TB 9-6625-2295-24
20. CAL 02 Vertical
a. Alignment
(1) Press upper TRIGGER MODE pushbutton to CAL 02 (bottom left of display).
(2) Press and release upper TRIGGER COUPLING pushbutton. TI will step from
100 to 111 and display will indicate DC BALANCE IN PROGRESS.
(3) Display readout will indicate CH 1 VAR, CH 2 POS, (step) 111, 500 mV.
(4) Set oscilloscope calibrator for a CHAN 1, VOLT mode output of .5 V at 1 kHz.
(5) Adjust CH 2 POSITION control to position sweep within 1 division of center
horizontal graticule line.
(6) Adjust CH 1 POSITION and VOLTS/DIV VAR controls for 10 divisions of
horizontal deflection.
NOTE
When step 111 is performed, step 112 is also automatically
performed. No indication of step 112 will be shown unless a
LIMIT error is encountered.
(7) Press and release upper TRIGGER COUPLING pushbutton. Display readout
will indicate (step) 113, 500 mV, BWL.
NOTE
In the following steps, if the LIMIT message appears, it
probably indicates that the upper TRIGGER COUPLING
pushbutton was pressed before the required signal was applied.
Press and release the lower TRIGGER COUPLING
pushbutton, verify that the correct signal is applied, and then
press and release the upper TRIGGER COUPLING
pushbutton.
(8) Press and release upper TRIGGER COUPLING pushbutton for TI step
numbers and oscilloscope calibrator output settings as listed in table 25.
Table 25. Vertical Attenuator Check
Test instrument
CAL 02
Oscilloscope calibrator output
step numbers
settings
113,1141
0.5 V
115
0.2 V
116
0.1 V
117
50
mV
118
20
mV
119
1
V
120
10
V
1
When step 113 is performed, step 114 is also automatically done.
No indication of stop 114 will be shown unless a LIMIT error is encountered.