TB 9-6625-2346-35
(19) Press TI A TRIGGER SLOPE pushbutton to IN:
and adjust A
TRIGGER LEVEL control fully ccw.
(20) Adjust R435 (fig. 2) so display just solidly triggers on negative peak of signal (R).
(21) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to one side of a
BNC tee. Connect BNC tee to TI CH 1 using a X10 attenuator and 50Ω feedthrough
termination. Connect remaining side of BNC tee to TI EXT INPUT.
(22) Set TI CH 1 VOLTS/DIV switch to 10m and A TRIGGER A SOURCE switch
to EXT.
(23) Set oscilloscope calibrator for a LEVEL SINE output of 50 kHz and 2.2
divisions of vertical display on TI.
(24) Adjust TI A TRIGGER LEVEL control for a stable display.
(25) Set TI HORIZONTAL MODE A ALT B switch to B and adjust B TRIGGER
LEVEL control for a stable display.
(26) Set TI CH 1 VOLTS/DIV switch to .1.
(27) Adjust R627 (fig. 2) so that a display can be maintained by adjusting B
TRIGGER LEVEL control (R).
11. Counter Timer Multimeter
a. Performance Check
(1) Position TI controls as listed in (a) through (o) below:
CH 1 ⇕POSITION to midrange.
(a)
(b)
VERTICAL MODE CH1 BOTH CH 2 switch to CH 1.
(c)
CH 1 VOLTS/DIV switch to .5.
(d)
CH 1 AC GND DC switch to DC.
⇐POSITION⇒ to midrange.
(e)
(f)
HORIZONTAL MODE A ALT B switch to A.
(g)
A SEC/DIV switch to .5 s.
(h)
B SEC/DIV switch to .05 s.
(i)
B TRIGGER SLOPE pushbutton to OUT:
.
(j)
B TRIGGER LEVEL control to midrange.
(k)
VAR HOLDOFF to NORM.
(l)
A TRIGGER P-P AUTO pushbutton pressed.
(m) A TRIGGER SLOPE pushbutton to OUT:
.
(n) A TRIGGER LEVEL control to midrange.
(o) A&B INT switch to CH 1.
(4) Press TI UPPER FUNCTIONS IN LOWER FUNCTIONS OUT pushbutton to
the IN position.
(5) Press TI FREQ pushbutton.