Tektronix DC 5010 Anleitung Seite 261

Calibration-DC 501 0
Performance Check Procedure
f. Adjust the DC 5010 Channel A triggering level using
the
t
(increment) and
4
(decrement) buttons until the GATE
-
annunciator light (on the display) just starts or stops blinking
(the new level should be lower.)
g. Note the DC 5010 display readout (peak input
voltage).
h. Divide the readout on step 6d by the readout on step
6g.
i. CHECK-that the ratio between the two readings is
between 1.03 and 1 . I 3 (ratio of input capacitance value to
the 20 pF normalization).
j. Press the DC 5010 LEVEL CH A button (to turn it
off-unlighted).
k. Remove the DC 5010 CHANNEL A input connection
and connect it to the CHANNEL B input. Change the func-
tion generator Multiplier switch to 102.
I. Connect a cable from the CHANNEL B shaped out to
the CHANNEL A input
m. Press Auto Trig, to trigger both channels.
NOTE
Step 1 and m a 1 1 0 w the A Channel to tell us whether or
not the B Channel is triggering.
n. Press the DC 501 0 LEVEL CH B button.
o. Adjust the DC 5010 Channel B triggering level using
the
t
(increment) button until the GATE light (on the display)
just stops blinking.
p. Note the DC-5010 display readout (peak input
voltage).
q. Change the function generator Multiplier switch to
I 05.
r. Adjust the DC 5010 Channel
B triggering level using
the
t
(increment) and
4
(decrement) buttons until the GATE
light just starts or stops blinking.
Function
Generator
Power
Module
\
I
Normalizer
5X
Attenuator
I
50 B
Termination
Fig. 4-4. Performance Check setup for step 6.
REV JUL 1983