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What Can I Connect to the DataPort?
OPERATION: USING THE QSC DATAPORT CONNECTIONS
General Guidelines to using the DataPorts on the CX168
1. Each channel pair ( Ch.1-2, Ch.3-4, Ch.5-6, and Ch.7-8) has its own dedicated DataPort connector that applies
control and monitoring functions to its specific channel pair.
2. The DataPort for channels 1 and 2 has a special function on the CX168. It is the ‘master’ DataPort for controlling
AND reporting power supply status of the amplifier. It is only possible to control and report the status of the power
supply using the Ch.1 & Ch.2 DataPort.
3. In order for the Ch.1 & Ch.2 DataPort to control the power status of the amplifier, the front-panel power switch
MUST be in the ON position. If the power switch is in the ‘off’ position, the amplifier will not respond to any com-
mands sent to its Ch.1 & Ch.2 DataPort.
4. The DataPort connection can be used for amplifier status monitoring only, using the terminal block inputs for
supplying input signals to the amplifier. Ensure that the DataPort connection supplies NO INPUT SIGNAL when
operating in this fashion. If signal is applied to both the DataPort and the terminal block input connector at the same
time, the signals will be summed and amplified. The result may be undesirable.
5. If using the DataPort for supplying the audio input signals to the amplifier, we don’t recommend using the terminal
block input connectors, even if they are connected to non-operating audio sources. The DataPort and terminal block
inputs are connected in parallel and isolated by about 20k ohms of resistance. Even with this isolation, it is possible
that connection to other signal sources may significantly alter the input impedance at the DataPort. This could affect
output levels as connections are altered.
6. If using the DataPort for supplying the audio input signals to the amplifier, do not use the unused terminal block
inputs for daisy-chaining the DataPort signals to other channel pairs or other amplifiers. The DataPort device
supplying the audio signal will not accurately report gain and levels will be effected.
7. The heat sink temperatures of the CX168 are reported on the first channel of each channel pair’s DataPort. In other
words, to monitor all four heat sink temperatures, all four DataPorts must be connected to the monitoring device (such
as QSC’s CM16a). Temperatures will be reported on channels 1, 3, 5 and 7.
Consult your QSC representative for up-to-date accessory compatibility. QSC has several DataPort-based accessories
available like the:
CM16a Amplifier Controller & Monitor
DSP-3 Digital Signal Processing Module
DSP -30 Digital Signal Processor
XC-3 Crossover
SF-3 Subwoofer Filter
LF-3 Low Frequency Filter
DCM Crossovers & Monitors