
Chapter 2
Installation
17
Setting audio attenuation
When using a KTD-336 audio converter, set the attenuation jumpers to the ON position (
Figure 13
). The
attenuation jumpers are located on the audio/IO card, which is attached to the keypad’s base plate. When not
using an audio converter, leave the attenuation jumpers in their default OFF position.
Figure 13. Audio I/O board with attenuation jumpers
Back of keypad
(with cable ports)
Attenuation
jumpers
Front of keypad
Summary of Contents for KTD-405
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