Dual Trace Oscilloscope
Contents
1. LINE GW INSTEK PANEL OVERVIEW PAN EL OVERVIEW Front Panel Overview Main Display Horizontal Controls LCD Display Trigger Controls fo GWINSTEK Gos s30Fc lt q POSITION SW VAR N N EN POSITION amp 3 v j wan y ITN ra Loe VWF Ll f N f Yeal Voa N Ra Display Controls Input Terminals Vertical Controls Detailed descriptions of each block start from the next page Main Display Shows the waveforms of input signals Display Controls power on off display configuration and Controls the probe compensation output LCD Display Shows the vertical scale horizontal scale X Y display mode and waveform frequencies Horizontal Controls the horizontal scale horizontal position Controls sweep length and x10 magnification 13 GW INSTEK GOS 630FC User Manual Vertical Controls the vertical scale vertical position display Controls mode CH2 inversion and alternate display mode Trigger Controls the trigger mode trigger level trigger Controls coupling source trigger slope and alternate triggering mode Accepts the external trigger input Input Accepts the CH1 and CH2 input signals and ground Terminals wire Controls the input signal coupling mode Display Controls FOCU2. GW INSTEK GOS 630FC User Manual A prEN DIX Line Voltage amp Fuse Replacement 1 Take off the power cord 2 Use a small minus driver and pull out the fuse socket 3 Rotate the holder so that the target voltage marking moves to the upper side yf AC115V AC230V ee ae G 115 230 D Zg oez GILL 36 GW INSTEK APPENDIX 4 If necessary replace the fuse that is attached to the fuse holder 5 Push the fuse holder back into the socket Fuse rating AC 115V T0 63A 250V AC 230V T0 315A 250V 37 GW INSTEK GOS 630FC User Manual Specifications The specifications apply when the GOS 630FC is powered on for at least 30 minutes under 20 C 30 C Vertical Sensitivity ImV DIV to 2mV DIV 5 accuracy 5mV DIV to 5V DIV 3 Bandwidth ImV DIV to 2mV DIV DC to 7MHz 5mV DIV to 5V DIV DC to 30MHz AC coupling gt 10Hz reference 100kHz 8DIV 3dB Rise time 1mV DIV to 2mV DIV Approx 50nS 5mV DIV to 5V DIV Approx 11 7nS Input impedance Approx 1M ohm 25pF Square wave lt 5 Overshoot at 10mV DIV characteristics Other ranges 5 added to the above Linearity 0 1DIV when moving 2 DIV at center Vertical mode CH1 CH2 DUAL ADD Chop frequency Approx 250kHz Input coupling AC GND DC Max input voltage CAT II 300Vpeak AC lt 1kHz Max effective Probel 1 40Vpp 14Vrms Sine wave readout Probel0 1 400Vpp 140Vrms Sine wave Common mode 50 1 at 50kHz sine wave rejection rati
3. Knob At the minimum position the horizontal scale becomes 2 5 times wider than the original value selected by the TIME DIV knob For example if the original scale is 1mS DIV the adjusted scale becomes 2 5mS DIV At the maximum CAL position there is no change in the horizontal scale 4 TIME DIV Controls the horizontal scale from 0 2 us div to 0 5 Knob s div in 20 steps When X Y is selected the oscilloscope works in the X Y mode For X Y mode details see page32 16 GW INSTEK PANEL OVERVIEW GW INSTEK GOS 630FC User Manual DUAL The CH1 and CH2 signals are displayed becomes 2 5 times wider than the original value selected by the VOLTS DIV knob For example if the original scale is 1mV DIV the adjusted scale becomes 2 5mV DIV Vertical Controls simultaneously ADD The CH1 and CH2 signals are added or earlier subtracted and then the result is oe er pan F displayed For CH1 CH2 a Yer vA amp addition subtraction details see page31 Sr er ee E J Mic MODE 5 VAR Knob Adjusts the vertical scale E H T At the minimum position the vertical scale 1 VOLTS DIV Controls the CH1 CH2 vertical scale from At the maximum CAL position there is no Knob ImV DIV to 5V DIV in 12 steps change in the vertical scale 2 Vertical Controls the vertical position of traces and light 6 CH2 INV Inverts the CH2 input signal vertically When the POSITION spots for CH1 CH2 Switch
4. C Pollution Degree EN 61010 1 2001 specifies the pollution degrees and their requirements as follows The GOS 630FC falls under degree 2 Pollution refers to addition of foreign matter solid liquid or gaseous ionized gases that may produce a reduction of dielectric strength or surface resistivity Pollution degree 1 No pollution or only dry non conductive pollution occurs The pollution has no influence Pollution degree 2 Normally only non conductive pollution occurs Occasionally however a temporary conductivity caused by condensation must be expected Pollution degree 3 Conductive pollution occurs or dry non conductive pollution occurs which becomes conductive due to condensation which is expected In such conditions equipment is normally protected against exposure to direct sunlight precipitation and full wind pressure but neither temperature nor humidity is controlled Location Indoor Relative Humidity lt 70 Temperature 10 C to 70 C GW INSTEK SAFETY INSTRUCTIONS Power cord for the United Kingdom When using the instrument 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 A N WARNING THIS APPLIANCE MUST BE EARTHED IMPORTANT The wires in this lead are coloured in accordance with the following code Green Yellow Earth Blue Neutral Brown Live Phase As the colours
5. all signal components appear 3 Configure the trigger settings For details see page19 4 Use the VOLTS DIV knob and vertical POSITION knob to adjust the vertical scale and position of the waveform 5 Press the AUTO TIMEBASE key to automatically adjust the horizontal scale according to the input signal 6 If necessary use the TIME DIV knob to adjust the horizontal scale manually Use the horizontal POSITION knob to adjust the position of the waveform 28 CH1 X 1MQ 25pF VOLTS DIV A POSITION v Q Q AUTO TIMEBASE C 2 ie TIME DIV O lt POSITION gt 3 GW INSTEK MEASUREMENT GW INSTEK GOS 630FC User Manual 6 Use the vertical ALT CHOP alone Dual Channel Measurement switch to select how the two Sc _xx _a aQqqQqooeoe waveform appear on the Steps 1 Connect both CH1 and CH2 ae ee display alternately ALT mode signals to the input terminals or simultanouesly CHOP mode See pagel7 for details 2 Select the vertical coupling fe L oF 7 If necessary use the aa between AC DC components we VOLTS DIV knob and vertical C vo are blocked or DC all signal POSITION knob to adjust the 5 G components appear for both vertical scale and position of channels the waveform e TIME DIV 3 onigun the trigger settings aa D 8 If necessary use the TIME DIV For details see page13 ova T 7 P knob and horizontal POSITION J Make sure the trigger SOURCE ax ail knob
6. be clearly viewed negative polarity signals The TRIG ALT switch works when the vertical mode is in the DUAL position and also the trigger source is in the CH1 or CH2 position Note e The TRIG ALT switch does not work when the i Tng ee canno trigger ALT CHOP switch is in the CHOP position input signals when their frequencies are less than 25Hz e The frequency counter in the LCD display does l l l not work when the TRIG ALT switch is pressed 3 Trigger Changes the trigger level vertically 2 Trigger The TRIGGER MODE switch selects when the LEVEL Knob The meg level Boa up when the trigger LEVEL MODE oscilloscope responds to the trigger conditions knob is turned clockwise Switch The trigger level moves down when the trigger LEVEL knob is t d terclockwise AUTO The oscilloscope sweeps regardless of e a aa e os Seep beg haere ee the existence of trigger conditions NORM The oscilloscope sweeps only when a trigger condition occurs 19 20 GY INSTEK 4 Trigger SLOPE Switch 5 Trigger SOURCE Switch 6 TRIGIN Terminal PANEL OVERVIEW Selects the triggering slope When in the position fill the oscilloscope triggers when the positive slope of the trigger source signal crosses the trigger level When in the position lili the oscilloscope triggers when the negative slope of the trigger source signal crosses the trigger level ae a Slope Range dD a J Fipe N Range Lev
7. guidelines General Guideline M CAUTION Never connect a hazardous live voltage to the ground side of the BNC connectors It might lead to fire or electric shock Do not place heavy objects on the instrument Avoid severe impacts or rough handlings that lead to damaging the instruments Do not discharge static electricity onto the instruments Use only mating connectors not bare wires for the terminals Do not block the cooling fan opening Do not perform measurements at power generating sources and building installation sites See note below Do not disassemble the instrument unless you are technically qualified To prevent a permanent damage to the CRT phosphor avoid excessively brightening the trace or holding a light spot for an unreasonably long time Do not operate the instrument in a place where strong magnetic or electric field exists as it may disturb the measurement Make sure the input voltage does not exceed the following values Input Terminal Maximum Input Voltage CH1 CH2 input 300Vpeak EXT TRIG input 300Vpeak GY INSTEK Power Supply N WARNING Fuse N WARNING SAFETY INSTRUCTIONS Probe input 600Vpeak Z AXIS input 30V peak Measurement categories EN 61010 1 2001 specifies the measurement categories and their requirements as follows The GOS 630FC falls under category II e Measurement category IV is for measurements performed at the source of low voltage installa
8. of the wires in mains leads may not correspond with the colours marking identified in your plug appliance proceed as follows The wire which is coloured Green amp Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol Dor coloured Green or Green amp 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 75mmz2 should be protected by a 3A or 5A fuse Larger conductors would 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 amp fuse carrier and disposed of immediately as a plug with bared wires is hazardous if a engaged in live socket Any re wiring must be carried out in accordance with the information detailed on this label GW INSTEK GOS 630FC User Manual PRODUCT OVERVIEW Product Description The GOS 630FC oscilloscope is a portable dual channel oscilloscope The GOS 630FC pro
9. standards were applied EMC EN 61326 1 Electrical equipment for measurement control and laboratory use EMC requirements 2006 Conducted Emission Radiated Emission EN 55011 1998 A1 1999 A2 2002 ClassB Current Harmonics Surge Immunity EN 61000 3 2 2000 A2 2005 EN 61000 4 5 1995 A1 2001 Voltage Fluctuations Conducted Susceptibility EN 61000 3 3 1995 A1 2001 EN 61000 4 6 1996 A1 2001 Electrical Fast Transients EN 61000 4 4 2004 Electrostatic Discharge Power Frequency Magnetic Field EN 61000 4 2 1995 A1 1998 EN 61000 4 8 1993 A1 2001 Low Voltage Equipment Directive 2006 95 EC Safety Requirements TEC EN 61010 1 2001 40
10. vertical mode switch is in the ADD position CH2 is Knob subtracted from CH1 instead of being added to 3 ALT CHOP Selects how the CH1 and CH2 signals appear in the oo CH2 addition subtraction details Switch display in the DUAL trace mode Beare CHOP The two signals are chopped and wm CHOP displayed simultaneously generally used in slow sweep 1ms DIV or slower ALT The two signals are displayed EL ALT alternatively generally used in fast sweep 0 5ms DIV or faster 4 Vertical Selects CH1 and CH2 display modes MODE Switch CH1 CH2 The CH1 or CH2 signal is displayed independently 17 18 GW INSTEK PANEL OVERVIEW GW INSTEK GOS 630FC User Manual TV V The oscilloscope triggers when a Tri gger Controls vertical video synchronization signal Sl appears For triggering on the field select 2ms DIV as the horizontal scale for triggering on the frame two interlaced fields 5ms DIV TV H The oscilloscope triggers when a horizontal video synchronization signal appears For triggering on the line select 10us DIV as the horizontal scale Use the SWP VAR knob to control the number of waveforms 1 Trigger ALT When pressed the TRIG ALT switch constantly Note rer TV V and TV H trigger the Switch toggles the trigger source between CH1 and CH2 oscilloscope responds only to signal so that both signals can
11. Dual Trace Oscilloscope GOS 630FC USER MANUAL GW INSTEK PART NO 820S 630FCMA1 ISO 9001 CERTIFIED MANUFACTURER GHW InNSTEK 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 Good Will Instrument Co Ltd No 7 1 Jhongsing Rd Tucheng City Taipei County 236 Taiwan GW INSTEK TABLE OF CONTENTS Table of Contents SAFETY INSTRUCTIONS PRODUCT OVERVIEW ca esecesecncececcacacseeeeeteeeeetinceenovens Product DeSCription cccscceeceeeeeeeees 10 Malin PEAUUNES as2cccecanseseistesscanswusnansenasen 1 BIOGK Diagtami cacsesenscesemucewansenseserieneses 12 PANEL OVERVIEW acct cesta cents cecserecnaacencuacesnnneeatenerianesis Front Panel Overview ccseceeeeeees 13 Display Controls eseceeee ert 14 RGD ED ic Ch gee ee eer er er ee 15 Horizontal Controls ccceeceeeneeeeees 16 Vertical Controls sare scisntastevereeenustenemesnens 17 Trigger Controls erin sctvesnnodannnicttesexcadiwsens 19 Input WOW MA I ANS secu esessensesteuseaenanaesese 22 Rear Panel Overview ccscsscesecssc
12. NEL OVERVIEW Rear Panel Overview A WARNING TO AVOID ELECTRIC SHOCK THE POWER CORD PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND FOR UED FIRE PROTECTION REPLACE ONLY WITH SPECIFIED A 5 N Nar 20mV DIV INTO 502 an TYPE AND RATED FUSE NO OPERATOR SERVICEABLE COMPONENTS INSIDE DO NOT REMOVE COVERS REFER SERVICING TO QUALIFIED PERSONNEL ENSURE THE POWER IS REMOVED FROM THE INSTRUMENT BEFORE REPLACING THE FUSE f LINE VOLTAGE RANGE ca N 7 j 50 60Hz FUSE T 0 63A WY 115V 97 132V 250V ore a 0 315 Ly RSL 230V 95 250V 250V POWER MAX 35 WATTS 40VA NI AC 1 FUSE amp Line Holds the AC mains fuse and selects the AC line Voltage voltage 115V or 230V Selector 2 AC Power Accepts the AC power cord Input Connector 3 CHI Outputs the CH1 signal approximately 20mV DIV OUTPUT when terminated with 500 Terminal 4 ZAXIS Accepts an external intensity modulation Z axis INPUT signal 1kHz square wave DC 2MHz Positive Terminal 80108 reduces intensity For detailed specifications see page38 e For AC line voltage selection and fuse replacement see page36 23 GW INsSTEeEK GOS 630FC User Manual Setup Default Settings Before powering up the oscilloscope set up the front panel as follows POWER Switch of
13. O E INTEN INTEN Knob Center FOCUS Knob Center Vertical MODE CH1 Switch ALT CHOP ALT Switch CH 2 INV O Released Inversion disabled Switch A POSITION CH1 CH2 v C Center of the display Vertical POSITION Knob VOLTS DIV CH1 CH2 50mV DIV VOLTS DIV Knob di 24 GY INSTEK SETUP CH1 CH2 VARIABLE Knob CH1 CH2 Coupling Switch Trigger SOURCE Switch Trigger SLOPE Switch TRIG ALT Switch Trigger MODE Switch TIME DIV Knob Horizontal SWP VAR Knob Horizontal POSITION Knob x10 MAG Switch TRIGGER MODE AUTO NORM TV V TV H TIME DIV 0 5S 0 24S c HORIZONTAL SWP VAR A N CAL lt POSITION gt X10 MAG CAL AC CH1 Positive slope Released alternating trigger disabled AUTO 0 5ms DIV CAL Center of the display Released x10 maginification disabled 25 GY INSTEK GOS 630FC User Manual Set up amp Probe Compensation Follow these steps and properly set up the oscilloscope make sure it is functional and compensate the probe Power on Press the Power switch and turn on the oscilloscope s power The O ma LED lights when the power is on The trace line starts to appear after 20 30 seconds Intensity and focus INTEN FOCUS Use the INTEN knob and FOCUS knob to adjust the trace line appearance to the best condition adjustment Probe connection cH1Q Connect the probe between th
14. S TRACE AUTO ROTATION TIMEBASE 1 CAL Output Generates the probe compensation signal 2Vp p 1kHz positive square wave For probe compensation details see page26 2 INTEN Knob Controls the brightness of a light spot or trace in the display 3 FOCUS Controls the focus sharpness of the waveforms in Knob the display 4 TRACE Controls the alignment of the horizontal trace in ROTATION parallel with graticule lines Point 5 AUTO Automatically adjusts the horizontal scale to an TIMEBASE appropriate range according to the input signal Key 6 POWER Turns on or off the oscilloscope s main power Switch When the power is on the LED lights 14 GW INSTEK PANEL OVERVIEW LCD Display Oins GAdGE ki 1 CHI Shows the CH1 vertical scale Vertical Scale 2 Horizontal Shows the horizontal scale Scale 3 X Y Mode When turned on indicates that the X Y mode is activated For X Y mode details see page32 4 Signal Shows the waveform frequency For frequency Frequency measurement details see page31 5 CH2 Shows the CH2 vertical scale Vertical Scale 15 GW INSTEK GOS 630FC User Manual Horizontal Controls jl 1 Horizontal Controls the horizontal position of traces and light POSITION spots Knob 2 x10 MAG Magnifies the horizontal scale by a factor of 10 For Switch horizontal magnification details see page33 3 SWP VAR Adjusts the horizontal scale
15. acy 50Hz to 1kHz 0 05 1kHz to 30MHz 0 02 Sensitivity gt 2DIV Display VOLT DIV TIME DIV X Y Frequency Backlight Orange Type 6 inch rectangular internal graticule Phosphor P 31 Acceleration Volt Approx 2kV Screen Size 8 x 10 DIV 1 DIV 10mm 0 3 9in AC115V 230V 15 50 60Hz Approx 40VA 35W max Indoor use Altitude lt 2000 m Ambient temperature To satisfy specifications 10 C to 35 C 50 F to 95 F Maximum operating range 0 C to 40 C 32 F to 104 F Relative humidity 85 RH max non condensing Installation Category Il Pollution degree 2 Ambient temperature 10 C to 70 C Relative humidity 70 RH maximum Power cord x 1 User manual x 1 Probe x 2 310 W x 150 H x 455 D mm Approx 8 2kgs 18 0lbs 39 GY INSTEK GOS 630FC User Manual Declaration of Conformity We 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 Oscilloscope Model Number GOS 630FC are 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 2004 108 EC 92 31 EEC 93 68 EEC and Low Voltage Directive 2006 95 EC For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Directive the following
16. e eu MOM 25 pF CAL output and the CH1 input terminal Select x10 attenuation 1 on the probe Probe attenuation Select x10 attenuation on the probe x10 x lt lt e 26 Coupling mode selection Select the AC position in the CH1 e T AC DC GND switch A square ii waveform appears in the display GW INSTEK SETUP VOLTS DIV 6 Vertical Use the CH1 VOLTS DIV knob ell adjustment and CH1 vertical POSITION knob J C 7 Horizontal adjustment 8 Probe 5V imV to adjust the vertical scale and position of the waveform Use the CH1 TIME DIV knob and o CH1 horizontal POSITION knob to C J adjust the horizontal scale and 05S 02s a position of the waveform lt POSITION gt Adjust the compensation point on the probe so compensa that the waveform becomes square tion Under compensation cml S T Right amount Over compensation Pt tt tt tt yt H 9 Completion Now setting up the oscilloscope is completed For more advanced measurements see page28 27 GW INSTEK M EASUREMENT GOS 630FC User Manual Single Channel Basic Measurement Steps 1 Connect the input signal to the CH1 or CH2 terminal 2 Select the vertical coupling between AC DC components are blocked or DC
17. e provides a lmV DIV high sensitivity The 30MHz frequency range is obtained by an improved triggering synchronization A built in 5 digit frequency counter offers 0 02 accuracy between 1kHz and 30MHz and 0 05 between 50Hz and 1kHz Pressing the AUTO TIMEBASE key automatically adjusts the sweep time to an appropriate range Even when observing two waveforms in different frequencies both waveforms can be stably triggered using the alternate triggering mode The oscilloscope has a sync separator circuit for the TV V and TV H signal triggering The CH1 signal is output from a rear panel terminal which can be applied to external devices Display intensity can be controlled via the TTL compatible z axis input on the rear panel The X Y mode compares the CH1 and CH2 signal amplitude It is useful for comparing the phase difference Incorrect operation generates a warning beep 11 GY INSTEK Block Diagram VERTICAL OUTPUT AMP zo OF 5g Sa VERT MODE SWITCH LOGIC SWITCHING CH1 SINGAL OUTPUT Q CH1 TRIG X AXIS PICKUP AMP CH1 X INPUT 12 CH2 TRIG PICKUP AMP GOS 630FC User Manual HORIZONTAL OUTPUT AMP HORIZONTAL SWITCHING TRIG T INPUT AMP A SWEEP GENERATOR TRIG GENERATOR EXT TRIG EE RUN SIGNAL FR AUTO CIRCUIT INPUT AC LINE 50 60 Hz POWER SUPPLY TO EACH BLOCK CALIBRATOR 2Vp p 1KHz SQUARE WAVE LCD
18. ed Make sure that the trigger mode is in the AUTO mode In the by ten times in the horizontal direction x10 magnification Any part can be covered by using the POSITION control 33 NORMAL mode the trace does not appear unless a trigger condition occurs The alternate trigger TRIG ALT switch does not work Make sure that the ALT CHOP switch is released ALT position The TRIG ALT switch does not work in the CHOP mode The frequency counter in the LCD display does not work Make sure that the TRIG ALT switch is not pressed The frequency counter does not work in the alternate trigger mode The TV trigger does not work Make sure that the video synchronization signal is positive The TV V TV H trigger works only when the synchronization signal is negative 34 GY INSTEK FAQ The input signal does not appear on the display Check the following settings e The coupling mode is not set at the GND mode in which the waveform does not appear on the display See page22 for details e The appropriate trigger source is selected See page19 for details The oscilloscope accuracy does not match the specifications Make sure the oscilloscope is powered on for at least 30 minutes within 20 C 30 C This is necessary to stabilize the oscilloscope For more information contact your local dealer Good Will Instruments website www gwinstek com tw or marketing goodwill com tw 35
19. eees 23 SETUP eee ee ee ee ee ee Default Settings ccceccsscceseneeeneees 24 Set up amp Probe Compensation 26 MEASUREMENT rererere sns E AEE Single Channel Basic Measurement 28 Dual Channel Measurement 29 Waveform Addition Subtraction 31 Frequency Measurement 064 3 MY WO GG ora e E eens 32 Waveform Magnification c 0cceee 33 GW INSTEK GOS 630FC User Manual Bee IN reo creators RTE E terete canons T wera panne Line Voltage amp Fuse Replacement Specifications asaseterccnnctensaenseceacnseeatsanes Declaration of Conformity c006 GY INSTEK SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS This chapter contains important safety instructions that you must follow when operating the instrument and when keeping it in storage Read the following instructions before operating the instrument to ensure your safety and to keep it in best condition Safety symbols These safety symbols may appear in this manual or on the instrument N WARNING N CAUTION Oep Warning Identifies conditions or practices that could result in injury or loss of life Caution Identifies conditions or practices that could result in damage to the instrument or to other properties DANGER High Voltage Attention Refer to the Manual Protective Conductor Terminal Earth Ground Terminal GY INSTEK GOS 630FC User Manual Safety
20. el a Selects the signal on which the oscilloscope sweeps CH1 CH1 signal becomes the trigger source CH2 CH2 signal becomes the trigger source LINE AC power line signal becomes the trigger source Useful when the input signal synchronizes with the power line frequency EXT The external trigger input TRIG IN terminal signal becomes the trigger source Accepts an external trigger source signal The signal becomes active when the trigger SOURCE switch is in the EXT position Input impedance 1MQ 25pF 21 GY INSTEK GOS 630FC User Manual Input Terminals o GND GND poe ae fo 1 CH 1 X Accepts the CH1 input signal In X Y mode the Input CH1 input signal becomes the X axis Terminal 2 AC GND Selects the coupling mode for the input signal DC Switch AC The oscilloscope block DC components included in the input signal GND Shows the ground zero volt level on the display This mode is only for checking the reference level input signal does not appear on the display DC The oscilloscope displays all of the input signal 3 GND Accepts a ground wire The GND terminal is Terminal connected to the oscilloscope mainframe 4 CH2 Y Accepts the CH2 input signal In X Y mode the Input CH2 input signal becomes the Y axis Terminal e For X Y mode details see page32 22 GW INSTEK PA
21. measuring the phase difference of two signals video color patterns and frequency response Steps 1 Make sure both CH1 and CH2 cH CH2 1MQ 25pF 1MQ 25pF waveforms appear on the display For details see page29 2 Move the TIME DIV knob to the e owv position J 0 5S 0 24S ED a 3 The CH1 and CH2 signals appear in the X Y mode and the X Y indicator in the LCD display turns on 4 To adjust the X axis position and vasev deflection use the horizontal POSITION knob position and CH1 VOLTS DIV knob dronni deflection gt 32 GW INSTEK MEASUREMENT GW INSTEK GOS 630FC User Manual VOLTS DIV 5 To adjust the Y axis position and deflection use the CH2 vertical J POSITION knob position and A POSITION CH2 VOLTS DIV knob i O deflection AQ Waveform Magnification Background The oscilloscope can magnify the waveform by ten times in the horizontal direction The The probe waveform is distorted magnification is useful for observing complex You might need to compensate the probe For details see page26 Note that frequency accuracy and duty factor are not specified for signals 5 the probe compensation waveform and therefore it should not be Steps 1 Make sure the waveform is shown on the used for reference purpose display 2 Press the x10 MAG switch The 0 The trace line does not appear on the display waveform becomes magnifi
22. o CH1 and CH2 vertical scales are equal Channel isolation gt 1000 1 at 50kHz 5mV DIV gt 30 1 at 30MHz CH1 signal output 20 mV DIV 502 50Hz to 5MHz CH2 INV BAL lt 1 DIV Reference at center graticule Trigger Trigger source CH1 CH2 LINE EXT Coupling AC 20Hz to full bandwidth Slope Sensitivity 20Hz to 2MHz 0 5 DIV TRIG ALT 2 DIV EXT 200mV 2MHz to 30MHz 1 5 DIV TRIG ALT 3 DIV EXT 800mV TV Sync pulse gt 1 DIV EXT 1V Triggering modes AUTO NORM TV V TV H EXT TRIG input Input impedance Approx 1MQ 25pF Max input CAT Il 300Vpeak lt 1kHz 38 GW INSTEK APPENDIX Horizontal Axis X Y Mode Z Axis Probe Compensation Signal Frequency Counter LCD CRT Power Source Power Operation Environment Storage Environment Accessories Dimensions Weight Sweep time 0 2uS to 0 5S DIV 3 accuracy X1OMAG accuracy 5 20 50nS uncalibrated Linearity 3 x10 5 20 50nS uncalibrated Sensitivity Same as vertical axis Bandwidth DC to at least 500kHz Phase Difference lt 3 degrees at DC to 50kHz Sensitivity 5Vpp Positive going reduces intensity Bandwidth DC to 2MHz Input resistance Approx 47kQ Max input voltage CAT II 30Vpeak AC lt 1 kHz Waveform Positive going square wave Frequency Approx 1 kHz Duty Ratio Within 48 52 Output voltage 2 Vp p 42 Output impedance Approx 1 kQ Display Digits Maximum 5 digit decimal Frequency Range 50Hz to 30MHz Accur
23. tions e Measurement category III is for measurements performed in building installations e Measurement category II is for measurements performed on the circuits directly connected to low voltage installations e Measurement category is for measurements performed on circuits not directly connected to mains AC Input voltage 115V 230V AC 50 60Hz The power supply voltage should not fluctuate more than 15 e To avoid electric shock connect the protective grounding conductor of the AC power cord to an earth ground e Fuse type T0 63A 250V AC 115V T0 315A 250V AC230V Make sure the correct type of fuse is installed before power up e To ensure fire protection replace the fuse only with the specified type and rating e Disconnect the power cord before fuse replacement e Make sure the cause of fuse blowout is fixed before replacing the fuse GY INSTEK GOS 630FC User Manual Cleaning the instrument Operation Environment Storage environment Disconnect the power cord before cleaning the instrument Use a soft cloth dampened in a solution of mild detergent and water Do not spray any liquid into the instrument Do not use chemicals containing harsh products such as benzene toluene xylene and acetone Location Indoor no direct sunlight dust free almost non conductive pollution See note below Relative Humidity lt 85 non condensing Altitude lt 2000m Temperature 0 C to 40
24. to adjust the horizontal 9ss gt ous switch is in either the CH1 or ey scale and position of the CH2 position ner ety lt C gt 4 Set the vertical MODE switch to oDe A iad ia taal Re Note The trigger ALT switch does not 0 work when the ALT CHOP switch 5 Both the CH1 and CH2 signals appear on the is in the CHOP position display 29 30 GW INSTEK MEASUREMENT Waveform Addition Subtraction Steps 1 Make sure both CH1 and CH2 ee waveforms appear on the display For details see page29 2 Set the vertical MODE switch to MODE the ADD position The two o waveforms are added and peg appear on the display as a single waveform 3 To subtract the CH2 signal from 2 the CH1 signal invert the CH2 signal by pressing the CH2 INV switch Frequency Measurement Frequency The frequency of the input signal appears on the shown on the LCD display and is constantly updated LCD me OA E rea OO AAG oy AE mV GB mV Frequency The CH1 signal frequency can be a on eae measurement measured using an external device using the CH1 such as frequency counter via the output rear panel terminal 31 GW INSTEK GOS 630FC User Manual X Y Mode Background The X Y mode compares the amplitude of two signals CH1 and CH2 one as X axis CH1 and the other as Y axis CH2 The X Y mode is useful for
25. vides maximum 30MHz DC bandwidth and 1mV DIV sensitivity Its time base reaches 0 2uS DIV and the sweep speed 100nS DIV The GOS 630FC uses a 6 inch rectangular cathode ray tube display with red internal graticule This is a sturdy easy to operate and highly reliabile product The GOS 630FC also incorporates a separate LCD Display which can show CH1 CH2 VOLT DIV TIME DIV X Y MODE and Frequency TRIGGER TRIG ALT MODE CI AUTO NORM W Vs H HORIZONTAL TIME DIV lt q POSITION gt SWP VAR Da O O VERTICAL GUINSTEXK Gos ssorc Onclionspe TRIG IN slope Ma 25pF m a CAT I 300Vpk MAX VAR VOLTS DIV VOLTS DIV A POSITION POSITION A ALS T NY Sv BA 5V mV MODE 1myV CH2 INV CH2 CH1 X DUAL Poe ckz 1M2 25pF 1M2 25pF FOCUS TRACE AUTO n GND ROTATION TMEBASE A id 7 N DC A CAT I Vs CAT IL 300Vpk MAX Ei 300Vpk MAX 10 GY INSTEK PRODUCT OVERVIEW Main Features High intensity and acceleration CRT Wide bandwidth and sensitivity Frequency Counter Automatic timebase adjustment Alternate triggering TV sync triggering CH1 output Z axis input X Y mode Buzzer alarm The CRT incorporates high beam transmission high intensity and a 2kV high acceleration voltage The CRT displays clearly readable traces even at higher sweep speeds In addition to the DC 30MHz 3dB wide bandwidth the oscilloscop
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