TB 9-6625-2251-24
j. Set oscilloscope calibrator to standby. Select VERTICAL MODE, set CH1 to on,
and set CH2 to off. Select CH1 COUPLING/INVERT and set 50 Ohm to off. Verify DC is
set to on.
k. Disconnect equipment setup.
11. Internal and External Trigger Sensitivity Accuracy
NOTE
If TI does not perform as specified, perform adjustments as
indicated in SECTION IV.
a. Select oscilloscope calibrator CHAN 1, and connect oscilloscope calibrator
SOURCE/MEASURE CHAN 1 output through a 50 feedthrough termination to a BNC
dual input coupler. Connect one end of BNC dual input coupler to the TI CH1 input and
remaining end of BNC dual input coupler unconnected.
b. Rotate CH 1 VOLTS/DIV knob for 50 mV indications on crt display.
c. Set oscilloscope calibrator output for LEVEL SINE at amplitude and frequency
listed in the first row of table 11.
d. Select SETUP AUTO.
NOTE
After auto setup sequence is completed, if necessary, adjust CH
1 VOLTS/DIV control for 50 mV indications on crt and
TRIGGER MODE to NORMAL.
e. Adjust oscilloscope calibrator knob located below the EDIT FIELD key on the
oscilloscope calibrator for 4 divisions peak-to-peak signal displayed on TI crt.
f. Rotate CH 1 VOLTS/DIV knob for 200 mV indications on crt. Rotate TRIGGER
LEVEL control and verify TI will trigger.
g. Repeat technique of b through f above substituting frequencies in the next 2 rows of
h. Rotate CH 1 VOLTS/DIV knob for 50 mV indications on crt display.
i. Set oscilloscope calibrator output for LEVEL SINE amplitude and frequency listed
in the last row of table 11. Rotate TI TRIGGER LEVEL knob as necessary until TRIG'D
indicator illuminates.
Select SETUP AUTO.
j.
NOTE
After auto setup sequence is completed, if necessary, rotate CH
1 VOLTS/DIV knob for 50 mV indications on CRT.
k. Select STORAGE ACQUIRE and set REPET to on. Adjust oscilloscope calibrator
knob locate below the EDIT FIELD key for 6 divisions peak-to-peak signal displayed on TI
crt.