Black Box IC568A User manual

Specifications
Specifications
Environment S-Video equipment
Devices DVD players, VCR, satellite receivers, MPEG players, laptops,
notebooks, monitors, LCD projectors, CCD cameras, video switchers,
sequencers, digital video servers, video multiplexers, S-Video splitters,
S-Video converters and other S-Video equipment.
Transmission Transparent to the user.
S-Video Audio
Bandwidth DC to 6 MHz 20 Hz to 20 KHz
Impedance 75 ohms 600 ohms min.
Maximum Input 1.1Vp-p1.1Vp-p
Insertion Loss Less than 2 dB per pair over the
frequency range from DC to 6
MHz
Less than 2 dB per pair over the
frequency range.
Return Loss Better than 15 dB over the
frequency range N/A
Common Mode Rejection Greater than 40 dB over the
frequency range Greater than 60 dB @ 1 KHz Greater than 40 dB over the
frequency and distance range
Max. Distance –Cat 5
UTP 1,000 ft. (305m) 3,250 ft (990m)
Pin Configuration (RJ45)
EIA 568 A or B S-Video Luma: pins 7[R] &8 [T] S-Video Chroma: pins 4[R] & 5 [T]
Reverse Polarity Sensitive
Audio 1: pins 1[R] & 2 [T]
Audio 2: pins 3 [R] & 6 [T]
Cable –UTP
24AWG or lower solid copper twisted pair wire Impedance: 100 ohms at 1 MHz; Maximum capacitance: 20 pf/foot.
Attenuation: 6.6 dB/1000 ft at 1 MHz
Connectors One (1) 4-pin Mini DIN jack for S-Video
Two (2) RCA audio jacks for stereo audio
One (1) RJ45 for Cat5
Temperature Operating: 0º to 55º C. Storage:-20º to 85º C. Humidity: up to 95%
Enclosure Fire retardant plastic
Dimensions 2.40” x 2.25” x 1.00”(6.1 cm x 5.7 cm x 2.54 cm)
Weight2.1 oz (60 gms)
Warranty Lifetime
Order Information IC568A S-Video/Hi-Fi Balun, Female
© Copyright 2006. Black Box Corporation. All rights reserved
94-000xxx-ASE-000xxx-A
October 2006
S-Video/Hi-Fi Balun (IC568A)
Quick Installation Guide
Overview
The S-Video/Hi-Fi Balun allows one S-Video signal and one hi-fidelity stereo audio
channel to be transmitted via unshielded twisted pair (UTP) cable in a point-to-point
connection for more versatile cabling. Used in pairs, the S-Video/Hi-Fi Balun
eliminates costly and bulky S-Video and audio cable, allowing S-Video equipment to
be connected or moved to any convenient modular outlet. The S-Video/Hi-FiBalun
also works in conjunction with Black Box’s Audio/Video Distribution Hub (IC445A)
to allow S-Video programming to be distributed via UTP. Applications include;
classroom video distribution, commercial and home audio/video systems.
Installation
One (1) pair of baluns are needed to complete one composite stereo audio-video
connection via Cat5 twisted pair. To install the baluns, perform the following steps:
1.Identify the pin configuration of the baluns. Two (2) twisted pairs are required
for S-Video and two (2) twisted pairs are required for stereo analog audio. The
pin configuration follows the EIA/TIA 568A/B standard. The Stereo Hi-Fi
Video Balun is reverse polarity sensitive. Please ensure that wiring is straight-
through (Ring to Ring, Tip to Tip).
2.Plug one (1) balun into the S-Video/stereo audio output of the video source
according to the color code of the RCA cable leads.
3.Plug the second balun into the S-Video/Hi-Fi Balun input of the video screen or
receiver at the remote end.
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-
0746 Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA
15055-1018. Web site: www.blackbox.com E-mail: [email protected]

4.Complete the connection between the two baluns, using standard Cat5 twisted pair
cable and connecting hardware, terminated on RJ45 plugs at both ends. Ensure that
there are no split pairs or taps.
5.Power-on the audio-video equipment. Check the image quality and refer to the
troubleshooting table below if the image quality is unsatisfactory. The following
diagram shows a typical installation.
Troubleshooting
The following tables describe some of the symptoms, probable causes and possible
solutions in respect to the installation of the S-Video/Hi-Fi Balun. If you still cannot
diagnose the problem, please call Black Box Tech Support at 724-746-5500.
Video
Symptom Probable Causes Possible Solutions
No video No continuity in video
link Verify cable continuity between pairs of baluns.
No video Power off Check power supplies of video
equipment.
No video Improper connection
Swapped pairs Check that baluns are connected to correct video inputs and outputs.
Unusual colors Reversed polarity Check wiring and ensure straight-
through polarity
Background
pattern EMI interference Identify possible radiating frequency sources (i.e.; wireless LANs,
switching power supplies) Try to
isolate them from the video
connection. Use shielded twisted pair
grounded at both ends.
Smearing
Exceeded distance Verify cable grade. Use higher grade cable if necessary.
Weak contrast Exceeded distance Verify cable grade. Use higher grade
cable if necessary. Increase contrast
on monitor.
Weak contrast Unusual link attenuation Verify cable distance using ohmmeter
or cable tester.
Image not stable Defective link or
equipment Verify video equipment interface integrity.
Horizontal bars
moving slowly Substantial crosstalk between multiple video
sources
Consecutively turn off other video
sources to determine which video
source is the cause of interference.
Snowy picture Distance is near limit Verify cable grade. Use higher grade
cable if necessary. Reduce color
intensity at monitor.
Audio
Symptom Probable Causes Possible Solutions
Poor audio quality EMI interference. Check that wiring is not too close to
transformers and ballasts.
Split pair Ensure that the UTP pairs are not split
and that each pair of wires is twisted.
No audio No power Check your audio system for power.
Open circuit Check wiring to ensure continuity
Defective balun Change S-Video/Hi-Fi Baluns for
another pair.
Audio phase
cancellation Reversed wires Check for straight-through wiring.
Audio weak Distance specifications
exceeded Check DC loop resistance and verify if distance spec is exceeded. Reduce
cable length or eliminate high-loss
components.