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 (516) 931-2800 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 !
AVOID DIRECT EXPOSURE TO BEAM
.
All -7,-8, and -9 Models use laser diodes. These solid-state laser diodes
are located in the optical ports of these units. Laser diodes produce
invisible radiation that may be harmful to human eyes. Never look
directly into the optical port of any fiber optic unit designed to operate
with single-mode optical fiber.
NOT FOR LIFE SUPPORT SYSTEMS
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.
119740 Rev D
OPERATING INSTRUCTIONS
Fiber Optic TTL / Balanced
Transmission System
DT-7901, DR-7901,
DX-7901
The DT/DR-7901 system consists of the DT-7901 transmitter
and DR-7901 receiver or two DX-7901 transceivers. This
system will transmit standard medium speed TTL signals from
DC to 50 Mb/s, or Balanced signals 2Mb/s-50Mb/s
Technical Specifications
Bandwidth
DC-50 Mb/s(TTL), 2M-50Mb/s (Balanced)
Protocols supported
TTL 50 ohms, TTL Hi-Z or Balanced
Rise / Fall Time
12 nanoseconds minimum
Bit-error Rate
1 x 10-9 (worse case)
Propagation delay Balanced
22.5ns (-1-3 models), 14.5ns (-7,-9)
Propagation delay TTL
20.5ns (-1-3 models), 12.5ns (-7,-9)
Signal voltage range
0-5V (TTL), 0.5V-5V (Balanced)
Signal Connectors
BNC, Removable Terminal Block
Operating Wavelength
850 (-1), 1300 (-3,-7), 1550 (-9)
Optical Output
-15 dBm typical
Optical Loss Budget
0 – 10 dB
Fibers Accommodated
1 Multimode (-1,-3), 1 Single-mode (-7,-9)
Temperature Range
-35º to +75ºC
Power Requirements
11-24 VAC/DC @250 mA
Physical Size (mm)
5.0”(127)L x 1.0” (25.4)W x 3.0”(7)D
All specifications measured with 1Km of 62.5u multimode fiber.
All specifications are subject to change without prior notice.
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