Increase In 1dB / Decrease In
1dB
- Allows one or more input
gains to be controlled by a contact
closure on a programmable input
pin. Increase and Decrease input
gain control goes from a maximum
of 0dB gain to a minimum of 30dB
attenuation, plus “Off”. The gain
change resolution is 1dB. In the
case of Increase In 1dB, each
contact closure will increment the
input(s) gain by 1dB until 0dB is
reached. Decrease In 1dB will
decrement the input(s) gains by
1dB until either “Off” or Rear Panel
Minimum Input Gain is reached. If
the contact closure is pushed and
held, it will continue to increment
or decrement until it is released or
the gain reaches its high or low
limit. The screen shown to the
right indicates that the function of
programmable input 1 is Increase
In 1dB control of inputs 1, 2, 3 and
7.
Analog Out Control
- Allows one
or more output gains to be con
trolled by an analog voltage on a
programmable input pin. Analog
output gain control goes from a
maximum of 0dB gain to a mini
mum of 30dB attenuation, plus
“Off”. The gain change resolution
is 1dB. The Analog Out mode is
ideal for using a pot (or some other
source of analog voltage) to
control output gain. The valid
voltage range in the analog output
mode is 0VDC to 5VDC. 0VDC
corresponds to “Off” (or Rear
Panel Minimum Output Gain, if it is
programmed for less attenuation
than “Off”), and +5VDC corre
sponds to 0dB. In addition, a
SPST toggle switch may be used
as a mute switch. Connect the two
switch contacts to the program
mable input pin and ground. The
outputs will be muted when the
contacts are closed. The screen
shown to the right indicates that
the function of programmable input
1 is analog output control of all
outputs simultaneously.
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