JS-VISG-M-S电压电流信号发生器使用手册_V1

信号发生器本人介绍一下信号发生器的使用和操作步骤.1、信号发生器参数性能频率范围：0.2Hz ~2MHz粗调、微调旋钮正弦波, 三角波, 方波, TTL 脉波0.5" 大型 LED 显示器可调 DC offset 电位输出过载保护信号发生器/信号源的技术指标:波形正弦波, 三角波, 方波, Ramp 与脉波输出振幅>20Vp-p (open circuit)； >10Vp-p (加 50Ω负载) 阻抗50Ω+10%衰减器-20dB+1.0dB (at 1kHz)DC 飘移<-10V ~ >+10V, (<-5V ~ >+5V 加 50Ω负载)周期控制 1 : 1 to 10 : 1 continuously rating显示幕4位LED显示幕频率范围0.2Hz to2MHz(共 7 档)频率控制Separate coarse and fine tuning失真< 1% 0.2Hz ~ 20kHz , < 2% 20kHz ~ 200kHz频率响应< 0.2dB 0.2Hz ~100kHz； < 1dB100kHz~2MHz线性98% 0.2Hz ~100kHz； 95%100kHz~2MHz对称性<2% 0.2Hz ~100kHz上升/下降时间<120nS位准4Vp-p±1Vp-p ~ 14.5Vp-p±0.5Vp-p 可调上升/下降时间<120nS位准>3Vpp上升/下降时间<30nS输入电压约 0V~10V ±1V input for 10 : 1 frequency ratio输入阻抗10kΩ (±10%)交流 100V/120V/220V/230V ±10%, 50/60Hz电源线× 1, 操作手册× 1, 测试线 GTL-101 × 1230(宽) × 95(高) × 280(长) mm,约 2.1 公斤信号发生器是为进行电子测量提供满足一定技术要求电信号的仪器设备。

信号发生器简易使用手册一、概述信号发生器主要的功能是在手机测试时提供符合要求的信号，因此我们在使用前要先了解信号发生器的一些基本的性能指标（如所能产生的信号频率范围、幅值范围等），选择符合我们要求的仪器来进行测试。

信号的频率范围一般都会标在仪器的前面板上，使用前应多加留意。

下面我们就以Agilent E4438C ESG V ector Signal Generator为例来说明信号发生器的基本使用方法。

二、基本项设置和功能1、显示屏显示当前功能的信息。

信息包括状态指示，频率和幅值设置，错误消息。

软键的标注位于显示屏的右手边。

2、软键软键激活显示屏上对应的每个键的功能。

3、频率设置键按这个键可以设置有关频率的功能。

例如改变RF输出频率或使用菜单设置频率的属性如参考频率和频率偏差等。

4、幅值设置键按这个键可以设置有关幅值的功能。

例如改变RF输出幅值或使用菜单设置幅值的属性如功率搜索，用户平面和电平模式等。

5、旋纽旋转这个旋纽可以增加或减少数值或改变高亮数字或性能。

也可以使用它来列表中单步移动或在一行中选择项目。

6、菜单键这些键可以通过软键设置列表扫描和单步扫描，有用功能，LF输出和各种调制类型等。

7、保存键通过这个键可以将数据保存到仪器状态寄存器中。

仪器状态寄存器分为10个序列（0～9），每个序列包括100个寄存器（00～99）。

保存键允许保存和重现频率和幅值设置。

一当仪器状态被保存了，所有的频率，幅值和调制设置可以通过Recall键重现。

8、重现键重现先前保存在寄存器里的仪器状态。

9、外部输入连接端口1这个BNC（同轴电缆接插件）输入连接端口接受AM，FM和√M ±1 V p的信号。

对于所有的调制方式，±1 V p 形成指示的偏移或深度。

当为AM，FM或√M选择ac_coupled输入，峰值输入电压偏离1 V p 3％时，显示屏上的HI/LO指示高亮。

破坏电压是5V rms和10V p。

信号发生器工程案例使用说明书V1.0 － 2009.3文档版本 1.0.0文档日期2009年3月第1章概述1.1 案例概述信号发生器工程案例参照“2007年全国大学生电子设计竞赛”高职高专组“信号发生器（H题）”要求设计而成。

根据H题要求，需设计并制作一台信号发生器，使之能产生正弦波、方波和三角波信号，且输出可调。

本工程案例提供的软、硬件设计方案能够完全满足比赛题目中所提到的各项要求。

不仅可作为日常工程训练，还为以后类似比赛题目提供借鉴。

根据设计要求，本案例选用EDA比赛套件中：EDA-SOPC核心板、LCD1602、RS232&PS2及DDS_BOARD四个模块。

电源采用5V直流电源及±5V电源供电。

各模块连接如下图所示：图1.1 各模块连接示意图各模块功能如下：一、由EDA-SOPC核心板提供的FPAG及SDRAM为本系统的核心器件。

主要完成功能：1、采用DDS技术基于FPGA设计信号发生模块，产生要求的信号序列；2、利用SDRAM配合FPGA构成片上系统，建立NIOS控制系统，完成任务调度及人机交互控制。

核心板分别通过相关接口与其它三个功能模块相连。

二、RS232&PS2模块通过8-PIN双排线与核心板的PORT2CP接口相连。

将PS2接口的数字小键盘连接到该模块的PS/2接口上，实现按键输入功能。

三、LCD1602模块通过16-PIN双排线与核心板的PORT12-LCD接口相连。

将液晶LCD1602连接到该模块的液晶接口上，实现人机交互的显示功能。

四、DDS模块分别通过14-PIN双排线与核心板的PORT14-DA接口相连及通过16-PIN双排线与核心板的PORT16-IO接口相连。

该模块实现两路D/A，其中一路产生信号，另一路实现信号幅度的调整，模块的BNC 接头直接输出信号。

注：相关模块的详细功能，可参考该模块说明书。

1.2配件清单EDA-SOPC核心板 1块LCD1602模块 1块RS232&PS2模块 1块DDS_BOARD模块 1块LCD1602液晶 1块PS2接口的数字小键盘 1个5V电源 1个8针接口线 1根14针接口线 1根16针接口线 2根说明书及相关资料 1份快速上手3.1 电路连接按图1.1示意图，将各模块通过双排线连接好。

Function GeneratorModel : GFG-3015Operation Manual82FG-30150MBiTable of ContentsPage1. Precautions......................................................................................................................... 2 2. Product Introduction.......................................................................................................... 5 3. Features .............................................................................................................................. 6 4. Specifications ..................................................................................................................... 7 5. Front and Rear Panels ..................................................................................................... 10 6. Operation .......................................................................................................................... 18 6.1 The First Step Setup For Instrument .................................................................... 18 6.2 The Setup of Output Function............................................................................... 18 6.3 The Setup of Frequency......................................................................................... 18 6.4 The Setup of Amplitude ......................................................................................... 19 6.5 The Setup of Offset ................................................................................................ 19 6.6 The Setup of Duty................................................................................................... 20 6.7 The Setting of STORE ............................................................................................ 20 6.8 The Setting of RECALL .......................................................................................... 20 6.9 The SHIFT Key and Function Keys ....................................................................... 21 6.10 Setup of LIN or LOG Sweep................................................................................. 21 6.11 Setup of AM Modulation ...................................................................................... 25 6.12 Setup of FM Modulation....................................................................................... 26 6.13 Setup of Trigger.................................................................................................... 28 6.14 Setup of GATE and BURST ................................................................................. 30 6.15 Setup of External Counter ................................................................................... 32 6.16 THE VCF Function ................................................................................................ 34 6.17 THE GCV Output Function................................................................................... 35 6.18 THE TTL Signal Output Function ........................................................................ 36 6.19 THE SYNC Signal Output Function..................................................................... 36 6.20 Remote Control - RS232 Interface ...................................................................... 36 6.21 Commands Syntax ............................................................................................... 38 6.22 The Commands of RS-232 Serial Interface ........................................................ 41 6.23 The Examples of the Communication Interface Software ................................ 44 6.24 The Error message of instrument ....................................................................... 47 7. Adjustment and Correction ............................................................................................. 48 7.1 Preparation.............................................................................................................. 48 7.2 Adjust and Check up the operation DC Voltage.................................................. 48 7.3 Adjusting Main Clock ............................................................................................. 49 7.4 Adjusting Sensitivity of counter ........................................................................... 49 7.5 Adjusting VCF Function 100:1 .............................................................................. 49 7.6 Adjusting Main Frequency , Duty Cycle and GCV Output Check ...................... 49 7.7 Adjusting Rise/Fall Time........................................................................................ 50 7.8 Adjusting Main Sine wave Harmonic Distortion.................................................. 50 7.9 Adjusting Modulation source ................................................................................ 50 7.9.1 Adjusting Rate and symmetry............................................................................ 50 7.9.2 Adjusting Sine wave Harmonic Distortion ........................................................ 51 7.10 Adjusting AM modulation .................................................................................... 51 7.11 Adjusting FM and Sweep Function..................................................................... 53 7.12 Adjusting Trigger Phase ...................................................................................... 55 7.13 Calibrating by Software ....................................................................................... 56 8. The Block Diagram and Description of the System ...................................................... 62iiEC Declaration of ConformityWeGOOD WILL INSTRUMENT CO., LTD.No. 7-1, Jhongsing Rd, Tucheng City,Taipei County 236, TaiwanGOOD WILL INSTRUMENT (SUZHOU) CO., LTD.No. 69, Lushan Road, Suzhou New District Jiangsu, Chinadeclares that the below mentioned productGFG-3015is herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility (89/336/EEC, 92/31/EEC, 93/68/EEC) and Low Voltage Equipment Directive (73/23/EEC, 93/68/EEC). For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Equipment Directive, the following standards were applied:◎ EMC EN 61326-1: Electrical equipment for measurement, control and laboratory use –– EMCrequirements (1997+A1: 1998+A2: 2001) Conducted and Radiated Emissions Electrostatic Discharge EN 55011: 1998 class A EN 61000-4-2: 1995+A1:1998 Current Harmonic Radiated Immunity EN 61000-3-2: 2000 EN 61000-4-3: 1996+A1:1998 Voltage Fluctuation Electrical Fast Transients EN 61000-3-3: 1995 EN 61000-4-4: 1995 Surge Immunity ------------------------EN 61000-4-5: 1995 Conducted Susceptibility ------------------------EN 61000-4-6: 1996 Power Frequency Magnetic Field ------------------------EN 61000-4-8 : 1993 Voltage Dips/ Interrupts ------------------------EN 61000-4-11: 1994◎ SafetyLow Voltage Equipment Directive 73/23/EEC & amended by 93/68/EECSafety Requirements IEC/EN 61010-1: 2001GFG-3015p.11. PrecautionsGFG-3015 is specially designed for safety operation. It has passed through rigorous tests of inclement environment to ensure its reliability and good condition. The following precautions are recommended to insure your safety and keep the best condition of the equipment. (1) Safety Terms and Symbols The following terms and symbols may appear in this manual:! !This statement identifies conditions or practices that could result in injury or loss of life. This statement identifies conditions or practices that could CAUTION result in damage to this product or other properties. WARNINGThe following terms and symbols may appear on the product: This term indicates an immediately accessible injury hazard. DANGER This term indicates that an injury hazard may occur, but is WARNING not immediately accessible. This term indicates potential damage to this product or other CAUTION properties.!DANGER High voltage Protective Conductor Terminal ATTENTION refer to manual Double Insulated DANGER Hot surface Earth Ground Terminal(2) Do not place any heavy objects on the instrument under any circumstances.(3) Disassembling the instrument Due to the precision of this instrument, all the procedures of disassembling, adjusting, and maintenance should be performed by a professional technician. If the instrument has to be opened or adjusted under some unavoidable conditions, and to be managed by a technician who is familiar with GFG-3015. Once there is any abnormality, please contact our company or our distributor near you. (4) Power Supply AC input should be within the range of line voltage±15%, 50/60Hz. To prevent the instrument from burning up, be sure to check the line voltage before turning on power.p. 2GFG-3015(5) Grounding!WARNINGTo avoid electrical shock, the power cord protective grounding conductor must be connected to ground.GFG-3015 can be operated only with an earth grounded AC power cord that connects the case and ground well. This is to protect the user and the instrument from the risk of shock hazard. (6) Fuse Replacement!WARNINGFor continued fire protection, replace fuse only with the specific type and rating by qualified personnel. Disconnect the power cord before replacing fuse.The fuse blows only when there is any wrong on the instrument, which will stop working under this situation. Please find out the cause, then open the outside case (Please see the Figure (A), Figure (B) on below) and replace a proper fuse as listed below. Be sure to use the correct fuse before changing the applying location. F101 : T 0.8A/250V F100 : T 0.5A/250V Check the line voltage setting on the rear panel. If the line voltage setting does not match, Please change the line voltage setting according to the following steps: 1. Remove line cord from AC socket. 2. Switch the “AC line voltage switch” to correct setting with flat-blade screwdriver and reinsert.Figure (A) (7) Cleaning the Cabinet Disconnect the AC power cord before cleaning the instrument.Figure (B)Use a soft cloth dampened in a solution of mild detergent and water. Do not spray cleaner directly onto the instrument, since it may leak into the cabinet and cause damage. Do not use chemicals containing benzing, benzne, toluene, xylene, acetone, or similar solvents.GFG-3015p.3(8) Operation environment Indoor use Altitude up to 2000m Temperature to satisfy the specification : Operating temperature : Storage temperature : Relative humidity : Installation category： Pollution degree：18oC ~ 28oC (+64.4oF ~ +82.4oF) 0oC ~ 40oC (+32oF ~ +104oF) -10oC ~ 70oC (+14oF ~ 158oF) up to 90% when 0oC~35oC; up to 70% when 35oC~40oC CAT Ⅱ(The detail is as Table A) 2CAT Ⅳ CAT Ⅲ CAT Ⅱ CAT ⅠTable A For measurements performed at the source of the lowvoltage installation. For measurements performed in the building installation. For measurements performed on circuits directly connected to the low-voltage installation. For measurements performed on circuits not directly connected to Mains.(9) Place GFG-3015 in a location with a suitable environment as stated above free from dust, direct exposition of sunlight, and strong effect of magnetic fields. (10) For United KingdomAs the colours of the wires in mains leads may not correspond with the coloured markings identified in your plug/appliance, proceed as follows: The wire which is coloured Green and Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol or coloured Green or Green and Yellow. The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black. The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red. If in doubt, consult the instructions provided with the equipment or contact the supplier. This cable/appliance should be protected by a suitably rated and approved HBC mains fuse; refer to the rating information on the equipment and/or user instructions for details. As a guide, cable of 0.75mm2 should be protected by a 3A or 5A fuse. Larger conductorsNOTEThis lead/appliance must only be wired by competent persons.WARNINGTHIS APPLIANCE MUST BE EARTHEDIMPORTANTThe wires in this lead are coloured in accordance with the following codes: Green/Yellow :Earth Blue :Neutral :Live Brownwould normally require 13A types, depending on the connection method used. Any moulded mains connector that requires removal/replacement must be destroyed by removal of any fuse and fuse carrier and disposed of immediately, as a plug with bared wires is hazardous if engaged in a live socket. Any re-wiring must be carried out in accordance with the information detailed in this section.(Phase)p. 4GFG-30152. Product IntroductionThe frequency feedback method applied by GFG-3015 is a new technique that generates stable output frequency with extraordinary accuracy for Function Generator. The traditional function generators typically use integrating circuit and constant current circuit techniques that are easily affected by operation temperature or the quality of resistor or capacitor and other key components to occur poor frequency accuracy. The innovative design for GFG-3015 is to get rid of these problems. The frequency feedback system needs a compatible, powerful frequency counter. GW has designed his own full-function counter chip, GFC-9701, for this system with high frequency test range and full functions, including Period test, Duty test, Ratio test, Time interval, Pulse wide, direct display and direct connect with CPU system. GFG-3015 uses this Chip to read output frequency value at any time. Then CPU will modify the correct value of D/A converter immediately according to this value, so that the user can get a high accuracy frequency from GFG-3015 Function Generator. Besides, the GFG-3015 can also generate a high accuracy frequency to provide high frequency resolution.Graph1 indicates the fundamental construction of a frequency feedback system.D/A ConvertorVCOAMPO/PUser InterfaceCPUCounter (GFC-9701)Except the different design from the typical circuit, GFG-3015 system also has micro controller (CPU unit) equipping an additional RS-232 interface functions which will be used on any test system with other instrument or to be controlled by computer.GFG-3015p.53. FeaturesGFG-3015 is a functional Function generator that applies Frequency feedback control system technique and can generate high frequency accuracy with high resolution. Its main signal source can generate waveforms including sine wave, square wave, triangle wave, and ramp wave. There are additional features listed as follows: All digitized operation user interface Output Waveforms of Sine, Square, Triangle, Ramp, Pulse, AM, FM, Sweep, Trigger and Gate or Burst. Wide output frequency range 0.01Hz ~ 15MHz. High frequency accuracy 0.02% ± 5 count. Maximum frequency resolution 10mHz. Dual displays indicate frequency and amplitude or other necessary information. Built-in 6-digit INT/EXT Function Counter and up to 150MHz frequency range with high resolution. INT/EXT AM/FM Modulation with internal modulation signal output. LIN/LOG Sweep Mode with internal sweep signal output. VCF of 100:1 EXT Frequency Control. SYNC Output. TTL Output. Synchronization GCV Output. Variable DC Offset Control Output Overload Protection RS232 Interface Standardp. 6GFG-30154. SpecificationsOutput Waveforms Sine, Square, Triangle, ± Ramp, Pulse, AM, FM, Sweep, Trigger, Gate or Burst 1.5001MHz ~ 15.0000MHz …(100Hz) 150.01kHz ~ 1.50000MHz…(10Hz) 15.001kHz ~ 150.000kHz…(1Hz) 1.5001kHz ~ 15.0000kHz…(0.1Hz); 150.01Hz ~ 1.50000kHz…(10mHz) 15.01Hz ~ 150.00Hz…(10mHz) 1.51Hz ~ 15.00Hz…(10mHz) 0.01Hz ~ 1.50Hz…(10mHz) 0.02% ±5 CountFrequency Range 10mHz~15MHz in 8 Frequency Range (auto switch)Frequency ResolutionFrequency AccuracyOutput Impedance 50Ω ± 10% Range Amplitude Resolution Accuracy Unit Range DC Offset Resolution Accuracy Control Range Duty Resolution Accuracy Sync Output Sine Impedance Level Distortion 10.00V~0.01V (into 50Ω) 4 amplitude ranges | Vac peak | + | Vdc | < 5V 10mV(10.00V~0.01V) ≤3% ±5count at 10Hz~1MHz ≤10% ±5count at 1MHz~15MHz Vpp, Vrms, dBm ± 5V (into 50Ω) | Vac peak | + | Vdc | < 5V 10mV ≤3% ±3count at Amplitude Min. 80%:20%:80% to 1MHz 1% ≤1% to 1MHz at 50% Duty 50 Ω ±10% >1Vp-p open circuit ≤0.5%(-46dBc) From 10Hz~100kHz ≤-30dBc To 15MHz (Spec. applied form 1Vpp to 10Vpp) ±1% of period + 3ns <18nSec <1% of full scale output at 100HzSquare Triangle and RampAsymmetry Rise or Fall Time Linearity ErrorGFG-3015p.7Sweep ModeSweep Range Sweep Width Rate Sweep output Types Waveform Rate Frequency Range Rate Frequency Accuracy Rate Frequency ResolutionLinear or Log sweep 150kHz~15MHz 15kHz~1.5MHz 1.5kHz~150kHz 150Hz~15kHz 15Hz~1.5kHz 1.5Hz~150Hz 0.15Hz~15Hz 0.01Hz~1.5Hz >100:1(In Same Frequency Range) 0.01Hz~10kHz 0 to≥-5Vp-p into 10k Ω AM, FM, Sweep, Trigger(int/ext), Gate or Burst (Implement by Trigger Type) Sine, Square, Triangle, Ramp or Variable Symmetry Pulse 10mHz~10KHz in 3 Frequency Range (auto switch) 5%±1 countSymmetry Control 90:10:90 ; Resolution:1%10.0kHz~0.1kHz(100Hz) 99Hz~1Hz(1Hz) 0.99Hz~0.01Hz(0.01Hz) Symmetry 90%:10%:90%; Resolution:1% Symmetry Accuracy ±1 count(≤1%) Output Level Modulation Sine Wave Distortion Amplitude Modulation Depth Modulation Frequency Rate Carries -3dB Bandwidth External Sensitivity ≧1Vpp into 10kΩ load ≤2% from 10Hz to 10kHz0~100% 0.01Hz ~ 10kHz(INT) DC~1MHz(EXT) <100Hz to >5MHz ≤10Vpp for 100% modulationFrequency Modulation Deviation 0~±15% Modulation 0.01Hz ~ 10kHz(INT) DC ~ 50kHz(EXT) Frequency Rate External Sensitivity ≤5Vpp for 15% deviationp. 8GFG-3015Start/Stop Phase Range Rate Trigger-90º ~ +80º 0.01Hz~10kHzVCFFrequency Range 0.1Hz ~ 1MHz(Useful to 10MHz) Ext Trig Frequency DC to 1MHz,TTL compatible input level Range Gate or Burst Implement by Trigger setting. 100:1(0 to 10V± 1V) In Same Frequency Range Range Input Linearity <0.5% to 1MHz,<5% to 10MHz Input Impedance 10 k Ω ≧3Vpp LevelTTL Output GCV OutputFan-out >10 TTL Load To set the voltage between 0.2V to 2V as per different Frequency in Same frequency Range INT/EXT Switch Selector Range Accuracy Time Base Resolution Input Impedance Sensitivity 5Hz~150MHz EXT Time Base(10MHz) Accuracy ± 1 count ± 20ppm(23ºC ± 5ºC) after 30 minutes warm up The maximum resolution is 100nHz for 1Hz and 1Hz for 100MHz 1MΩ // 150pF ≤35mVrms(5Hz~100MHz); ≤45mVrms(100MHz~150MHz)Frequency CounterInterface Accessories Power Source Dimensions WeightRS232 GTL-101 × 2, Instruction Manual × 1, Power cord × 1 115/ 230V AC ±15%, Approx. 5kg 50/60Hz 290 (W) × 142 (H) × 346 (D) mmGFG-3015p.95. Front and Rear PanelsFront Panelp. 10GFG-30151POWER button Main Function keys: :Push the button to turn on the power, and the display is activated. Push again the button to turn off the power. Key is to set main output waveform in the cycle of Sine, Triangle and Square. When the key is pressed, the related waveform LEDs will light up accordingly.FUNC2Key is to set main frequency entry mode. Key in the desired value of frequency by using the number keys or Modify keys and Unit keys. When the key is pressed, the FREQ LED (on parameter display area A) will be flashing until other mode is set.FREQKey is to set main amplitude entry mode. Key in the desired value of voltage by using the number keys or Modify keys and Unit keys. When the key is pressed, the AMPL LED (on parameter display area B) will be flashing until other mode is set.AMPLKey is to set main output offset voltage entry mode. Key in the desired value of voltage by using the number keys or Modify keys and Unit keys. When the key is pressed, the OFFS LED (on parameter display area B) will be flashing until other mode is set.OFFSETKey is to set main output Duty Cycle entry mode. Key in the desired value of percentage by using the number keys or Modify keys and Unit keys. When the key is pressed, the DUTY LED (on parameter display area B) will be flashing until other mode is set.DUTY3Modulation/Sweep Function keys:Key is to start performing Amplitude Modulation, Frequency Modulation or Sweep function. When the key is pressed again, the functions will stop. When the key is pressed, the ON/OFF LED (on MOD/SWP Function LED area) will light up, press again the key, the LED will be off. These keys control the functions of sweep and modulation.MOD/ON SOURCEKey is to set Span of Modulation or Sweep entry mode and choose the source of modulation. If set to source choose function, must use Secondary Function mode.SPAN FMKey is to choose the type of modulation between AM and FM. If want to set to FM function, must use Secondary Function mode.AM INT/EXT RATEKey is to set Rate of Modulation, Sweep or Trigger entry mode and choose the signal source of Modulation, Sweep or Trigger. If want to set to signal, must use Secondary Functions mode.GFG-3015p.11STOPKey is to set Start Frequency of Sweep entry mode and Stop Frequency of Sweep entry mode. If set to Stop Frequency of Sweep entry mode, must use Secondary Functions mode.START LOG SKey is to choose the type of Sweep between liner sweep and LOG sweep. If set to LOG sweep, must use Secondary Function mode.LIN S SWP CF SYMKey is to set the Duty cycle of Modulation, Sweep or Trigger source entry mode. Key in the desired value of percentage by using number keys or modify keys and Unit keys. If want to set to center frequency of Sweep function that must use Secondary Functions mode. When the key is pressed, the SYM LED (on parameter display area B) will be flashing until other mode is set. When you use center frequency entry mode then the CF LED (In parameter display area A) will be flashing until other mode is set. The detail operation of these keys. Please refer to the instruction in next Chapter.RECL4System keys:Key is to save or reload the setup parameters of the instrument into or take out from memory; the selected DEFAU numbers is from 0 to 9, up to 10 groups.STORKey is to start performing RS232 interface. Press the key then use rotational knob to change function states (ON or OFF). Press the key again then use rotational knob to change the Baud rate. The cycle order is in 300, 600, 1200, 2400, 4800, 9600 and 19200 sequence. If set the instrument to default state, must use Secondary Function mode. Key is to set the Secondary Functions mode. When the key is pressed, the instrument will choose Secondary Function and the SHIFT LED will light up.SHIFTDEFAU RS232 RS232For example, press SHIFT value of the instrument.5+Hz/Vppcan recall the defaultUnit keys:In ‘Normal’ mode, these keys are used to assign the unit and to set the entered value. For example, you can use dBm and Vpp to set the output amplitude. They can be used to set frequency (MHz, kHz, Hz), OFFSET, and PHASE, etc. In STOR or RECL modes, they are used as ‘Enter’.DEG/% MHz/dBKHz/Vrmsp. 12GFG-30156Entry keys:9 . To and keys are used to input value. A unit key should be pressed to set the entered value. 0key is blank space that used to delete the entered value entirely and the other function is minus key .-/BK SP7Modify keys:Keys are used to change the digit of input value. User can use the Rotate knob for increasing or decreasing that digit.◄ ►Key to terminate the function of all Modify keys until user press this key again. When the key is pressed, the HOLD LED will light up until the key is pressed again.HOLD8Trigger Function keys:Key is to start performing Trigger function mode. If the key is pressed again, the function will stop. When the key is pressed, the ON/OFF LED (In Trigger Function LED area) will light up until the key is pressed again (The LED will light off).TRIG ONKey is to choose the type of Trigger, Single-trigger or multi-trigger. When the key is pressed, the MULT or SINGL LED (In Trigger Function LED area) will light up accordingly.SIGL/MUTKey is to set the phase of trigger function entry mode. Key in the desired value of percentage by using number keys, modify keys and Unit keys. When the key is pressed, the PHASE LED (In parameter display area B) will be flashing until other mode is set.PHASETRIG EXTKey is to choose the Trigger signal source, internal orexternal. When the key is pressed, the EXT LED (In Trigger Function LED area) will light up accordingly until the key is pressed again (The LED will light off).INT/EXT9Counter Function key:10Parameter display Area (A):Key is to set the Gate time of External counter GATE function. The cycle order is according to 0.01s, 0.1s, 1s, and 10s. When the key is pressed, the Gate time LEDs will light up according user’s wish. The other function is to choose input signal source of counter, internal or external, by using Secondary Function mode. The 6-digit Parameter display presents the parameter values and information about the current status and unit. The START LED light on indicated that the value of display was Start frequency of sweep function right now. The STOP LED light on indicated that the value of display was Stop frequency of sweep function right now. The CF LED light on indicated that the value of display was center frequency of sweep function right now.GFG-3015p.1311Parameter display Area (B):121314Waveform Function LEDs Counter Functions LEDs Modulation/Sweep Function LEDs: : :The FREQ LED light on indicated that the value of display was main output frequency right now. The RATE LED light on indicated that the value of display was rate frequency of sweep or modulation or trigger function right now. The SPAN LED light on indicated that the value of display was Span frequency of sweep function right now. The MHz, kHz, Hz and mHz LED light on indicated that unit according current value of display. This 4-digit Parameter display presents the parameter values and information about the current status and unit. The AMPL LED light on indicated that the value of display was main output amplitude right now. The OFFS LED light on indicated that the value of display was main output DC offset voltage right now. The DUTY LED light on indicated that the value of display was main output duty cycle right now. The SPAN LED light on indicated that the value of display was span frequency of modulation function right now. The SYM LED light on indicated that the value of display was modulation signal duty cycle of sweep or modulation or trigger function right now. The PHASE LED light on indicated that the value of display was phase of trigger function right now. The STOR LED light on indicated that the value of display was save group number right now. The RECL LED light on indicated that the value of display was reload group number right now. The V, rms, dBm kHz, Hz, % and DEG LED light on indicated that unit according current value of display. These LEDs indicate the figure of main output waveform and the current operation functions. These LEDs indicate the GATE TIME of external counter and the current value. These LEDs indicate the current status of Sweep and Modulation and the current operation functions. The AM LED lights on to indicate the setting status of amplitude modulation function. The FM LED lights on to indicate the setting status of frequency modulation function. The LIN LED lights on to indicate the setting status of liner sweep function. The LOG LED lights on to indicate the setting status of LOG sweep function. The Sine, Triangle and Square LED light on indicated that according Modulation source waveform. The EXT LED lights on to indicate the external sweep or modulation signal source. The ON/OFF LED lights on to indicate that the sweep or modulation function is enabled.p. 14GFG-3015。

函数信号发生器使用说明1－1 SG1651A函数信号发生器使用说明一、概述本仪器是一台具有高度稳定性、多功能等特点的函数信号发生器。

能直接产生正弦波、三角波、方波、斜波、脉冲波，波形对称可调并具有反向输出，直流电平可连续调节。

TTL可与主信号做同步输出。

还具有VCF输入控制功能。

频率计可做内部频率显示，也可外测1Hz~10.0MHz的信号频率，电压用LED显示。

二、使用说明2.1面板标志说明及功能见表1和图1图1DC1641数字函数信号发生器使用说明一、概述DC1641使用LCD显示、微处理器（CPU）控制的函数信号发生器，是一种小型的、由集成电路、单片机与半导体管构成的便携式通用函数信号发生器，其函数信号有正弦波、三角波、方波、锯齿波、脉冲五种不同的波形。

信号频率可调范围从0.1Hz~2MHz，分七个档级，频率段、频率值、波形选择均由LCD显示。

信号的最大幅度可达20Vp-p。

脉冲的占空比系数由10%~90%连续可调，五种信号均可加±10V的直流偏置电压。

并具有TTL电平的同步信号输出，脉冲信号反向及输出幅度衰减等多种功能。

除此以外，能外接计数输入，作频率计数器使用，其频率范围从10Hz~10MHz（50、100MHz[根据用户需要]）。

计数频率等功能信息均由LCD显示，发光二极管指示计数闸门、占空比、直流偏置、电源。

读数直观、方便、准确。

二、技术要求2.1函数发生器产生正弦波、三角波、方波、锯齿波和脉冲波。

2.1.1函数信号频率范围和精度a、频率范围由0.1Hz~2MHz分七个频率档级LCD显示，各档级之间有很宽的覆盖度，如下所示：频率档级频率范围（Hz）1 0.1~210 1~20100 10~2001K 100~2K10K 1K ~20K100K 10K ~200K1M 100K ~2M频率显示方式：LCD显示，发光二极管指示闸门、占空比、直流偏置、电源。

b、频率精度：±（1个字±时基精度）2.1.2 正弦波失真度10~30Hz，〈3%30Hz~100KHz，≤1%2.1.3 方波响应前沿/后沿≤100ns（开路）2.1.4 同步输出信号的幅度与前沿a、幅度（开路）：≥3Vp-pb、前沿：Tr≤35ns2.1.5 最大输出幅度（开路）a、F〈1MHz 最大输出幅度≥20Vp-pb、1MHz≤F≤2MHz 最大输出幅度≥16Vp-p2.1.6 直流偏置（开路），最大直流偏置±10V2.1.7 输出阻抗Z Zo=50±5Ω2.1.8 占空比脉冲的占空比与锯齿波的上升，下降沿可连续变化，其变化范围在10%~90%。

函数信号发生器使用说明1－1 SG1651A函数信号发生器使用说明一、概述本仪器是一台具有高度稳定性、多功能等特点的函数信号发生器。

能直接产生正弦波、三角波、方波、斜波、脉冲波，波形对称可调并具有反向输出，直流电平可连续调节。

TTL可与主信号做同步输出。

还具有VCF输入控制功能。

频率计可做内部频率显示，也可外测1Hz~10.0MHz的信号频率，电压用LED显示。

二、使用说明2.1面板标志说明及功能见表1和图1图1DC1641数字函数信号发生器使用说明一、概述DC1641使用LCD显示、微处理器（CPU）控制的函数信号发生器，是一种小型的、由集成电路、单片机与半导体管构成的便携式通用函数信号发生器，其函数信号有正弦波、三角波、方波、锯齿波、脉冲五种不同的波形。

信号频率可调范围从0.1Hz~2MHz，分七个档级，频率段、频率值、波形选择均由LCD显示。

信号的最大幅度可达20Vp-p。

脉冲的占空比系数由10%~90%连续可调，五种信号均可加±10V的直流偏置电压。

并具有TTL电平的同步信号输出，脉冲信号反向及输出幅度衰减等多种功能。

除此以外，能外接计数输入，作频率计数器使用，其频率范围从10Hz~10MHz（50、100MHz[根据用户需要]）。

计数频率等功能信息均由LCD显示，发光二极管指示计数闸门、占空比、直流偏置、电源。

读数直观、方便、准确。

二、技术要求2.1函数发生器产生正弦波、三角波、方波、锯齿波和脉冲波。

2.1.1函数信号频率范围和精度a、频率范围由0.1Hz~2MHz分七个频率档级LCD显示，各档级之间有很宽的覆盖度，如下所示：频率档级频率范围（Hz）1 0.1~210 1~20100 10~2001K 100~2K10K 1K ~20K100K 10K ~200K1M 100K ~2M频率显示方式：LCD显示，发光二极管指示闸门、占空比、直流偏置、电源。

b、频率精度：±（1个字±时基精度）2.1.2 正弦波失真度10~30Hz，〈3%30Hz~100KHz，≤1%2.1.3 方波响应前沿/后沿≤100ns（开路）2.1.4 同步输出信号的幅度与前沿a、幅度（开路）：≥3Vp-pb、前沿：Tr≤35ns2.1.5 最大输出幅度（开路）a、F〈1MHz 最大输出幅度≥20Vp-pb、1MHz≤F≤2MHz 最大输出幅度≥16Vp-p2.1.6 直流偏置（开路），最大直流偏置±10V2.1.7 输出阻抗Z Zo=50±5Ω2.1.8 占空比脉冲的占空比与锯齿波的上升，下降沿可连续变化，其变化范围在10%~90%。

信号发生器本人介绍一下信号发生器的使用和操作步骤.1、信号发生器参数性能频率范围：0.2Hz ~2MHz粗调、微调旋钮正弦波, 三角波, 方波, TTL 脉波0.5" 大型 LED 显示器可调 DC offset 电位输出过载保护信号发生器/信号源的技术指标:波形正弦波, 三角波, 方波, Ramp 与脉波输出振幅>20Vp-p (open circuit)； >10Vp-p (加 50Ω负载) 阻抗50Ω+10%衰减器-20dB+1.0dB (at 1kHz)DC 飘移<-10V ~ >+10V, (<-5V ~ >+5V 加 50Ω负载)周期控制 1 : 1 to 10 : 1 continuously rating显示幕4位LED显示幕频率范围0.2Hz to2MHz(共 7 档)频率控制Separate coarse and fine tuning失真< 1% 0.2Hz ~ 20kHz , < 2% 20kHz ~ 200kHz频率响应< 0.2dB 0.2Hz ~100kHz； < 1dB100kHz~2MHz线性98% 0.2Hz ~100kHz； 95%100kHz~2MHz对称性<2% 0.2Hz ~100kHz上升/下降时间<120nS位准4Vp-p±1Vp-p ~ 14.5Vp-p±0.5Vp-p 可调上升/下降时间<120nS位准>3Vpp上升/下降时间<30nS输入电压约 0V~10V ±1V input for 10 : 1 frequency ratio输入阻抗10kΩ (±10%)交流 100V/120V/220V/230V ±10%, 50/60Hz电源线× 1, 操作手册× 1, 测试线 GTL-101 × 1230(宽) × 95(高) × 280(长) mm,约 2.1 公斤信号发生器是为进行电子测量提供满足一定技术要求电信号的仪器设备。