TB 9-6625-2346-35
(15) Adjust R749 (fig. 1) to position middle time marker to center vertical graticule
line.
(16) Pull TI X10 CAL control to out position and check that there is no horizontal
shift in time marker position.
(17) Repeat (13) through (16) above until no further improvement is noted.
(18) Set TI A AND B SEC/DIV switches to .1 s and push X10 CAL control to in
position.
(20) Adjust A TRIGGER LEVEL control for a triggered display and ⇐POSITION⇒
control to align 1st time marker with 1st vertical graticule line.
(21) Adjust C703 (fig. 1) for 1 time marker per division over center 8 divisions (R).
(22) Position TI switches as listed in (a) through (c) below:
(a) HORIZONTAL MODE to B.
(b) A SEC/DIV to 1 s.
(c) B SEC/DIV to .1 s.
(23) Adjust ⇐POSITION⇒ control to align 1st time marker with 1st vertical
graticule line.
(24) Adjust C713 (fig. 1) for 1 time marker per division over center 8 divisions (R).
(25) Position TI controls as listed in (a) through (c) below:
(a) HORIZONTAL MODE switch to B.
(b) A AND B SEC/DIV switches to .05 s.
(c) X10 CAL switch to out position.
(27) Adjust ⇐POSITION⇒ control to align 1st time marker that is 25 ns beyond
start of sweep with 2nd vertical graticule line.
(28) Adjust C775 (2236) and C785 (2236) ( fig. 1) alternately or C774 only (2236A)
(fig. 1) for 1 time marker
every 2
divisions over center 8
divisions (R).
a. Performance Check
(1) Position TI controls as listed in (a) through (l) below:
(a)
VERTICAL MODE CH1 BOTH CH2 switch to CH 1.
(b)
CH 1 and CH 2 VOLTS/DIV switches to 5m.
(c)
A AND B SEC/DIV switches to .2 s.
(d)
B DELAY TIME POSITION dial fully ccw.
(e)
B TRIGGER SLOPE pushbutton to OUT.
(f)
B TRIGGER LEVEL control to midrange.
(g)
A TRIGGER P-P AUTO pushbutton pressed.
(h)
A TRIGGER SLOPE pushbutton to OUT.
(i)
A TRIGGER LEVEL control to midrange.
(j)
A TRIGGER A&B INT switch to VERT MODE.