Olson Technology OTLT-87XX-40-SA User Manual
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This can cause RF radiation and ingress problems. The internal cooling is also reduced when
uncovered.
Be sure to replace and tighten all top cover screws. Oscillation or RF radiation can be caused by
loose or missing screws. There is no user adjustable internal laser power adjustment. Any change
to the laser power will result in poorer modulation characteristics and reduced link performance.
EXTERNAL CONTROLS AND TEST POINTS
There are two external DC test points. One reads laser current at 1V per 50mA. A typical laser
current of 30mA would read 0.6V at this test point. The laser power test point is 0.1V per mW.
This is for historical tracking. The optical power meter is a much more accurate means of
measuring power. Both of these test points should be measured with a high impedance voltmeter.
Mount the unit and apply power. The laser is temperature controlled. The unit will operate
INITIAL SETUP
immediately after turn on, but requires about 5 minutes to temperature stabilize. Measure and
record the optical output with a power meter. Measure and record the laser current and optical
power readings at the external test points.
ACCESSORIES
Replacement Fan Assembly
OTLL-FANKIT
Optical Attenuators
OTOA-XXXX
Rack Mount Kit (Holds 3 OTLT-87XX)
OTLL-RMKIT-1
SC/APC to FC/APC Optical Connector Adapter
OTLL-SCFCKIT
DESCRIPTION
MODEL
025-000538 REV 1
4/06/09
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