TB 9-6625-1176-24
Table 8. Pulse Amplitude Accuracy Check
Test instrument
Oscilloscope indications
AMPLITUDE
VERNIER
INT LOAD OFF
INT LOAD ON
range
dial
(V)
(V)
pushbuttons
settings
Min
Max
30-100
10
90
110
45
55
10-30
3
27
33
13.5
16.5
10-30
1
9
11
4.5
5.5
0.3-1
3
0.27
0.33
---
---
0.3-1
10
0.9
1.1
---
---
1-3
3
2.7
3.3
---
---
1-3
1
.9
1.1
---
---
3-10
3
2.7
3.3
---
---
3-10
4
3.6
4.4
---
---
3-10
5
4.5
5.5
---
---
3-10
6
5.4
6.6
---
---
3-10
7
6.3
7.7
---
---
3-10
8
7.2
8.8
---
---
3-10
9
8.1
9.9
---
---
3-10
10
9
11
---
---
Figure 4. Preshoot, overshoot, and ringing characteristics.
display on oscilloscope (R).
(3) Set AMPLITUDE VERNIER dial to 10 and adjust R462 (fig. 2) for a 105 V
pulse amplitude display on oscilloscope (R).
(4) Repeat (2) and (3) above for best in tolerance condition.
(5) Press AMPLITUDE 10 - 30 pushbutton and set AMPLITUDE VERNIER dial
to 1. Oscilloscope will display a pulse amplitude between 9 and 11 V.
(6) Set AMPLITUDE VERNIER dial fully ccw. If oscilloscope does not display a
pulse amplitude of less than 10 V, readjust R457 (fig. 2).
15
