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Subject to change without notice
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Operating Modes:CHI/II-TRIG.I/II, DUAL, ADD,
CHOP., INV.I/II and XY-Operation .................
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Triggering Checks ..............................................
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Timebase ...........................................................
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Component Tester ............................................
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Trace Alignment ................................................
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Service Instructions
General ..............................................................
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Instrument Case Removal .................................
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Operating Voltages ............................................
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Maximum and Minimum Brightness .................
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Astigmatism control ..........................................
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Trigger Threshold ..............................................
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Trouble-Shooting the Instrument .......................
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Replacement of Components and Parts ...........
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Adjustments ......................................................
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Short Instruction
. ...............................................
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Front Panel Elements, Front View
. ..................
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Table of contents
Oscilloscope datasheet
Operating Instructions
Symbols ............................................................
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General Information ...........................................
6
Use of tilt handle ...............................................
6
Safety ................................................................
6
Operating conditions .........................................
7
Warranty ............................................................
7
Maintenance .....................................................
7
Protective Switch-Off ........................................
7
Power supply ....................................................
7
Type of signal voltage ........................................
8
Amplitude Measurements .................................
8
Time Measurements .........................................
9
Connection of Test Signal .................................
10
First Time Operation ..........................................
12
Trace Rotation TR ..............................................
12
Probe compensation and use ............................
12
Operating Modes of the Y Amplifier .................
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X-Y Operation ....................................................
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Phase difference measurement
in DUAL mode ............................................
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Measurement of an amplitude modulation .......
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Triggering and Timebase ...................................
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Automatic Triggering .........................................
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Normal Triggering, Slope ...................................
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Trigger Coupling ................................................
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Triggering of Video Signals ................................
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Line Triggering ...................................................
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Alternate Triggering ...........................................
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External Triggering ............................................
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Trigger Indicator ................................................
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Function of variable HOLD OFF control .............
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Y Overscanning Operation ................................
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Component Tester ............................................
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Test Patterns .....................................................
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Test Instructions
General ..............................................................
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Cathode-Ray Tube: Brightness, Focus,
Linearity, Raster Distortions .........
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Astigmatism Check ...........................................
23
Symmetry and Drift of the Vertical Amplifier ....
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Calibration of the Vertical Amplifier ...................
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Transmission Performance
of the Vertical Amplifier .................................
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Oscilloscope
HM 303
-4
GB
St. 170698/hüb/goRR