Industrial Fiber Optics IF-FOM, Руководство оператора

Страница: 22 / 26

– 16 –
SERVICE AND MAINTENANCE
The only service and maintenance that the Fiber Optic Test Set should require is battery
replacement, “zeroing”, and LED power adjustment. Instructions for these procedures
follow. All other adjustments have been made by Industrial Fiber Optics.
Battery Installation Procedure
The recommended batteries for the Fiber Optic Test Set are standard, heavy-duty or alkaline
9-volt batteries. See Table 2 for the part numbers of major battery manufacturers.
Do not
use nickel-cadmium batteries in this meter because their lower cell voltages will
produce inaccurate readings. Contact the factory if in doubt regarding proper
battery selection.
1. Remove the four screws at the corners of the Fiber Optic Test Set front panel.
2. Carefully lift the front panel from the test set chassis and place it on a table or
bench face down.
3. To remove a battery from its holder, lift the rear portion (end without the
terminals) upward until the battery unsnaps from the holder terminal connections.
4. Remove any protective packaging from the replacement battery.
5. Line up the replacement battery terminals to ensure proper polarity in the holder,
then securely push the battery into place. Check that the battery holder and 9-volt
battery terminals are fully engaged. When the battery is properly positioned it will
be level with and reside just below the sides of the battery holder.
6. Install the other 9-volt battery.
7. Place the front panel back onto the test set chassis. Replace the four screws in the
corners of the front panel and tighten them securely.
8. Press the “ON/OFF” switch and check for proper operation. If necessary, perform
the INITIAL CHECK OUT procedure contained in this manual.
“Zeroing” Procedure
Periodically it may become necessary to adjust the LCD Display indication so that it reads
“zero” in the absence of light on the radiometer. “Zeroing” the radiometer can be done
using the following procedure.
1. Install the protective cap on the “DETECTOR” receptacle.
2. Turn the “DISPLAY SELECTOR SWITCH” to the range you’ll be using, then turn
the test set on by pressing the “ON/OFF” switch. Allow one minute for the meter
to stabilize.