HAMEG. OSCILLOSCOPE HM Specification. TLOPL HH4E. Vertical Deflection (Y). Bandwidth: of both channels. DC MHz (-3dB), DC MHz (- 6dB). HM analog oscilloscope. Discontinued. More info in German for HM at ยท Manual for HM here. Timebase The HM timebase incorporates an LPS trigger circuit, a new technique developed by HAMEG. The complete triggering process is carried out by a.

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Greater misalignments can only be corrected when the in- strument is open and the TR-pot is set in midrange. The trimmer can be adjusted to equal the input capacitance of the oscilloscope, then the impedance of the HZ 23 is equal to the specified Input impedance of the oscilloscope under test. This mode is par- ticularly useful when asynchronous signals are being investigated.

HAMEG hm 412 Oszilloskop Oscilloscope

In thexl position the cable capacity will act as hsmeg load on a high impedance source, however the maximum sensitivity of the oscilloscope can be fully utilized.

Any reduction of this brightness can only be judged visually. The case is manufactured from a hard wearing material.

With composite signals, the trigger facility is dependent on the occurence of certain periodically recurring levels. Operating Conditions Admissible ambient temperature range during opera- tion: In the X-Y mode the horizontal signal is derived from channel II so that both hame horizontal and vertical channels have the same input impedance and sensitivity range.

For external triggering in the “DC” coupling mode, signal voltages of approx.

HAMEG hm Oszilloskop Oscilloscope | eBay

Then the associated attenuator switch has to be set to a greater deflection coefficient. In almost any case, the faulty section can be located. According to experience, this is rarely necessary. The risetime is given by the product of the horizontal distance in cm between these two points and the time coefficient setting.

The sum of the two channels is displayed in the Add Mode, if channel I is then inverted a differential display is obtained. If repositioning of the CRT is required the procedure described in the Service Instructions should be followed. All push buttons should be in the “out” position.


Also the precise measure- ment for the delayed portion of the waveform is possible. In the alternate mode the unblanking pulse from the sweep generator is used as the control signal, while a 1 MHz signal is used in the chop mode. The use of these screened cables with high impedance circuits is only recommended For the representation of two signals in the differential-mode, you require two attenuator probes which are absolutely equal in impedance and at- tenuation.

Do not try to trigger the chop frequency 1MHz. The input attenuators, located in the front of the amplifier, are frequency-compensated in each posi- tion. The HZ 22 should not be employed when a compen- j sated attenuator probe is used.

For cor- rect operation the probe must be terminated by 1 Megohm oscilloscope input resistance with DC coupling.

Oszilloskop HM Equipment HAMEG GmbH, Frankfurt, build

In the “GD” position any signal applied to the vertical inputs is not shorted, therefore preventing damage to the circuit under in- vestigation. On dual channel operation the internal trigger signal may be selected from either Channel I or Channel II, however, it is preferable to trigger from the less com- plicated signal.

Therefore, all HAMEG instruments are under warran- ty for a period of one year, provided that no modifica- tions have been made to the instrument. Overall dimensions are approx. If, for example, the complex video signal of a television receiver is to be displayed at frame fre- M7 delay setting of lOnns.

If this is so, it should be released. Operating Modes The HM may be operated as either a single or dual trace oscilloscope. The adjust- ments must possibly be repeated because the func- tions of both variable resistors are dependent on each other. At lower sweep speeds far greater magnification is possible.

Operation of the Sweep Delay needs some ex- perience, particularly with composite signals. This earthed wire is only connected to the first protective winding of the power transformer. The “AC” position can be used for the investigation of most uncomplicated waveforms, while “DC” coupling pushbutton depressed is recommended when very low frequen- cy signals are being investigated.


hameh Maintenance Within the context of maintenance, it is recommend- ed that the important characteristics of the HM are periodically checked. The Sweep Delay hakeg can be used with the HM41 2 in either single or dual trace operating mode. However, this combination of BNC- 4 mm can be used for many other applications. Transmission Performance of the Vertical Amplifier The transient response and the phase compensation can only be checked with the aid of a square-wave generator with a fast risetime max.

When the Sweep Delay mode slide switch is set to the “norm. For RF suppres- sion the output signal is derived via a low-pass filter. Blanking or modulation of the trace is possible with low level TTL voltages which can be applied to a BNC connector mounted on the rear panel of the instru- ment. It should be noted that this value is reduced at higher frequencies. This unit contains the three-pin power connector.

It also con- tains a compartment which can be used for accessories and tools. In the dual trace mode two waveforms differing in time and amplitude can be displayed conse- cutively Alternate Mode or by multiple switching of the channels during one sweep period Chop Mode.

Hameg 412 Grossansichten

At the same time, the top corner of the hwmeg must not be round- ed. The load resistance should not be less than lOkQ. In this mode the delay fine control can be operated and a displayed wave- -form should be shifted without any jitter, jumping or intermittent blanking.

bameg As with the First Time Operation Instructions care should be taken that all knobs with arrows are set to their calibrated position “LEVEL” control to “AT”and that the delay mode switch is set to “norm. For the measurement of the high voltage ripple you need a probe capable to withstand V e.

Input ca- pacitance approx.