1. Descreption of OTRD lanch cable box.
OTDR Launch Cable, also name as Pulse Suppressor Cables, Launch
Cords, Launch Leads, Receive Cables or Fiber Rings. It is used to
measure the insertion loss of the near-end and/or far-end
connection of a fiber optic link using an OTDR. When launch cables
are used, faults close to the end of the fiber being measured can
be seen by the OTDR. They do not interfere with the actual fiber
being measured and thus are very secure and proven as a technique
for identifying faults in the total length of fiber from the first
interface to the last.
Optical time domain reflectometer (OTDR) is a necessary fiber optic
testing tool which use light backscattering technologies to analyze
the optical fiber performance. It can test the light loss and
locate the breaks, splices and connectors in fiber optic network.
However, OTDR has "dead zone" which can affect the testing result
if proper measure is not taken. To overcome the limitation of OTDR
dead zone, OTDR launch box is being used. This post will introduce
OTDR launch box for your reference.
Basic of OTDR Launch Box
OTDR launch box, according to its function and working principle,
has a lot of other names, like dead zone box, pulse suppressor,
fiber ring, fiber optic launch cable, etc. How can OTDR launch box
minimize the effect of OTDR dead zone during fiber optic testing?
The following explains the detail.
The dead zone of OTDR, caused by high return level of reflection
and affected by the pulse width, might extend hundred meters from
the OTDR. Full length of optical fiber is suggested to use before
the optical fiber under test. Thus, the receiver of the OTDR can
have enough time to settle. OTDR launch box, which is actually a
long spool of optical fiber inserted between the fiber under test
and OTDR, can ensure that the OTDR dead zone happens in the OTDR
launch box (shown in the following picture). Then, the fiber optic
link under test won't be largely affected by the OTDR dead zone.
OTDR Launch Cable is designed to aid in the testing of fiber optic
cable when using an OTDR to help minimize the effects of the OTDR's
launch pulse on measurement uncertainty. Using a Etayson launch
cable at the beginning of the fiber under test and a OLCB receive
cable at the end of the fiber under test allows the ability to
perform loss measurements on entire length of the fiber. The light
weight unit measures only 6.25” in diameter and 1.25” high and
includes a carabiner clip allowing the unit to be easily attached
to belts, equipment straps and rack mounts. Units are available in
lengths from 100 up to 2000 meters with a choice of a variety of
connectors in order to connect to virtually all OTDR and patch
panel ports. Optic fiber jump cable,OTDR Dead Zone Eliminator,Fiber
Optic OTDR Launch cable box,fiber rings FC/SC/ST/LC(UPC/APC)
2. Features:
♦ Helps make a more precise measurement with an OTDR
♦ Defines insertion loss and reflectance of the near-end connection
♦ Inculdes a durable Metal Retractor making it easy to carry
♦ Built-in management saves space
♦ Will not dent, corrode or conduct electricity
♦ Light Weight
3. Applications:
Widely used with OTDR to help minimize measurement uncertainty
indoor or outdoor.
Test the comprehensive performance of newly installed fiber links
and detect problems in the existing fiber links.
4. Specification:
| Length x Width x Height | 27.5 x 15.3 x 7.6cm Or Customize |
| Fiber Type | G.652D/G.657A |
| Connector Type | FC/SC/LC/ST selectable |
| Polishing Type | PC/APC/UPC selectable |
| Material | Polypropylene |
| Color | Yellow |
| Weight | 1kg(package included ) |
| Operating Temperature | -40℃ to +55℃ |
| Typical Loss | <0.5dB @ 1310nm for 1000 meters |
