Tektronix 410, Service Manual

Page: 78 / 275

Brief Procedures
TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
4Ć9
b. Initialize the oscilloscope:
H
Press save/recall SETUP.
H
Press the main-menu button Recall Factory Setup; then press
the side-menu button OK Confirm Factory Init.
c.
Modify default settings:
H
Press AUTOSET to obtain a viewable, triggered display.
H
Set the horizontal SCALE to 200
m
s.
H
Press VERTICAL MENU.
H
Press the main-menu button Bandwidth. Then press the side-
menu button 20 MHz.
H
Press CLEAR MENU to remove the vertical menu from the
screen.
2. Verify that the time base operates: Confirm the following statements.
a. One period of the square-wave probe-compensation signal is about
five horizontal divisions on-screen for the 200
m
s horizontal scale
setting (set in step 1c).
b. Rotating the horizontal SCALE knob clockwise expands the wave-
form on-screen (more horizontal divisions per waveform period), and
that counterclockwise rotation contracts it, and that returning the
horizontal scale to 200
m
s returns the period to about five divisions.
c. The horizontal POSITION knob positions the signal left and right
on-screen when rotated.
3. Remove the test hookup: Disconnect the probe from the channel input
and the probe-adjust terminal.
Verify the Main and Delayed Trigger Systems
Equipment Required: One P6138 probe.
Prerequisites:
None.
Procedure:
1. Install the test hookup and preset the oscilloscope controls:
a. Hook up the signal source: Install the probe on CH 1. Connect the
probe tip to PROBE ADJ on the front panel; leave the probe ground
unconnected. (See Figure 4-3 on page 4-7.)
b.
Initialize the oscilloscope:
H
Press save/recall SETUP.
H
Press the main-menu button Recall Factory Setup.
H
Press the side-menu button OK Confirm Factory Init.
c. Modify default settings: