Tektronix 067-0521-00, Инструкция по эксплуатации

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Performance Check— 0 6 7 -0 5 2 1 -0 0
Sweep M agnifier
Horizontal Position
Intensity, Focus, Astigmatism
Scale Ilium
Trace Separation
Crt Cathode Selector
(at rear of scope)
Triggering Level
Mode
Slope
Source
Time/Cm
Time/Cm Variable
O ff
Centered
Trace focused, normal b rilli­
ance
As desired
0
External Crt Cathode
Push in and rotate fully
clockwise
Auto
+
Norm
0.5 ms
Calibrated
3. Check + 2 2 5 V
a. Requirement— Positive 225 volts must appear at the
+2 2 5 V output jack on the front panel of the 067-0521-00.
b. Connect the DC voltmeter between ground and the
+2 2 5 V output jack.
c. Push the button adjacent to the + 2 2 5 V output jack.
Read the voltage on the meter and release the button.
d. Check— Positive 225 V at the output jack, which returns
to zero when the button is released.
NOTE
The v o lta g e re a d in g a t the + 2 2 5 V jack should
be the same as the test oscilloscope p o w e r supply
re a d in g .
1. Check LO W LOAD Resistances
a. Requirement— Resistance must be within ranges indi­
cated in Table 5-1.
4. Check VARIABLE
a. Requirement— Control must be able to vary a 0.5 V
peak to peak signal amplitude from zero to a display am pli­
tude of 0.6 cm or more.
b. Connect the ohmmeter between the chassis of the 067-
0521-00 and the interconnecting plug pins indicated in Table
5-1.
c. Check— That the ohmmeter reading for each pin lies
between the values listed in Table 5-1 for that pin.
TABLE 5-1
Pin N o. M e te r Range Resistance Reading
9 XT o k a 35 kO to 43 kO
12 X I00 k!2 infinite
101 x i ka 9.5 kO to 11.7 kO
l l 1 x i
ka
13 k a to 16 ka
15 x io o o 450 12 to 55012
2. Check HIGH LOAD Resistances
a. Requirement— Resistance must be within ranges indi­
cated in Table 5-2.
b. Set the Type 1M1 TEST FUNCTION switch to HIGH
LOAD.
c. Check— That the ohmmeter reading for each pin lies
between the values listed in Table 5-2 for that pin.
TABLE 5 -2
Pin N o. M eter Range Resistance Reading
15 X I00 12 450 12 to 55012
12
x i ka
12.5 k!2 to 15.5 k!2
l l 1 x i ka
1.3 k!2 to 1.6 k!2
101 XI k!2
2 k!2 to 2.5 k!2
9 x i ka
2.2 k a to 2.6 ka
d. Install the 067-0521-00 test oscilloscope and tighten the
securing rod. Turn the test oscilloscope power switch to on.
A llow at least 20 minutes warm up at 25° C, ± 5 ° , before
checking the instrument to the given accuracies.
1When measuring pins 10 and 11, connect a shorting strap across
D 80 to remove non-linear device from resistance measurements.
b. W ith all controls set as previously indicated, apply
a 0.5 V square wave from the standard amplitude calibrator
to the EXT INPUT.
c. Rotate the VARIABLE control from fully counterclock­
wise to fully clockwise.
d. Check— A t the fully counterclockwise position, no
signal should be visible on the free-running trace; fully clock­
wise, the signal amplitude should be 0.6 Me or more.
5. Check Plug-in Trigger
a. Requirement— Sufficient signal to provide a stable
display.
b. Set the standrad amplitude calibrator to 5 V and adjust
the VARIABLE control for a 5.5 cm display.
c. Set the test oscilloscope Time Base A Triggering Source
switch to Plug-In and adjust the Triggering Level control for
a stable square wave display (index mark on Triggering knob
should be near the center (0) Position).
d. Check— A stable display indicates that the 067-0521-00
internal trigger network is delivering a signal to pin 5 of the
connecting plug. (This signal simulates the internal trigger
from a dual-trace plug-in unit with single channel pickoff.)
6. Check VERTICAL POSITION
a. Requirement— A b ility of the VERTICAL POSITION con­
trol to move the display up (clockwise) and down (counter­
clockwise) over a full positioning range.
b. Set the standard amplitude calibrator to 10 V and
adjust Variable for 6 cm of display.
c. Check— Rotating the VERTICAL POSITION control fully
clockwise should move the display completely off the grati­
cule in an upward direction; fully counterclockwise should
move the display completely off the graticule in a downward
direction.
5 -2