KI 7010B-UM-11
20
MAINTENANCE
This instrument contains static sensitive devices. Anti-static handling
procedures should be observed at all times when handling internal
circuits.
Please note there are no user adjustable internal components, fuses,
or calibration features. If using a soldering iron, be certain never to
touch it onto the optical fibers, since damage to the plastic coating will
cause subsequent fiber breakage.
Maintenance
CAUTION!
Do not open unless the warranty has expired, and you are
authorised to do so. Opening the unit will invalidate any warranty
claim. The optical attenuator module is sealed and not accessible. A
problem with the optical module will require return to Kingfisher
International for repair.
The linear servo motor is geared through a sealed high reduction
gearbox. Position feedback is taken from the attenuator vane. The
entire servo system has been designed to be very robust and with
plenty of spare torque to overcome sticky oil and other start-up
problems. Remaining problem that the user might be able to service is
mechanical parts coming loose.
Opening the Instrument:
•
Use static protected procedures.
•
Remove the batteries, and leave the battery cover open.
•
Pull open the optical connector covers.
•
Place the instrument face down on a soft mat, and undo the 6
screws in the rear housing.
•
The instrument can now be gently pulled apart.
•
The instrument will come into two halves joined by a ribbon
cable. The optical section is located in the bottom half, with the
microprocessor, supply, calibration constants and controls in
the top half.
•
Hinged display cover removal can be done at this point.
•
The ribbon cable can be disengaged to completely separate
the instrument halves.
•
Further disassembly from this stage should be easily apparent
to a technician.
General electrical parameters are as follows: Vss to Vcc = 3.3 V,
Battery power down current about 0.3 mA, active current about 11 mA,
motor current is very difficult to measure, but is typically about 150 mA.
•
Do not attempt to dismantle the optical module, as it contains
extremely precisely aligned optical components.
•
Re-assembly is the reverse of the above procedure.
Summary of Contents for KI 7010B Series
Page 1: ...OPERATION MAINTENANCE GUIDE KI 7010B Series Automated Variable Optical Attenuator ...
Page 5: ...KI 7010B UM 11 3 KI7000B SERIES AUTOMATED VARIABLE OPTICAL ATTENUATOR ...
Page 32: ...KI 7010B UM 11 30 ...
Page 34: ...KI 7010B UM 11 32 NOTES ...
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