Analog Audio Cables And Connectors; Third-Party Options - SMART Board 4000 Series Installation Best Practices

CHAPTER 5
CABLES AND CONNECTORS
Requirement
Are appropriate for
the load current
NOTE
See Cable best practices on page 40 for general guidelines.

Third-party options

Refer to Appendix A: Third-party referrals on page 69 for a list of companies that sell this type of
equipment.

Analog audio cables and connectors

Analog audio cables fall into a few categories:
Category
Unbalanced
43 smarttech.com/kb/171035
Details
Device power cables can be rated for use with different load currents.
Make sure the power cable is rated to safely handle more current than a
connected device will draw. See the specifications for the SMART
product for power consumption information.
If only a power rating is provided, the current can be calculated using
the following formula:
Details
An unbalanced cable features two or more conductors, one for ground
and at least one for signal.
The stereo 3.5 mm cable is a commonly used unbalanced connection. It
has a ground connection (sleeve), a connection for the right stereo
channel (ring), and another for the left (tip).
Unbalanced connections are affordable and ideal for shorter
connections. An unbalanced cable of good quality can provide a
connection of up to 20' (6 m). The main disadvantage of an unbalanced
cable is its susceptibility to electrical interference when using line levels.