TB 9-6625-2294-24
Table 21. Timing (CAL 01 Steps 7 Through 16)
Oscilloscope
Test instrument
Oscilloscope
T
calibrator
Superposition
MARKER
SEC/DIV
Displayed
tolerance in
ime markers
output settings
switch settings
step number
divisions
over 8 divisions
S/D
181
24
20
ns
1.2
1
S/D
19
8
50
ns
0.2
2
S/D
201
24
50
ns
1.2
2
S/D
21
8
200
ns
0.1
10
S/D
22
8
1
ms
0.2
50
S/D
1
23
24
1
ms
1.2
50
S/D
24
8
10
ns
0.2
0.5
S/D
1
25
24
10
ns
1.2
0.5
S/D
26
8
2
ns
0.2
0.1
27
8
20
nS/D
1
ns
1.2
1If
adjustments are made, TI will indicate previous step.
(42) After step (27) has been completed TI display will indicate: ADJ (step) 28,
500 ps.
(43) Disconnect oscilloscope calibrator SOURCE/MEASURE CHAN 1 from
oscilloscope Vertical 1 input and connect to CH 2 of TI.
(44) Set oscilloscope calibrator MARKER output to 2 nS/D.
lines at intersections of the two waveforms (R).
(46) Press and release upper TRIGGER COUPLING pushbutton. Display will
indicate: ADJ (step) 29, 1 ms.
(47) Move connection from TI CH 2 to oscilloscope Vertical 1 input and set
oscilloscope sweep speed to 20 s.
(48) Set oscilloscope calibrator MARKER output to 1 mS/D and adjust control for
8 time markers over the center 8 divisions of display.
(49) Adjust REF OR DLY POS control as necessary to bring time markers on to
oscilloscope display and adjust control to superimpose time markers to within 0.2 division.
(50) Press and release upper TRIGGER COUPLING pushbutton. Display will
indicate: DIAGNOSTIC. PUSH A/B TRIG TO EXIT.
19. CAL 02 - Vertical
a. Performance Check
(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) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to CH 1. Set
oscilloscope calibrator VOLTAGE output to 0.5 V and frequency to 1 kHz.