Crown I-Tech 4x3500HD DriveCore Series Operation Manual page 22

7 Advanced Operation
7.7.18 Signal Generator
All channels share a noise generator that allows
noise to be mixed into the audio signal. This is useful
for noise masking applications and testing. Each
channel has the following controls:
• Noise On/Off: Turns the noise generator on or off.
• Noise Type: Selects full-spectrum white noise or
pink noise.
• Master: Sets the noise level with a fader.
The sine-wave signal generator lets you mix a
single tone into the audio signal. Its controls are listed
below:
• Sine Frequency: Sets the frequency anywhere
from 20Hz to 20kHz.
The noise generator and sine-wave generator cannot be
used at the same time.
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I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers
7 Advanced Operation
Operation Manual Operation Manual
Maximum analog
input
Low +21 dBu (0 dB)
High +15 dBu (+6 dB)
Analog
input
Source
select
Analog
input
AES input trim
sensitivity
AES
input
Cobranet input trim
Cobranet
input
Figure 7.3 The Various Gain Settings in the I-Tech HD
7.7.19 Fixed-Gain Mode in the I-Tech HD
Fixed-gain mode makes any I-Tech HD model have the same gain, regardless
of output power.
To do that, fixed-gain mode sets the Analog Input Sensitivity to 0 dB
gain, then adjusts the Fixed Gain Compensation fader, and the Maxi-
mum Analog Input, to achieve 26 or 32 dB of gain (if the Maximum Analog
Input is set Low), or to achieve 32 or 38 dB of gain (if the Maximum Analog
Input is set High), no matter what model the amplifier is.
However, In fixed-gain mode, the input trims (Analog, AES, CobraNet) can
still be adjusted.
Fixed gain
Low +21 26/32 dB
Hi +15 32/38 dB
Fixed
Output
gain
attenuator
compensation
Limiters Amplifier
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