LITEWAY OSS-4121 User manual

WARRANTY
All fiber optic transmission systems, products and accessories
manufactured by Liteway, Inc. and it’s subsidiaries are fully
tested prior to shipment and are warranted against defective
materials and workmanship for a period of five full years from the
date of the original shipment. Should a problem occur, a Return
Material Authorization Number (RMA) must be obtained from
Liteway Inc. at [phone] and the item returned to Liteway,
Inc. 166 Haverford Road, Hicksville, NY 11801, USA, prepaid.
Liteway Inc. will then, at its option repair or replace the defective
item.
Liteway, Inc. maximum liability under this warranty is limited to
the cost of the defective item only. No contingent liabilities of
any kind are either assumed or implied.
Any items returned to Liteway, Inc. that have been misused,
abused, damaged, modified, connected or adjusted in any way
contrary to the instructions furnished by Liteway, Inc. or repaired
by unauthorized personnel will not be covered by this warranty.
Any non-warranty repairs required will be quoted at the current
rate for such services.
Important Notices
CAUTION ! The laser diodes used in all –7 and –9 Fiber Optic
Transmission systems manufactured by Liteway, Inc. utilize
solid-state laser diodes located in the optical ports of these units.
These laser diodes produce invisible radiation which may be
harmful to human eyes. As a result one should never look
directly into the optical port of any fiber optic unit designed to
operate with single-mode optical fiber.
Liteway, Inc. does not authorize or warrant any of its products or
accessories for use in critical life support systems or applications
of any kind.
© Copyright 2017 Liteway, Inc. 126529 Rev C
OPERATING INSTRUCTIONS
Fiber Optic Signal
Sensing System
Model OSS-4121
The OSS-4121 consists of a fiber optic sensor that is employed
to sense the presence of an optical signal in a fiber optic cable
and provide an output that can be used to trigger an external
alarm module or fiber optic switch. The unit can also be preset
to detect specific optical levels.
Technical Specifications
Switching time <10 ms
Back Reflection <50dB
Insertion Loss <2.5dB
Optical Input +26 dBm Maximum, (400 mw)
Optical Sensitivity Selectable from -20 to -38 dBm
Sensitivity Data Rate DC to 3 Gb/s
Operating Wavelength 850/1310 or 1310/1550 nm
Optical Connectors ST, SC or FCPC
Fibers Accommodated 1 Multimode (-1,-3), 1 Single-mode (-7,-9)
Temperature Range -35º to +75ºC
Power Requirements 11-18 VAC/DC @150 ma.
Physical Size (mm) 5.0”(127)L x 1.0” (25.4)W x 3.0”(7)D
All specifications are subject to change without prior notice.

Installation Instructions
The diagram below is a functional diagram of the OSS-4121 fiber
optic signal sensing system.
Optical
Input Optical Output
OSS-4121
External
Select
Signals
External
Output
Signals
Power Detector
Circuitry
Optical Sampler
Power/Output Terminal Block Connections
Pin Function
1 Power input+ (+12 VDC)
2 Power input - (12 VDC return) also case ground
3 Control Signal. Jumper to pin 5 to force unit in alarm
mode when in auto mode.
4 Alarm. Connected to pin 5 (ground) when optical input
signal is lost. Otherwise open.
5 Ground
Be certain to check all connections, settings and voltages before
applying power
Indicator Lights
Indicator Lights when
Pwr Proper power is present.
Alrm The loss of optical signal alarm is activated and
there is no optical signal present
Sig An optical signal is being detected.
126529 Rev C
Front Panel Sensitivity Selector
When in auto mode, the optical switch can be controlled by the
rear control signal or presence of power.
Optical Power (+/- 1.0 dBm) Level Switch Setting
Switch Level Switch Level Switch Level Switch Level
0 test 4 -35.0 8 -32.2 12 -31.0
1 -43.0 5 -34.0 9 -32.0 13 -30.3
2 -39.0 6 -33.0 10 -31.5 14 -30.0
3 -36.0 7 -32.5 11 -31.3 15 -29.8
Signal indicator will flash when signal power level is 0.5 dB <
selected level. Note for 850nm, table sensitivity levels are 3dB
lower
Typical Connections
For use with ALM-1000
For use with Optical Switch