A D 2 4 0 2 - 9 6 - O P E R A T I N G M A N U A L
“Single Cable” 88.2 and 96 kHz Modes
The
“Single Cable”
88.2 and 96 kHz modes are only compatible with digital recorders that are
specifically designed for 88.2 and 96 kHz. In this mode, a channel pair is transmitted on a single
digital cable, at a frame rate equal to the sampling rate.
Analog Inputs
The analog inputs support balanced or unbalanced inputs. Input sensitivity is adjustable
in
2 dB steps. Maximum sensitivity is +14 dBu at full scale (0 dBFS). Minimum sensitivity is +24
dBu at full scale (0 dBFS).
Sensitivities greater than +14 dBu have
not
been included since they would compromise the
dynamic range of the AD2402-96.
Balanced inputs are included since they are the best method of signal interconnection to a
microphone preamplifier, whether the preamplifier has balanced or unbalanced outputs. For
more information on proper cable wiring to receive a signal from an unbalanced source, known
as forward referencing, see page 15 of the Benchmark Media Systems, Inc. application note: “A
Clean Audio Installation Guide”.
The Clean Audio Installation Guide PDF file is available for download from our web site. The
URL is
http://www.benchmarkmedia.com/pdf/caig.pdf
.
Balanced Inputs: Pin 1 = Shield, Pin 2 =
-
Signal, and Pin 3 =
+
Signal
(revised)
.
Unbalanced Inputs: Pin 1 = Shield, Pin 2 = Signal
Ground
, Pin 3 = Signa
l (revised)
.
Caution: Connections from unbalanced outputs will not function properly if
pin
2
on the input to the AD2402-96 is left floating
(revised)
.
Meters
Each conversion channel is equipped with a
multi-function 9-segment LED meter
. A
“Meter
Scale”
switch selects either a 6-dB/step scale or a 1-dB/step scale, and controls the
peak hold
8
