•
•
•
Brief Performance Checks
7.
Align the active cursor to the top of the signal using the General Purpose
Knob.
8.
Press the TOGGLE button and align the active cursor to the bottom of
the
signal using the General Purpose Knob.
9.
Verify that the
~Volts
readout
is
about 5.2
V.
10. Set
1/ATto
On.
11.
Align the active cursor to a rising edge of the signal using the General
Purpose Knob.
12. Press the
TOGGLE button and align the active cursor to the next rising
edge of the
signal using the General Purpose Knob.
13.
Verify that the 1 /
~
T readout
is
about 1 kHz.
14.
Set ATIME
to
On.
15. Verify that the
~
Time readout
is
about 1
ms.
Verify the Input Channels
1 . Display the channel
to
be verified and turn
all
others off.
2.
Install the probe on the channel to be verified.
3.
Press the AUTOSET button .
4.
Press the VERTICAL MENU button and set CPLG
to
DC.
5.
Verify that the channel is operational, confirming the following state-
ments are true.
• The vertical scale readout
is
set to 2 V for the channel under test
and a square wave
signal about 2.6 divisions
in
amplitude
is
on-
screen.
• Pressing the SET LEVEL TO 50% button sets the trigger level
readout to approximately 2.7
V.
• The vertical POSITION control moves the signal
up
and down the
screen when rotated. Return the bottom portion of the
displayed
waveform to the center horizontal graticule line.
•
Turning the VOLTS/DIV control counterclockwise and clockwise
decreases and increases the amplitude of the waveform. Return the
volts/div scale to 2
V.
TAS 475 and TAS 485 Service Manual
4-5
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