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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If condensed water exists in the instrument it should be acclimatized before switching on. Thus any intermediate value inside the 1 scale can be set. The plotter drive voltages are O. 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. Therefore the signal should in no case exceed 8 cm peak to peak on the screen.
It can be switched over to other voltages at the fuse holder combined with the 3-pole appliance inlet at the rear of the instrument. The bandwidth of the HM is therefore fully utilized when using the HZ5152 and 54 probes without having to accept wave form distor- tions. Flowever, exceptions to this are possible. Vertical resolution; points for 10cm. I buttons not depressed.
It can be easily operated after remov- ing the casing see servicing instructions. Also these probes do not normally have compensation facilities.
Hameg HM 2 Kanal Storage | eBay
II input attenuator is mh out. Subject to change without notice M21 Short instruction for HM in real time mode Switching on and setting up Hamey oscilloscope to power outlet, depress red POWER button above right next to the screen. Stor- age with single sweep is not possible in the 20 and XY modes but in all other modes. Measurements Apply test signal to the vertical input connectors of CH.
The denser the dot sequence which simu- lates the signal shape, the more accurately the memory dis- play can be evaluated. The 3 way slide switch is located on the right side of the unit between two circuit boards distance mm from the plastic front edge, around at mid height. A terminating resistance is some- times recommended with sine signals as well. Guarantee Each instrument runs through a quality test with 10 hour burn-in before leaving the production.
The vertical position of the dis- play depends upon the Y-POS. Horizontal resolution in timebase mode Channel I alone: When the appropriate plot button hame depressed, the plotter feed is switched on, the stylus lowered with a short delay and memory contents plotted out.
This can save the purchase of an oscilloscope with larger bandwidth and has the advantage that defective compo- nents can be ordered from HAMEG and replaced by one- self.
HAMEG HM208 Oszilloskop 20mhz digital Storage
Should the waveform held in store 1 and store 2 need to be plotted, take care not to release the HOLD buttons when using the 2. X10 button beneath the screen for expansion of the sweep should not be depressed in this case.
However, a sudden signal change is detected immediately in the refresh mode by the junction in the wave train. The hamge advantage over ordinary probes are field replaceable parts and the HF-compensation feature on the 1 0: M8 Subject to change without notice 1 kHz compensation This C-trimmer calibration connpensates the capacitive loading of the oscilloscope input approx. When the stored sig- nal is plotted, the full signal display reappears automatically on the screen, hamge pen is lifted and the XY plotter stops.
M14 Subject to change without notice Memory mode General Information The controls for the memory mode are nearly all located in the X section contained within boundar lines on the front panel: It is only par- ticularly simple in this way. After this calibration, not only the maximum possible bandwidth is obtained in the attenuator probe mode haneg also a largely constant group delay at the end of the range.
There- fore, wave form distortions cannot be excluded at high repetition frequencies. Slope; positive or negative. If the switch is turned too far to the left, the display is out of focus and hazy. The use of test cables with high imped- ance circuits is only recommended for relatively low fre- quencies up to approx. Maintenance Various important properties of the oscilloscope should be carefully checked at certain intervals.
It is certainly self-evident that the input cou- pling for the signal input or inputs must be set to DC for low frequency signals.
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Naturally a stored picture can also be compared with a real time picture. If no stable trigger point is found with normal triggering with extremely complex composite signals even after slowly rotating the LEVEL knob, solid 280 can be obtained in many cases by operating the variable time control knob on the time switch.
The faster line pulses are then attenuated by a low pass filter to such an extent it is easily possible to trigger on the leading or trail- ing edge of the frame-synchronizing pulse using the level control.
The screen may be cleaned with water or washing benzine but not with spirit alcohol or sol- ventsit must then be wiped with a dry clean lint-free cloth. Contact the seller – opens in a new window or tab and request postage to your location. The maximum sensitivity and input impedance are now the same in both deflection directions. With low frequency signals below approx. However, if the corres- ponding HOLD button is depressed in addition, the last vis- ible signal is permanently stored.
The instrument should be kept in a clean and dry room and must not be operated in explosive, hakeg, dusty, or moist environ- ments. However, the load on a supply could become open circuited on a defective unit causing the supply capacitors to remain charged.
Overdrive in the X direction can be detected easily by left or right sided flattening clipping.
HAMEG Hm208 Oscilloscope 20mhz Digital Storage
It switches the memory timebase from repetitive sweep to single sweep. Line trigger can also be useful hj display signals below the trigger threshold less than 5 mm. But only the first flash initiates the timebase. Switch test signal coupling to AC or DC. Scanning and storage start at this instant.