Hameg HM 604 Manual Download Page 37 | Manualshive

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Summary of Contents for HM 604

Page 1: ...er Distortions T 1 Astigmatismus Check T 1 Symmetry and Drift of thevertical Amplifier T 1 Calibration of the Vertical Amplifier T 1 Transmission Performance of the Vertical Amplifier T 2 Operating Mo...

Page 2: ...1 kHz to 1 MHz t approx 3ns Output voltage 0 2V and 2V fl Protective system Safety Class I IEC 348 Linevoltage 110 125 220 24OV IO Line frequency 50 to 60Hz Power consumption 40 Watt Weight approx 8kg...

Page 3: ...MQ switchable Attenuation ratio 1000 1 Bandwidth 1 MHz Cable length 1 5 m BNC connector Test Cable Banana BNC HZ32 Coaxial test cable length 1 15 m characteristic impedance 5Ofi Cable capacitance 12Op...

Page 4: ...tact of the appliance inlet The instrument operates ac cording to Safety C ass I three conductor power cord with protective earthing conductor and a plug with earthing con tact The mains line plug sha...

Page 5: ...g fluid get into the instrument The use of other cleaning agents can attack the plastic and paint surfaces Switching over the mains line voltage The specifications stating tolerances are only valid if...

Page 6: ...voltage data normally refers to effective values rms root mean square value However for signal magnitudes and voltage designations in oscilloscope measurements the peak to peakvoltage V value is appl...

Page 7: ...t D 62 2 3 2 19 4V cm min deflection coefficient D 62 2 8 7 8V cm adjusted deflection coefficient D lOV cm If the applied signal is superimposed on a DC direct voltage level the total value DC peak va...

Page 8: ...r line Adjust the Y at tenuator switch with its variable control together with the Y POS control so that the pulse height is precisely aligned with the 0 and 100 lines The 10 and 90 points of the sign...

Page 9: ...the ground point on the test circuit can be critical This ground point should al ways be located as close as possible to the measuring point If this is not done serious signal deformation may result f...

Page 10: ...leased out position If the trace is not visible check the correct positions of all knobs and switches particularly LEVEL knob in AT position and DELAY MODE lever switch to OFF To obtain the maximum li...

Page 11: ...adjusted slowly until the tops of the squarewave signal are exactly parallel to the horizontal graticule lines See Fig above for 1 kHz The signal amplitude shown should be 4cm 1 2 mm 3 During this adj...

Page 12: ...rticular importance Providing these essential features as well as switch select able output frequencies the calibrator of the HM 604 can under certain conditions replace expensive squarewave generator...

Page 13: ...e fluorescent screen of the CRT For X Yoperation the pushbutton in the X Section marked X Y must be depressed The X signal is then derived from the Channe HOR INP The calibration ofthexsignal during X...

Page 14: ...ude modulated oscillation F 1 MHz f 1 kHz m 50 UT 28 3 mVrms Oscilloscope setting for a signal according to figure 2 Depress no buttons Y CH I 20mV div AC TIM E DIV 0 2 ms div Triggering NORMAL with L...

Page 15: ...s a display below the internal trigger threshold Line triggering is recommended for all signals which are time re lated multiple or submultiple to the mains line frequency or when it is desirable to p...

Page 16: ...again after delay provided there is another suitable edge DEL TRIG In DEL TRIG mode andN SEP switch in H or V position after delay triggering to the next following line is possible Therefore discrete...

Page 17: ...increased the trace will tend to shift If this happens the VAR delay time control can be readjusted also sub sequently at any time to enable the exact point of interest to be displayed In the example...

Page 18: ...d without any restriction Using the Component Tester The CT is switched on by depressing the COMPONENT TESTER pushbutton This makes the vertical preamplifier and the timebase generator inoperative A s...

Page 19: ...x 8 5V all sections of most semiconductors can be tested without damage However checking the breakdown or reverse voltage of high voltage semiconductors is not possible More important is testing compo...

Page 20: ...cuit which is not defective The test patterns on page M 18 show some typical displays for in circuit tests Miscellaneous A posifive going sawtooth voltage of approximately SV coincident with display s...

Page 21: ...citor 33 vF Z diode under 8V Z diode beyond 12V Silicon diode Germanium diode Rectifier Thyristor G A together Junction E C FET In circuit Semiconductors Diode paralleled by 6800 2 Diodes antiparallel...

Page 22: ...ring TRIG selector switch in N position Trigger coupling selected with TRIG switch AC DC LF HF Trig freq range AC and DC to 20 MHz HF above 20 MHz LF below 50 kHz Video signals with line freq TV SEP s...

Page 23: ...G The selection of a cathode ray tube without any tolerances is practically impossible Astigmatism Check Check whether the horizontal and vertical sharpness of the display are equal This is best seen...

Page 24: ...n coefficients on all positions of the input attenuators and readjust them as necessary A compen sated 2 1 series attenuator is also necessary and this must be matched to the input impedance of the os...

Page 25: ...e visible If both vertical inputs are AC coupled to the same signal and both traces are brought to coincide exactly on the screen when working in the alternate dual channel mode then no change in disp...

Page 26: ...l the nearest edge of the calibration signal can be brought in the screen center and checked on the above mentioned criteria With x200 expansion the display brightness nor mally needs increasing with...

Page 27: ...4cm SOmV cm the Y output can be calculated as 2 modulation optional Checking the blanking facility on the 2 modulation connec tor rear panel is possible with a sine or square wave generator The sine w...

Page 28: ...mally the capacitors are discharged 6 sec onds after switching ofi However with a defective instrument an interruption of the load is possible Therefore atter switching off it is recommended to con ne...

Page 29: ...y deviations of the specified data or func tions The HAMEG Service Department can give you advice for troubleshooting and replaceable parts Replacement parts can be ordered by letter or telephone from...

Page 30: ...e safety earth pin via long sold tab to rear chassis Safety Class I Plug with earthing contact I bk II 1 _ 2 tl J 2 gr Pushbutton power switch 4At24A _ 250v see diagram POWER SUPPLY Adjustments As adv...

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