Hameg HM404-2.02 Manual
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Hameg HM404-2.02 Manual

Hameg HM404-2.02 Manual

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Instruments
Oscilloscope
HM404-
2.
02
H A N D B U C H • M A N U A L • M A N U E L

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Summary of Contents for Hameg HM404-2.02

  • Page 1 ® Instruments Oscilloscope HM404- H A N D B U C H • M A N U A L • M A N U E L...
  • Page 2 M A N U A L • H A N D B U C H • M A N U E L...

  • Page 3: Table Of Contents

    Table of contents General information regarding the CE marking .... 4 General Information ............6 Symbols ................. 6 Use of tilt handle ............6 Oscilloscope Safety ................6 Intended purpose and operating conditions ....6 EMC ................7 HM404- Warranty ................. 7 Maintenance ..............

  • Page 4: General Information Regarding The Ce Marking

    General information regarding the CE marking HAMEG instruments fulfill the regulations of the EMC directive. The conformity test made by HAMEG is based on the actual generic- and product standards. In cases where different limit values are applicable, HAMEG applies the severer standard. For emission the limits for residential, commercial and light industry are applied.
  • Page 5 Furthermore, the built in component tester and the 1kHz/1MHz calibrator are standard Readout: Display of parameter settings equipment for this class of HAMEG scopes. ∆V, ∆t or ∆1/t (frequ.) Cursor measurement: The instrument may be remotely controlled by any personal computer via its built- Component Tester in serial interface.

  • Page 6: General Information

    General Information General Information be followed by the user to ensure safe operation and to retain the oscilloscope in a safe condition. This oscilloscope is easy to operate. The logical arrangement of the controls allows anyone to quickly become familiar with The case, chassis and all measuring terminals are connected the operation of the instrument, however, experienced users to the protective earth contact of the appliance inlet.

  • Page 7: Emc

    Purchase of the should be kept in a clean and dry room and must not be HAMEG scope tester HZ60, which despite its low price is operated in explosive, corrosive, dusty, or moist environments.

  • Page 8: Type Of Signal Voltage

    Type of signal voltage Type of signal voltage peak-to-peak value must be divided by 2x√2 = 2.83. Conversely, it should be observed that sinusoidal voltages indicated in The oscilloscope HM404 allows examination of DC voltages Vrms (Veff) have 2.83 times the potential difference in Vpp. and most repetitive signals in the frequency range up to at The relationship between the different voltage magnitudes least 40MHz (-3dB).

  • Page 9: Total Value Of Input Voltage

    T = time in seconds for one period, F = recurrence frequency in Hz of the signal, With the above listed exceptions HAMEG 10:1 probes can be Tc = time coefficient in ms, µs or ns/div and the relation used for DC measurements up to 600V or AC voltages (with F = 1/T, the following equations can be stated: a mean value of zero volt) of 1200Vpp.

  • Page 10: Connection Of Test Signal

    Type of signal voltage = √ t required rec. freq. F = 1:(0.7x10 -6 ) = 1.428MHz. tot 2 osc 2 Signal period T = 1s, set time coefficient Tc = 0.2s/div, In this t tot is the total measured risetime, t osc is the risetime required wavelength L = 1:0.2 = 5div.

  • Page 11: Controls And Readout

    HZ51 (x10) HZ52 (x10 HF) and HZ54 (x1 and x10). This The large front panel is, as is usual with Hameg oscilloscopes, can save the purchase of an oscilloscope with larger bandwidth.
  • Page 12 Controls and Readout by the signal‘s pulse duty factor. can be used by the operator to save instrument settings and to recall them. This relates to all settings with the In DUAL mode the CURSOR lines are related to the signal exception of FOCUS, TR (trace rotation) and the calibrator which is used for internal triggering.
  • Page 13 Controls and Readout After switching GD (ground) off and selecting DC input Press and hold the pushbutton to switch over from coupling, a DC signal applied at the input changes the automatic (peak value) to normal triggering (NM-LED trace position in vertical direction. The DC voltage then above the pushbutton lit) and vice versa.
  • Page 14 Controls and Readout All channel I related controls are active if the input (26) is not set to GD (28). VAR.: Pressing and holding this pushbutton selects the VOLTS/ DIV. (15) control knob function between attenuator and vernier (variable). The current setting is displayed by the VAR-LED located above the knob.
  • Page 15 Controls and Readout Please note ”Operating modes of the vertical amplifiers delayed (DEL and DTR) time base mode, in Yt mode”. TVL, TVF and line (mains) trigger coupling. The readout indicates this mode by a ”+” sign located between both channel deflection coefficients. While the trigger mode is not affected, the trigger point symbol is switched off.
  • Page 16 Controls and Readout setting will not be stored. (23)TIME/DIV. The time base is set with this rotary knob in the TIME/ The CHII pushbutton can also be pressed simultaneously DIV. field, and the setting is displayed at the top left in with the DUAL (17) button.
  • Page 17 Controls and Readout edge without blanking. The start of the section, which operated. The readout now indicates ”T>...” instead of was previously unblanked in the ”SEA” (SEARCH) mode, ”T:...”. Rotating further anticlockwise increases the time now lies at the left edge. The display can be expanded in deflection coefficient (uncalibrated) until the maximum the X direction by rotating the TIME/DIV control is reached indicated by a beep.
  • Page 18 0 Volt trace position. If “PRESS SECURITY KEY!” is displayed, this function is available only for HAMEG authorized service workshops. The ”0 Volt” position is indicated by a ”” symbol in the Press AUTOSET (3) to switch back to the menu.
  • Page 19 Controls and Readout ∆ ∆ ∆ ∆ ∆ V / ∆ ∆ ∆ ∆ ∆ t: note section "Mean Value Display". Pressing and holding this pushbutton changes from voltage CHI/II: to time (or frequency) measurement and vice versa. In XY mode the instrument is automatically set to ∆V. This function is required and available only in DUAL and XY mode in combination with ∆...

  • Page 20: Menu

    The oscilloscope is switched on by depressing the red POWER ”FACTORY”. pushbutton. After a few seconds the HAMEG logo and the instrument software release is displayed on the screen. As 1.2.1 MISCELLANEOUS contains: long as the HAMEG logo is visible different internal checks are Subject to change without notice...

  • Page 21: Trace Rotation Tr

    First Time Operation Adjustment at 1kHz made. Thereafter the instrument will revert to its last used operating mode. The C-trimmer adjustment (low frequency) compensates the If after approx. 20 seconds no trace is visible, the AUTO SET capacitive loading on the oscilloscope input. By this adjustment, pushbutton should be pressed briefly.

  • Page 22: Operating Modes Of The Vertical Amplifiers In Yt Mode

    Operating modes of the vertical amplifiers in Yt mode have to be adjusted such that the beginning of the pulse is as Single channel operation of channel II (Mono CH II). straight as possible. Overshoot or excessive rounding are Two channel operation of channel I and channel II (DUAL). unacceptable.

  • Page 23: Phase Comparison With Lissajous Figures

    Operating modes of the vertical amplifiers in Yt mode Phase comparison between two signals of the same coefficients and the trigger level setting can be used for this frequency. adjustment, without influence on the result. Both base lines are set onto the horizontal graticule center line using the Y- Phase comparison with Lissajous figures POS.

  • Page 24: Triggering And Timebase

    Triggering and timebase The trigger voltage should have a certain minimum amplitude. This value is called the trigger threshold. It is measured with a sine signal. Except when external trigger is used the trigger threshold can be stated as vertical display height in div, at which the time base generator starts, the display is stable, and the trigger indicator LED lights or flashes.

  • Page 25: Slope

    Triggering and timebase refers to the XY mode. In this coupling mode the trigger signal is coupled galvanically to the trigger unit if normal triggering (NM) With normal triggering, the sweep can be started by AC is present. Therefore there is no low frequency limit. signals within the frequency range defined by the trigger coupling setting.

  • Page 26: Line Triggering (~)

    Triggering and timebase expanded with the knob TIME/DIV. But note that this can no shorted turns are permissible. Maximum, minimum, and result in an apparently unsynchronized display as each frame direction to the magnetic source are detectable at the (half picture) triggers. This is due to the off set of half a line measuring point by turning and shifting the coil.

  • Page 27: Trigger Indicator "Tr

    Triggering and timebase Trigger indicator ”TR” The following description applies to the ”TR” LED. Please note item (11) under ”Controls and Readout”. An LED on condition indicates that the trigger signal has a sufficient amplitude and the trigger level control setting is correct.
  • Page 28 Triggering and Timebase Photo 1 Photo 3 (composite video signal) MODE: DEL (DELAY) MODE: undelayed TIME/DIV: 5ms/div TIME/DIV: 5ms/div Trigger coupling: TV-F Trigger coupling: TV-F Trigger slope: falling ( - ) Trigger slope: falling ( - ) Delay time: 20ms Pressing and holding the SEA./DEL.

  • Page 29: Auto Set

    Auto Set Mean Value Display Attention: Attention! In combination of chopped DUAL mode and high ex- If a signal is applied with a pulse duty factor of approx. pansion ratios in DELAY mode, chop interference may 400:1 or larger, an automatic signal display can not be be visible.

  • Page 30: Component Tester

    Component Tester Component Tester from a resistor is therefore a sloping straight line. The angle of slope is determined by the resistance of the resistor under General test. With high values of resistance, the slope will tend towards the horizontal axis, and with low values, the slope will The instrument specific information regarding the control and move towards the vertical axis.

  • Page 31: Testing Transistors

    Adjustments The polarity of an unknown diode can be identified by comparison with a known diode. Testing Transistors Three different tests can be made to transistors: base- emitter, base-collector and emitter-collector. The resulting test patterns are shown below. The basic equivalent circuit of a transistor is a Z-diode between base and emitter and a normal diode with reverse polarity between base and collector in series connection.

  • Page 32: Rs232 Interface - Remote Control

    = 2x(1/baud rate) + 60µs. In case of disregard of the safety warnings contained in this manual, HAMEG refuses any liability regarding personal injury If at the beginning no SPACE CR command is recognizable, and/or damage of equipment.

  • Page 33: Front Panel Hm404-2

    Front Panel HM404- Subject to change without notice...
  • Page 34 Subject to change without notice...
  • Page 35 M A N U A L • H A N D B U C H • M A N U E L...
  • Page 36 ® Germany HAMEG GmbH Instruments Industriestraße 6 63533 Mainhausen Tel. (06182) 8909 - 0 Telefax (06182) 8909 - 30 Oscilloscopes E-mail: sales@hameg.de HAMEG Service Multimeters Kelsterbacher Str. 15-19 60528 FRANKFURT am Main Tel. (069) 67805 - 24 Telefax (069) 67805 - 31...

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