QSC Audio BASIS 922uz User Manual

BASIS 922uz

QSControl.net™ Digital System

QSControl.net, QSC’s next generation network audio
system, achieves the seamless integration of the
company’s signal transport, control, processing, and
monitoring technologies. QSControl.net brings together
QSC’s digital, power amplification and loudspeaker
products into a unified system that enables the user
to administrate it all via a fully integrated graphical
user interface. The new generation BASIS™ devices
are designed to operate under the company’s
QSControl.net platform.

BASIS 922uz

The BASIS platform meets the control, monitoring, signal
transport and processing needs of amplification and
loudspeaker systems over an Ethernet network. The BASIS
922uz units combine three distinct QSC technologies
within a single hardware unit. Amplifier and loudspeaker
control, monitoring and protection, configurable DSP, and
CobraNet™ audio transport are seamlessly integrated into
one powerful single RU package.

Through QSControl.net, QSC’s BASIS and next-generation
RAVE and DSP products can be networked together and
controlled from a single software interface. In addition,
multiple networked computers can be set up to control
and monitor all of the units simultaneously.

Fixed Latency DSP

Users of most other configurable DSP systems are
familiar with a variable latency inherent in the processing
configuration. Add more processing blocks and you
also add delay, whether you want it or not. QSC’s DSP
engine is unique in having a short and fixed processing
latency through the DSP subsystem. When the A/D and
D/A converters are included, the total analog-to-analog
latency of a single unit is a negligible 2.354 milliseconds.
QSC’s fixed latency DSP is configurable DSP that stays
fast and predictable from one configuration to the next.

For more information, visit www.qscontrol.net

QSC, the QSC logo, QSContol.net and BASIS are registered
trademarks of QSC Audio Products, LLC in the U.S. Patent and
Trademark office and other countries. THX is a trademark of
THX Ltd. CobraNet is a trademark of Cirrus Logic, Inc. All other
trademarks are the property of their respective owners. Patents
may apply or be pending.

Inputs DSP Outputs

Analog CobraNet DataPort CobraNet

8 universal mic/line 16 of 32 24 x 24 4(8 channels) 32

Features

• Universal inputs - mic/line with pre-amps and phantom power

• Amplifier and loudspeaker control, monitoring and protection

• Configurable DSP functions and signal paths

• Fixed latency DSP engine

• Ethernet controllable

• CobraNet audio transport with new intuitive GUI

• Two Ethernet ports – CobraNet and control can be run over a single cable
or be divided between the two ports. The CobraNet port is 100Base-T. The
control port is 10Base-T

• Each unit can store eight design configurations that can be changed on the fly

• Snapshots can recall config or block and/or parameter settings

• THX™ approved for professional cinema applications

DSP functions include, but are not limited to:

• Matrix mixer – any size, up to 24 x 24

• Automixers – gain sharing

• Routers – any size, up to 24 x 24

• Gain controls – any channel count, up to 24

• Graphic equalizers

• Filters – high-pass, low-pass, all-pass, shelf, parametric, parametric shelf,
Butterworth high and low-pass, Linkwitz-Riley high and low-pass,
Bessel-Thomson high and low-pass

• Crossovers – Linkwitz-Riley, Butterworth, Bessel-Thomson in-phase, Bessel­Thomson symmetrical, 2-way, 3-way, and 4-way general purpose adjustable

• Compressors, peak limiters, AGC’s, gates, dynamics processor

• Duckers – up to 8 channels, up to 60 seconds fade in and fade out times,
priority mix

• Pink noise, white noise, sine generators

• Delays

• Macros – user-definable custom blocks with password protection

BASIS 922uz

PERFORMANCE

Dynamic Range (AES-17, -60 dB method, all sensitivities) In Out Thru
Unweighted > 110 dB > 112 dB 108 dB
A weighted > 113 dB > 115 dB 111 dB
Distortion (20 Hz – 20 kHz, all sensitivities)
Gain = 0 – 30 dB < 0.008% THD+N < 0.009% THD+N < 0.008% THD+N
Gain > 30 dB < 0.05% THD+N < 0.009% THD+N < 0.05% THD+N
Crosstalk (20 Hz – 20 kHz)
Inter-channel (maximum) > 75 dB
Inter-channel (typical) > 90 dB
Intra-channel (maximum) > 85 dB
Intra-channel (typical) > 100 dB
Frequency Response
20 Hz – 20 kHz (maximum) +/- 0.5 dB
20 Hz – 20 kHz (typical) +/- 0.2 dB

Audio Converters 24 bit, 48 kHz, in and out
Mute Infinite attenuation
Delay Standard CobraNet™ latency Low latency

BASIS™ to Network 7.104 milliseconds 4.438 milliseconds
Analog input through full DSP chain to CobraNet output
Network to BASIS 6.313 milliseconds 3.646 milliseconds
CobraNet input through full DSP chain to analog output
BASIS to BASIS 8.083 milliseconds 5.417 milliseconds
Analog input through full DSP chain, over CobraNet network,
through full DSP chain, to analog outputs
BASIS in stand-alone mode 2.354 milliseconds (default group delay)
Analog input through full DSP chain to analog outputs
INPUTS/OUTPUTS
Program Inputs 8 inputs
Connector type 3-pin “phoenix style” (a.k.a. “Euro style”) detachable terminal blocks
Type Electrically balanced
Grounding All shield terminals connected to chassis
Pinout 1:+ / 2:- / 3:CHASSIS GND
Input Impedance (nominal) Balanced: 6.81k ohms / Unbalanced: 13.6k ohms
Common-mode Rejection 20 Hz – 20 kHz (minimum): > 54 dB / 20 Hz – 20 kHz (typical): > 60 dB
E.I.N. (maximum) 150Ω, 30 dB: -124.5 dBu / 150Ω, 60 dB: -125.0 dBu
Input Sensitivities (variable) Vrms: 0.9 mV to 15.46 V / dBu: -62.2 to +26 dBu / dBV: -64.4 to +23.7 dBV
Phantom Power (per IEC 1938 [1996]) +48 V (software selectable)
Program Outputs 8 outputs
Connector Type 4 HD-15 DataPort connections
Cable Type QSC DataPort cable, QSC p-n DPC-x (“x” designates cable length in feet)
Available “Stock” Lengths 1, 2, 3, 4, 5, 6, 10, and 20 ft., custom lengths available
Maximum Qualified Length 328 ft. (100 m) using QSC DP cable only / Non QSC cable limited to 6 ft. (audio only)

MONITOR

Control Room Foldback Monitoring
Connector type 5-pin “phoenix style” (a.k.a. “Euro style”) detachable terminal blocks
Pinout 1:+(input) / 2:-(input) / 3:CHASSIS GND / 4:-(output) / 5:+(output)
Tap Points 8 internal input / 8 internal output / 8 amplifier (pre-, post-, amplifier) software selectable
Monitor Input
Monitor Signal (unit off) Unity gain connection, relay bypass
Maximum Level +21 dBu
Impedance (nominal) 10k ohms
CMRR, 20 Hz – 20 kHz > 54 dB
Monitor Output
Monitor Sum of monitor input and signal from internal monitor tap point(s)
Frequency Response (20 Hz – 20 kHz) +/- 0.5 dB
Distortion (20 Hz – 20 kHz) < 0.05% at +4 dBu
Noise Floor > 90 dB
Output Impedance (nominal) 100Ω
Output Load (minimum) 600Ω
Monitor Level
Control Range (nominal) 0 dB to -95.5 dB in 0.5 dB steps
CONTROL INPUTS/OUTOUTS
Relay Outputs 2 discrete floating relay switch outputs
Connector Type 3-pin “phoenix style” (a.k.a. “Euro style”) detachable terminal blocks
Configuration Electromechanical relay
Pinout 1:NC / 2:NO / 3:COM
Switching Capacity (nominal) 1A 30 VDC
Logic Outputs 4 discrete outputs
Connector Type 2-pin “phoenix style” (a.k.a. “Euro style”) detachable terminal blocks
Configuration Single-ended, TTL compatible
Pinout 1:+(Signal) 2:-(CHASSIS GND)
Omni Inputs 6 discrete inputs for T TL logic, voltage control or passive resistance
Connector Type 2-pin “phoenix style” (a.k.a. “Euro style”) detachable terminal blocks
Configuration Single-ended, ground referenced
Pinout 1:+(Signal) / 2:-(CHASSIS GND)
Normal Operating Range Reads signals between 0-5 V nominally
Potentiometer Operation Use 10k ohms for full range
Voltage Tolerance +/- 48 V
Current Output 0.5 mA with 10k pot (for passive resistive controls)

RS-232 Port Female DB9 connector (setup and diagnostics purposes only)
QSControl Port Neutrik Ethercon RJ45 ruggedized data connector
CobraNet Port Neutrik Ethercon RJ45 ruggedized data connector
Indicators

QSControl Status Yellow Link, Tx, Rx, front panel / Green Link, Tx, Rx, rear panel
CobraNet Status Yellow Link, Tx, Rx, front and rear panel
Power Blue, front panel
Diagnostic Red, front panel
DataPort Status (port) Tri-state (red, green, yellow), front panel
LCD Data Display 2 line x 16 character, backlit, front panel
Signal Presence Tri-state (red, green, yellow), front panel

Specifications

Specifications subject to change without notice.

1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: [phone]

BASIS 922uz - 0 6/18/08

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