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Promax GF-858C User Manual
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Promax GF-858C User Manual

Promax GF-858C User Manual

Dual-channel arbitrary waveform generator
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GF-858C Dual-Channel
Arbitrary Waveform Generator
User Manual
0 MI2240

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Summary of Contents for Promax GF-858C

  • Page 1 GF-858C Dual-Channel Arbitrary Waveform Generator User Manual 0 MI2240...
  • Page 2 04-25 ii ii...
  • Page 3 Table of Contents 1.General Safety Requirement..............2.Safety Terms and Symbols ..............3.General Inspection ................... 4.Quick Start....................Front Panel Overview..................................6 Rear Panel Overview ..................................7 Power On....................................... 8 User Interface....................................8 5.Panel Operation ..................Channel Setting..................................... 9 Select the channel for configuration............................9 To Display/Edit Both Channels...............................
  • Page 4 6.Communication with PC ................7.Troubleshooting..................8.Specification .................... Waveforms ................................... 53 Frequency Characteristics ..............................53 Amplitude Characteristics ..............................53 Signal Characteristics ................................54 Modulation Characteristics..............................55 Sweep Characteristics ................................. 57 Burst Characteristics ................................57 Counter Specifications ................................. 58 Input/Output Characteristics ..............................58 General Specifications .................................
  • Page 5 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 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 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 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 Both:Display the editable parameters of both channels. Change the currently selected value, also used to select the arbitrary waveform types and arbitrary data file name.
  • Page 9 Turns the output of the CH1 channel on or off. When the output is 13 On/Off button turned on, the backlight of the button lights up. 14 Foot Stool Tilt the signal generator for easy operation. Includes: Sine , Square , Ramp , Pulse 15 Waveform...
  • Page 10 Power On (1) Connect the instrument to an AC power source using the power cord supplied with the accessory. Warning: To prevent electric shock, make sure the instrument is properly grounded. (2) Press the power button on the front panel. The back of the power channel switch will light up, and the buzzer will sound.
  • Page 11 5. Panel Operation Channel Setting Select the channel for configuration Before configuring waveform parameters, you must first select the channel you want to configure. Press CH1/CH2 to switch to the desired channel, and the user interface displays channel information. To Display/Edit Both Channels Press Both button to display the parameters of both channels.
  • Page 12 aveform Setting Sine, square, ramp, pulse, noi se or arbitrary waves can be set and output. Press the waveform selection button on the front panel: sine , square , ramp pulse , noise , arbitrary wave , and enter the corr espo nding w aveform...
  • Page 13 Press a number key on the numeric keypad directly, the screen will pop out the data input box, input the desired value. Press the Corresponding Unit softkeys to select the unit of the parameter,confirm numeric input. Press the Back softkey to cancel the current input parameter value.
  • Page 14 et the Phase Press the Phase softkey, the Phase menu item is highlighted. In Parameter 4 of Figure 5-2, 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 15 ter 5 Figure 5-5: Ramp wave user interface Set the symmetry Press the Symmetry softkey, the Symmetry menu item is highlighted. In Parameter 5 of Figure 5-5, 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 16 Output Channel Load switch Current signal Period High low - level Setting menu of Pulse signal Pulse Parameter 1 Parameter 2 Parameter 3 Parameter 4 Parameter 5 Parameter 6 Parameter 7 Figure 5-7: Pulse wave user interface Set the pulse width Press the Width/Duty softkey to confirm whether the Width menu item is highlighted;...
  • Page 17 Figure 5-8: Set the pulse width Set the rising time Press the Rise softkey, the chosen menu item is highlighted;if not press the Rise softkey again. In Parameter 6 of Figure 5-7, 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 18 Glossary Pulse Width PW is an abbreviation for pulse width and is divided into positive pulse width and negative pulse width. The positive pulse width is the time interval from 50% of the rising edge to 50% of the adjacent falling edge. The negative pulse width is the time interval from 50% of the falling edge to 50% of the adjacent rising edge.
  • Page 19 Output Channel switch Load Current signal Setting menu of High low - level Noise signal Noise Parameter 1 Parameter 2 Figure 5-9: Noise wave user inter face Output Arbitrary Wave Press , the screen displays the user interface of the arbitrary wave. The Arbitrary waveform parameters can be set by operating the Arbitrary setting menu on the right.
  • Page 20 (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 21 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 Igniti on Automobile internal combustion engine ignition waveform...
  • Page 22 Trigonometric func tion 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 23 Hamming ming window Hanning Hanning window Kaiser Kaiser window NuttakkWub The smallest four Blac kman-Harris windows ParzenWin Parzen window TaylorWin Taylaor window Triang Triangle window, also call Fejer window TukeyWin Tukey wind Hamming Hamming window Hanning Hanning window Kaiser Kaiser window NuttakkWub The smallest four Blackman-H arris windows...
  • Page 24 Store Users can L oad custo mized waveform to the device by PC software. Communication wi th PC Install PC s oftware firs t. (You may follow P51 " "). Press , press NextPag e then Store softkey to enter File syste Readi ng waveform (1) Plea...
  • Page 25 (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 26 Generate Sweep (Sweep) In sweep mode, the generator varies its output from the start frequency to the stop frequency w ithin the specified sweep time. Sweep can be generated by Sine, Square, Ramp or Arbitrary wave (except DC). Load Mod Type Sweep time Sweep waveform Sweep type...
  • Page 27 You can also set the frequency boundaries of frequency sweep through center frequency and frequency span. Center Frequency = (Start Frequency + Stop Frequency) / 2 Frequency Span = Stop Frequency – Start Frequency Press the Start Freq/Centre Freq softkey to highlight Centre Freq, note that Freq Span in Stop Freq/Freq Span is also highlighted, input the desired frequencies.
  • Page 28 Load Mod Type Burst time Burst signal Parameter 1 Parameter 2 Figure 5-12: N-Cycle burst user interface 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.
  • Page 29 Period softkey to set the burst period, which is the time from the start of a burst to the start of the next burst. External means using the Sync/Ext Mod/Trig/FSK connector at the rear panel to input the external trigger signal. A burst will be generated once the connector gets a TTL pulse with specified polarity.
  • Page 30 (3) Press the N_Cycle/Gated softkey to hightlight Gated. Press the Polarity softkey to set the gated polarity as Positive (or Negative). The generator outputs burst waveform only when the gated signal is positive (or negative). When the gated signal is true, the generator outputs a continuous waveform;...
  • Page 31 How to set the parameters of AM (1) Press the Mode function key, then press the AM softkey to enter AM 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 32 Load Mod Type Carrier wave Modulating wave Parameter 1 Parameter 2 Parameter 3 Figure 5-15: DSBAM user interface How to set the parameters of DSBAM (1) Press the Mode function key, then press the DSBAM softkey to enter DSBAM user interface.
  • Page 33 Load Mod Type Carrier wave Modulating wave Parameter 1 Parameter 2 Parameter 3 Figure 5-16: FM user interface How to set the parame ters o f FM (1) Press the Mode funct ion key, press NextPage softkey ,and then press the FM softkey to enter FM user interface.
  • Page 34 PM (Phase Modulation) The modulated waveform consists of the carrier wave and the modulating wave. For PM, the phase of the carrier wave varies with the instantaneous voltage of the modulating wave. The PM user interface is shown below. Load Mod Type Modulating wave Carrier wave...
  • Page 35 (7) Set phase deviation: Phase deviation is the deviation of the modulating wave phase relative to the carrier wave phase. Press the Deviation softkey to set the PM phase deviation. The range of phase deviation is from 0° to 180°. PWM (Pulse Width Modulation) The modulated waveform consists of the carrier wave and the modulating wave.
  • Page 36 (5) Select modulating wave s hape: Press the Shape softkey, then press the Sine, Square, Ramp or Noise softkey to select the modulating wave. (6) Set modulating wave frequency: Press the Frequency softkey to set the modulating wave frequency. The range is 2 mHz –...
  • Page 37 (4) Select wave source: Press the Source softkey to select Internal or External as the modulating wave source. If you select Internal, the modulating wave is set as a Square with 50% duty cycle. Press the Rate softkey to set the ASK rate. The rate at which the output amplitude shifts between the carrier amplitude and the modulating amplitude is determined by ASK rate (for internal source only).
  • Page 38 Select wave source: Press the Source softkey to select Internal or External as the modulating wave source. If you select Internal, the modulating wave is set as a Square with 50% duty cycle. Press the Rate softkey to set the PSK rate. The rate at which the output phase shifts between the carrier phase and the modulating phase is determined by PSK rate (for internal source only).
  • Page 39 (4) Select wave source: Press the Source softkey to select Internal or External as the modulating wave source. If you select Internal, the modulating wave is set as a Square with 50% duty cycle. Press the Rate softkey to set the FSK rate. The rate at which the output phase shifts between the carrier phase and the modulating phase is determined by PSK rate (for internal source only).
  • Page 40 wave. Press the correspondin g carrier waveform key to return to the modulation mode interface or press the Mode key to return to the modulation selection mode. Modulating wave source: 3FSK uses internal modulation source, and the modulating wave is set as a Square with 50% duty cycle.
  • Page 41 (4) wave. Press the corresp onding carrier waveform key to return to the modulation mode interface or press the Mode key to return to the modulation selection mode. Modulating wa ve source: 4FSK uses internal modulation source, and the modulating wave is set as a Square with 50% duty cycle.
  • Page 42 wave. Press the corresponding carrier waveform key to return to the modulation mode interface or press the Mode key to return to the modulation selection mode. (4) Set BPSK rate: Press the Rate softkey to set the BPSK rate. The rate at which the output phase shifts between the carrier phase and the modulating phase is determined by BPSK rate (for internal s ource).
  • Page 43 and parameters of the carrier wave. You can change the parameters of the carrier wave. Press the corresponding ca rrier wa veform key to return to the modulation mode interface or press the Mode key to return to the modulation selection mode. (4) Set QPSK rate: Press the Rate softkey to set the QPSK rate.
  • Page 44 (3) Set carrier wave parameters: Press to display the waveform and parameters of the carrier wave. You can change the param eters of the carrier wave. Press the corresponding carrier waveform key to return to the modulation mode interface or press the Mode key to return to the modulation selection mode.
  • Page 45 parameters of the carrier wave. You can change the parameters of the carrier wave Press the corresponding carrier waveform key to return to the modulation mode interface or press the Mode key to return to the modulation selection mode. (4) Select wave source: Press the Source softkey to select the modulating wave source.
  • Page 46 Separator The user can set the separator of the screen display data. (1) Press the front panel Utility function key, press the Display softkey. (2) Press the Separator softkey to toggle between Comma, Space, and Nothing. Comma Space Nothing CH1/2 Settings Load For either of Out1 and Out2 connector at the front panel, the generator has a 50Ω...
  • Page 47 high with respect to the 0V voltage (or DC offset value). When the waveform output is negative, the sync signal is TTL low relative to the 0V voltage (or DC offset value). For arbitrary waveform, the sync signal is a square wave with a varia ble duty cycle.
  • Page 48 User can set t he communication protocol type of the interface through the rear panel USB device. (1) Press the front panel Utility function key. (2) Press the USB Dev softkey to toggle between PC and USB TMC. PC: This is the internal communication protocol. Select this option when connecting to the Waveform Editor software via the USB Device interface.
  • Page 49 Modulation type Modulating Waveform Sine AM Frequency 100.000 0 Hz Modulation Depth 100% Modulation Source Internal Modulating Waveform Sine FM Frequency 100.000 0 Hz Frequency Deviation 100.000 0 Hz Modulation Source Internal Modulating Waveform Sine PM Frequency 100.000 0 Hz Phase Deviation 0°...
  • Page 50 3FSK FSK Rate 100.000 0 Hz Hop Frequency 1 100.000 0 Hz Hop Frequency 2 100.000 0 Hz 4FSK FSK Rate 100.000 0 Hz Hop Frequency 1 100.000 0 Hz Hop Frequency 2 100.000 0 Hz Hop Frequency 3 100.000 0 Hz BPSK Bit Rate 100.000 0 Hz...
  • Page 51 Backlight Screen Saver Screen Saver Time 30 min Thousand Separator Space Synchronization CH1 load High Z CH2 load High Z USB device Language Factory Delivery Setting Beeper Firmwa re Update Use th e rear-panel USB po rt to update you r instrum ent firmware using a USB memory de...
  • Page 52 (3) Pres s the H F Rejection softkey to toggle On or Off high frequency rejection. High-freque rejection can be used to filter high-frequency factors when suring low-f requency signals, improv ing measureme nt accuracy. When suring low frequency signals with a fr equency less th an 1 kHz, turn on high frequency...
  • Page 53 Communication with PC Supports communication with a computer via a US B port. Using the Waveform Editor software installed on the comp uter, the signal generat or can be operated on the compute r to control the output a nd write the file to the signal generator. The instr ument settings ca n be saved as files in internal memory.
  • Page 54 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 th e voltage selector is in the correct gear. Check whether the fuse below the power connector meets the specified ty and rat ing and in good condition (the cover can be pried open with a flat-blade...
  • Page 55 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 generat or is in the calibration internal and has performed a self-calibration.
  • Page 56 DC offset range ±(5 Vpk – Amp litude Vpp/2) 50Ω(≤ 10MHz) (AC +DC) ±(2.5 Vpk – Amplitude Vpp/2) 50Ω(≤ 30MHz) DC offset accuracy ± (1 % of |setting| + 1 mV + amplitude Vpp * 0.5%) Offset resolution 1 mVpp or 4 digits Output Impedance 50Ω...
  • Page 57 Modulation Characteris tics 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 Sine wave, square wave, ramp wave, noise waveform Internal amplitude 2 mHz to 100 kHz...
  • Page 58 Modulated signal Internal or external source Internal modulation Sine wave, square wave, ramp wave,noise waveform Internal phase 2 mHz to 1 M odulation 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 59 BPSK Sine wave, square wave, ramp wave, arbitrary wave(except Carrier Modulated signal Internal source Internal modulation 50% square wave wavefor BPSK rate 2 mHz to 1MHz Phase deviation range 0° ～ 360° Data source 01patt, 10 patt, PN15,PN21 QPSK Carrier Sine wave, square wave, ramp wave,arbitrary wave(except DC) Modulated signal Internal...
  • Page 60 N-cycle trigger sou Internal, external, ma nual 1 μHz ≤ Offset ≤ Maximum frequency of corresponding carrier Carrier frequency N-cycle trigger cycle 34 ns ～ 1 Ms (Min = Cycles * Period) periodicity 1 ～ 60000(Max =B urst Period / Period) / infinite Gated source External trigger Counter Specifications...
  • Page 61 Weight Approx. 0.8 kg Others Adjustment interval The recommended calibration interval is one year Weight Approx. 0.8 kg Others Adjustment interval The recommend ed calibration interval is one year 9. Appendix Appendix A: Ac cessories 1 × power cor d that meets the standards of the country where you are located 1 ×...