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FCC/IC RFI STATEMENTS

FEDERAL COMMUNICATIONS COMMISSION

AND

CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

Class B Digital Device.

This equipment has been tested and found to comply with

the limits for a Class B computing device pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or telephone
reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

• Consult an experienced radio/TV technician for help.

Caution:

Changes or modifications not expressly approved by the party responsible

for compliance could void the user’s authority to operate the equipment.

To meet FCC requirements, shielded cables and power cords are required to
connect this device to a personal computer or other Class B certified device.

This digital apparatus does not exceed the Class B limits for radio noise emission from digital
apparatus set out in the Radio Interference Regulation of the Canadian Department of
Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de classe B prescrites dans le Règlement sur le brouillage
radioélectrique publié par le ministère des Communications du Canada.

Summary of Contents for IC443A

Page 1: ... 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com FEBRUARY 1998 IC443A Video Mono Audio Baluns AUDIO 1 PAIR 1 4 5 Video Mono Audio Balun VIDEO 1 PAIR 4 7 8 AUDIO 2 PAIR 2 3 6 VIDEO 2 PAIR 3 1 2 ...

Page 2: ...o correct the interference by one of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult an experienced radio TV technician for help Caution Changes or modifications not expressly approved by the party responsible ...

Page 3: ...MONO AUDIO BALUNS Contents Chapter Page 1 Specifications 5 2 Introduction 7 3 Installation 8 4 Troubleshooting 11 4 1 Things to Try if a Problem Occurs 11 4 2 Calling Black Box 12 4 3 Shipping and Packaging 12 ...

Page 4: ...d devices Video 1 Standard 75 ohm coaxial cable with a BNC male connector on the Balun end Audio 2 Standard RCA phono cables Compliance FCC Class B DOC Class MDC classe B CISPR Pub 22 Class B Standard Composite baseband video NTSC PAL or SECAM Impedance Coaxial side 75 ohms Phono side 600 ohms UTP side 100 ohms Bandwidth Video DC to 10 MHz Audio 20 Hz to 50 KHz Maximum RF Input 1 1 volts at 60 Hz ...

Page 5: ...m for black white video and for audio Connectors 1 Shielded RJ 45 female 1 BNC female 2 RCA female RJ 45 Pins Used Pins 1 audio right 2 audio right ground 3 audio left 6 audio left ground 7 video and 8 video ground Temperature Tolerance Operating 32 to 131 F 0 to 55 C Storage 4 to 185 F 20 to 85 C Humidity Tolerance Up to 95 noncondensing Size 2 3 H x 2 4 W x 1 D 5 7 x 6 1 x 2 5 cm Weight 2 8 oz 8...

Page 6: ...hm RCA type phono cables converts the signals and transmits them over UTP cable to the other Balun which converts them back and sends them to their destination If your application needs both sets of signals to travel in the same direction the Baluns can do this too Connect the Video Mono Audio Balun to a site s structured cabling through a modular wall jack in the work area Each Balun has four RCA...

Page 7: ...at the circuit can be identified 4 Verify that the twisted pair circuit you want to use is not already being used for other LAN or telephone equipment CAUTION Do not connect the Video Mono Audio Balun to a telecommunication outlet wired to unrelated equipment Making such a connection may damage the equipment and or the Balun Please make sure that all wiring is straight through pinned Do not mount ...

Page 8: ... 45 Pins 7 and 8 To carry the second video signal the cables must carry a pair pinned to Pins 1 and 2 To carry the first audio signal the cables must carry a pair pinned to Pins 4 and 5 To carrythe second audio signal the cables must carry a pair pinned to Pins 3 and 6 7 Plug the other end of each UTP cable into the appropriate video wall outlet or patch panel When this is done a complete cabling ...

Page 9: ...10 VIDEO MONO AUDIO BALUNS 8 Reconnect and power up the video and audio equipment Your Video Mono Audio Balun system should be ready for continuous operation ...

Page 10: ... Baluns can transmit and receive video signals depends on your cable and your video and audio equipment refer to the Maximum Distance specification in Chapter 1 4 Make sure that the Baluns and all attached cables and equipment are well away from neon lights generators electric motors high voltage lines and other sources of high voltage or high frequency electromagnetic signals 5 Make sure that the...

Page 11: ...ance if you have a complete description including the nature and duration of the problem when the problem occurs the components involved in the problem any particular application that when used appears to create the problem or make it worse the results of any testing you ve already done 4 3 Shipping and Packaging If you need to transport or ship your Video Mono Audio Balun Package it carefully We ...

Page 12: ...NOTES ...

Page 13: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1998 Black Box Corporation All rights reserved ...

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