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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Voltages of up to approximately 3,Vpp may be measured by using the HZ37 high voltage probe which has an attenuation ratio of In addition, switching the oscilloscope off and on at short intervals stresses the cathode of the CRT and should therefore be avoided. The optimum setting is dependent on the camera used. The trimmer can be adjusted to equal the input capacitance of hamge oscilloscope, then the impedance of the HZ 23 is equal to the specified Input impedance of the oscilloscope under test.
This can be easily achieved as the HM has a built-in square-wave generator with a repetition frequency of approx. This unit contains the three-pin power connector. An alternative method is to check the shape of the spot with both vertical inputs switched to the “GD” posi- tion and the “Hor. A criterion in chopped operation is trace widening and shadow- ing around and within the two traces in the upper or lower region of the hameh.
SI nately tightened turn by turn, otherwise the CRT might be misaligned again. The input attenuators, located in the front of the amplifier, are frequency-compensated in each posi- tion.
Oszilloskop HM Equipment HAMEG GmbH, Frankfurt, build
Nevertheless, a compo- nent may only fail after a longer period of operation. In contrast the minimum signal voltage required for reliable triggering should be at least double when the 1 kHz calibration signal is applied.

Sweep Delay Ranges 7 decade steps, ns – 1 s with fine control, ratio 10 ; 1. In the case of complete overscan both LED’s are illuminated. In the example shown it can Delay Mode Indication Both operating modes of the Sweep Delay are in- dicated with an LED, located to the left of the delay mode slide switch.
Capacitance com- pensating range pF. For external triggering in the “DC” coupling mode, signal voltages of approx. Input resistance 10 Megohm. In so doing, the square pulses must have a flat top without ramp-off, spikes and glitches; no overshoot is permitted, especially at 1 MHz and a display height of cm.
Sweep Delay If a precise marker signal is not available for checking the timebase deflection coefficients, then an ac- curate sine-wave generator may be used.

Ac- cordingly, the ha,eg is subdivided into three sectors. These instructions primarily refer to those faults which were recognized guided by the Test Instructions.
If a normal XI 0 probe is used to measure high voltages there is the risk that the compensation trimmer bridging the attenuator series resistor will break down causing damage to the input of the oscilloscope. If no video signal is available, the function of the “TV” button can be checked using mains or the built-in calibrator signal. Maintenance Within the context of maintenance, it is recommend- ed that the important characteristics of the HM are periodically checked.
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.
Maximum and Minimum Brightness Two variable resistors of kQ each, located on the upper edge of the vertical positioned Z-board, are us- ed for these adjustments hmaeg Adjusting Plan. This is a particular indication of the temporary M9 hamet 1 operating state. They may only be touched by a properly insulating screwdriver Caution!

It should be noted that the slide switch in the sweep delay section is set to the “norm. However, in this higher frequency range the vertical display height on the screen is limited to approx.
A cer- tain loss of marginal sharpness of the CRT is unavoidable, this is due to the manufacturing pro- cess of the CRT. The case is manufactured from a hard wearing material. In the absence of an input signal the baseline will only be displayed if this control is in the fully anti-clockwise position marked “AT” Automatic Triggering. Accessories supplied; Sprung Hook. HZ 30 Oscilloscope Probe x 10 The HZ 35 is a straight through probe without attenuation and therefore allows the full sensitivity of the oscilloscope to be used.
HAMEG hm 412 Oszilloskop Oscilloscope
As the HM is a fully transistorized oscilloscope the heat generation of the instrument is very low, thus ensuring long term reliable operation. In this case, the vertical input coupling should be set to “AC”. When the Sweep Delay is set in the “search” mode refer to Sweep Delay Operating Instructions it is possible to check the delay time by means of a distance measurement of the blanked baseline.
A built-in 1 kHz square -wave generator can be 4122 to check amplifier calibration and probe alignment. Special model for HM oscilloscope on request. Checking of the internal TV-triggering is possible with a video signal of any given polarity. For “Mono” operation all pushbuttons should be in hamev “out” position, the instrument is then operating on Channel I only. These voltages are measured on the Check Socket with reference to ground see Adjusting Plan. HZ 34 Test Cable BNC – BNC When the oscilloscope is used for field service applications the HZ 43 carrying case will prove to be invaluable, as it has been 421 to protect the instrument and provide storage for acces- sories and tools.
In “search” position the delay mode indicator is flashing. hsmeg
Hameg Grossansichten by sm5zbs | Photobucket
Additionally, as already mentioned, for frequencies above 20MHz the dynamic range of the display height steadily decreases. When this point is achieved the mode switch should be set to “delay”, in this condition the LED is permanently illuminated, and the time interval under test will be displayed.
The fall time of a pulse can also be measured by using this method. For this a three wire power cord with triple-contact connector and three-pole power plug is required. Connection of Test Signal The signal to be displayed should be fed to the ver- tical input of the oscilloscope by means of a screened test cable, e. The bind- I ing post mounting can be rotated so that the adapter can be! Due to the probe capacity it is only recommended for use with relatively low impedance and low frequency sources.
The signal has an amplitude of 0. This is achieved by adjusting the trim- mer located in the 2: It may be found that as the amount of expansion is increased that the trace will tend to shift, if this happens the delay fine control can be readjusted to enable the exact point of interest to be displayed. In this mode, the channels are displayed con- secutively alternating mode.
