TB 9-6625-2294-35
NOTE
Throughout this procedure, readout and control messages are
displayed along the top and bottom of display (crt).
c. Press corresponding pushbuttons for indications as listed in (1) through (9) below:
(1) VERTICAL MODE CH 1, CH 2, CH 3, and CH 4 on.
(2) CH 1 and CH 2 input coupling to 1 MΩ DC.
(3) VERTICAL MODE ADD, INVERT, and 20 MHz BW LIMIT off.
(4) VERTICAL MODE CHOP/ALT to ALT.
(5) TRIGGER MODE to AUTO LVL and TRIGGER SOURCE to VERT CH 1.
(6) TRIGGER COUPLING to DC and TRIGGER SLOPE to + (plus).
(7) TRACK/INDEP to INDEP (out).
(8) ∆t and ∆V to off (no cursors on display).
(9) CH 3 and CH 4 VOLTS/DIV for .1 V.
d. Position controls as listed in (1) through (8) below:
(1) VERTICAL POSITION controls to midrange.
(2) Horizontal POSITION control to midrange.
(3) TRIGGER LEVEL control to midrange.
(4) TRIGGER HOLDOFF control fully cw to B ENDS A detent.
(5) SCALE ILLUM control fully ccw.
(6) CH 1 and CH 2 VOLTS/DIV switches to 100 mV and VAR control fully cw to
detent.
(7) A SWP SEC/DIV switch to 100 s (knobs locked) and VAR control cw to detent.
(8) INTENSITY, FOCUS, and READOUT INTENSITY controls for suitable
viewing.
a. Performance Check
(1) Press VERTICAL MODE pushbuttons CH 2, CH 3, and CH 4 to off.
(2) Connect digital multimeter HI to TI J119 (fig. 1) pin 4 and LO to chassis ground. If
digital voltmeter does not indicate between +9.99 and +10.01 V dc, perform b below.
b. Adjustments.
Adjust VOLT REF ADJ
R1292 (fig. 2)
for a
digital multimeter
indication of 10.00 V dc (R).