Operation Manual
I-Tech HD DriveCore Series Power Amplifiers
page 42
I-Tech HD DriveCore Series Power Amplifiers
Operation Manual
page 43
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.
7 Advanced Operation
Maximum analog
input
Low +21 dBu (0 dB)
High +15 dBu (+6 dB)
Analog
input
AES
input
Cobranet
input
Analog
input
sensitivity
Source
select
AES input trim
Cobranet input trim
Output
attenuator
Fixed
gain
compensation
Limiters
Amplifier
Low +21 26/32 dB
Hi +15 32/38 dB
Fixed gain
7 Advanced Operation
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.
