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Hameg HM 103-2, Manual

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Summary of Contents for HM 103-2

Page 1: ...Instruments...

Page 2: ...se T 3 X Y Operation T 3 Component Tester T 3 Trace Alignment T 3 Power Voltage Fluctuations T 3 Service instructions General SI Mains Line Voltage Change SI Instrument Case Removal SI Operating Volta...

Page 3: ...Weight approx 3 7 kg Cabinet mm W 212 H 1 14 D 280 Colour techno brown Lockable tilt handle Subject to change Test Displays using the Component Tester Transistor Diode 10 MHz Compact Oscilloscope 1 C...

Page 4: ...ding peak AC Cable length 1 2m High Voltage Probe HZ58 For measurement of voltages up to 15kVpp Input resistance approx 500mQ Recommended load resistance MQ 10MQ switchable Attenuation ratio 1000 1 Ba...

Page 5: ...ate 200ns div one cycle will be displayed every O Bdiv The tolerance on indicated values amounts to 3 in the vertical and 5 in the horizontal deflection direction Ail values to be mea sured can theref...

Page 6: ...nto operation in explosive corrosive dusty or moist environments The instrument may be operated in any position however the convection cooling must not be impaired Therefore when the instrument is in...

Page 7: ...oscope by depressing the red POWER pushbutton An LED will illuminate to indicate the working order The trace displaying a baseline should be visible after a short warm up period of 30 seconds Adjust Y...

Page 8: ...mended for the display of logic and pulse signals particularly if their pulse duty factor changes perma nently during operation Otherwise the display will move up and down with any change DC voltages...

Page 9: ...see page M6 Connection of Test Signal With input coupling switched to GD and with the Y POS control a horizontal graticule line can be adjusted as a refer ence axis for ground potential It can be pla...

Page 10: ...ferent set tings for the displayed pulse amplitude are possible Note All settings in the Y Section do not affect the time measure t V f 2 _ 4 2 r tot osc In this ttot is the total measured risetime lo...

Page 11: ...hould be made by a shielded cable with BNC male connector at one end A resistor of approx 1 00 Q should be connected in series be tween cable core and connector core This resistor at tenuates radio fr...

Page 12: ...ustment of these signals will require some care If it is found that a trigger point cannot be located on ex tremely complex signals even after repeated and careful ad justment of the LEVEL control in...

Page 13: ...ircuit is shown by a straight vertical line Testing Resistors If the test object has a linear ohmic resistance both deflect ing voltages are in the same phase The test pattern ex pected from a resisto...

Page 14: ...o the usual caution with single MOS components relating to static charge or frictional elec tricity In Circuit Tests Caution During in circuit tests make sure the circuit is dead No power from mains l...

Page 15: ...ors Resistor 51 OQ Junction B C Junction B E Capacitor 33 Junction E C FET In circuit Semiconductors Z diode beyond 12 V Diode paraiieled by 680 Q 2 Diodes antiparaliel Germanium diode Thyristor G A t...

Page 16: ...TR CAL m iMTENS o FOCUS O 0 2 V l l nEC3 OSCILLOSCOPE HM 103 2...

Page 17: ...Vpp time related to vertical input signal The coupling mode for internal and external triggering is always AC coupled Composite video triggered at frame rate TV button depressed Use Normal Triggering...

Page 18: ...e without any tolerances is practically impossible Astigmatism Check Check whether the horizontal and vertical sharpness of the display are equal This is best seen by displaying a square wave signal w...

Page 19: ...ed For local manufacture the elec trical components required are a 1 MQ 1 resistor and in parallel with it a trimmer 3 1 5 pF in parallel with approx 20 pF One side of this parallel circuit is connect...

Page 20: ...e cycles at least every 2div should be displayed measurement in the 50 s div range X Y Operation The deflection coefficient of the horizontal amplifier is approximately 0 45Vpp div This value can be c...

Page 21: ...is unavoidable this work must be done by a specialist who is familiar with the risk involved When the instrumentis set into operation after the case has been removed attention must be paid to the acce...

Page 22: ...ht It is strongly dependent on the 71 OCN comparator 1C If there are compelling reasons to replace this comparator it may be that triggering becomes too sen sitive or too insensitive caused by the 1C...

Page 23: ...neck of tube This deviation can be eliminated by inserting an additional resistor 680 Q 0 25 W between trace rotation coil terminal TR 1 and either F 1 2 V or 1 2 V stop terminals on the TR pot Such...

Page 24: ...lation has been established may further function tests with open chassis follow but with appropriate precaution ary measures Adjustments As advised in the Operating Test and Service Instructions small...

Page 25: ...Basic Block Diagram HM 1 03 2...

Page 26: ...Power Supply CRT and Unblanking Circuit Calibrator Trace Rotation HM 103 2...

Page 27: ...Y input Attenuator Y Preamplifier and Trigger Pick Off HM 1 03 2 Anderungen vorbehalten Subject to change without notice S23 4 91...

Page 28: ...ent Side HM103 2 Component Locations YIBoard HM 103 2 Y Final Amplifier HM 1 03 2 Component Locations Y Final Amp HM 103 2 Section of the Main Board nearby rear chassis S24 4 91 Ar derung n vorbehalte...

Page 29: ...Trigger Circuit Comparator Timebase Sweep and X Amplifier X Final Amp CT Y Preamp HM 103 2 Anderungen vorbehalten Subject to change without notice S25 4 91...

Page 30: ...fo TB Pcgd to CN 00 liD VR7W Ik 5 1 Jl B...

Page 31: ...fc Q n o i o 1 0 O O CD D D D C CC C O CO ti c 2 C D O u t o c 2 2 _ 2 CD w P I H N CL _J H Q _ cc Z CC Ij CQCJOCJUQuJLLy_l_lCECO QC o oc H N H S o M j r o 0 c r E c 0 ci c O 2 c 0 C 1 i S n 5 E u _ _...

Page 32: ...Adjusting Plan HM 1 03 2 A1 4 91 Anderungen vorbehalten Subject to change without notice...

Page 33: ...Signal Generators Spain HAMEG S A Villarroel 172 174 08036 BARCELONA Telef 93 430 1 597 430 1 1 00 Telex 99816 Telefax 93 321 2201 Check Point Testers Primed in Germany Great Britain HAMEG LTD 74 78 C...

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