BASIS 922az User Manual
BASIS 922az
8x8 CobraNet Enabled Control and Monitoring Signal Processor
Hardware Manual
EN
EN
*TD-000133-00*
TD-000133-00 rev.A
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IMPORTANT SAFETY PRECAUTIONS & EXPLANATION OF SYMBOLS
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.
SAFEGAURDS
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 BASIS 922az 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.
EN
LITHIUM BATTERY WARNING
THIS EQUIPMENT CONTAINS A NON-RECHARGEABLE LITHIUM BATTERY. LITHIUM IS A CHEMICAL
KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER OR BIRTH DEFECTS. THE NON-RECHARGEABLE LITHIUM BATTERY CONTAINED IN THIS EQUIPMENT MAY EXPLODE IF IT IS EXPOSED TO FIRE OR
EXTREME HEAT. DO NOT SHORT CIRCUIT THE BATTERY. DO NOT ATTEMPT TO RECHARGE THE NONRECHARGEABLE LITHIUM BATTERY.
FCC INTERFERENCE STATEMENT
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 2003, 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.
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Don’t want to read the entire manual? Just
want to dig right in? Go to page 17....
Introduction
The BASIS 922az provides the digital audio transport, signal
processing, control and status monitoring facilities needed
to bind a group of amplifiers and loudspeakers into an integrated functioning system. In conjunction with QSControl.net software, it enables the user to design, test and
deploy professional audio reinforcement and distribution
systems ranging in size from just a few channels to hundreds.
Each QSC power amplifier connects directly to the BASIS
via one of its four QSC DataPorts. All mission-critical elements of the BASIS-driven sound system are monitored,
user-selected events are logged, and loudspeaker protection features unique to BASIS such as QSC's Driver
Defense™ power limiter are made possible through the
DataPort functionality.
A control server/client machine (a simple MS Windows
machine) is the principle user-interface for controlling the
overall BASIS / QSControl system (The BASIS 922az does
have a simple front panel interface for accessing a few critical functions). A single QSControl 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
QSControl network is available. Or it can be operated from a
1- Power indicator
2- Diagnostic indicator
3- Network status indicators
4- Port connection status indicators
5- Multi-function push buttons
6- Display
7- Rotary select/accept knob
8- Reset push switch (recessed)
9- DataPorts
single computer running both the client and the server. Or it
can be configured and adjusted using a QSControl.net computer that can later be disconnected, leaving the system to
function on its own without a Windows machine on the network. (All basic functions of the BASIS 922az continue to
operate with or without a control computer connected to
the network).
Eight entire system configurations can be swapped and
replaced almost instantly. Each configuration (called a
“Config” in the software) stores all its associated parameter
settings in a “Snapshot” and each Config has eight snapshot locations available for recall. The configurable DSP
engine provides all of the functions necessary to handle Bchain (the amp/loudspeaker portion of a single chain) such
as very flexible and precise crossovers, delays, equalization,
compression/limiting, etc.
EN
Audio enters the BASIS 922az either through analog line
inputs or from CobraNet devices such as QSC's line of RAVE
CobraNet Interface units. Any combination of 16 CobraNet
channels (selected from up to 4 bundles of 32 channels) can
be routed into the 24 x 24 DSP engine. Any or all of the 24
DSP channels can also be routed to up to 32 CobraNet channels on the network.
10- Analog inputs
11- Monitor chain in/out
12- Relay outputs
13- Logic outputs
14- Omni inputs
15- RS 232 port
16- Network status indicators
17- QSControl 10BaseT receptacle
18- CobraNet 100BaseT receptacle
19- IEC power inlet
See page 14 for detailed descriptions.
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Introduction (continued)
Unlike other configurable DSP boxes, the intrinsic processing latency of the BASIS 922az is both short (2.355 milliseconds analog to analog, 0.417 milliseconds of that due to the
DSP) and fixed. The delay is the same for all channels and
does not change regardless of the DSP configuration (unless
you deliberately add more delay of course). And BASIS supports the new optional low-latency CobraNet feature that
provides transport at only 2.66 milliseconds delay. Thus the
delay from analog to analog across the network can be less
than 7 milliseconds, fast enough not only for large audio
distribution but for the most critical real-time live performance work.
EN
Both software and firmware can be easily updated over the
network. In the future, QSC will be adding new capabilities
Block Diagram
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to both BASIS and QSControl.net. Our latest code releases
and access to up-to-date information on BASIS and QSControl.net is available at www.qscontrol.net. We invite you to
visit us there.
We've applied our many years experience in supporting
high-end installed sound with our previous system-building
products such as RAVE, QSControl, CM16a, DSP-3, DSP-4,
and DSP-30. The BASIS 922az brings everything together
into one compact, powerful, easy to use system-enabling
box. We are confident that your new BASIS 922az 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 BASIS 922az
The BASIS 922az has two RJ-45 network port connectors on the rear panel. One port is labeled "QSControl" and supports standard
10BASE-T Ethernet. The other port is labeled "CobraNet" and supports 100BASE-TX, also known as "Fast Ethernet". In the following we
describe the use of these ports and we show example network connection schemes.
The BASIS 922az engages in two distinct kinds of network activity; the first is audio transport via CobraNet and the second is control
and monitoring via QSControl.net. The user can choose to install one network for CobraNet traffic and a second separate network for
QSControl traffic. We call this the "Two Wire Interface". Alternately, it is possible to run both control and audio traffic over CobraNet
via the CobraNet port. In that case the QSControl port is unused. We call this the "Single Wire Interface".
Under the most demanding real-time control conditions and when using the lowest latency CobraNet settings, users may experience
better QSControl performance using separate networks, especially when displaying a great many real-time meters. For most applications, separate networks won't provide any discernible benefits and will of course cost more. We therefore recommend using the Single Wire Interface when running CobraNet.
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If your application uses only analog I/O without CobraNet, then you should use the QSControl port for QSControl traffic and ignore the
CobraNet port.
Why CobraNet Needs Special Treatment:
Ordinary Ethernet traffic has no guaranteed time of delivery. Packets of information may arrive at their destination out of order and
some may be delayed more than others. This is fine for E-mail and even for downloading MP3 files over the Internet. Everything ends up
properly reassembled at the destination, but how long this takes will vary according to network loading, span, etc. In contrast, CobraNet is "real time" - it delivers audio with a minimal, consistent transmission delay. CobraNet is designed to use as much of conventional
networking technology as possible while providing both guaranteed time of delivery and isochronicity - maintaining a phase-locked
sample-accurate clock across the entire network. These requirements mean that ordinary unregulated Ethernet data cannot be freely
mixed with CobraNet information. The two can coexist on the same wire, but only by adhering to the proper rules.
To learn more about CobraNet and appropriate network topologies, please visit http://www.qscaudio.com/products/network/
resources.htm and http://www.peakaudio.com/CobraNet/background.html.
Notes on Network Systems Design:
As with any communications system, the reliability and performance of a local area network 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 must be avoided. Although each network design is unique and may carry its own performance requirements, compliance to
the following three points will assist in building an audio network that is trouble free and efficient.
First, audio and conventional data communications deliveries should not exist on the same LAN or VLAN. The exception to this is the
BASIS 922az Single Wire Interface, which offers a solution for converging audio and QSControl.net onto the same LAN or VLAN. However, conventional communications, such as corporate networks, print services, e-mail and Internet access, should not exist alongside
CobraNet audio and QSControl.net on the same LAN or VLAN. Further, CobraNet audio and QSControl.net data should not exist
together on the same LAN or VLAN when implementing the Two Wire Interface. This is not to say that conventional communications
cannot share the same network hardware with a BASIS 922az. In fact, common network hardware, such as managed Ethernet switches
and media converters, can service both BASIS 922az products and conventional data communications equipment so long as the managed switch or media converter are partitioned into separate network domains. This is normally done by configuring a separate VLAN
for each data type. (Some switches may allow individual port assignments or support partitions through DIP switch selection.)
Second, CobraNet audio must traverse either a repeater domain or a network switch domain. The point here is that the CobraNet port
on a BASIS 922az must connect directly to, and only to, either a repeater LAN or a switched Ethernet LAN. Hybrid networks containing
both repeaters and switches are not permitted on the audio segment. Connecting the CobraNet port to a repeater that is in turn connected to a network switch poses an illegal and non-compliant condition. We recommend always connecting the QSControl and/or
CobraNet port(s) directly to network switch ports.
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Third, the BASIS 922az and QSControl.net system are targeted at network switch deployments.
The consumer costs of Ethernet switches have continued to fall over the last several years and are now comparable with repeaters on
a per port basis. In addition, the sophistication and scalability of network switches make them ideal for new installations. However, we
do realize that designers may wish to add BASIS products to existing audio network installations that are built on repeater LAN topologies. This applies primarily to existing CM16a and RAVE networks. For this very reason we continue to support connectivity to network
repeater hardware with the BASIS 922az. Support for network repeaters exist only with the Two Wire Interface. That is to say that the
QSControl port and the CobraNet port must be connected to separate repeater LANs. Even when properly configured, audio channel
capacity is severely limited and both audio and control network expansion is limited by the respective wire speed of each segment. In
other words, scalability ceases to exist when bandwidth demands on the QSControl segment approach 10 Mbps and demand on the
CobraNet segment approaches 100 Mbps. Obviously, we recommend taking advantage of switch network technology whenever possible.
It should be noted here that while the CobraNet port on a BASIS 922az is restricted to repeater LAN and switch LAN deployments,
QSControl.net is a TCP/IP standards-compliant network system and therefore supports operation on network repeaters, switches and
routers. When implementing the Two Wire Interface, the QSControl.net segment does not require a single topology data path and
therefore repeaters, switches and routers may be assembled on the LAN in a hybrid fashion.
EN
To learn more about network design rules and system compliance visit the QSC network resources page at http://www.qscaudio.com/
products/network/resources.htm. To learn more about CobraNet design requirements and to obtain the CobraCAD system design utility
visit the Peak Audio website at http://www.peakaudio.com/CobraNet/Network_Design.html.
All of this may seem daunting if you are new to networking. However, it all boils down to connecting a few simple cables between various networking devices. Most of the time it "just works". QSC helped pioneer CobraNet with our RAVE ™ products and there are hundreds of installations all over the world, in theme parks, hotels, stadiums - everywhere. And they run hum-free, sound great and are
very reliable.
The following examples will help get you started, but they just scratch the surface of what can be achieved with advanced networking…
Example #1 - QSControl.net X-over mode:
This is the simplest connection you can make between the BASIS 922az and your computer. You use a CAT-5 crossover cable connected
between the BASIS QSControl port and your computer's Network Interface Card, (NIC). No network switch is required. With QSControl.net server and client software installed and running on your computer you will be able to completely set up and monitor your BASIS
922az.
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Example #2 - CobraNet X-over mode:
This is the simplest connection you can make between two BASIS boxes. You use a CAT-5 crossover cable connected between the
CobraNet ports of each unit. No network switch is required. This connection allows audio to pass between the two BASIS boxes over
CobraNet.
EN
Combining example 1 and 2 lets you setup and monitor one box at a time, much as you would have to do using a point-to-point RS232
connection, while passing audio between them, all without a network switch. However, you would have to physically connect your
computer first to one BASIS box and then to the other. With this elementary connection you don't have a true network. It is just like
making RS-232 connections - except that performance is 1000% better.
All the other examples are of proper networks and all require a network switch. On a proper network, you have direct access to all
BASIS products all of the time without having to physically switch between them. You still get the great performance of TCP/IP over
Ethernet. (And we believe QSC's advanced 4th generation networking software provides the best performance of any networked
audio control system available today including Ethernet based systems from competitors.)
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Example #3 - Single Wire Interface:
Here all QSControl and CobraNet traffic shares the same single CAT-5 cable between the BASIS 922az and an unmanaged Ethernet
switch. The QSControl.net system manages traffic flow efficiently and reliably so that all audio and control data is delivered to its
appropriate destination anywhere on the network. Though the example shows only two BASIS 922az units, as many devices may be
connected as there are available switch ports. All BASIS units will be able to communicate simultaneously with the computer. All will
have CobraNet audio. Switches can be connected to other switches to build larger networks; all of the normal networking principles
apply. (Note: there must be at least two CobraNet devices online for any data - audio or control - to come out of the CobraNet port.).
EN
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Example #4 - Two-Wire Interface (shared network hardware):
This example illustrates the Two-Wire Interface 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 QSControl.net traffic and a separate VLAN for CobraNet audio traffic. This configuration essentially provides a dedicated network for BASIS 922az control and monitoring (including the system controller) and a
second dedicated network for CobraNet audio. As with the previous example, as many BASIS 922az units may be connected as
there are switch ports available. All BASIS units will be able to communicate with the computer. All will have CobraNet audio.
Switches can be connected to other switches to build larger networks; all of the normal networking principles apply.
EN
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Example #5 - Two-Wire Interface (separate network hardware):
Example #5 is conceptually similar to example #4. The difference here is that separate networks are created by providing each local
area network (LAN) with its own network switch. Therefore, traffic segmentation is physical rather than logical. Example #5 also provides an additional level of fault tolerance, although at the expense of additional network hardware. The figure shows a separate network switch for QSControl.net traffic and a separate network switch for CobraNet audio traffic. All of the previous comments regarding
network expansion still apply.
EN
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Unpacking
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:
Item
Description
1
BASIS 922az
2
Self-adhesive rubber feet
3
Hardware Manual (this document)
4
QSControl.net Software CD
5
IEC Power Cord 3 x #18 AWG
6
3-pin terminal block connector
7
2-pin terminal block connector
8
5-pin terminal block connector
Quantity
1
4
1
1
1
10
10
1
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Mounting
The BASIS 922az 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 BASIS 922az 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 BASIS 922az 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 BASIS 922az’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.
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Computer Requirements & Software Installation
Installing QSControl.net 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.
3- 256 megabytes of RAM.
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
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.
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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 QSControl.net:
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 QSControl.net CD-ROM in your CD-ROM drive. You can also select Start-Run and browse for the file named setup.exe
from the CD.
4- Click the Install QSControl.net button.
5- Follow the installation instructions on the screen.
To Uninstall QSControl.net:
1- Click the Start menu button and choose Settings/Control Panel.
2- Double-click the Add/Remove Program icon.
3- Select QSControl.net from the list, then click Add/Remove.
4- Click Yes to confirm you would like to uninstall QSControl.net.
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General Information & Configuration Memories
Amplifier Setup
The QSC DataPort-equipped amplifiers connected to the BASIS 922az must have their power switches in the “on” position. For initial
testing, use the lowest useful gain setting until the system is operating as expected. After the system setup has been verified and
tested, gain settings may be adjusted as required.
Network
The network should be operable and QSControl.net software should be installed/running on the system controller computer.
EN
Configuration Memories
The BASIS 922az has 8 flash configuration storage locations. The configurations contain settings for the device as well as a DSP signal
flow. The configurations make it possible to set up the device for different situations and quickly recall the setup with or without
QSControl.net software.
Each configuration contains 8 snapshots. The snapshots are DSP signal flow parameter sets which may be recalled in concert with the
configuration. These snapshots (parameter sets) extend the setup storage capability of the BASIS 922az. For example, a snapshot could
be used to store a level setting for a particular section of a venue. Recalling that snapshot could boost the level setting without changing a master gain.
CobraNet Connection Loss
If you are operating with a valid CobraNet network, and the connection to the network is disrupted, audio will momentarily mute, allowing the BASIS 922az to synchronize with its internal clock. If CobraNet network connection is re-established, the audio will mute again
while the BASIS 922az synchronizes with CobraNet.
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Connections
AC Power Cord
Insert the molded receptacle of the AC power cord into the AC power inlet on the
back of the BASIS 922az. 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 supplied with your 922az, contact QSC’s Technical Services Department.
CobraNet and
QSControl connection. Accepts
ruggedized or
normal shell-less
RJ45 plugs.
CobraNet
EN
Connect one end of a category-5 cable terminated with a RJ45 plug into the
CobraNet receptacle. Insert the RJ45 plug into the receptacle with the lock-tab
oriented toward the bottom of the BASIS 922az and push firmly until the connector
locks into place (usually an audible “click” can be heard). Connect the other end to
the appropriate CobraNet network port.
Analog audio inputbalanced connection.
QSControl
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 BASIS 922az and push firmly until the connector
locks into place (usually an audible “click” can be heard). Connect the other end to
the appropriate QSControl.net network port.
Analog Audio Inputs
Eight balanced audio inputs are provided, CH 1 INPUT - CH 8 INPUT. Plug the
input signal terminal block connectors into the input receptacles. Connection pinout is printed on the rear label for reference. Refer to the illustrations for balanced
and unbalanced connections. Use balanced audio inputs whenever possible.
Omni In
The six Omni In connectors are two-pin terminal block connectors. They can
accept contact closure devices (switch, relay contacts) 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 inputunbalanced 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 devices.
Logic Out connections.
Negative (-) terminal is
Relay Out
at chassis potential.
Positive (+) terminal
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 nor- logic level is switched
mally-closed contact terminal and one normally-open contact terminal. These are using software.
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 closed.
Relay Out connections. Refer to text,
at left, for explanation.
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Monitor Chain
Monitor Chain connection.
See explanation, at left.
The MONITOR CHAIN connector is a 5-pin terminal block connector. Input and output connections are
balanced. The center pin is the shield connection for both the input and output of the monitor chain. Connection is shown at right. The left-most + and - terminals are for monitor chain input signals, while the
right-most terminals are for monitor chain output signals. When powered down, a relay connects the
input to the output, thus bypassing the BASIS 922az in the monitor chain.
In
RS 232
The RS 232 is an optional utility serial port for accessing advanced features. Connect to an available
COM port on your PC and communicate using a terminal control program such as Windows Hyperterminal.
Out
EN
Use a normal serial data cable with a DB-9 male plug to connect to the BASIS 922az. 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.
Ports
PORT A through PORT D are QSC DataPorts. When using the BASIS 922az with QSC DataPort-equipped
amplifiers or QSC DSP products, connect to the BASIS 922az using QSC DataPort cables. The 922az supports up to eight channels of DataPort audio and amplifier status monitoring. This can be four 2-channel
amplifiers or one 8-channel amplifier or other suitable combinations.
To connect the cable, orient the connector properly, then push into the receptacle until it is firmly seated;
tighten the retaining screws “finger tight”.
LED Indicators
When the BASIS 922az is plugged into a properly functioning AC outlet, it will power up and display a welcome screen on the LCD display.
POWER Indicator- This blue indicator illuminates when the BASIS 922az is plugged into a properly functioning AC source. There is no
power switch on the BASIS 922az. This helps to prevent accidental system shutdowns.
DIAGNOSTIC Indicator- This red indicator illuminates during the power-on self test, then should extinguish. If it remains illuminated, this
indicates that the self-test has detected an unexpected event, such as corrupted firmware or a memory boot failure. If the DIAGNOSTIC LED
remains illuminated, try resetting the BASIS 922az by cycling power off and on once. Should the indication persist, contact QSC’s Technical
Services for guidance. During operation, any system fault will fully illuminate the indicator. During a “flash” update, the indicator will blink
on and off; this is normal. Any error detected will be displayed on the LCD. For purpose of unit identification, the LED can be remotely turned
on using QSControl.net software.
QSControl and CobraNet Network Status (Port) Indicators- There are two groups of three LEDs on the front and rear panels labeled
RX, TX and LINK. One group is for the QSControl network port and the other for the CobraNet network port. Their functions are described
below. Note: Port indicators on rear panel are color coded to match the corresponding color-ring around the QSControl and CobraNet RJ45s.
RX (receive)- This indicator illuminates any time the BASIS 922az receives data from the corresponding network.
TX (transmit)- This indicator illuminates whenever the BASIS 922az transmits data onto the corresponding network.
LINK STATUS- The corresponding indicator illuminates when the BASIS 922az is connected to an operating network.
PORTS indicators- These indicators are labeled A through D. These indicators are either off, red, green, or yellow, depending on what is
connected to the port. The indications are:off- nothing attached
red- QSC DSP accessory attached
green- QSC DataPort amplifier attached
yellow- QSC DSP and Amplifier combination attached
15
LCD Display and Controls
The BASIS 922az 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 example shown. Software updates may occasionally improve the
interface. Below is a the basic navigation flow for the BASIS 922az menu system.
EN
16
Getting Started
This section outlines one of the simpler methods of getting familiar with your BASIS and the QSControl.net software. The goal of this
procedure is to get your computer and the BASIS connected and communicating and the QSControl.net 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 BASIS is “qsc” (no quotes, lower case).
1- Turn off the computer and unplug the power cord from the BASIS 922az.
2- Connect a CAT-5 crossover cable from the computer’s network interface card (NIC) to the BASIS QSControl jack (example 1, page 6).
3- Reconnect the power cord to the BASIS 922az (turn it on). Using the BASIS 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 BASIS or your PC.
EN
4- Turn on the PC and start Windows. You must have Administrator rights and be signed on as Administrator in order to install the
QSControl program. Ensure you are signed on to the computer as the Administrator.
5- Place the QSControl.net CD-ROM in your CD-ROM drive. The install wizard should start. If not, you can also select Start-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- Right click on the My Network Places icon on your computer’s desktop. Select Properties. Select Local Area Connection, and view
its properties (click Properties tab). Highlight the Internet Protocol Properties 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 BASIS (easiest if you
have many BASIS units) or if you want to change the IP address of your BASIS to be similar to that of the computer. This is a network
management decision.
12- Change the IP address of the BASIS (or computer) to be compatible with that of the computer (or BASIS). 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 BASIS. The Gateway address should not be
altered as it is not used.
14- After you are satisfied with all you settings, close all open windows and start the QSControl.net program. Select Start, Run, QSControl.net, QSControl.net.exe.
15- The login screen should open. The default password is “qsc” (lower case, no quotation marks). Select “Logon to Local Computer”
and click OK.
16-The QSControl.net Venue Manager window will open.
17
Getting Started (continued)
17- Select Device, Add New Device, from the menu. A new window will open prompting you to name the device. Name it logically,
such as BASIS 1, or similar. Select the Device Type and select BASIS 922az. 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 BASIS and click OK.
18- The BASIS will now appear in the inventory root (left side of screen). If the BASIS does not show in the inventory root, check that a
crossover cable is used (only for BASIS 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 BASIS.
19- Click on the BASIS 922az in the inventory root. A view of applicable device tabs will open. Click the DSP tab and the current DSP
configuration of the BASIS will be displayed. Default DSP routing is Analog Inputs 1-8 are routed to DataPorts 1-4, with each DataPort
assigned 2 sequential channels (i.e. Analog Inputs 1 and 2 are routed to DataPort A, Inputs 3 and 4 are routed to DataPort B, etc....).
EN
20- Right click on the Design Editor icon in the lower left of your display; select “New”. A new window opens; select BASIS 922az 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 BASIS 922az is accomplished with the included QSControl.net 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 BASIS 922az.
18
Operation
QSControl Port
The QSControl port operates on a 10BaseT Ethernet network. This port is one of the primary means for connecting QSControl.net to the
BASIS. 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.
CobraNet Port
The CobraNet port operates on a dedicated 100BaseT (Fast Ethernet) network. The CobraNet port may connect directly to a PC's
100BaseT or 10/100 (auto-sensing or auto-negotiating) network interface card using a crossover cable for the purposes of configuration
when the BASIS 922az is in the single-wire interface mode. During normal operation (passing audio) the CobraNet port must connect to
a 100BaseT or 10/100 or 10/100/1000 (auto-sensing or auto-negotiating) switch port. Optionally, the BASIS 992az may connect to
another CobraNet port using a crossover cable. When the BASIS 922az is operating in the two-wire interface mode (described in following sections), the CobraNet port may be connected to a network repeater. Regardless of the interface mode, all CobraNet audio data
must pass through only network switches or only network repeaters. Combinations of these devices will cause unreliable operation and
are not supported. Likewise, the use of routers, gateways and ATM devices are not supported for the CobraNet audio path.
CobraNet Channel Density
The BASIS 922az will support the acquisition of up to 32 channels via up to 4 inbound bundles (from the network). Of these 32 channels,
any 16 may be selected to forward to the signal processing chain (DSP engine).
The BASIS 922az will support the delivery of up to 32 channels via up to 4 outbound bundles (to the network). Of these 32 channels, up
to 24 may be unique (processed individually... or the result of mixed signals from the DSP engine). The remaining 8 channels (if used)
will be copies of other channels.
CobraNet Channel Resolution
All CobraNet audio will be processed internally within BASIS 922az at 24-bit resolution. The BASIS 922az may receive any valid resolution off of the network. This is currently 16-bit, 20-bit and 24-bit. Audio via inbound bundles may be in any combination of these resolutions and the BASIS will process the data accordingly. All DACs will process 24-bit audio, though the least significant bits may be zero
filled if the inbound audio format is less than 24-bit resolution.
The BASIS 922az will support outbound (sourced onto the network) resolutions of 16-bit, 20-bit and 24-bit.
The default outbound resolution at the standard latency (5.333 ms) will be 20-bit. The default outbound resolution at the half latency
(2.667 ms) will be 24-bit.... half latency offers 2 primary benefits... lower delivery latency and higher resolution with no additional
capacity limits.
CobraNet Terms and Conditions
Single-wire interface offers the best efficiency and ease of network configuration for most applications. The single-wire interface
requires fewer network ports and less cabling. Single-wire interface refers to CobraNet audio, CobraNet control and monitoring and
QSControl.net control and monitoring using the same network connection. This mode uses the CobraNet connection to provide all data
communications to the BASIS product. In this mode, the port must connect to a 100BaseT or 10/100 or 10/100/1000 (auto-sensing or
auto-negotiating) link partner. Network repeaters will not be supported and all audio must pass through network switches only. A
QSControl Venue Manager PC may connect to the network via a repeater or router.
Two-wire or dual-wire interface offers the greatest versatility in network design. Separate connections allow discrete networks
and offer support for WAN topologies on the QSControl.net-side. Two-wire or dual-wire interface refers to CobraNet audio having a
dedicated network link and QSControl control and monitoring having a dedicated network link. In this mode, the two ports (CobraNet
and QSControl.net) must exist on separate networks. By separate networks, we mean either physically separate hardware or the use of
common hardware with partitioned or segmented network domains such as the use of VLANs, domain bubbles or separate port clusters. The dual-wire interface may support dissimilar network hardware for the two port connections (see rules above for CobraNet and
QSControl.net port connections).
Scratchpad 1 Minute Timer and Power Cycling
The active, current running configuration has a special feature associated with it. Any change to a parameter made at run time is stored
to a scratchpad area of the device after one minute without additional change. If the BASIS 922az is then power cycled, the scratchpad
settings will be restored, thus ensuring the BASIS starts up with the same settings it had when powered down. Additionally, QSCon19
trol.net will notify the user that the running settings are stored in the scratchpad, rather than in the flash configuration.
EN
Utility/Diagnostic Functions
Reset Switch
Location of reset 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 reset switch can be operated by using a paperclip (or similar item) inserted into the
access hole and pushing.
Reset mode: Use if the BASIS 922az becomes inoperable (or behaves in completely unexpected ways) after updating
firmware.
If the BASIS 922az 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 BASIS 922az that
will enable you to communicate with it.
EN
How to put the BASIS 922az into reset mode:
1- Turn off the power to the BASIS 922az by unplugging it from the AC outlet.
2- Depress the reset switch and keep it depressed while plugging the unit back in (power on).
3- The BASIS 922az is now in “safe mode”. You may release the switch.
You should now be able to re-establish limited TCP/IP communications with the BASIS 922az. Once communication has been reestablished, 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, QSControl.net WILL NOT communicate with the BASIS 922az if it is in reset 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.
This interface is not used by the majority of users. 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 BASIS 922az. 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 BASIS 922az.
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) port.
20
Utility/Diagnostic Functions (continued)
RS 232 Communications Procedure:
1) Connect the RS 232 port of the BASIS 922az 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, highlighting 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: BASIS 922az) and click OK to continue.
EN
4) Next, Hyper Terminal needs to know how to “talk” to the BASIS 922az. 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 BASIS 922az 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 BASIS 922az 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 BASIS 922az to post its menu text. The “h” key is the Help prompt for the BASIS 922az. A text menu will appear. This is sent by the
BASIS 922az 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 BASIS 922az over
the network. This situation would require the “Display Network Settings” and “Enter Network Setup” items to be accessed for reassigning a valid IP address.
IP ADDRESS ASSIGNMENTONLY REQUIRED FOR ATTACHING TO EXISTING NETWORKS!
DO NOT CHANGE THE COMMUNICATIONS SETTINGS OF THE BASIS 922az UNLESS CERTAIN OF YOUR ACTIONS. THE
FACTORY-PROGRAMMED IP ADDRESS CAN BE ACCESSED USING THE FRONT PANEL DISPLAY MENU SYSTEM. RECORD
THIS IP ADDRESS SHOULD YOU NEED TO RETURN TO THE INITIAL SETTINGS.
21
Utility/Diagnostic Functions (continued)
Telnet Access
The RS 232 features can 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 BASIS 922az
you want to communicate with in the text box and click OK.
2- If the address entered was correct and network communications with the BASIS 922az are successful, the Telnet session should
open.
EN
3- Now you have the same options that are available in the Serial Port I/O (RS 232) interface section.
22
Preliminary Specification
Dynamic Range
unweighted
A weighted
AES-17, -60dB Method
(all sensitivities)
Distortion (20Hz-20 KHz)
+4dBu (max)
2dB below clip (max)
(all sensitivities)
IN
OUT
THRU
>115dB
>118dB>
>112dB
115dB
>110dB
>113dB
<0.009% THD+N
<0.009% THD+N
<0.009% THD+N
<0.009% THD+N
<0.009% THD+N
<0.009% THD+N
Crosstalk (20Hz - 20KHz)
inter-channel (max)
inter-channel (typ)
intra-channel (max)
intra-channel (typ)
>75dB
>90dB
>85dB
>100dB
Frequency Response
20Hz - 20KHz (max)
20Hz - 20KHz (typ)
+/- 0.5dB
+/- 0.2dB
Input Impedance
Balanced (nominal)
Unbalanced (nominal)
10K ohms
10K ohms
Common-Mode Rejection
20Hz - 20KHz (min)
20Hz - 20KHz (typ)
>54dB
>60dB
Input Sensitivities
Vrms: 1.5, 3, 9, 18dBU: 5.7, 11.8, 21.3, 27.3dBV: 3.5, 9.5, 19.1, 25.1
Audio Converters
24 bit, 48KHz, in and out
Mute
infinite attenuation
EN
Delay
Standard CobraNet Latency Low Latency
BASIS to Network
Analog input through full DSP chain to CobraNet output 7.042 milliseconds
4.375 milliseconds
Network to BASIS
CobraNet input through full DSP chain to analog output 6.313 milliseconds
3.646 milliseconds
BASIS to BASIS
Analog input through full DSP chain, over CobraNet network,
through full DSP chain, to analog outputs
8.021 milliseconds
5.354 milliseconds
BASIS in stand-alone mode
Analog input through full DSP chain to analog outputs
2.355 milliseconds (Default Group Delay)
Program Outputs
Connector Type
Cable TypeV
Qualified Length
8
4 HD-15 dataport connections
GA Monitor Cable OK, QSC DPC-X preferred
10 m
Program Inputs
Connector Type
Type
Grounding
Pinout
8
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
Specifications are subject to change without notice.
23
EN
Control Room Foldback Monitoring
Connector Type
Pinout
Tap points
5-pin "Phoenix Style" (a.k.a. "Euro Style") detachable terminal blocks
1:+(input) 2:-(output) 3:CHASSIS GND 4:-(output) 5:+(output)
8 internal input, 8 internal output, 8 amplifier (pre-, post-, amplifier) software selectable
Monitor Input
Monitor Signal (unit off)
Maximum level
Impedance (nominal)
CMRR, 20Hz-20KHz
Unity gain connection, relay bypass
+21 dBu
10,000 ohms
>54 dB
Monitor Output
Monitor
Freq. Resp. 20Hz-20KHz
Distortion (20Hz-20KHz)
Noise Floor
Output Impedance (nom)
Output Load (min)
Sum of Monitor Input and signal from internal monitor tap point(s)
+/- 0.5dB
<0.05% @ +4dBu
>90dB
100 Ohms
600 Ohms
Monitor Level
Control Range (nom)
0dB to -95.5dB in 0.5dB steps
Relay Outputs
Connector Type
Configuration
Pinout
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 Outputs4 discrete outputs
Connector Type
Configuration
Pinout
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
Configuration
Pinout
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
QSControl
Neutrik Ethercon RJ45 Ruggedized Data Connector
CobraNet
Neutrik Ethercon RJ45 Ruggedized Data Connector
Indicators
QSControl Status
CobraNet Status
Power
Diagnostic
DataPort Status (Port)
LCD Data Display
Yellow Link, Tx, Rx, front panel / Green Link, Tx, Rx, rear panel
Yellow Link, TX, RX, front and rear panel
Blue, front panel
Red, front panel
Tri-state (red, green, yellow), front panel
2 line x 16 character, backlit, front panel
24
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:
www.qscaudio.com
E-mail:
[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 www.qscaudio.com.
Contact us at 800-854-4079 or visit our website at www.qscaudio.com.
QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA
©2003 “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.
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