TB 9-6625-2283-35
CAUTION
Keep the optical output connector clean at all times. Dust and
dirt will degrade the optical output power. Keep the connector
capped when it is not being used.
a. Connect TI to multimode test fiber right hand connector, using a 1 meter multimode
jumper cable with biconic connectors.
b. Connect TI to a 115 V ac source. Set POWER switch to ON and allow at least 15
minutes for stabilization.
c. Adjust INTENSITY control until trace is visible on crt.
d. Press FILTER (MEDIUM) pushbutton.
e. Press PULSE (SHORT) pushbutton.
f. Set POWER switch to OFF (in) position.
g. Adjust DIST/DIV control to 50 meters.
h. Press and hold SWEEP pushbutton.
i. Set POWER switch to ON. Release SWEEP pushbutton after the number 150
disappears from the LCD display. (The TI is now in the calibration test mode and the LCD
should display a number between 4900 and 5100).
j. Adjust DIST/CAL control to display 4960 on the LCD.
Do not change this
adjustment during the calibration procedure.
k. Set POWER switch to OFF.
l.
Set POWER switch to
ON.
(This takes the TI out of the
calibration test mode and
returns it to the normal operation mode.)
m. Press READOUT MODE DIST (METERS) pushbutton in. (This puts TI in the
distance measuring mode.)
8. Distance Measurement Accuracy
a. Performance Check
(1) Adjust DIST/DIV control to 500 meters.
(2) Press VERTICAL SCALE 5 dB/DIV pushbutton.
(3) Observe trace on crt.
(4) Press SWEEP pushbutton to obtain new sweep on crt.
(5) Adjust DIST/DIV control to 200 meters to expand trace.
(6) Adjust MARKER control until marker is at the first step from the left on the