TB 9-6625-1200-24
b. Adjustments
(1) Set oscilloscope calibrator VOLTAGE output for an Err display of 0.0 percent.
(2) Adjust CH 1 GAIN for a 4 division display on TI.
(3) Adjust CH 2 GAIN for a 4 division display on TI.
9. Volts/Div Compensation
a. Performance Check
(1) Set CH1-CH2 mode switch to CH1 and CH1 VOLTS/DIV switch to .05.
(2) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 output to TI CH
1 input connector, using standardizer. Select oscilloscope calibrator channel 1 output.
(3) Set TIME/DIV switch to .2 mSEC.
(4) Set oscilloscope calibrator EDGE mode for an output of 200 mV at 1 kHz and
adjust amplitude for 4 divisions of vertical display on TI.
(5) Adjust TI TRIGGERING LEVEL control for a stable display.
(6) For CH 1 only, adjust standardizer for optimum square wave (square corners
and flat tops).
NOTE
If standardizer cannot be properly adjusted, adjust C12 (fig. 1) to
midrange and readjust standardizer for optimum waveform (R).
(7) Repeat technique of (4) and (5) above for CH 1 VOLTS/DIV switch settings
listed in table 5 using oscilloscope calibrator VOLTAGE mode. If display does not have
square corners and flat tops, perform corresponding adjustments.
Table 5. Volts/Div Compensation
Oscilloscope
calibrator
Test instrument
Test instrument adjustments (fig. 1)
CH1/CH2
CH 1
CH 2
VOLTAGE
VOLTS/DIV
Square
Flat top
Square
settings
Flat top (R)
corner (R)
corner (R)
settings
(R)
200 mV
0.05
---
---
---
C112
400 mV
0.1
C3C
C3B
C103C
C103B
800 mV
0.2
C4C
C4B
C104C
C104B
2V
0.5
C5C
C5B
C105C
C105B
20 V
5
C6C
C6B
C106C
C106B
