Industrial Fiber Optics IF-FOM, Руководство оператора

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INITIAL CHECK OUT
1. Unwrap all components from in the protective packaging. Do not throw away the
12 x 6 x 4 tuck-top box, as it can be used to store the Fiber Optic Test Set.
2. Check that the Fiber Optic Test Set is complete and in good, undamaged
condition. The shipping box should contain the test set, two 9-volt batteries, and a
connectorized test cable with a calibration value.
3. Install the batteries following the procedure found in the section titled SERVICE
AND MAINTENANCE.
4. Remove the protective caps from the Detector and LED receptacles. Turn the
“Display Selector Switch” to “20 µW”.
5. Turn the test set on by pressing the “ON/OFF” switch and observe that the LED
light source illuminates for approximately one second. Numbers on the LCD
display should now be visible.
6. Remove the protective caps from the ends of the supplied test cable. Insert the test
cable onto the “DETECTOR” and “LED” front panel receptacles. Note that the
receptacles have a key slot to accept a raised notch on the test cable connector.
Line up the notch with the slot, then push the cable connector down into the
receptacle and twist until it is locked into position.
7. Observe the digital LCD display and note if the reading is zero (± 0.02 µW).
Note:
Do not press the “LED ACTIVATION” button during this zero check. If this is
done inadvertently, turn the test set off, then back on to reset the LED circuit.
If
the reading is not zero, refer to the section titled SERVICE AND MAINTENANCE
and follow the “Zeroing” procedure.
8. Press the “LED ACTIVATION” button, then wait approximately one minute
for the LED source to stabilize. Observe the digital LCD display and note if the
reading is within ± 10% of the calibration value supplied with the test cable.
If the reading is outside the limits, refer to the section titled SERVICE AND
MAINTENANCE and follow the LED Power Adjustment procedure.
9. Turn off the Fiber Optic Test Set by pressing the “ON/OFF” switch. Remove the
test cable connectors from the front panel receptacles, then replace the protective
caps on the receptacles and test cable.
You have now verifi ed that the Fiber Optic Test Set has arrived in good physical condition
and checked for proper electrical/optical operation. The following section describes sample
procedures to measure total transmitted output power and transmission loss (attenuation) in
fi ber optic cable.