Performance Tests
TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
4Ć45
H
Press SET TO 50%. Use the trigger MAIN LEVEL knob to stabi-
lize the display as required.
H
Press TRIGGER MENU.
H
Press the main menu button Mode & Holdoff. Then press the
side menu button Normal.
b.
Fine adjust the sync pulse amplitude: The amplitude of the TV wave-
form should now be about 2 divisions pk-pk. Do the following sub-
parts to fine adjust the vertical gain until the sync pulses measure
exactly 0.6 divisions peak-to-peak using the graticule:
H
Press VERTICAL MENU.
H
Press the main menu button Fine Scale.
H
Use the General Purpose knob, adjust the fine gain until the sync
pulse amplitude is 0.6 divisions measured using the graticule (see
Figure 4-19).
Adjust the sync pulse
amplitude for 0.6 divisions.
Figure 4-19: Adjusting Sync Pulse Amplitude
c.
Check for stable triggering against limits:
H
Read the following definition: A stable trigger is one that is con-
sistent; that is, one that results in a uniform, regular display
triggered on the selected slope (positive or negative). This display
should
not have its trigger point switching between opposite
slopes, nor should it “roll” across the screen. At horizontal scale
settings appropriate for viewing video waveforms, the TRIG’D
light remains constantly lit.
Содержание 410
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Страница 13: ...Contents xx ...
Страница 19: ...Safety Summary xx ...
Страница 25: ...Introduction x x ...
Страница 26: ...Specifications ...
Страница 47: ...Operating Information ...
Страница 63: ...Operating Information Operating Information 2Ć16 ...
Страница 64: ...Theory of Operation ...
Страница 68: ...Circuit Description Theory of Operation 3Ć4 ...
Страница 69: ...Performance Verification ...
Страница 81: ...Brief Procedures Performance Verification 4Ć12 ...
Страница 119: ...Performance Tests Performance Verification 4Ć50 ...
Страница 120: ...Adjustment Procedures ...
Страница 147: ...Maintenance ...
Страница 151: ...Maintenance Information Maintenance 6Ć4 ...
Страница 228: ...Troubleshooting TDS 410 TDS 420 TDS 460 Service Manual 6Ć81 J2 Pin 1 Figure 6 38 A02 Display Connector J2 ...
Страница 237: ...Troubleshooting Maintenance 6Ć90 J7 Pin 1 J8 Pin 1 J6 Pin 1 W1 Pin 1 W2 Pin 1 Figure 6 46 A01 Backplane Module ...
Страница 240: ...Options ...
Страница 249: ...Electrical Parts List ...
Страница 251: ...Replaceable Electrical Parts List Electrical Parts List 8Ć2 ...
Страница 252: ...Diagrams ...
Страница 258: ...Diagrams 9Ć6 ...
Страница 259: ...Mechanical Parts List ...
Страница 263: ...Mechanical Parts List 10Ć4 ...
Страница 272: ...TDS 410 TDS 420 TDS 460 Service Manual 10Ć13 1 2 3 4 5 6 7 8 9 10 11 6 3 Figure 10 3 Cables and Routing ...
Страница 275: ...Mechanical Parts List 10Ć16 ...