FOCUS Enhancements 3.2 user manual Preventing Cabling Connection Problems

Troubleshooting

Preventing Cabling and

Connection Problems

The suggestions listed below provide basic tips for preventing or minimizing problems related to cabling and connections to and from the Firefly.

❏Use the best cable you can afford.

❏Use the shortest cables possible.

For composite video, PAL or NTSC, RG-59 cable can be used for distances of up to 20 meters between the video source and the acceptor. No signal deterioration should show on the screen. For longer distances, up to 30 meters, use RG-11 type cable. For s-video, standard, inexpensive cables allow operating distances of 5-7 meters. Very little deterioration is apparent. For component video, RG-59 cables are suitable for up to 10 meters. For longer distances, up to 20-25 meters, a better cable should be used, such as RG-11.

❏Check that impedance of the cable really matches your application. Firefly is terminated at 75 ohms.

❏Check the connectors on the cables. Poor quality connectors may have worse effects than the cables themselves.

❏Use appropriate amplifiers if needed. Because Firefly-SC uses unbalanced audio, it is recommended that distances over 10 meters use a “Audio Line Amp/Balancer”, such as Radio Design Labs “Stick On”.

❏Keep cables away from sources of interference - electric motors, main cables, transmitters, light dimmers, etc.

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