Olson Technology LP-OT-RCxx - Manual (Page 5)

Page 5 of 7
INTRODUCTION
The Olson Technology, Inc. Model LP-OT-10-RCxx 1550nm CWDM Return Path Transmitter is a
single-slot module for the LaserPlus optical transmission platform. It is engineered to meet both today’s and
tomorrow’s advanced requirements for return path transmission of advanced upstream applications, with an optical
loss budget to 14dB (>60km) when an 8 wavelength CWDM system is deployed. With an NPR value of 40 dB
over a dynamic range of 15 dB (higher than other vendors with NPRs from 40/10 dB to 35/13 dB), this transmitter
ensures error-free transport of all current return path services (QPSK & 16/64 QAM –requires NPR > 30 dB), as
well as future return path services utilizing sophisticated “HI-PHY” modulation schemes (ODFM & 256 QAM -
requires NPR of 40 dB). The rugged, low-profile, amplitude-modulated Model LP-OT-10-RCxx transmitter
utilizes a high-quality, optically isolated, cooled 1550 nm CWDM laser with an optical output power of 10 mW .
ENVIRONMENTAL CONSIDERATIONS
The LP-OT is specified to operate from 0°C to +50°C. It will probably not require an air-conditioned
environment. It should be mounted in an adequately ventilated area. Like any other electronic equipment, it will
probably have a longer life span if it is not operated at the upper limit of the temperature range. Installation in wet
areas or areas of extremely high humidity should be avoided. Extremely dirty or dusty areas should be avoided if
possible. Objects or debris should not be allowed to block the openings in the LP-OT or LP-CH-16 housing or
fan.
OPTICAL CONNECTORS AND CLEANING
The fiber ends can be damaged by the insertion of contaminated connectors. Some types of customer
damage to connectors are not covered under warranty. Fiber connectors should never be left uncovered.
Prepackaged alcohol wipes are the most convenient means of cleaning optical connectors. Clean alcohol and lint
free wipes or swabs may also be used.
EXTERNAL CONTROLS AND TEST POINTS
The LP-OT has two external DC test points. One reads laser current at 1V per 50mA. A typical laser
current of 25mA would read 0.5V 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.
025-370503 REV X1