1. GENERAL INSTRUCTIONS
Contents
1. In the event of the equipment being returned to the METRIX after sales department or to a METRIX local agency carriage shall be payable by the customer The METRIX warranty does not cover 1 Repairs necessitated by misuse of the equipment or its use in conjunction with incompatible equipment 2 Modification of the equipment or any related software without the explicit involvement of the technical departments of METRIX 3 Repairs necessitated by attempts to repair or maintain the product made by a person not approved by the company 4 Adaptation to a specific application not provided for in the specifications of the equipment or the user manual The contents of this manual must not be reproduced in any form whatsoever without the consent of METRIX Maintenance For problems concerning maintenance spare parts warranty or others please contact your METRIX local agency This organisation will quickly process orders for spare parts and will help you towards a quick repair and calibration service Unpacking Repacking The equipment is fully inspected mechanically and electrically before despatch All possible precautions are taken to ensure that the instrument reaches you without damage Caution Should the instrument need to be returned preferably use the original packaging accompanied by a note indicating the reason for return as clearly as possible Note METRIX products are patented in FRANCE and OTHER COUNTRIES and2. Yellow 4 Reference Black 12 Trace rotate 5 Channel X Red 13 Intensity 6 Sweep speed 14 Focus 7 Zmodulation input Blue 15 On off LED 8 Trigger level Red OX 71 19
3. your own safety and that of the instrument you should comply with all the instructions set out in this manual 1 1 Precautions 1 1 1 Before use Your OX 71 oscilloscope runs on a 230 V AC 10 mains supply optionally 240 V 10 with a frequencyErreur Signet non d fini of 50 Hz compatible with a 40 60 Hz source To ensure the double insulation protection it is essential that all accessories connecting and interface cables and other measuring instruments connected to the oscilloscope should also conform to double insulation safety standard IEC 1010 The common mode voltage must not exceed 400 Vrms If all the accessories do not conform the signal reference must be earthed In this configuration the oscilloscope and its environment are no longer double insulated and floating measurements can no longer be taken During use Only use measuring leads in good condition Choose the appropriate vertical sensitivity and timebase ranges for the measurement Never exceed the protection limit values set out in the specifications Never touch an unused socket when the instrument is connected to measuring circuits Disconnect the instrument from both mains supply and measuring circuits in the event of any fault or abnormal stress The X Y and Z amplifier inputs with insulated safety sockets support a maximum voltage of 400 Vrms with f less than 1kHz Before undertaking any measurement check that the voltage level at the poi
4. 1 POWER LED 15 on amp A horizontal trace will appear on the screen after a few seconds Centre this horizontally and vertically 9 and 11 amp Adjust trace intensity 13 trace focus 14 amp If there is no trace check the fuseErreur Signet non d fini inside the oscilloscope 0 125 A slow blow The instrument is now ready to display signals 11 5 FUNCTIONAL DESCRIPTION 5 1 5 2 5 3 Vertical channelErreur Signet non d fini 11 10 3 5 and 7 9 Timebase 6 Vertical trace alignment Vertical sensitivity 7 positions 0 05 to 5 V div Vertical deflection coefficient input attenuator setting the amplitude of the observed signal on the channel concerned Y X and Z inputs via safety sockets Input couplingErreur Signet non defini AC Display AC component suppressing DC component DC Display complete signal O Display channel 0 V reference without short circuiting the input signal Can be used to position the trace accurately on screen control 11 Horizontal trace alignmentErreur Signet non d fini Sweep speedErreur Signet non d fini 19 positions 0 5 us to 0 5 s div TriggerErreur Signet non d fini LEVEL 8 Trigger levelErreur Signet non d fini adjustment Control unlatched no trace before trigger signal Control latched in the left end stop position FIXED AUTO Automatic timebase trigger The timebase returns to triggered mode on the first
5. SINGLE CHANNEL DOUBLE INSULATED OSCILLOSCOPE DIDASCOPE OX 71 USER MANUAL Copyright music IM 0908G01 OX 71 CONTENTS 1 GENERAL INSTRUCTIONS nn ati um tu te uu e bs 5 Vel Lee Sao eee Naa 5 deh t BEE US RR 5 1 20 DUNG SR Sone sath Eon Do Dn Pb ot Ert ee 5 1 2 Safety e Ee EE 5 18 SIMO ELM AER 6 14 SAG Blase atts carte cl acids danced econ TT 6 A Pp TET Y 1 6 Ic nt tint 7 1 7 Unpacking REDACKING sr eke sie deduce A 7 2 DESCRIPTION OF THE INSTRUMENT 8 3 CONTROLS o ine lee Pu emere re dette eae 9 enger RN rM 9 4 GETTING STARTED ea ce ente EN 10 5 FUNCTIONAL DESCRIPTION 11 Sola Vertical Galileo tione Porra ae HD ea toc erae ind te a ene te LE 11 52 TimebaS Ree 11 5 35 Kee 11 6 APPLICATIONS e n ex HU ec ee 12 6 1 Single trace Mode es er S E RH RR E MINE 12 DZ ES S duro CE 12 7 TECHNICAL SPECIFICATIONS a een pn mentors eg ese eno te ea 13 717 Merticaldellecion nee 13 7 2 Timebaso iie e tete t qa een 13 323 MITE SYSICM sc d etra A cete 13 1 4 AP eine 13 7 5 General specifications su EET m ea 14 L nee 14 8 INDEX u 15 9 OX 71 FRONT PANEL eorr area a 17 OX 71 OX 71 1 GENERAL INSTRUCTIONS This instrument conforms to the IEC 1010 double insulation safety standard Overvoltage category II Degree of pollution 2 concerning electronic measuring instruments To ensure
6. nently connected to the oscilloscope The instrument features an intensity modulation input Z input via safety socket Erreur Signet non d fini OX 71 3 CONTROLSErreur Signet non d fini 3 1 Front panelErreur Signet non d fini FUNCTION ITEM INDICATION Starting upErreur Signet non d fini Associated LED POWER 15 Power on off INTENSITY IntensityErreur Signet FOCUS non d fini FocusErreur Signet non d fini SignalsErreur Signet non d fini VERTICAL Y signal input Reference 177 Y X Z HORIZONTAL X signal input Z modulationErreur Signet non d fini input DC Y input couplingErreur Signet non d fini V DIV Vertical sensitivityErreur POSITION Signet non d fini POSITION Horizontal alignment Vertical alignment TimebaseErreur Signet non d fini Sweep speedErreur Signet non d fini TriggerErreur Signet non d fini Level LEVEL FIXED AUTO TraceErreur Signet non d fini Rotation TRACE setting ROTATE Erreur Signet non d fini Erreur Signet non d fini OX 71 9 Trace rotateErreur Signet non d fini front panel setting potentiometer accessed through 2 9 mm diameter hole OX 71 4 GETTING STARTED OX 71 amp Set the controls as follows 11 13 and 14 to mid travel latched to 1 ms div to 0 Hm 3 2 0 0 o 8 E Dipascore 71 mezelrix DO Gi QU amp Switch on
7. nt concerned is not greater than 400 Vrms 1 2 SafetyErreur Signet non d fini instructions Never open up the instrument without first disconnecting it from the mains supply and the measuring circuits Caution some internal capacitors may retain a hazardous potential for some time after the instrument has been switched off Any adjustment maintenance or repair of the oscilloscope when powered up should be carried out only by qualified personnel OX 71 1 3 Symbols Refer to the operating manual Risk of electric shock Measurement circuit ground cold point O y pp Double Insulation 1 4 Safety class You should be careful to observe certain input conditions where there is a total voltage VT made up of the observed input voltage V between cold point and hot point and the common mode voltage VCM between cold point and earth Hot point N VI Vr max Cold point 400 Vrms VCM Earth VT rms voltage between hot point and earth VI rms voltage applied between the cold point and the hot point of a measurement input of the oscilloscope Vcm Common mode rms voltage 6 OX 71 1 5 1 6 1 7 OX 71 WarrantyErreur Signet non d fini METRIX equipment is warranted against any defects of manufacture or materials for a period of one year from the date of delivery During this period 2 years defective parts will be replaced the manufacturer reserving the right to repair or replace the product
8. rreur Signet non d fini IEC 1010 1 Installation category II Common mode 7 6 Accessories Supplied with the OX 71 one user manual two 0 125 A slow blow ceramic fuses rectangular 140 mm diagonal 80 x 100 mm 1 8 kV average persistence GY phosphor focus adjustment intensity adjustment trace rotate 50 to 60 Hz 230 V 10 optionally 240 V 20W 0 125 A slow blow ceramic fuseErreur Signet non d fini on internal fuseholder 18 C to 28 C 10 to 40 C OC to 40 C 20 C to 70 C lt 80 RH at 40 C VDE 871 classErreur Signet non defini B IEC 801 3 level 3 180 x 330 x 430 mm 5 2 kg 300 x 480 x 710 mm 8 kg Double insulated Pollution rating 2 400 Vrms OX 71 8 INDEX OX 71 A Alignment Applications B Bandwith C Channel Class Controls Coupling CRT E Environnement F Focus Frequency Front panel Fuse Impedance Intensity P Power supply 11 12 8 13 11 6 14 9 11 13 14 S Safety Sensitivity Signal input Signals Specifications Starting up Sweep speed T Timebase Trace Trace rotate Trigger Trigger level Vertical deflection W Warranty X XY mode Z Z modulation 5 6 14 9 13 11 13 14 9 11 13 8 9 13 9 12 9 11 13 9 11 13 13 17 OX 71 OX 71 FRONT PANEL KEY 1 On off switch 9 Horizontal alignment Red 2 Input coupling 10 Vertical sensitivity Yellow 3 Channel Y Yellow 11 Vertical alignment
9. the METRIX and DIDASCOPE logotypes are registered METRIX reserves the right to modify the specifications and prices as required by technological improvements 2 DESCRIPTION OF THE INSTRUMENT All the circuits used feature very low dissipation The amplifiers offer very high stability through the use of integrated circuit technology The input is protected against voltages up to 400 Vrms with a high impedanceErreur Signet non d tini 1MQ 35 pF Input is via insulated sockets the metal parts cannot be touched by the user The 14 cm rectangular CRT has a usable area of 80 mm x 100 mm with an internal graticule The total acceleration voltage of 1 8 kV gives a very bright trace facilitating signal display even at very high sweep speeds The 0 to 5 MHz bandwidthErreur Signet non d fini means that most normal signals can be observed with a sensitivity of 50 mV div and an attenuation of up to 5 Vidiv The timebaseErreur Signet non d fini ranges from 0 5 s to 0 5 us per division with just one DC input coupling position The trigger system features a very high bandwidth and is effective even on very fast signal edges with a good sensitivity The X input when used in XY modeErreur Signet non d fini has a fixed sensitivity of 0 5 V div The unit stands on non skid feet In use the carrying handle folds back and doubles as a tilt stand without impeding access to the front panel controls The power supply cable is perma
10. tivityErreur Signet non d fini BandwidthErreur Signet gt 5 MHz On all ranges non d fini at 3 dB Rise time Rise time 70ns 70ns Input couplingErreur 5 Hz to 5 MHz Signet non d fini 0 Hz to 5 MHz 0 V reference Max input voltage Constant 400 Vrms E Y channel onl Alignment f 4dv 7 2 TimebaseErreur Signet non d fini ener Image E EATON eS Signet non d fini TE XY modeErreur Signet X axis bandwidth 3 dB non d fini DC coupling 0 Hz to kHz min 7 3 TriggerErreur Signet non d fini system SPECIFICATION REMARKS Channel Y Normal trigger sensitivity 0 5dv 5Hz to 2 5 MHz 1div 2 5 MHz to 5 MHz AC links Normal trigger variable threshold Triggered mode amplitude affect trigger level 7 4 X and Z inputs Impedance 1 1 35 pF approx 1 1 35 pF approx OX 71 400 Vrms 400 Vrms Commandsignallevel TL OX 71 15 7 5 General specificationsErreur Signet non d fini CRTErreur Signet non d fini Type Graticule Acceleration voltage Screen Trace Power supplyErreur Signet non d fini Frequency Mains voltage Consumption Protection EnvironmentErreur Signet non d fini Reference domain Rated range of use Operating limits Storage temperature range Relative humidity Electromagnetic compatibility Interference Susceptibility Mechanical Dimensions Weight Packaging Dimensions Weight SafetyE
11. trigger signal Erreur Signet non d fini OX 71 6 APPLICATIONSErreur Signet non d fini 6 1 Single traceErreur Signet non d fini mode Determine the input coupling mode DC or AC 2 amp Select the appropriate vertical sensitivity 10 for the signal Apply the signal to be observed to the Y input via two leads terminated with banana plugs a coaxial lead terminated with a banana plug Align the trace 9 and 11 Select the appropriate sweep speed for the signal 6 6 2 XY mode This mode is used to observe Lissajous curves and orthogonal coordinate graphs amp Select the XY mode control 6 the timebase is now disabled Determine the input coupling mode 2 Apply the signal for the X axis to the X input 5 and the signal for the Y axis to the Y input 3 amp Adjust vertical sensitivity 10 Align horizontally and vertically by adjusting 9 and 11 In XY mode the bandwidth of channel X is at least 100 kHz OX 71 13 7 TECHNICAL SPECIFICATIONS Only values assigned tolerances or limits are guaranteed values Values without tolerances are given for information only Erreur Signet non d fini Erreur Signet non d fini 7 1 Vertical deflection SPECIFICATION REMARKS Input impedanceErreur 1 1 35 pF approx Signet non d tini Vertical deflectionErreur Ranges 7 positions Signet non d fini factor 0 05 V div to 5 V div 5 1 2 5 sequence sensi
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