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Summary of Contents for GW Instek SFG-1000 Series
- Page 1 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Synthesized Function Generator SFG-1000 Series USER MANUAL GW INSTEK PART NO. 82FG-10030MA1 Ii!!! ST EK 1sO-900, CERTIFIED MANUFACTURER...
- Page 2 This manual contains proprietary information, which is protected by copyrights. 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 company. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.
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Page 3: Table Of Contents
Table of Contents Table of Contents SAFETY INSTRUCTIONS ............5 Safety Symbols ............5 Safety Guidelines ........... 5 GETTING STARTED ............8 Technical background ..........9 Lineup/Features ............11 Front Panel ............12 Rear Panel.............15 Set Up..............16 Operation Shortcuts ..........18 SINE/SQUARE/TRIANGLE WAVE ........19 Activate waveform ..........20 Set Frequency............20 Set Amplitude ............22 Set Duty Cycle (Square Waveform)......23... - Page 4 SFG-1000 Series User Manual Logic Circuit Test ..........32 Impedance Matching Network Test ....... 32 Speaker Driver Test..........33 FAQ ................. 34 APPENDIX ............... 35 Fuse Replacement ..........35 Specification ............37 Declaration of Conformity........39 INDEX ................40...
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Page 5: Safety Instructions
SFG-1000 series. Safety Symbols These safety symbols may appear in this manual or on SFG-1000 series. Warning: Identifies conditions or practices that could result in injury or loss of life. - Page 7 Temperature: −10°C to 70°C • Power cord for the United Kingdom When using SFG-1000 series in the United Kingdom, make sure the power cord meets the following safety instructions. NOTE: This lead / appliance must only be wired by competent persons...
- Page 8 SFG-1000 Series User Manual ETTING STARTED This chapter describes SFG-1000 series in a nutshell, including main features and front/rear/display introduction. Follow the Set Up section to properly install and power up SFG-1000 series. Technical background ..........9 SFG-1000 series overview Series lineup ............11 Main features ............
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Page 9: Getting Started
Getting Started Technical background SFG-1000 series uses the latest Direct Digital Synthesis Traditional (DDS) technology to generate stable, high resolution function output frequency. The DDS technology solves several generators problems encountered in traditional function generators, as follows. Constant current circuit methodology... - Page 10 SFG-1000 Series User Manual DDS synthesizer consists of Phase accumulator Block diagram (counter), lookout table data (ROM), Digital-to-analog converter (DAC), and Low-pass filter (LPF). Frequency Control Word (K) 28bit 28bit Phase Accumulator 28bit System Clock Register (fs) Table ROM/RAM 12bit...
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Page 11: Lineup/Features
Getting Started Lineup/Features Series lineup −40dB Features Frequency Offset Voltage Lineup output attn. display 3MHz ● ● ● ― SFG-1003 3MHz ● ● ● ● SFG-1013 Main features High resolution using DDS technology Performance • High frequency accuracy: ±20ppm • Low distortion: −55dBc @ ≤200kHz •... -
Page 12: Front Panel
SFG-1000 Series User Manual Front Panel Main Display Shows frequency and voltage. 7 segment LED Indicates that the TTL output is TTL indicator enabled. For details, see page25. Indicates the waveform shape: Waveform Sine, Square, and Triangle. indicator Indicates the output frequency: Frequency MHz, kHz, or Hz. -
Page 13: Entry Keys
Getting Started Entry keys Selects the waveform: sine, Waveform key WAVE square, and triangle. For details, see page20. Activates TTL output. For details, TTL activation see page25. SHIFT WAVE Specifies frequency. Numerical keys Specifies the frequency unit: Frequency unit MHz, kHz, or Hz. SHIFT selection Moves the cursor (frequency... -
Page 14: Others
SFG-1000 Series User Manual Others Increases (right turn) or decreases (left Frequency turn) the frequency. editing knob Outputs sine, square, and triangle Main output OUTPUT waveform. BNC, 50Ω output impedance. Ω For details, see page20. Outputs TTL output waveform, BNC TTL output terminal. -
Page 16: Set Up
SFG-1000 Series User Manual Set Up Pull out the Tilt stand handle sideways and rotate it. Place SFG horizontally, Or tilt stand. Place the handle vertically for hand carry. -
Page 17: Power Up
Getting Started 1. Check the voltage Power up level displayed on the label(1) and make sure it is identical to the AC line. Then connect the power cord(2). 2. Push and turn On the main power switch on the front panel. 3. -
Page 18: Operation Shortcuts
SFG-1000 Series User Manual Operation Shortcuts 1. Press Wave key and Sine wave WAVE select Sine 250Hz, −40dB 2. Press 2 + 5 + 0 + Shift amplitude + 0(Hz) key SHIFT OUTPUT Ω 3. (SFG-1003) Press AMPL Output key, then pull Amplitude knob 三... -
Page 19: Sine/Square/Triangle Wave
Sine/Square/Triangle Wave INE/SQUARE/TRIANGLE WAVE Activate waveform ..........20 Select waveform Enter frequency ............ 20 Set frequency Edit frequency ............. 21 Maximum frequency limit error ......21 Minimum frequency limit error......22 Set Amplitude ............22 Set amplitude View amplitude (SFG-1013) ........22 Attenuate by −40dB .......... -
Page 20: Activate Waveform
SFG-1000 Series User Manual Activate waveform 1. Press the wave key repeatedly. The Sine / Square WAVE corresponding indicator appears on / Triangle the display. Sine waveform Square waveform Triangle waveform 2. Press the output key. The LED turns On. -
Page 21: Edit Frequency
Sine/Square/Triangle Wave Left cursor key moves the active Edit cursor left. SHIFT frequency Right cursor key moves the active cursor right. SHIFT Turn the Frequency knob left to decrease the frequency. Turn the frequency knob right to increase the frequency. For full error message list, see page37. -
Page 22: Set Amplitude
SFG-1000 Series User Manual For full error message list, see page37. Minimum frequency The minimum frequency is 0.1Hz. When the frequency limit error input becomes less than 0.1Hz, an error message (Err-4) appears and forces the frequency to 0.1Hz. Set Amplitude Amplitude setting does not apply to TTL output (page25). -
Page 23: Set Duty Cycle (Square Waveform)
Sine/Square/Triangle Wave Press the Shift key, then 3 SFG-1013 (−40dB). The main output is SHIFT attenuated by −40dB, and the −40dB display indicator in the display turns On. Set Duty Cycle (Square Waveform) The duty cycle setting is not available in sine/triangle waveform. DUTY Pull out the Duty knob. -
Page 24: Limitation
SFG-1000 Series User Manual Note that the output amplitude, including the offset, is Limitation still limited to: −5 ~ +5V (50Ω load) −10 ~ +10V (no load) Therefore excessive offset leads to peak clip as below. Clipped Positive peak clip (50Ω) -
Page 25: Ttl Output
TTL Output TL OUTPUT Activate TTL ............25 Activate TTL Enter frequency ............ 26 Set frequency Edit frequency ............26 Maximum frequency limit error ......27 Minimum frequency limit error......27 Enter duty cycle ............ 27 Set duty cycle Activate TTL 1. -
Page 26: Set Frequency
SFG-1000 Series User Manual Set Frequency Enter the waveform frequency using the numerical keys. Enter frequency 1.2MHz SHIFT 37kHz SHIFT 45Hz SHIFT Left cursor key moves the active Edit cursor left. SHIFT frequency Right cursor key moves the active cursor right. -
Page 27: Set Duty Cycle
TTL Output For full error message list, see page37. Maximum frequency TTL frequency is limited to maximum 3MHz. When the limit error input exceeds it, an error message (Err-1) appears and forces the frequency to 3MHz. For full error message list, see page37. Minimum frequency The minimum frequency is... -
Page 28: Application Examples
SFG-1000 Series User Manual PPLICATION EXAMPLES Reference Signal for PLL System The SFG output can be used as a cost-effective reference Description signal for Phase-Locked-Loop system. Directly connect SFG output to PLL input. SFG series Block diagram Reference In Output... -
Page 29: Transistor Dc Bias Characteristics Test
Application Examples Transistor DC Bias Characteristics Test Use SFG-1000 series as the signal source for a transistor. Description Compare the transistor input/output waveform using the oscilloscope. Adjust the DC voltage source to find out the maximum output without distorting the waveform. -
Page 30: Amplifier Over-Load Characteristic Test
SFG-1000 Series User Manual Amplifier Over-Load Characteristic Test Use the triangle wave output from SFG-1000 series to Description check the amplifier output distortion caused by overload. The common sine wave is not the ideal source in this case. Observe the linearity of the triangle waveform using an oscilloscope. - Page 31 Application Examples 1. Apply a triangle waveform to the amplifier first. Test step Adjust the waveform amplitude to make sure there is no clipping. 2. Switch to square waveform and adjust its frequency to the middle of the amplifier pass band, such as 20Hz, 1kHz, and 10kHz.
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Page 32: Logic Circuit Test
SFG-1000 Series User Manual Logic Circuit Test Use the TTL output from SFG-1000 series to test digital Description circuits. Observe the timing relation of input/output waveform using an oscilloscope. Block diagram Impedance Matching Network Test Use SFG-1000 series for impedance matching network:... -
Page 33: Speaker Driver Test
Application Examples Speaker Driver Test Use SFG-1000 series for testing the frequency Description characteristics of audio speakers. Record the volt reading versus the input signal frequency. Oscilloscope (or Voltmeter) Block diagram SFG series Speaker The peak voltage occurs on the resonant frequency of Graph the speaker. -
Page 34: Faq
SFG-1000 Series User Manual ● I pressed the Power switch on the front panel but nothing happens. ● How can I get out of TTL/−40dB mode? ● The device accuracy does not match the specification. ● What are these error messages? I pressed the Power switch on the front panel but nothing happens. -
Page 35: Appendix
Appendix PPENDIX Fuse Replacement In order to detach the handle from the unit, turn the 1. Take off handle down 90 degrees, then pull it off sideways. the Handle Take off the two metal holdings from the handle joint. 2. Take off Then take the top screw off from the rear panel. -
Page 37: Specification
Appendix Error Messages Frequency error Sine, square, and TTL wave frequency over Err-1 range. This message appears when entering sine / square / TTL waveform frequency larger than 3MHz. The frequency is automatically forced to 3MHz. Triangle wave Frequency over range. This Err-2 message appears when entering triangle waveform frequency larger than 1MHz. -
Page 39: Declaration Of Conformity
Appendix Declaration of Conformity GOOD WILL INSTRUMENT CO., LTD. (1) No.7-1, Jhongsing Rd., Tucheng City, Taipei County, Taiwan (2) No. 69, Lu San Road, Suzhou City (Xin Qu), Jiangsu Sheng, China declare, that the below mentioned product Type of Product: Synthesized Function Generator Model Number: SFG-1003, SFG-1013 are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States... -
Page 40: Index
SFG-1000 Series User Manual INDEX summary ..........37 40dB attenuation faq ............34 FAQ ............34 step............22 feature list..........11 frequency editing sine/square/triangle ......20 amplifier application example....30 TTL ............26 frequency faq ..........34 front panel key overview ......13 caution symbol ..........5 fuse cleaning............ - Page 41 Appendix operation shortcut ........18 storage environment safety instruction........7 specification .......... 38 peak clip ............24 PLL example application ......28 power supply table of contents .......... 3 safety instruction ........6 tilt stand ............ 16 power up sequence ........17 transistor application example ....29 faq ............34 triangle wave example setting ........
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