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1.3.1 Input Channel Settings
The CA-500 CA-Config interface will provide access to Channel 1 In only, whereas all
channels will be active for CA-1000 and CA-1050 products. For each active channel, the
column of push buttons provide the following functions:
Enable / Disable
turns the channel on or off
Stereo / Mono
set the channel to stereo or mono input (channels 1-3 only)
Gain + / Gain Use this setting to normalize volume across multiple inputs, with 32 steps.
Ignore PA
3
available as an input to channel 4 (mono) only, this feature detects activity
on a PA system and automatically triggers an automated mute on input channels 1, 2 and
3. The PA Detect circuit is triggered when the corresponding input on channel 4 exceeds
the defined Threshold setting. This button rotates between three states:
o
Ignore PA
do nothing
o
PA w/norm
upon PA detect, mute channels 1,2 and 3 and amplify channel 4 input
as per most recent (current) channel 4 settings. Note that current amplifier
settings may include low volume (determined by channel 4 Gain and Master
Volume) and/or mute, either of which would compromise the effectiveness of the
PA announcement.
o
PA w/preset
upon PA detect, mute channels 1,2 and 3 and amplify channel 4
input as per a preset channel 4 PA volume. Use the Set PA Volume button to
define the PA preset volume condition, as per
Master Out settings. Note that when using the PA
w/preset condition, channel 4 mute is automatically
turned off upon detection of a PA input.
In addition,
o
The PA Restore
pull down defines the amount of time the amplifier waits between
the end of an active PA signal and un-muting other channels
Mic Off / Mic On
use to define whether a microphone is connected as the input device to
the channel. Note that the system allows for only a single microphone input.
3
Microphone detect and PA detect are mutually exclusive channel 4 conditions
