Tektronix 7613 User Manual

Calibration—7613/R7613 Service
f. Interchange the connections to the vertical amplifiers.
Set the TRIG SOURCE switch to right.
g. CHECK-—that a 2 division signal is displayed by the
right vertical amplifier.
h. Set the VERT MODE switch to LEFT and check that
a signal of about 5 divisions is displayed.
i. Install a 50 Q termination between the cable and the
input of the right vertical amplifier.
j. Set the deflection factor of the left vertical to
10 mV/division. Check for a display of about 5 divisions.
k. Disconnect all cables.
35. Check +SAWTOOTH OUT
a. Connect the +SAWTOOTH OUT to the input of the
left vertical amplifier. Set the deflection factor of the left
vertical amplifier for 2 volts/division.
b. CHECK—for a sawtooth display of about 5 divisions
in amplitude and greater than 10 cm in length.
36. Check +GATE OUT
a. Connect the +GATE OUT to the vertical input of the
test-oscilloscope and set the deflection factor to 2 volts/
division. Set the time/division switch to 1 ms/div. Place the
GATE selector switch in the MAIN GATE position.
b. CHECK—that displayed signai is about 5 divisions in
amplitude.
c. Disconnect all test equipment and remove the 7B53A
and the 7A15A units.
READOUT OPERATION
Equipment Required
1. 7A18 dual display vertical plug-in unit
37, Check READOUT Operation
NOTE
If the CRT has been replaced, the words identify may
not be positioned horizontally as described in steps
37a, e, and f. Select a value for R519 which will pro-
vide a correct display.
2-18 REV.
a. Install the 7A18 in the left vertical compartment. Set
the 7A18 to a dual trace mode. Push and hold the Identify
buttons on the 7A18. (Switch S2110 should be in the free
run position.) Check that the word identify is within the
top division and the bottom division of the graticule. Check
that the words identify are positioned within the left third
of the graticule. Check completeness of characters without
over scanning (over scanning causes a bright dot where
traces overlap).
b. ADJUST—Vertical Separation R2291 so the channel
1 characters are within top division, and the channel 2
characters are within bottom division.
c. ADJUST~—Character height size R2273 as needed.
d. ADJUST-character scan R2128 if characters are over
scanned.
e. Remove the 7A18 from the left vertical and install it
in the right vertical compartment. Push and hold the
identify buttons on the 7A18. Check that the words
identify are positioned within the center third of the
graticule.
f. Remove the 7A18 from the right vertical arid install it
in the horizontal compartment. Push and hold the identify
buttons on the 7A18. Check that the words identify are
positioned within the right third of the graticule.
g. If the correct characters are displayed there is no
need to adjust the Row Match adjustment R2183 or the
Column Match adjustment R2214.
h. ADJUST—Row Match adjustment R2183 and
Column Match adjustment R2214 for correct readout
display.
READOUT GATE TRIG’D OPERATION
38. Check Readout Gate Trig’d Operation
a. Set switch $2110 to Gate Trig’d position.
b. Set sweep rate to 1 sec/division.
c. CHECK~—that during the sweep that there is no
readout information displayed, until after the sweep has
been displayed. At fast sweep rates this is not noticeable.
This cornpletes the non-store calibration and checkout
procedure for the 7613/R7613.
MAY 1974
7613

Tektronix 7613 Specifications

General

Brand	Tektronix
Model	7613
Category	Test Equipment
Language	English