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Performance Tests
TAS 455 and TAS 465 Service Manual
4Ć19
9. Disconnect the test setup from the oscilloscope.
10. Repeat this procedure until all input channels are verified.
Check XĆAxis Gain
Equipment Required: One pulse generator (item 10) and one precision
coaxial cable (item 5).
1. Display channel 1, turning all others off.
2. Connect the output of the pulse generator to the CH 1 input as shown
Figure 4Ć9.
Pulse Generator
Precision Cable
Figure 4Ć9:ăXĆAxis Gain Test Setup
3. Set the output of the pulse calibration generator for 50 mV.
4. Press the AUTOSET button.
5. Set the volts/div scale to 10 mV.
6. Center the display using the vertical POSITION control.
7. Press the HORIZONTAL MENU button and set XY to On.
8. Check that the amplitude of the XĆaxis signal is 4.8 to 5.2 divisions.
9. Set XY to Off.
10. Disconnect the test setup from the oscilloscope.
These procedures check those characteristics that relate to the horizontal
system and are listed as checked under Warranted Characteristics in
Section 1, Specifications.
Check Time Base and Time Cursor Accuracy
Equipment Required: One time marker generator (item 9), one precision
coaxial cable (item 5), and one 50 W termination (item 3).
1. Display channel 1, turning all others off.
Horizontal System
Checks