TB 9-4931-506-24
a. Connect TI to oscilloscope left compartment, using extender and remove TI
protective covers.
b. Install time base unit into oscilloscope right compartment.
c. Pull oscilloscope POWER switch to on and allow 15 minutes for equipment to warm-
up and stabilize.
d. Position TI controls as listed in (1) through (4) below:
(1) POSITION control to midrange.
(2) AMPLITUDE control to midrange.
(3) REP RATE 1 kHz (kilohertz) pushbutton pressed.
(4) TEST switch to VERT OR HORIZ COM MODE.
e. Position time base controls as listed in (1) through (8) below:
(1) AUTO TRIG pushbutton pressed.
(2) TRIG SOURCE LEFT pushbutton pressed.
(3) +SLOPE pushbutton pressed.
(4) DISPLAY MODE MAIN SWP pushbutton pressed.
(5) All other pushbuttons to out position.
(6) MAIN SEC/DIV switch to 0.1 ms.
(7) CAL control fully cw (clockwise).
(8) All other controls to midrange.
f. Connect multimeter to oscilloscope chassis ground power supply test points listed in
table 4. Multimeter will indicate within limits specified. Refer to TB 9-4931-501-24 for
location of oscilloscope power supply test points and adjustments.
Oscilloscope
(V dc)
Adjustments1
test points1
Min
Max
-30V
-30.00
-30.00
-30V R950
+30V
+30.00
+30.00
+30V R920
+15V
+14.85
+15.15
---
+5V
+4.9
+5.1
---
-15V
-14.85
-15.15
---
1Refer
8. Vertical and Horizontal POSITION Ranges
a. Performance Check
(1) With TEST switch set to VERT OR HORIZ COM MODE, rotate POSITION
control throughout its range. Trace on oscilloscope will not move.