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Summary of Contents for HM 205

Page 1: ...rFAPMic fc Instruments MANUAL Oscilloscope HM 205...

Page 2: ...12 Calibration of the Vertical Amplifier 2 2 T 1 Normal Triggering Slope M13 Transmission Performance Vertical Amplifier T 2 Triggercoupling 0 4 M13 Operating Modes CHI Il DUAL ADD CHOP Line Triggerin...

Page 3: ...0 240V Permissible line fluctuation 10 Line frequency range 50 60 400Hz Power consumption approx 42 Watt Protective system Safety Class IEC 348 Safety Class II optional Weight approx 7 7 kg color tech...

Page 4: ...ctable 1 1 10 11 1 10 1 10 100 35 3 5 47 13 1 10 1 600 1 5 10 150 20 3 2 44 13 1 10 600 132 1000 1 1 50 3 500 1 10 15000 1 5 Test Cable Banana BNC _ T HZ32 Coaxial test cable length 1 15m characterist...

Page 5: ...l measuring terminals are connected to the protective earth contact of the appliance inlet The instrument operates ac cording to Safety Class I three conductor power cord with protective earthing cond...

Page 6: ...one number dialing code and telephone or direct number or department designation is stated for possible queries this helps towards speeding up the processing of guarantee claims Maintenance Various im...

Page 7: ...the display will move upwards or down wards at each change Pure direct voltages can only be measured with DC coupling Amplitude Measurements In general electrical engineering alternating voltage data...

Page 8: ...ator probe is used for voltages higher than 400V see page M5 Connection of Test Signal Reference Line With Y POS control input coupling to GD it is possible to set a horizontal graticule line as refer...

Page 9: ...sients ramp offs and bandwidth limits do not unduly infiuence the measuring accuracy the risetime s generally measured between 10 and 90 of the vertical pulse height For peak to peak signal amplitude...

Page 10: ...nce is some times recommended with sine signals as well Certain amplifiers generators or their attenuators maintain the nominal output voltage independent of frequency only if their connection cable i...

Page 11: ...eriod of 10seconds Adjust Y POS and X POS controls to center the baseline Adjust INTENS intensity and FOCUS controls for medium brightness and optimum sharpness of the trace The oscillo scope is now r...

Page 12: ...generator built into the HM 205 supplies a square wave signal for this purpose with very short rise time 5 ns at 1 kHz or 1 MHz frequency selected by pushbutton The square wave signal can be taken fr...

Page 13: ...r probe hold cap unscrew cable strain relief union nut withdraw insulating cap from the BNC plug screw back union nut with cable One slotted trimmer screw is visible with the types HZ37 HZ51 and HZ54...

Page 14: ...22 is con nected directly between the BNC plug output of the probe and the Y input of the oscilloscope Operating modes of the vertical amplifiers The desired operating mode of the vertical amplifiers...

Page 15: ...lloscope can help here The 1 MQ input resistance can equally serve as R here so that only a suitable capacitor C needs to be connected in series Ifthe aper ture width of the ellipse is increased compa...

Page 16: ...external triggering Ifthe two values a and bare read from the screen the mod ulation factor is calculated from a b a b _ 100 a b bzw m atb where a U 1 m and b U 1 m The variable controls for amplitud...

Page 17: ...hereinafter mentioned Slope The trigger point can be placed alternatively on a rising or fal ling edge of the test signal This is valid with automatic and with normal triggering The selected slope is...

Page 18: ...id for line and frame fre quency An incorrectly set slope results in an unstable dis play The trigger slope cannot be changed using the INVERT buttons The button relates always to the input signal Vid...

Page 19: ...y turned to the right until one signal is displayed A double display is possible with certain pulse signals where the pulses alternately show a small difference of the peak amplitudes Only a very exac...

Page 20: ...move towards the vertical axis Values of resistance from 20Q to 4 7kQ can be approxi mately evaluated The determination of actual values will come with experience or by direct comparison with a com po...

Page 21: ...cket connection CT or ground for the same terminal is then absolutely necessary Aconnection inversion effects a rotation of the test pattern by 180 degrees round about the center point of the scope gr...

Page 22: ...33 pF Junction E C FET Single Diodes In circuit Semiconductors Z diode under 8V Z2 diode beyond 12V Diode paralleled by 680 2 2 Diodes antiparaltel Silicon diode Germanium diode Diode in series with...

Page 23: ...maximum 0 1 MHz the smallest adjustable time coefficient is 1ms cm the largest 5s em These ranges are framed in black on the TIME DIV scale Storage resolution and operating modes Vertical resolution D...

Page 24: ...with very low frequencies Select trigger edge direction slope with button Timebase select time coefficients on the TIME DIV switch however remain within the black framed scale reg ion The signal is v...

Page 25: ...ne them up to a horizontal graticule line Automatic triggering is required for this do not depress AT NORM SINGLE and HOLD buttons set 1ms em In addition the input coupling switch or switches are set...

Page 26: ...he first forward sweep the sweep stops the generator Single sweep the single sweep mode is on when the SINGLE and the RESET buttons are depressed There are no qualitative or quantitative disadvantages...

Page 27: ...arallel to the Z connector with out any power source contactclosed 4 dark trace contactopen 4 bright trace This facility simplifies for instance contact time measure ments and chatter tests on switche...

Page 28: ...th frame or vertical frequency TV SEP switch to TV V Select edge direction with button sync pulse above below Pay attention to trigger indicator LED near to TRIG selector switch Storage mode Mode sele...

Page 29: ...g DC AC GD slide switch 9 CH I li TRIG I II pushbutton switch DUAL pushbutton switch CHOP pushbutton switch 3 VOLTS DIV rotary switch ADD 63 VAR GAIN center knob DC AC GD slide switch 68 CH I BNC conn...

Page 30: ...Hi FAME 6G 20M z Oscilloscope HM205 5 2 5 2...

Page 31: ...undeflected spot position the non linear ity and the raster distortion in the marginal zone of the screen in accordance with international standards see CRT data book These limit values are strictly...

Page 32: ...itions of the input attenuators and readjust them as necessary A compensated 2 1 series attenuator e g HZ23 is also necessary and this must be matched to the input impedance of the oscilloscope This a...

Page 33: ...stment on the input of the vertical amplifier see Operating Instructions page M8 if both vertical inputs are AC coupled to the same signal and both traces are brought to coincide exactly on the screen...

Page 34: ...the CT button a horizontal straight line has to appear immediately when the CT socket is open The length of this trace should be approx 8em With connection of the CT socket to one of the ground jacks...

Page 35: ...nt is disconnected from all voltage sources Normally the capacitors are discharged 6 sec onds after switching off However with a defective instrument an interruption of the load is not impossi ble The...

Page 36: ...y of signal or ripple voltages As noted before the regulated high voltage and the supply voltage for the final stages are highly dangerous Therefore it is recommended to use totally insulated extended...

Page 37: ...ends of the wires must be pushed through the holes in the respective soldering tab bent over with a pair of pliers and subsequently fixed by soldering The minimum cross section of the protective eart...

Page 38: ...67 60 17 Telex 4 13 866 France HAMEG S a r 1 5 9 av de la R publique 94800 VILLEJUIF T l 1 46 77 81 51 T lex 270 705 Spain HAMEG S A Villarroel 172 174 08036 BARCELONA Tel f 93 230 15 97 Great Britain...

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