This indicator lights red when the current ambient noise
level exceeds the THRESHOLD. It light green when the
ambient noise level is below THRESHOLD.
1.0:1
0.25:1...4:
1
Indicates by how much the level of the program signal is
amplified when the ambient noise level rises by 1 dB.
-30 dB
-30... 30
dB
Defines the (minimum) level of the output signal when the
ambient noise level is low (below THRESHOLD).
+30 dB
-30...30
dB
Defines the maximum level of the output signal when the
ambient noise level is high.
1000 ms 10...3000
ms
Time constant for increasing the program signal level when
the ambient noise level continuously exceeds the
THRESHOLD. The time until the new signal level is reached
is approx. 5-times the set response time.
1000 ms 10...3000
ms
Time constant for decreasing the program signal level
when the ambient noise level is continuously below the
THRESHOLD.
10 ms
10...1000
ms
HOLD defines how long the program signal is maintained
(amplified) when the ambient noise level falls below the
THRESHOLD.
10 ms
10...3000
ms
RELEASE defines how long it takes until the program signal
level is controlled back to GAIN MIN after the HOLD time
has passed.
Clicking on FREEZE GAIN memorizes the program signal’s
current gain. The is maintained even if the ambient noise
level changes.
ANALOG LINE INPUTS
The Analog Line Inputs DSP block provides access to the eight analog inputs of an AI-1 Analog Input
card. Establishing independent settings for each input channel is possible. A fader with ramping function as well as
Mute and Invert buttons serve as controls. Each input channel has its individual level meter. Adjacent channels can be
linked together using the LINK button. This allows for the convenient synchronous setting of several input channels,
e.g. for stereo signals.
Each input channel has pilot tone detection, which, when activated, offers permanent monitoring of the output and the
connecting audio cable of an external audio device. Activating and configuring pilot tone detection is possible in off-line
mode from the Advanced Control window.
IRIS-Net
DIGITAL MATRIX | en 372
Bosch Security Systems B.V.
User Manual
2017.05 | 3.20 | F.01U.119.956