TB 9-6625-2240-24
(22) Repeat technique of (21) above for remaining TI VOLTS/DIV switch settings
listed in table 17 (do not readjust standardizer). If optimum square wave presentation
cannot be obtained, perform adjustments listed in table 17.
(23) Connect oscilloscope calibrator CHAN 1 to TI CH1 through 50 Ω
feedthrough termination.
NOTE
Ensure 50 Ω feedthrough termination, wattage, and frequency
ratings are adequate for test below.
(24) Position controls as listed in (a) through (d) below:
(a) Press TRIG MODE AUTO pushbutton (in).
(b) Press X10 MAG pushbutton (in).
(c) Press and release 20 MHz BW/TRIG VIEW pushbutton to full bandwidth.
(d) Press VERT MODE CH1 pushbutton (in).
Table 17. Voltage Compensation
Test instrument
CH1 and CH 2 adjustments
Test
Oscilloscope
(fig. 1) (R)
instrument
calibrator
EDGE
VOLTS/DIV
Tektronix, Type 475
Tektronix, Type 475A
settings
settings
Square
Square corner
Flat top
Flat top
corner
C10 (CH1)1
500
mV pp
5
m
---
---
---
1
C50 (CH2)
C10 (CH1)1
1
V pp
10
m
C36
C37
---
C50 (CH2)2
m2
1
V pp
20
C34
C35
C36
C37
m3
250
mV pp
50
C32
C33
C34
C35
500
mV pp
.1
---
---
C32
C33
V pp4
1.25
.5
C30
C31
---
---
V pp4,5
1.25
1
---
---
C30
C31
1Adjust
for optimum results between square corners and flat tops.
2Remove
termination from setup.
3Remove attenuators from setup.
4Maximum amplitude for oscilloscope calibrator. Make adjustments as best as possible.
5Adjust A TRIGGER for a stable display if required.
NOTE
Ensure oscilloscope calibrator FASTEDG and TDPULSE are
off when performing steps below.
(25) Perform steps (a) through (c) below:
(a) Ensure oscilloscope calibrator EDGE pushbutton green LED is illuminated.
(b) Set TI VOLTS/DIV, TIME/DIV switch settings and oscilloscope calibrator
EDGE output to settings listed in table 18. Use technique of step (c) below for TI switch
settings and oscilloscope calibrator EDGE output settings listed in table 18.
17
