QSC Audio DSP 322UA Manual Do Utilizador

Two sets of relay contacts are provided, RELAY OUT 1 and RELAY OUT 
2. Contacts are floating and rated for 30VDC, 1A. There is one common 
terminal, one normally-closed contact terminal and one normally-open 
contact terminal. These are labeled as C, NC and NO on the rear panel. 
When the relay is not energized, the C terminal is connected to the NC 
terminal and the NO terminal is not connected; when the relay is ener-
gized the C to NC connection is opened and the C to NO connection is 
closed. 

The RS-232 is a utility serial port for accessing certain diagnostic fea-
tures and setup. Connect to an available COM port on your PC and com-
municate using a terminal control program such as Windows 
Hyperterminal.

Use a normal serial data cable with a DB-9 male plug to connect to the 
DSP 322ua. To connect the cable, orient the connector properly, then 
push into the receptacle until it is firmly seated; tighten the retaining 
screws “finger tight”. Communications should be 9600 baud, no parity, 
8 data bits, 1 stop bit, and flow control Xon/Xoff.

When the DSP 322ua is plugged into a properly functioning AC outlet, 
it will power up and briefly display a welcome screen on the LCD dis-
play.

POWER Indicator- This blue indicator illuminates when the DSP 
322ua is plugged into a properly functioning AC source. There is no 
power switch on the DSP 322ua. This helps to prevent accidental sys-
tem shutdowns.

DIAGNOSTIC Indicator- This red diagnostic LED reports several pos-
sible operational conditions. During boot-up, it is used to continually 
blink a “dot-dash” pattern if the power-on memory self-test fails. Dur-
ing normal operation, if any non-recoverable system fault occurs, the 
diagnostic indicator will remain on, requiring a power restart. If this 
condition persists, contact QSC’s Technical Services for assistance.

The diagnostic LED is also used to indicate an update is in progress 
during a remote firmware update cycle. First, the LED will blink slowly, 
indicating the memory erase cycle, then it will blink rapidly, indicating 
the memory write cycle. NOTE! During a firmware update, it is 
critical the unit remain powered on for the entire process in 
order to complete successfully.

The diagnostic LED may also be controlled by using the QSControl.net 
software. This feature is particularly helpful for identifying a particular 
unit.

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