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Connector and Indicator Descriptions
CH 1 INPUT, CH 2 INPUT: balanced female XLR's.
If not using the DataPort for inputs, these are where
you connect the line-level audio inputs to the DSP-4.
They are electronically balanced with an input
impedance of 8.3k Ohms. If used in an unbalanced
configuration, the input impedance is 3.7k Ohms.
Input sensitivity is software
selectable.
SIGNAL indicator: This
green LED illuminates when
the DSP-4 detects an input
signal on either channel.
Dual brightness levels indi-
cate signal level. At -40dB
fs, it will light dimly; at -
20dB fs it will light brightly.
RS-232: DB-9 female jack.
Use for serial cable connec-
tion between the DSP-4 and
the computer. Connection is
required only for setup and
real-time control of the
module. Connection need
not be maintained for use.
4
POWER indicator: This
blue LED illuminates when
the module has power
properly applied.
CH 1 OUTPUT, CH 2 OUTPUT: pseudo-balanced male
XLR's. These outputs provide post-DSP (processed) signal
from the DSP-4 for downstream devices (amplifiers, mon-
itoring busses, daisy-chaining the processed signal to a
second amplifier). When using with non-DataPort amplifi-
ers, these outputs should be connected to your amplifier's
input connectors.
Chassis Lance: Use
this lance to secure
accessory power cord
(if used) with a wire tie.
EXTERNAL POWER:
2.5mm barrel connector-
Center (+), Outer(-), 15
VDC, 300 mA. Use if your
amplifier does not supply
the required operating volt-
age from its DataPort.
DATAPORT: This is the
"input" DataPort. If using
with QSC DataPort prod-
ucts that supply audio
inputs or provide amplifier
control & monitoring, this
is where they are con-
nected. If using this
DataPort for audio inputs,
do not apply input signal to
the XLR inputs.
DATAPORT (unlabeled):
This is the "output" DataPort.
If the DSP-4 is directly
mounted on a 2-RU, 2 channel
QSC DataPort equipped ampli-
fier, this connector plugs into
the amplifier's DataPort con-
nector.
If used with 3-RU, 4-, or 8-
channel QSC DataPort
equipped amplifiers, the DSP-
4 module will need to be
remotely mounted and a
male-female DataPort cable
used to interconnect the amp
& module.
If used with a non-DataPort
amp (QSC or other), this con-
nector will not be used.
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