Tektronix TDS6404, Руководство по обслуживанию

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Brief Procedures
4- 10
TDS6000 Series Service Manual
7. Set up the oscilloscope:
H
Push the front panel AUTOSET button. This sets the horizontal and
vertical scale and vertical offset for a usable display and sets the trigger
source to the channel that you are testing.
H
Pull down the Vert menu, select Vertical Setup, and then touch Offset .
Confirm that the Ch1 Offset is about 1.6 V (0.0 V if not using a P7240
or P7260 probe).
8.
Verify that the channel is operational:
Confirm that the following statements
are true.
H
For TDS6604: The vertical scale readout for the channel under test
shows a setting of about 500 mV, and a square-wave probe-compensa-
tion signal about 1 division (0.5 divisions if not using a probe) in
amplitude (about 460 mV [240 mV if not using a P7260 probe]) is on
the screen.
H
For TDS6404: The vertical scale readout for the channel under test
shows a setting of about 200 mV (500 mV if not using a P7240 probe),
and a square wave probe-compensation signal about 2.2 divisions
(0.5 divisions if not using a probe) in amplitude (about 448 mV [240 mV
if not using a P7240 probe]) is on the screen.
H
The front-panel vertical POSITION knob (for the channel that you are
testing) moves the signal up and down the screen when rotated.
H
Turning the vertical SCALE knob counterclockwise (for the channel you
are testing) decreases the amplitude of the waveform on-screen, turning
the knob clockwise increases the amplitude, and returning the knob to
100 mV (500 mV if not using a probe) returns the amplitude to about
4.5 divisions (0.5 divisions if not using a probe).
9. Verify that the channel acquires in all acquisition modes: Pull down the
Horiz/Acq menu to select
Horizontal/Acquisition Setup. . .
. Click the
Acquisition tab in the control window that displays. Click each of the six
acquisition modes and confirm that the following statements are true.
H
Sample mode displays an actively acquiring waveform on-screen. (Note
that there is a small amount of noise present on the square wave).
H
Peak Detect mode displays an actively acquiring waveform on the screen
with the noise present in Sample mode “peak detected.”
H
Hi Res mode displays an actively acquiring waveform on the screen with
the noise that was present in Sample mode reduced.
H
Average mode displays an actively acquiring waveform on the screen
with the noise reduced.