QSC CM16a Hardware Manual - page 19
19
SPECIFICATIONS
INPUT SIGNAL PROCESSING
Frequency response
20 Hz–20 kHz ±0.5 dB
10 Hz–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 inverted
Level control range
-95.5 to 0 dB in 0.5 dB steps
Precision attenuator
better than 112 dB below transients (“zipper” maximum output noise)
Mute
>90 dB attenuation
INPUTS
Program inputs
16
Paging inputs
1
Monitor bus input
1
Connector type
Terminal block connectors (also called “Euro” or “Phoenix style”), detachable
Type
Electronically balanced
Grounding
All shield terminals connected to chassis
Nominal level
1V/3V rms selectable
Maximum level
+21 dBu
Impedance
10 kOhm balanced
Common-mode rejection
Typical, >50 dB, 20 Hz–20 kHz
Worst Case, >40 dB at 20 kHz
Crosstalk (interchannel within DataPort pair)
>75 dB separation, 20 Hz–20 kHz
Crosstalk (intrachannel, between DataPort pairs) >85 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
Pinout
Special, see appendix
Cable type
QSC DataPort Cable
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
75 Ohms balanced
Output load
600 Ohms minimum
POWER AMPLIFIER OUTPUT PROCESSING/MONITORING
Output short detect*
Senses load <1 Ohm for Stereo/Parallel modes; <2 Ohms in Bridged Mono mode. Threshold is adjustable in software
Output open detect*
Senses load >60 Ohms. 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.
Amp gain*
Determines amplifier gain control setting, range automatically matches to amplifier model.
*Signal level must be greater than -32 dB, referenced to maximum output of amplifier
POWER AMPLIFIER MANAGEMENT
Power amplifier interface compatibility
QSC DataPort equipped amplifiers
Connector and cable
QSC DataPort cable, 2 meters length (for longer runs, contact QSC’s Technical Services Dept.)
Amplifiers
16 amp channels grouped in pairs
Amplifier status monitor
Clip indicator
Senses channel clipping
Bridge mode status
Sense bridge mode setting
Protect indicator
Senses amplifier protect status
Temperature meter
Reports amplifier operating temperature
Over-Temp. Alert
Software adjustable threshold
AC mode control
Switches amplifier between normal and standby mode
AC power indicator
Indicates operate, standby, or power-down mode
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE