TB 9-4931-503-24
Table 5. Main Sweep Timing (Mag) - Continued
Oscilloscope calibrator
Test instrument
err display
MAIN SEC/DIV
MARKER output
indications
switch settings
settings
( %)
0.1
ms
0.1
mS/D
4
0.2
ms
0.2
mS/D
4
0.5
ms
0.5
mS/D
4
1
ms
1
mS/D
4
2
ms
2
mS/D
4
5
ms
5
mS/D
4
10
ms
10
mS/D
4
20
ms
20
mS/D
4
50
ms
50
mS/D
4
0.1
s
0.1
S/D
4
0.2
s
0.2
S/D
5
0.5
s
0.5
S/D
5
b. Adjustments
(1) Release TI SWP MAG pushbutton (out), set TI MAIN SEC/DIV switch to 1 m
and oscilloscope calibrator MARKER output for 1 mS/D. If necessary, adjust oscilloscope
calibrator EDIT FIELD knob for a 0.0% err display indication.
(2) Adjust TI POSITION control to align 1st time marker with 1st vertical graticule
line (extreme left). Adjust R655 LF TIM (fig. 2) to align one time marker per division (R).
(3) Press TI SWP MAG pushbutton. Adjust R658 MAG GAIN (fig. 2) to align one
time marker per division (R).
a
(4) Release TI SWP MAG pushbutton (out), set TI MAIN SEC/DIV switch to .5
nd oscilloscope calibrator MARKER output for 0.5 S/D.
(5) Adjust TI POSITION control to align 1st time marker with 1st vertical graticule
line (extreme left). Adjust C550 HF TIM (fig. 1) to align one time marker per division (R).
Figure 2. Test instrument B board - right-side view.
9