HAMEG HM 208 PDF
Download HAMEG HM OSCILLOSCOPE UM service manual & repair info for electronics experts. Find great deals for HAMEG HM Oszilloskop 20mhz digital Storage. Shop with confidence on eBay!. I have been experiencing a problem with my Hameg HM oscilloscope. It was working correctly then the trace suddenly went back to the left.
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The case, chassis and all measuring terminals are connected to the protective earth contact of the appliance inlet.
The instrument operates according to Safety Class I three-conductor power cord with protective earthing conductor and a plug with earthing contact. Trigger signal inputto TRIG. Digital Storage Memory x8bit.
Should normally be resetto CAL. Under certain conditions, 50 Hz or 60 Hz hum voltages can occur in the measuring circuit due to the interconnection with other mains powered equipment or instruments. If 1 signal period per cm is displayed, the frequency range is 20 mHz to 1 0 Hz. Questions and answers about this item. The glass bulb must not be allowed — hamwg any circumstances — to come into contact with hardened tools, nor should it undergo local superheating e. When the complete memory contents are written, the stylus is lifted penlift commandand the complete waveform can again be seen on the screen.
Stored signals in HOLD condition gameg retained in the real time mode; they can be displayed on the screen at any time hamfg pushing this button.
However if your circuit has a low input impedance e. If measurement, fault finding or calibration on the opened instrument is unavoidable, this should only be performed by an expert who is familiar with the risk involved.
Starting with the vertical carrying position Fig.
Full text of “Hameg: hm”
Therefore C should be suffi- ciently large and produce only a relatively small just observable phase shift. Larger deviations are corrected with the aid of a small screw driver with a blade width of approx. Two sockets provide for quick testing of the 3 junction areas in any small power transistor.
The HM has a plotter output for connecting a XY plotter. Subject to change without notice M9 incorrect correct Attentuator probes other than those mentioned above gen- erally have larger probe diameters and do not fit into the cal- ibrator sockets.
If exactly one signal period is to be displayed over 10 cm screen width, a frequency range of 2 mHz to 1 Hz results. If it is a question of pulses of the same shape, read off at steep edges.
PLOT I is depressed first for this purpose. Deflection coefficients 12 calibrated steps. The signal edges are invis- ible during haneg adjustment.
If the corresponding PLOT button is depressed again, a complete plotting pro- cess restarts. They are a hazard to life. It is certainly self-evident that the input cou- pling for the signal input or inputs must be set to Haeg for low frequency signals.
Oszillograph HM Equipment HAMEG GmbH, Frankfurt, build 19
Further pressure releases the button and switches back to real time mode. Thus for fast signals the LED appears to glow continuously, for low repetition rate signals, the LED flashes at the repetition rate of the trigger point of the input signal. There are 0 items available.
It is replaced by the digitally generated quartz control timebase. In the LF position low frequency frequencies above 1 kHz in the 028 and external trigger signal are increasingly attenuated, high frequency disturbances and noise are therefore suppressed. I buttons not depressed.
HAMEG Hm208 Oscilloscope 20mhz Digital Storage
haameg X10 button should not be depressed because otherwise a large dot spacing approx. Too high hum levels can frequently be the cause of faults which are otherwise unexplainable. This also applies for whole number multiples orfractions of the one signal frequency.
The same procedure applies for Channel II single channel display and storage. The compensation trim- mer must now be adjusted. If it is depressed, the unit is switched to the second memory.
The use of test cables with high imped- ance circuits is only recommended for relatively low fre- quencies up to approx. The series impedance of the probe pro- vides a certain amount of protection for the vertical amplifier. There- fore, wave form distortions cannot be excluded at high repetition frequencies. For this purpose, select with the 2. Capacitors in the instrument can still be charged even if the unit has been isolated from all voltage sources.
High volt- ages are dangerous. I h are depressed. In some cases e.