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CHAPTER 4: Checklist of System Components
4.2.5 T
O
C
ONNECT THE
L
OCAL
U
NIT TO THE
R
EMOTE
U
NIT
To interconnect the Local and Remote Units of the Micro Extender, you’ll need
industry-standard structured cabling (Category 5 UTP or STP, 4-pair) terminated
with RJ-45 plugs. This cable is not included with the Extender. Order CAT5 patch
cables such as our product code EYN737MS or CAT5 bulk cable such as our
EYN840A. The bulk cable should be terminated with high-quality RJ-45 plugs such
as those included in our FM732 25-pack.
CAUTION!
This cable must be solid-core type; stranded patch cable will give poor
results over longer distances. The pairing of the cable and pinning of its
connectors must be in accordance with EIA/TIA-568A or (preferably)
EIA/TIA-568B. (Refer to the wiring chart in the Appendix. Please note that
failure to wire the twisted pairs
correctly will dramatically impair video
quality and possibly prevent correct operation.)
We don’t recommend using CAT5e cable, although it might perform well
in some applications. Avoid using “Level 6” or “Level 7” cables, or other
types of cable rated for data rates higher than 100 Mbps (bandwidths higher
than 100 MHz). This is because the wires in these cables are twisted much
more tightly than those in regular CAT5, which is great for high-speed data
but really bad for video signals.
Also, even though your network might use the same type of 4-wire
twisted-pair cabling, do not connect the Micro Extender to 10BASE-T
Ethernet devices or any other network equipment. Doing so will virtually
destroy the Extender’s circuitry and could also damage the attached
equipment.
The Micro Extender is designed for use up to a maximum cable length of 50 m
(160 ft.). At this length the video quality should be acceptable even at a screen
resolution of 1280 x 1024 pixels.
Although a single continuous length of interconnect cable is preferable, it’s
possible to operate a Micro Extender system if the Local and Remote Units are
connected through multiple patch panels. However, the more patch panels the
cable is routed through, the greater the probability that the video signal will be
degraded.
NOTE
The Micro Extender has been tested and found to work, in certain
situations, with 4-pair Category 3 cable or with four pairs of 25-pair UTP
trunk cables instead of 4-pair Category 5 cable. We do not recommend
such installations; if you want to experiment with them, do so at your
own risk.