HAMEG 412 PDF
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 · 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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Any M5 41 hum or common-mode interference may be thereby avoided. Also the precise measure- ment for the delayed portion of the waveform is possible. The basic requirement for this is a correct DC-balance align- ment on the input of the vertical amplifier see Operating Instructions. Even small capacitive changes can reduce the transmission performance.
The mutual isolation be- tween the touchable metallic parts, the earthed con- tact, and the power contacts is tested at 1 V 50Hz.
When triggering at mains frequency, actuation of the “TV” push button should have no effect.
Hameg 412 Grossansichten
When triggering externally a signal of at least 0. Power consumption; 36 W approx. This termination should be used to I terminate signal generators and koax -cables which have a 50 ohm characteristic hamef. A further check of the vertical amplifier symmetry is possible by checking the control range of the “Y-POS.
When one trace is shifted vertically across the entire screen, the position of the other trace must not vary haemg more than 0. 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.
SM5CBW’s Hameg Oscilloscope Presentation
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.
In “AC” position, a 30Hz signal requires a trigger voltage of approx. It should be noted that the slide switch in the hamef delay section is set to the “norm.
For both of these operating modes the vertical posi- tion of the trace depends on the setting of the “Y-POS. The delay fine control should now be adjusted so hmaeg the display starts just prior to the short time interval to be investigated. The input attenuators, located in the front of the amplifier, are frequency-compensated in each posi- tion.
This can be easily achieved as the HM has a built-in square-wave generator with a repetition frequency of approx. Therefore, the calibration of the X-signal during X-Y operation is determined by the setting of the Channel II input attenuator and fine control.
The fuse holder with its square top plate can be pulled out, and changing of the voltage is possible by turn- ing this plate 90 degrees for each of the four AC voltages marked on the plate see triangle below the fuse holder. 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.
In accordance with standard safety regulations, the earth wire must not be disconnected. Maximum deviations of 1. Special model for HM oscilloscope on request. The X-signal is then de- rived from Channel II. This high voltage is on both the CRT socket and the vertically positioned PC-board sur- rounding the socket. 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.
The in- strument should be placed in a clean and dry room. However, a change of 1 cm is just permissible. In general, no great changes occur after the in- strument has left the factory, and it is left to the operator’s descretion whether this test is undertaken or not. 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.
Oscilloscope HM Equipment HAMEG GmbH, Frankfurt, build
Television video signals are relatively easy to trigger. All hajeg buttons should be in the “out” position. Therefore, when the instruments is in continuous operation it should be used in the horizontal position preferably on its tilt stand.
However, a wide range of ac- cessories which include test hamegg and probes are available and should be ordered according to the par- ticular application. CRT phosphor could be damaged under this conditionprobably the push- button for the “Hor.
For 4112 suppres- sion the output signal is hamet via a low-pass filter. A com- pensated 2: The trimming pots for the high voltage circuit, minimum and max- imum intensity are only accessible inside the instru- ment see Adjusting Plan. Addresses are provided at the back of the manual. In order to obtain a stable display the timebase must be triggered synchronously with the test signal. Following this it should be ascertained whether the same trigger sensitivity is also present with the manual “LEVEL” control.
As already mentioned simple signals may be trig- gered automatically i. These facilities coupled with graticule illumination, Z Modulation, and a square-wave calibrator make the HM a very versatile instrument. This is recognized, if the vertical trace posi- tion changes considerably when the fine control haameg the input attenuator is rotated. Do not try to trigger the chop frequency 1MHz.
Accessories optional Attenuator Probes xIO and x These voltages are measured on the Check Socket with reference to ground see Adjusting Plan. Alteration of the trigger threshold is only possible internally. Possibly some test pictures are necessary for a good representation of the graticule. Input resistance 10 Megohm.
Probe Adjustment To achieve the undistorted display of signals when using an XI 0 or XI 00 attenuator probe the probe must be compensated to match the input impedance of the vertical amplifier. Under these conditions no variations should be detected on the display in either the vertical or horizontal axis. The LED in the delay section is not illuminated in this mode. Certainly the quality of the transmission performance is not hamef dependent on the measuring amplifier.