QSC Audio Network Audio Systems specifications Specifications

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Specifications

Input Signal

 

 

Frequency Response

20 Hz to 20 kHz, ±0.5 dB

 

10 Hz to 80 kHz, ±3 dB

 

 

Distortion

<0.01% THD+N @ +4 dBu out

 

(page input <0.03%)

 

 

Dynamic Range

>110 dB unweighted (20 Hz–20 kHz)

 

(page input >100 dB)

 

 

Polarity

In-phase or reversed

 

 

Level Control Range

-95.5 to 0 dB in 0.5 dB steps

 

 

 

Precision Attenuator Transients

 

 

(“zipper noise”)

better than 112 dB below maximum output

 

 

Mute

>90 dB attenuation

 

 

 

Inputs

 

 

Program inputs

16

 

Paging input

1 Dedicated input with configurable

 

routing to any or all 16 input sections

Monitor bus input

1

 

Connector type

“Phoenix-style” (a.k.a. “Euro-style”)

 

detachable terminal blocks

Type

Electronically balanced

Grounding

All shield terminals connected

 

to chassis

Nominal level

1V/3V rms selectable (-10 dBV/+4 dBu)

Maximum level

+21 dBu

Impedance

25 kΩ

balanced

Common-mode rejection

Typical, >50 dB, 20 Hz-20 kHz

 

Worst Case, >40 dB at 20 kHz

Crosstalk (inter-channel

 

 

within DataPort pair)

>75 dB separation (20 Hz–20 kHz)

Crosstalk (intra-channel

 

 

between DataPorts)

>90 dB separation, 20 Hz-20 kHz

 

measured with all inputs and

 

outputs terminated

 

 

 

Outputs

 

 

Program outputs

16 (via HD-15)

Connector type

8 HD-15 DataPort connections

Cable type

VGA monitor cable 1

Qualified length

2 meters

Monitor output

1

 

Connector

“Phoenix-style” (a.k.a. “Euro-style”)

 

detachable terminal blocks

Type

Electronically balanced

Grounding

Shield terminal connected to chassis

Nominal level

+4 dBu

Maximum level

+21 dBu

Output impedance

75Ω

balanced

Output load

600Ω

min

 

Power Amplifier Output Monitoring

Output Short Detect*

Senses load <1Ω for Stereo/Parallel modes;

 

<2Ω Bridge Mono mode (default threshold)

 

Threshold is adjustable in software

 

 

Output Open Detect*

Senses load >60Ω (default threshold)

 

Threshold is adjustable in software

 

 

Output Voltage Meter

Range automatically matches to

 

amplifier model used

 

 

Output Current Meter

Range automatically matches to

 

amplifier model used

 

 

Amplifier Headroom

Reports remaining available power

 

 

Amplifier Gain*

Calculates and reports amplifier gain

 

(knob setting)

Power Amplifier Management

 

 

 

Power Amplifier Interface

 

 

 

Compatibility

QSC DataPort-equipped amplifiers

Connector and cable

HD-15 VGA cable 1, 2 meters length 2

 

qualified (for longer runs, contact QSC’s

 

Technical Services Department)

 

 

Amplifiers

Up to 16 channels (8 DataPorts) of

 

QSC DataPort-equipped amplifiers

 

 

 

 

Amplifier AC Power Control

 

 

 

AC mode control

Switches amplifier between operate

 

and standby mode

AC power indicator

Indicates operate, standby, or

 

power-down mode

 

 

 

 

Amplifier Status Monitor

 

 

 

Clip indicator

Senses channel clip status

Protect indicator

Senses amplifier protect status

Temperature meter

Reports amplifier operating temperature

Over-temp. alert

Software adjustable threshold (80°C default)

 

 

Control Room Foldback Monitoring

 

Number of Signal

 

 

 

Monitoring Buses per CM16a

 

1

 

 

 

 

Number of Channels per CM16a

 

4 (Maximum number assigned

 

 

to monitor mix at one time)

 

 

 

 

Internal Signal Monitor Points

 

 

 

(each with individual level controls)

 

 

Pre-fader input signal

 

16

 

Post-fader input signal

 

16

 

Power amplifier output

 

16

 

 

 

Monitor Input

Summed with internal monitor mix

 

at unity gain

 

Monitor in to monitor out

0 dB, ±1 dB

 

Nominal level

+4 dBu

 

Maximum level

+21 dBu

 

Input impedance

10kΩ

balanced

 

Configuration

Active balanced, shield connected to chassis

Common-mode rejection

Worst case, >54 dB at 20 Hz rolling off to

 

>40 dB at 20 kHz

 

 

Typical case, >50 dB 20 Hz-20 kHz

 

 

Output

Sum of external monitor input and signals

 

from internal monitor mix

Frequency response

20 Hz–20 kHz, ± 0.5 dB

Distortion

<.05% THD @ +4 dBu out

Dynamic range

>90.5 dB unweighted, 22 Hz–22 kHz

Noise floor

-90.5 dB

 

Nominal level

+4 dBu

 

Maximum level

+21 dBu

 

Output impedance

75Ω

balanced

 

Output load

600Ω

min

 

Configuration

Active balanced

 

 

 

 

 

RS-232 Port

 

 

 

Cable Type

Null-Modem (a.k.a. Laplink), female 9-pin

 

D-sub chassis connector

 

 

 

Port Settings

Bits per Second

9600

 

Data Bits

8

 

Parity

none

 

Stop Bits

1

 

Flow Control

Xon/Xoff

Page Input

*Signal level must be higher than -32 dB, referenced to maximum output of amplifier

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Contents System Controller Key Components of QSControlCM16a Amplifier Network Monitor Control Application SoftwareCM16a QSControl Amplifier Network MonitorSpecifications General Architect’s and Engineer’s SpecificationContact Closure Inputs and Outputs Network InterfaceQSControl Network Audio Systems Block Diagram of the CM16aBenefits of a Custom Application QSControl SoftwareSystem Manager Custom Applications

Network Audio Systems specifications

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