11
Relay Out
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.
RS-232
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.
LED Indicators
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.
(continued, next page)
Relay Out connections.
Refer to text, at left, for
explanation.
