: Set The Falling Time

    Set the falling time Press the Fall softkey, the chosen menu item is highlighted;if not press the Fall softkey again. In Parameter 7 of Figure 5-,cursor appears in the parameter value. Turn the knob to change the value directly, or use the numeric keypad to input the desired value and choose the unit.

  • Page 17: Output Arbitrary Wave

    The noise wave has no frequency and periodic parameters and is Gaussian noise with a bandwidth of 20 MHz. The noise wave menu includes: Amplitude/High Level, Offset/Low Level. To set the Amplitude/High Level, Offset/Low Level, please refer to "Output Sine Wave" Figure 5-8: Noise wave user interface Output Arbitrary Wave Press...
  • Page 18 (2) Press the Built-in softkey to enter the built-in wave menu. (3) Press Common, Medical Treatment, Standard softkeys to select the built-in wave type. Press NextPage softkey to enter the next page, select the built-in wave type: Maths, Trigonometric, Window function. Press NextPage softkey to enter the next page, select the built-in wave type ：...
  • Page 19 Name Description Medical treatment Heart Heart Cardiac Cardiac LFPulse Low frequency pulse electrotherapy waveform Tens1 Neuroelectric stimulation therapy waveform 1 Tens2 Neuroelectric stimulation therapy waveform 2 Tens3 Neuroelectric stimulation therapy waveform 3 Electrooculogram electroencephalogram Pulseilogram Ordinary pulse curve ResSpeed Ordinary expiratory flow rate curve Standard Ignition Automobile internal combustion engine ignition waveform...
  • Page 20 Name Description Trigonometric function CosH Hyperbolic cosine Cotangent function CotH Hyperbolic cotangent CotHCon Concave hyperbolic cotangent CotHPro Raised hyperbolic cotangent CscCon Recessed cosecant Cosecant CscPro Raised cosecant CscH Hyperbolic cosecant CscHCon Depressed hyperbolic cosecant CscHPro Raised hyperbolic cosecant RecipCon Reciprocal of the depression RecipPro Raised countdown SecCon...
  • Page 21 Window function ChebWin Chebyshev window FlattopWin Flat top window Hamming Hamming window Hanning Hanning window Kaiser Kaiser window NuttakkWub The smallest four Blackman-Harris windows ParzenWin Parzen window TaylorWin Taylaor window Triang Triangle window, also call Fejer window TukeyWin Tukey window Engineering Window Butterworth Butterworth filter...

  • Page 22: Store

    Store Users can Load customized waveform to the device by PC software. Install PC software first. (You may follow "Communications with PC"). Press , press NextPage then Store softkey to enter File system. Reading waveform (1) Please visit our official website to obtain the installation package and decompress it. (2) Double click "...

  • Page 23: Generate Sweep (Sweep)

    (3) On the instrument, the screen shows "Any wave has been updated to USERX(X is 0-15)". (4) Press the button ,then press the NextPage button to enter the NextPage menu. (5) Press the Store softkey to enter the file system, and then press the Enter soft key to enter the file system.

  • Page 24: Generate Burst (Burst)

    (3) Press the Linear/Log softkey to switch the sweep type. When Linear is selected, the output frequency of the instrument varies linearly during the sweep. When Log is selected, the output frequency of the instrument varies in a logarithmic fashion during the sweep. (4) Press the Sweep Time softkey to set the sweep time, the time span of the sweep for which the frequency changes from the start frequency to stop frequency.

  • Page 25: Set N-Cycle Burst

    Glossary Burst: The set of pulses transmitted together is called a "burst". The various signal generators are commonly referred to as the BURST function. N cycle burst: Contains a specific number of waveform cycles, each of which is initiated by a trigger event.

  • Page 26: Set Gated Burst

    (4) Press the Cycles/Infinite softkey to highlight Cycles, input the number of cycles, which is the number of waveform cycles to be output for each N-cycle pulse train. The range is from 1 to 60 000. When Infinite is selected, the cycle number of the waveform is set as an infinite value.

  • Page 27: Output The Modulated Waves

    Figure 5-12: Gated burst user interface (1) When the output signal is Sine, Square, Ramp, Pulse or Arbitrary wave (except DC), press the front panel Mode function key ,then press the Burst to enter the burst mode. (2) Press to select the burst waveform. For example, when selecting a sine wave, press to display the burst waveform and parameters, and change the parameters.

  • Page 28: Am (Amplitude Modulation)

    AM (Amplitude Modulation) The modulated waveform consists of the carrier wave and the modulating wave. For AM, the amplitude of the carrier wave varies with the instantaneous voltage of the modulating wave. The AM user interface is shown below. Figure 5-13: AM user interface How to set the parameters of AM (1) Press the Mode function key, then press the AM softkey to enter AM user interface.

  • Page 29: Dsbam (Double-Sideband Am)

    Glossary AM frequency The frequency of the modulating waveform. Modulation Depth The amplitude range of modulating waveform. In 0% modulation, the output amplitude is half of the specified value. In 100% modulation, the output amplitude is equal to the specified value. For an external source, the depth of AM is controlled by the voltage level of the signal connected to the Sync/Ext Mod/Trig/FSK connector at the rear panel.

  • Page 30: Fm (Frequency Modulation)

    (4) Select wave source: Press the Source softkey to select the modulating wave source. If you select External, use the Sync/Ext Mod/Trig/FSK connector at the rear panel to input the external modulating signal, the DSB-AM setting is completed. If you select Internal, continue with the following steps. (5) Select modulating wave shape: Press the Shape softkey, then press the Sine, Square, or Ramp softkey to select the modulating wave.

  • Page 31: Pm (Phase Modulation)

    (4) Select wave source: Press the Source softkey to select the modulating wave source. If you select External, use the Sync/Ext Mod/Trig/FSK connector at the rear panel to input the external modulating signal, then skip ahead to step (7). If you select Internal, continue with the following steps. (5) Select modulating wave shape: Press the Shape softkey, then press the Sine, Square, Ramp, Noise, or Arb softkey to select the modulating wave.

  • Page 32: Pwm (Pulse Width Modulation)

    How to set the parameters of PM (1) Press the Mode function key, press the NextPage softkey,then press the PM softkey to enter PM user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 33: Ask (Amplitude Shift Keying)

    How to set the parameters of PWM (1) Set carrier wave shape: PWM can only be used to modulate pulse, so the carrier wave must be Pulse.Press to set the carrier wave shape. (2) Press the Mode function key, press the NextPage softkey,then press the PWM softkey to enter PWM user interface.

  • Page 34: Psk (Phase Shift Keying)

    Figure 5-18: ASK user interface How to set the parameters of ASK (1) Press the Mode function key, press the NextPage softkey,then press the ASK softkey to enter ASK user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 35: Fsk (Frequency Shift Keying)

    Figure 5-19: PSK user interface How to set the parameters of PSK Press the Mode function key, press the NextPage softkey twice more,then press the PSK softkey to enter PSK user interface. Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 36: 3Fsk (3 Frequency Shift Keying)

    Figure 5-20: FSK user interface How to set the parameters of FSK (1) Press the Mode function key, press the NextPage softkey,then press the FSK softkey to enter FSK user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 37: 4Fsk (4 Frequency Shift Keying)

    Figure 5-21: 3FSK user interface How to set the parameters of 3FSK (1) Press the Mode function key, press the NextPage softkey twice more, then press the 3FSK softkey to enter 3FSK user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 38: Bpsk (Binary Phase Shift Keying)

    Figure 5-22: 4FSK user interface How to set the parameters of 4FSK (1) Press the Mode function key, press the NextPage softkey twice more, then press the 4FSK softkey to enter 4FSK user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 39: Qpsk (Quadrature Phase Shift Keying)

    Figure 5-231: BPSK user interface How to set the parameters of BPSK (1) Press the Mode function key,press the NextPage softkey three more times,then press the BPSK softkey to enter BPSK user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 40: Osk (Oscillation Shift Keying)

    Figure 5-24: QPSK user interface How to set the parameters of QPSK (1) Press the Mode function key,press the NextPage softkey three more times,then press the QPSK softkey to enter QPSK user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC). Press , or to select a desired carrier wave shape.

  • Page 41: Sum (Sum Modulation)

    Load Mod Type Modulating wave Carrier wave Parameter 1 Parameter 2 Figure 5-25: OSK user interface How to set the parameters of OSK (1) Set carrier wave shape: OSK carrier wave can only be sine wave. Press to set the carrier wave shape.

  • Page 42: Utility Function Setting

    Figure 5-26: SUM user interface How to set the parameters of SUM (1) Press the Mode function key,press the NextPage softkey three more times,then press the SUM softkey to enter SUM user interface. (2) Select carrier wave shape: The carrier wave can be Sine, Square, or Ramp. Press , or to select a desired carrier wave shape.

  • Page 43: Brightness Control

    Display Settings Brightness Control (1) Press the front panel Utility function key, press the Display softkey. (2) Press the Backlight softkey to select Backlight. (3) Turn the knob to adjust the value on the current cursor, use the direction key to move cursor left or right, or use the numeric keypad to enter the parameter and then select % as unit.

  • Page 44: Sync

    Warning: The front panel of each output has a fixed 50 Ω series output impedance, no matter how much is the specified value for this parameter, if the actual load is different from the specified value, shows the voltage level and practical level. Sync The generator can output the sync signals of basic waveforms (except noise), arbitrary waveforms (except DC), sweep signal, burst signal, and modulated signal from a single...

  • Page 45: System Settings

    System Settings Language (1) Press the front panel Utility function key, press the System softkey. (2) Press the Language softkey to switch the display language. Beeper When the beeper is turned on, the beeper sounds when users operate the front panel or when an error occurs.
  • Page 46 Output Configuration Factory Setting Channel signal output switch Function Sine Frequency 1.000 000 kHz Amplitude/Offset 1.000 Vpp / 0 mV Basic Waveform Factory Setting Frequency 1.000 000 kHz Period 1.000 000 ms Amplitude 1.000 Vpp Offset 0 mV High Level 500 mV Low Level -500 mV...
  • Page 47 Modulating Waveform Sine PM Frequency 100.000 0 Hz Phase Deviation 0° Modulation Source Internal Modulating Waveform Sine PWM Frequency 100.000 0 Hz Duty Cycle Deviation Modulation Source Internal ASK Rate 100.000 0 Hz Modulating Amplitude 1.000 Vpp Modulation Source Internal PSK Rate 100.000 0 Hz PSK Phase Deviation...
  • Page 48 BPSK Bit Rate 100.000 0 Hz BPSK Phase Deviation 180° Data Source PN15 QPSK Rate 100.000 0 Hz OSK Rate 1.000 000 kHz Oscillate Time 100.000 us Sweep Factory Setting Sweep Time 1.000 000 s Sweep Type Linear Start Frequency 100.000 0 Hz Stop Frequency 1.000 000 kHz...

  • Page 49: Firmware Update

    Firmware Update Use the rear-panel USB port to update your instrument firmware using a USB memory device. Caution: Updating your instrument firmware is a sensitive operation, to prevent damage to the instrument, do not power off the instrument or remove the USB memory device during the update process.

  • Page 50: Communication With Pc

    6. Communication with PC Supports communication with a computer via a USB port. Using the Waveform Editor software installed on the computer, the signal generator can be operated on the computer to control the output and write the file to the signal generator. The instrument settings can be saved as files in internal memory.

  • Page 51: Troubleshooting

    7. Troubleshooting 1. The screen is still black and there is no display after you press the power switch, please follow the steps below: Check whether the power is connected correctly. Check whether the voltage selector is in the correct gear. Check whether the fuse below the power connector meets the specified type and rating and in good condition (the cover can be pried open with a flat-blade screwdriver).

  • Page 52: Specification

    8. Specification All technical specifications are guaranteed when the following conditions are met, unless otherwise stated. The signal generator must be operated continuously for more than 30 minutes at the specified operating temperature (20°C to 30°C) to meet these specifications ； The signal generator is in the calibration internal and has performed a self-calibration.

  • Page 53: Signal Characteristics

    Amplitude Characteristics (not specifically labeled, the load defaults to 50 Ω) ±(10 Vpk–Amplitude Vpp/2) High Z(≤ 10MHz) DC offset range ±(5Vpk - Amplitude Vpp/2) High Z(≤ 30MHz) (AC +DC) ±(5 Vpk – Amplitude Vpp/2) 50Ω(≤ 10MHz) ±(2.5 Vpk – Amplitude Vpp/2) 50Ω(≤ 30MHz) DC offset accuracy ±...

  • Page 54: Modulation Characteristics

    Sampling rate 125 MSa/s Amplitude accuracy 14 bits Modulation Characteristics Modulation Characteristics AM, DSB-AM, FM, PM, ASK, FSK, PSK, BPSK, QPSK, 3FSK, Modulation Type 4FSK, OSK, PWM, SUM Sine wave, square wave, ramp wave, arbitrary wave (except Carrier Modulated signal Internal or external source Internal modulation...
  • Page 55 Carrier Pulse wave Modulated signal Internal or external source Internal modulation Sine wave, square wave, ramp wave,noise waveform Internal phase 2 mHz to 1 MHz modulation frequency Offset 0% to Carrier pulse duty cycle Carrier Sine wave, square wave, ramp wave, arbitrary wave(except DC) Modulated signal Internal or external source...

  • Page 56: Sweep Characteristics

    Internal modulation 50% square wave waveform FSK rate 2 mHz to 1MHz BPSK Carrier Sine wave, square wave, ramp wave, arbitrary wave(except DC) Modulated signal Internal source Internal modulation 50% square wave waveform BPSK rate 2 mHz to 1MHz Phase deviation range 0°～360° Data source 01patt, 10 patt, PN15,PN21 QPSK...

  • Page 57: Burst Characteristics

    Burst Characteristics Burst Characteristics Sine wave, square wave, ramp wave, pulse wave and arbitrary Waveform wave (Except DC) Types N-cycle,Gated N-cycle trigger source Internal, external, manual Carrier frequency 1 μHz ≤ Offset ≤ Maximum frequency of corresponding carrier /2 N-cycle trigger cycle 67 ns ～...

  • Page 58: Appendix

    Less than 35°C: ≤ 90% relative humidity Relative humidity 35°C to 40°C: ≤ 60% relative humidity Operating 3,000 meters Height Non-operation 12,000 meters Mechanical Specification Dimension 200mm (Length) × 92 mm (Height) × 145mm (Width) Weight Approx. 0.8 kg Others Adjustment interval The recommended calibration interval is one year 9.