BASIS 922az User Manual

BASIS 922az User Manual
DSP 322ua
8x8 Signal Processor
Hardware Manual
TD-000199-00 rev.B
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to
the presence of uninsulated “dangerous” voltage within the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to humans.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important operating and maintenance (servicing) instructions in this manual.
Electrical energy can perform many useful functions. This unit has been engineered and manufactured to
assure your personal safety. Improper use can result in potential electrical shock or fire hazards. In order
not to defeat the safeguards, observe the following instructions for its installation, use and servicing.
CAUTION: To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside.
Refer servicing to qualified service personnel.
WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.
1- Maximum operating ambient temperature is 50°C (122°F).
2- Never restrict airflow through the device fan or vents. Please insure that the air intake and exhaust
vents are unobstructed.
3- When installing equipment into rack, distribute the units evenly. Otherwise, hazardous conditions
could be created by an uneven weight distribution.
4- Connect the unit only to a properly rated supply circuit. The DSP 322ua is suitable for connection to 100
- 240 VAC, 47 - 440 hertz, with no special considerations other than the appropriate IEC power cord.
5- Reliable Earthing (Grounding) of rack-mounted equipment should be maintained.
NOTE: This equipment has been tested and found to comply with the limits for a class B digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and if not installed and used in accordance to the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by switching the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio or TV technician for help.
© Copyright 2005 QSC Audio Products, Inc. QSC® is a registered trademark of QSC Audio Products, Inc. “QSC” and the QSC logo are registered
with the U.S. Patent and Trademark Office. All trademarks are the property of their respective owners.
Don’t want to read the entire manual? Just
want to dig right in? Go to page 14....
The DSP 322ua provides signal processing needs for an
integrated functioning system. In conjunction with software, the DSP 322ua enables the user to
design, test and deploy professional audio reinforcement
systems ranging in size from one to hundreds of channels.
A standard Windows computer is the principle user-interface for controlling the overall DSP/ system.
However, the DSP 322ua also offers a front panel interface
for accessing critical functions.
A single server computer can support several
clients running QSC's latest Venue Manager software. Thus,
the sound system can be operated via several computers,
roaming wireless laptops, tablets, etc., all at the same time,
from anywhere a connection to the network
is available.
The network can also be managed from a single computer running both the client and the server. Once all
1- Power indicator
2- Diagnostic indicator
3- Network status indicators
4- Sinal presence indicators
5- Multi-function push buttons
6- Display
7- Rotary select/accept knob
8- Safe Mode switch (recessed)
9- Analog outputs
QSControl devices in a system are configured, a computer is
no longer required on that system’s network. All basic functions of the DSP 322ua continue to operate with or without
a control computer connected to the network.
The configurable DSP engine provides all of the functions
necessary to handle the amp/loudspeaker portion of a signal chain, such as very flexible and precise crossovers,
delays, equalization, compression/limiting, etc.
Audio enters a DSP 322ua through the 8 universal analog
inputs. The inputs accept everything from mic to line level
and are equipped with software-selectable +48V phantom
Unlike many configurable DSP boxes, the intrinsic processing latency of the DSP 322ua is both short and fixed at 0.396
milliseconds. With analog inputs and analog outputs, the
total delay is 2.354 milliseconds. The delay does not change
10- mic/line inputs
11- Relay outputs
12- Logic outputs
13- Omni inputs
14- RS-232 port
15- Network status indicators
16- QSControl 10BaseT receptacle
17- IEC power inlet
See page 10 for detailed descriptions.
Introduction (continued)
regardless of the DSP configuration, unless the configuration intentionally adds more delay.
Both software and firmware can be easily updated over the
network. In the future, QSC will be adding new capabilities
to Our latest code releases and access to upto-date information on are available at We invite you to visit us there.
Block Diagram
We are confident that your new DSP 322ua will provide
years of dependable service and we hope it will help you,
the system designer and implementer, to express your creative audio system ideas.
Introduction - Networking the DSP 322ua
Notes on Network System Design:
As with any communications system, the reliability and performance of a local area network (LAN) is intimately related to the
designer's skill and knowledge in implementing a topology that is robust, efficient and standards-compliant. Proper network design is
even more critical in distributed multimedia systems. Therefore, it is important for the system designer to realize that some conventional network practices could have an impact on the ability of the audio control system to provide real-time performance. Although
each network design is unique and may carry its own performance requirements, the following points will assist in building an audio
network that is trouble free and efficient.
First, we recommend designing a network that is to be used exclusively for “” communications. Rest assured, your DSP
322ua has been designed to communicate over standard10Base-T Ethernet using standard network protocols and standard network
hardware. As such, DSP 322ua products are tolerant of conventional data communications services and products such as those that
offer file sharing, e-mail services, and Internet access. However, these conventional data services can consume network resources and
ultimately degrade the performance of your DSP 322ua product. Therefore, we strongly encourage designers to limit traffic on their
audio control network to related communications.
Second, your DSP 322ua should not be installed on the same LAN or “virtual” LAN (VLAN) with distributed audio and/or video services.
While coexistence with conventional data communications services is tolerated to some extent, sharing a network with distributed
audio and/or video is not. Distributed media services can monopolize a network by sourcing high-bandwidth broadcast content to all
end stations. As a result, the performance of unintended recipients suffers. An experienced designer can apply techniques such as data
filtering to block media content, but the typical installation requires compliance to this second point in order to ensure reliable performance from your network.
Third, we recommend designing networks with “switch” technology rather than deploying Ethernet repeaters. Doing so will provide a
network that is scalable and efficient and one that will offer real-time performance from your DSP 322ua products in the presence of
multiple control computers.
To learn more about network design rules and system compliance visit the QSC network resources page at
The following examples will help get you started, but they just scratch the surface of what can be achieved with advanced networking…
Example #1 - X-over mode:
This is the simplest connection you can make between the DSP 322ua and your computer. Use a CAT-5 crossover cable connected
between the DSP QSControl port and your computer's Network Interface Card, (NIC). No network switch is required. With server and client software installed and running on your computer you will be able to completely set up your DSP 322ua.
Example #2 - Connection to an Unmanaged Switch:
Switches can be connected to other switches to build larger networks; all of the normal networking principles apply. Here all traffic resides on a single unmanaged Ethernet switch. The DSP 322ua connects directly to the switch. A computer hosting a server application also connects directly to the switch. All configuration and monitoring of the DSP 322ua is performed via the PC.
Example #3 - Connection to a Managed Switch:
This example illustrates a connection with a managed Ethernet switch. The switch is configured with multiple virtual local area
networks (VLANs). Ethernet deliveries can only reach destination ports belonging to the same VLAN from which it was sourced.
The figure shows a separate VLAN for traffic and a separate VLAN for CobraNet audio traffic. This configuration
essentially provides a dedicated network for (including the system controller) and a second dedicated network for
CobraNet audio. As with the previous example, as many units may be connected as there are switch ports available. Switches can
be connected to other switches to build larger networks; all of the normal networking principles apply.
There are no special unpacking precautions. However, it is recommended you keep the original packing material for reuse in the rare
event that service be required. If service is required and the original packing material is not available, ensure that the unit is adequately
protected for shipment (strong box of appropriate size, sufficient packing material to prevent load-shifting or impact damage) or call
QSC’s Technical Services Department for packing material and a carton.
What is included in the carton:
DSP 322ua
Self-adhesive rubber feet
Hardware Manual (this document)
4 Software CD
IEC Power Cord 3 x #18 AWG
3-pin terminal block connector
2-pin terminal block connector
The DSP 322ua can be used in or out of an equipment rack. Rack mounting is optional. Adhesive rubber feet are included for non-rack
mount installations. Use them to prevent the unit from scratching or marring support surfaces.
Rack Mounting
Rack mount the DSP 322ua by supporting it from underneath while aligning the mounting holes with the threaded screw holes in the
rails; install all four mounting screws and washers and tighten securely. Ensure use of all four mounting screws in order to minimize the
chance of bending or distorting the rack mount ears. If the DSP 322ua is to be transported while in a rack, we recommend supporting
the rear of the chassis. This will help prevent the unit from being damaged from the increased mechanical stresses of portable and
mobile use. The DSP 322ua’s chassis includes integral rear mounting tabs for securing to the rack mounting ears.
Be certain not to block
the cooling air ventilation openings on the
sides of the chassis.
Be certain not to block
the cooling air ventilation openings on the
sides of the chassis.
Computer Requirements & Software Installation
Installing is easy. All you need to do is choose the folder where the program is to be stored (the default setting is acceptable for most applications). We recommend your system meet the following minimum requirements:
1- IBM PC compatible computer with a Pentium 4 processor.
2- Processor speed of 1 GHz (2 GHz or faster recommended for systems with 30 or more BASIS/RAVE/DSP units).
3- 512 megabytes of RAM (1 gigabyte recommended for systems with 30 or more BASIS/RAVE/DSP units).
4- Hard drive with at least 500 MB of free space for the program and files you generate.
5- Display resolution of 1024 X 768, 16-bit color.
6- CD-ROM drive to install the software.
7- 10BaseT/100BaseTx network interface card (the DSP322ua uses only 10Mbit (10BaseT) connection)
8- Windows XP Professional, XP Home, Windows 2000 SP2 (or better), or Windows NT4.0 SP6a operating system. Windows 95,
98 and ME platforms are not supported.
Note: If system is used for real-time adjustments and configuration of audio systems, we recommend all Windows Power Options
(located in the Windows Control Panel) features be disabled. Display, hard drive, system standby and hibernation settings should be set
to “Never”. This avoids waiting for the system to “wake-up” if adjustment is needed after an elapsed period of time.
To Install
1- Start your computer and start Windows.
2- If there are any programs running, please close them now. Be sure to leave Windows running.
3- Place the CD-ROM in your CD-ROM drive. If your system supports the Auto Run feature installation begins automatically, otherwise, you can click Start on the task bar, click Run, and browse for the file named setup.exe from the CD.
4- Click the Install button.
5- Follow the installation instructions on the screen.
To Uninstall
1- Click the Start menu button and choose Settings/Control Panel.
2- Double-click the Add/Remove Program icon.
3- Select from the list, then click Add/Remove.
4- Click Yes to confirm you would like to uninstall
General Information & Configuration Memories
The network should be operable and software should be installed/running on the system controller computer.
Configuration Memories
The DSP 322ua has non-volatile storage locations that contain settings for the device as well as DSP signal flow. The storage locations
make it possible to set up the DSP for different situations and quickly recall the setup with or without software using the
front panel controls.
AC Power Cord
Insert the molded receptacle of the AC power cord into the AC
power inlet on the back of the DSP 322ua. Plug the AC line connector into the AC outlet. The power supply will accept from 100 to
240 Volts AC, 47 to 440 Hertz, without any changes. If a different
type of IEC power cord is required than the one supplied with your
322ua, contact QSC’s Technical Services Department.
Connect one end of a category-5 cable terminated with an RJ45
plug into the QSControl receptacle. Insert the RJ45 plug into the
receptacle with the lock-tab oriented toward the bottom of the DSP
322ua and push firmly until the connector locks into place (usually
an audible “click” can be heard). Connect the other end to the
appropriate network port.
QSControl connection:
accepts ruggedized or
normal shell-less RJ45
Analog Universal Audio Inputs
Eight balanced audio inputs are provided, CH 1 INPUT - CH 8
INPUT. They accept everything from mic level to line level signals
and are equipped with software-selectable +48V phantom power.
Plug the input signal terminal block connectors into the input
receptacles. Connection pin-out is printed on the rear label for reference. Refer to the illustrations for balanced and unbalanced connections. Use balanced audio inputs whenever possible.
Each input has software-selectable +48V phantom power. Use caution when connecting equipment (particularly unbalanced equipment).
Analog Audio Outputs
Eight balanced audio outputs are provided, CH 1 OUTPUT - CH 8
OUTPUT. Plug the output signal terminal block connectors into the
output receptacles. Connection pin-out is printed on the rear label
for reference. Refer to the illustrations for balanced and unbalanced connections. Use balanced audio outputs whenever possible.
Omni In
The six Omni In connectors are two-pin terminal block connectors.
They accept contact closure, TTL logic signals, 0-5 VDC control
voltages, or 10k ohm variable resistors. The contact closure and
logic devices accommodate on/off or state-change events; the variable resistor input provides full 8-bit resolution allowing for incremental-change events. Refer to the illustrations for connection
recommendations. NOTE! +48 volts is the absolute maximum that
can be applied to the + pin without damage. Voltage is with
respect to chassis or the - pin.
Analog audio input and output- balanced connection.
Analog audio input and
output- unbalanced connection. Note jumper wire
between - and ground.
Omni In connections. Variable input must be 10k ohm
variable resistor. Contact
closure input can be a
switch or relay contacts.
These inputs can operate
software “devices”. Negative (-) terminal is at chassis potential.
Logic Out
The four Logic Out connectors are two-pin terminal block connectors. They provide CMOS logic level compatible signals for external
Logic Out connections.
Negative (-) terminal is at
chassis potential. Positive
(+) terminal logic level is
switched using software.
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 energized the C to NC connection is opened and the C to NO connection is
Relay Out connections.
Refer to text, at left, for
The RS-232 is a utility serial port for accessing certain diagnostic features and setup. Connect to an available COM port on your PC and communicate using a terminal control program such as Windows
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 display.
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 system shutdowns.
DIAGNOSTIC Indicator- This red diagnostic LED reports several possible operational conditions. During boot-up, it is used to continually
blink a “dot-dash” pattern if the power-on memory self-test fails. During 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
software. This feature is particularly helpful for identifying a particular
(continued, next page)
LED Indicators (continued)
QSControl Status (Port) Indicators- There are three LEDs on the front and rear panels labeled RX, TX and LINK. These indicate
the status for the network. Their functions are described below.
RX (receive)- This indicator illuminates any time the DSP 322ua receives data from the network.
TX (transmit)- This indicator illuminates whenever the DSP 322ua transmits data onto the network.
LINK STATUS- The corresponding indicator illuminates when the DSP 322ua is connected to an operating network.
SIGNAL indicators- These indicators will illuminate green for input signals -40dB to -10dB below full scale; yellow for signals
between -10dB to -2dB below full scale; red for -2dB to full scale (or clip).
LCD Display and Controls
The DSP 322ua has a 2 line X 16 character LCD display. The display and the multi-function push-button switches on either side provide data access and editing capability. The push-button switches on either side of the display are used to navigate through the
menus. The rotary select/accept knob is active for many displayed items allowing you to scroll through choices by rotating the control, and accepting choices (entering) by pushing in on the control.
The accessible menus and sub menus may appear differently than the example shown. Software updates may occasionally
improve the interface. The basic navigation flow for the DSP 322ua menu system is shown on the following page.
Front Panel Password Lockout
The password lockout provides the ability to restrict access to all of the editable parameters available on the LCD front panel. This
feature is enabled or disabled via software only (refer to the “General Tab” area and click on the “Front Panel Password” button). When the lockout feature is enabled, all front panel LCD functions are readable, but editing of parameters is now
password protected. While in this mode, any attempt to edit a parameter requires the user to enter the Front Panel Password. The
default factory password is “qsc”. The password is stored in the DSP unit and can be changed using the software.
Once the password has been correctly entered, the DSP will allow edits to the parameters.
After 5 minutes of inactivity, the DSP will automatically reset the Front Panel Password lockout. Re-entry of the password will be
required to resume editing.
The lockout mode can be deliberately disabled via the “Disable Edits” checkbox in the Front Panel Password menu of the software.
LCD Navigation Map
Left side buttons have screen dependent functions.
This read-only screen is the “out of the box” default
display after power up. This is the most desired
information when first setting up a network system.
Once user moves to a different screen, the last
screen accessed becomes the new power up
Use rotary data wheel to edit data. Rotate to
move cursor and push to accept change.
Boot Screen
Right side buttons serve as up/down
Arrow characters indicate right side
button context. If additional menus
are available, the arrow character will
be shown.
*Note: After successful password entry, all
screens with editable parameters will have
read write capability. Without password
entry, these screens will be read-only.
Getting Started
This section outlines one of the simpler methods of getting familiar with your DSP 322ua and the software. The goal of
this procedure is to get your computer and the DSP 322ua connected and communicating and the software installed and
running. After the software is installed and running, refer to the software’s Help file for all software related operation/issues. Note!
The default password for the DSP 322ua is “qsc” (no quotes, lower case).
1- Turn off the computer and unplug the power cord from the DSP 322ua.
2- Connect a CAT-5 crossover cable from the computer’s network interface card (NIC) to the DSP 322ua QSControl jack (example 1, page
3- Reconnect the power cord to the DSP 322ua (turn it on). Using the DSP 322ua LCD display and controls, navigate the menu to the IP
Address and make a note of it. In steps 12 and on, you will need to change the IP address of the DSP 322ua or your PC.
4- Turn on the PC and start Windows. You must have Administrator rights and be signed on as Administrator in order to install the program. Ensure you are signed on to the computer as the Administrator.
5- Place the CD-ROM in your CD-ROM drive. The install wizard should start. If not, you can also select Start then Run
and browse for the file named setup.exe from the CD.
6- The installer queries the computer for available drive space and other information. If required MDAC library (Microsoft) files are not
already on the computer, the library files are installed. You must accept the Microsoft software agreement in order to install the MDAC
library. It may be necessary to reboot the computer after library installation.
7- At the prompt for “Client/Server” selection, keep both Client and Server selected. This will be appropriate for general use.
8- When prompted “Select Installation Folder”, specify the installation directory or accept the default location.
9- You will be prompted to select an installation accessible by everyone (non-secure) or an installation accessible only to you (secure).
Select the appropriate Everyone or Just Me box and continue. Installation proceeds.
10- Reboot only if your computer prompts you to do so.
11- Select Network Connections in the control panel. Select Properties. Right-click Local Area Connection, and view its properties. Highlight the Internet Protocol (TCP/IP) tab and view its properties. You will see an entry field for the IP address. Decide
whether you want to change the IP address of your computer to be similar that of to the DSP 322ua (easiest if you have many DSP
322ua units) or if you want to change the IP address of your DSP 322ua to be similar to that of the computer. This is a network management decision.
12- Change the IP address of the DSP 322ua (or computer) to be compatible with that of the computer (or DSP 322ua). Typically, this is
done by making the IP address of one of the devices 1 digit different in the last octet (group of digits in IP address). If changing the computer’s settings, write down the current values, in case you want to revert later.
13- The subnet mask address should be exactly the same for both the computer and the DSP 322ua. The Gateway address should not
be altered as it is not used.
14- After you are satisfied with all your settings, close all open windows and start the program. Select Start, All Programs,, Venue Manager.
15- The login screen should open. The default password is “qsc” (lower case, no quotation marks). Select “Log on to Local Computer”
and click OK.
16-The Venue Manager window will open. A Startup Tips screen will be visible the first time Venue Manager is
launched. Optionally, the Startup Tips screen may be disabled by un-checking the box in it’s lower left corner. It is highly recommended the user become familiar with each of the tips listed on this screen. After reviewing the tip(s), close the Startup Tips screen.
Getting Started (continued)
17- Select Device, Add Device, from the menu. A new window will open prompting you to name the device. Name it logically, such
as DSP 1, or similar. Select the Device Type and select DSP 322ua. At the Password prompt, enter “qsc” (lower case, no quotation
marks). This is the device password, separate from the software password. The default, in both cases, is “qsc”, but you are free to
change either or both. Enter the IP address of the DSP 322ua and click OK.
18- The DSP 322ua will now appear in the inventory root (left side of screen, first with a red “x”, then a yellow exclamation point, then
a normal icon). If the DSP 322ua does not eventually show in the inventory root, check that a crossover cable is used (only for DSP
322ua connected directly to PC), check the cable connections, verify IP addresses are set correctly, verify Subnet masks are set correctly, and verify AC power is properly applied to the DSP 322ua.
19- Click the “+” sign of the DSP 322ua in the inventory root, then the “+” sign of the Flashed Configs. Click on the config with the loudspeaker icon. A view of applicable device tabs will open. Click the DSP tab and the current DSP configuration of the DSP will be displayed.
20- Right click on the Design Editor icon in the lower left of your display; select “New”. A new window opens; select DSP 322ua for
the device type.
21- Click on Help to access the software’s Help system. All software operation is covered in the on-line help file.
Operation of the DSP 322ua is accomplished with the included software. No software
operation is covered in this hardware manual. After installing your software, open the Help file and
follow its recommendations. The software Help file includes the most recent information available
for your DSP 322ua.
QSControl Port
The QSControl port operates on a 10BaseT Ethernet network. This port is one of the primary means for connecting to the
DSP 322ua. The port may connect directly to a PC's 10BaseT or 10/100 (auto-sensing or auto-negotiating) network interface card using
a crossover cable. Data from the QSControl port may also pass through network repeaters, network switches and routers. We strongly
recommend the use of network switches to facilitate higher bandwidth and dedicated connections.
1 Minute Autosave Timer and Power Cycling
The active configuration has a special feature associated with it. Any changes made to a parameter during operation will start an internal timer which will trigger an automatic save of the configuration data. The save procedure begins after 1 minute of parameter change
inactivity. If the DSP322ua is then power cycled, upon restart, the previous settings data will be preserved in the active configuration.
Utility/Diagnostic Functions
Safe Mode Switch
Location of Safe Mode switch: The front panel has a small access hole on the left side, just left of the Power indicator. It is not
labeled to help prevent accidental use. The Safe Mode switch can be operated by using a paperclip (or similar item) inserted into the
access hole and pushing.
Safe Mode: Use if the DSP 322ua becomes inoperable (or behaves in completely unexpected ways) after updating firmware.
If the DSP 322ua operates in an unexpected way or is not responding to any communications after a new firmware file is uploaded to it,
it is likely the file was corrupted during transfer. If this occurs, there is a “backup” program in the DSP 322ua that will enable you to
communicate with it.
How to put the DSP 322ua into Safe Mode:
1- Turn off the power to the DSP 322ua by unplugging it from the AC outlet.
2- Depress the Safe Mode switch and keep it depressed while plugging the unit back in (power on).
3- The DSP 322ua is now in “safe mode”. You may release the switch.
You should now be able to re-establish limited TCP/IP communications with the DSP 322ua. Once communication has been re-established, the file transfer can be tried again or the old application file used until the source of the data transfer problem can be found.
Also, WILL NOT communicate with the DSP 322ua if it is in “safe mode”. You may communicate only using TFTP, Telnet,
or RS-232.
RS-232 Serial Port I/O Interface
The RS-232 connector on the rear panel is used as a serial port input/output (I/O). This I/O port is used for accessing Ethernet/IP settings, stand alone control capabilities, system “health” data, firmware version information and other related data.
Should any system problems arise, the data that may be accessed through this interface can help to track down the problem. The most
common items that might be used are “Display Network Settings” and “Enter Network Setup”. Many of the remaining selections would
typically be used for troubleshooting purposes along with a QSC technical representative prompting you to access particular menu
items so the data can be interpreted.
Connection is made using a normal serial cable between your computer’s serial port and the RS-232 port of the DSP 322ua. Once properly connected, a “dumb-terminal” program (such as Hyper Terminal, a widely used version on most Windows-based PC’s) is started and
communication established between the PC and the DSP 322ua.
Following is the basic procedure for starting up Hyper Terminal, naming the connection, specifying the communications settings and an
example of “what you should see” for a text-menu once the communications link has been established. If programs other than Hyper
Terminal are used, you will need to follow your software’s instructions for establishing communications through your PC’s COM (serial)
Utility/Diagnostic Functions (continued)
RS-232 Communications Procedure:
1) Connect the RS-232 port of the DSP 322ua to an unused serial port (COM port) of a PC using a normal (straight-through) serial cable.
2) Open the HyperTerminal program. This program is usually started by clicking the Windows Start icon, selecting Programs, then
Accessories, Communications, and finally, highlighting the Hyper Terminal folder and clicking on its icon.
3) After starting Hyper Terminal, a Connection Description window will pop-up. It will require that you name your connection. Enter a
name for your new connection (example: DSP 322ua) and click OK to continue.
4) Next, Hyper Terminal needs to know how to “talk” to the DSP 322ua. This selection depends on which port on your PC the cable is connected to. Ignore the first three entry fields (phone number information) and go directly to the Connect using entry field and click on the
down arrow for the drop-down menu selection. Select the port the DSP 322ua is connected to and click OK to continue. The Properties
window should appear next.
5) The Properties window for the selected COM port should now be active. For the Port Settings, use the following information so communication between the DSP 322ua and the computer is in the same “language”.
Bits per Second: 9600
Data Bits: 8
Parity: none
Stop Bits: 1
Flow Control: Xon/Xoff
Once you have set the properties as outlined, click OK to continue. If all the connections and communications settings are correct, the main
Hyper Terminal window will open.
6) The Hyper Terminal main window will appear next, but blank. Type the letter “h” (for help) and then the “Enter” key. This will prompt
the DSP 322ua to post its menu text. The “h” key is the Help prompt for the DSP 322ua. A text menu will appear. This is sent by the DSP
322ua and will detail your options and instructions for changing the address information.
From this main-menu you will need to make your menu choices and follow the instructions in the following sub-menus or screens. Although
many of the instructions and tests may not pertain to a specific setup or troubleshooting situation, you may be asked to run certain tests by
a QSC technical representative. The results of these tests will help to troubleshoot any problems.
The most common user item that might require settings to be changed would be the IP address information. This would be useful if the IP
address was inadvertently changed to an unrecognized address and subsequently you were unable to “talk” to the DSP 322ua over the network. This situation would require the Display Network Settings and Enter Network Setup items to be accessed for re-assigning a
valid IP address.
Telnet Access
The RS-232 features can also be accessed via Telnet. The Microsoft Telnet application is a Windows program. Consult Windows documentation for Telnet information.
Basic procedure for opening a Telnet session:
1- To open the Telnet session- Click START, select RUN, type “Telnet” followed by a space, then the IP address of the DSP 322ua you want
to communicate with in the text box and click OK.
2- If the address entered was correct and network communications with the DSP 322ua are successful, the Telnet session should open.
3- Now you have the same options that are available in the Serial Port I/O (RS-232) interface section.
Preliminary Specification
Dynamic Range (AES-17, -60dB Method, all sensitivities)
A weighted
Distortion (20Hz-20 KHz, all sensitivities)
Gain= 0 - 30dB
Gain >30dB
<0.008% THD+N
<0.05% THD+N
<0.009% THD+N
<0.009% THD+N
<0.009% THD+N
<0.05% THD+N
Crosstalk (20Hz - 20KHz)
inter-channel (max)
inter-channel (typ)
intra-channel (max)
intra-channel (typ)
Frequency Response
20Hz - 20KHz (max)
20Hz - 20KHz (typ)
± 0.5dB
± 0.2dB
Program Inputs
Connector Type
Input Impedance (nom.)
Common-Mode Rejection
Input Sensitivities (variable)
Phantom Power (per IEC1938 (1996))
3-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks
Electrically balanced
All shield terminals connected to chassis
1:+ 2:- 3:CHASSIS GND
Balanced: 6.81k ohms Unbalanced: 13.6k ohms
20Hz - 20KHz (min.): >54dB,20Hz - 20KHz (typ.): >60dB
150 ohm, 30dB: -124.5dBu150 ohm, 60dB: -125.0 dBu
Vrms: 0.9 mV to 15.46 V
dBu: -62.2 to +26dBu
dBV: -64.4 to +23.7 dBV
+48V (software-selectable)
Program Outputs
Connector Type
Maximum Output Level
3-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks
Electrically balanced
All shield terminals connected to chassis
1:+ 2:- 3:CHASSIS GND
9V (rms ), +21.2 dBu, +19 dBV
Audio Converters
24 bit, 48KHz, in and out
infinite attenuation
DSP 322ua in stand-alone mode
Analog input through full DSP chain to analog outputs
2.354 milliseconds (Default Group Delay)
Specifications are subject to change without notice.
Preliminary Specification
Relay Outputs
Connector Type
Switching Capacity (nom)
2 discrete floating relay switch outputs
3-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks
Electromechanical Relay
1:NC 2:NO 3: COM
1A 30VDC
Logic Outputs
Connector Type
4 discrete outputs
2-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks
Single-ended, TTL compatible
1:+(Signal) 2:-(CHASSIS GND)
Omni Inputs
Connector Type
Normal Operating Range
Potentiometer Operation
Voltage Tolerance
Current Output
6 discrete inputs for TTL logic, voltage control or passive resistive
2-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks
Single-ended, ground referenced
1:+(Signal) 2:-(CHASSIS GND)
Reads signals between 0-5V nominally
Use 10K for full range
+/- 48V
0.5mA with 10K pot (for passive resistive controls)
RS-232 Port
Female DB9 Connector
Neutrik Ethercon RJ45 Ruggedized Data Connector
Indicators Status
LCD Data Display
Signal Presence
Yellow Link, Tx, Rx, front panel / Green Link, Tx, Rx, rear panel
Blue, front panel
Red, front panel
2 line x 16 character, backlit, front panel
Tri-state (red, green, yellow), front panel
18.89” (479.8mm) W x 1.73” (43.9mm) H x 15.00” (381.1mm) D
9.94 lb. (4.51 kg)
Specifications are subject to change without notice.
How to Contact QSC Audio Products
Mailing address:
QSC Audio Products, Inc.
1675 MacArthur Boulevard
Costa Mesa, CA 92626-1468 USA
Telephone Numbers:
Main Number
(714) 754-6175
Sales & Marketing
(714) 957-7100 or toll free (USA only) (800) 854-4079
Customer Service
(714) 957-7150 or toll free (USA only) (800) 772-2834
Facsimile Numbers:
Sales & Marketing FAX
(714) 754-6174
Customer Service FAX
(714) 754-6173
World Wide Web:
[email protected]
[email protected]
Warranty Disclaimer (USA only; other countries, see your dealer or distributor)
QSC Audio Products, Inc. is not liable for any damage to amplifiers, loudspeakers, or any other equipment that is caused by negligence
or improper installation and/or use of this signal processing product. While QSC has endeavored to develop and produce the most
dependable and robust 'network' audio product for your use, due to the myriad of network situations and equipment that may be
encountered in its implementation, QSC cannot be held responsible for network conflicts and associated consequences that may result.
For this reason, QSC strongly recommends that the network used for implementation of QSControl products be completely separate
from all other networks, data or otherwise. As such, should you elect to integrate QSControl products with your existing network system, all risks attendant to such integration of QSControl products with your existing network or network systems are assumed by you.
While QSC strives to provide the highest quality technical solutions for networked audio products, in no event will QSC or its suppliers
be held liable for any damages, consequential, incidental or otherwise, including any claims for lost profits and/or savings resulting
from any attempted integration of QSControl products with your networking systems. No agent, employee or representative of QSC has
any authority to alter or modify in any manner, the disclosures and recommendations set forth herein.
QSC Audio Products 3 Year Limited Warranty
QSC Audio Products, Inc. ("QSC") guarantees its products to be free from defective material and / or workmanship for a period of three
(3) years from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect
occurs under normal installation and use - provided the unit is returned to our factory or one of our authorized service stations via prepaid transportation with a copy of proof of purchase (i.e., sales receipt). This warranty provides that the examination of the return product must indicate, in our judgment, a manufacturing defect. This warranty does not extend to any product which has been subjected to
misuse, neglect, accident, improper installation, or where the date code has been removed or defaced. QSC shall not be liable for incidental and/or consequential damages. This warranty gives you specific legal rights. This limited warranty is freely transferable during
the term of the warranty period.
Customer may have additional rights, which vary from state to state.
In the event that this product was manufactured for export and sale outside of the United States or its territories, then this limited warranty shall not apply. Removal of the serial number on this product, or purchase of this product from an unauthorized dealer, will void
this limited warranty.
Periodically, this warranty is updated. To obtain the most recent version of QSC's warranty statement, please visit
Contact us at 800-854-4079 or visit our website at
QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA
©2005, 2006 “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.
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