Section 4: Specifications - QSC CM16a Hardware Manual

Section 4:
Specifications
Input Signal Processing
Frequency response
Distortion
Dynamic range
Polarity
Level control range
Precision attenuator
transients ("zipper"
noise)
Mute
Inputs
Program inputs
Paging inputs
Monitor bus input
Connector type
Type
Grounding
Nominal level
Maximum level
Impedance
Power amplifier output processing
Power amplifier output monitoring
Output short detect*
Output open detect*
Output voltage meter
Output current meter
*Signal level must be greater than -32 dB, referenced to maximum output of amplifier
20 Hz–20 kHz ±0.5 dB
10 Hz–80 kHz ±3 dB
<0.01% THD+N @ +4 dBu out
(page input <0.03%)
>110 dB unweighted
20 Hz–20 kHz
(page input >100 dB)
In-phase or inverted
-95.5 to 0 dB in 0.5 dB steps
better than 112 dB below
maximum output
>90 dB attenuation
16
1
1
"Phoenix-style" (a.k.a.
"Euro-style") detachable
terminal blocks
Electronically balanced
All shield terminals connected to
chassis
1V/3V rms selectable
+21 dBu
10 kOhm balanced
Senses load <1 Ohm for Stereo/
Parallel modes; <2 Ohms in Bridged Mono mode
Threshold is adjustable in software
Senses load >60 Ohms
Threshold is adjustable in software
Range automatically matches to
amplifier model used
Range automatically matches to
amplifier model used
Common-mode rejection
Crosstalk (inter-
channel within
Data Port pair)
Crosstalk (intra-
channel, between
Data Port pairs)
Outputs
Program outputs
Connector type
Pinout
Cable type
Qualified length
Monitor output
Connector
Type
Grounding
Nominal level
Maximum level
Output impedance
Output load
Typical, >50 dB, 20 Hz–20 kHz
Worst Case, >40 dB at 20 kHz
>75 dB separation, 20 Hz–20 kHz
>85 dB separation,
20 Hz–20 kHz
measured with all inputs and
outputs terminated
16 (via HD-15)
8 HD-15 data port connections
Special, see appendix
VGA monitor cable
2 meters
1
"Phoenix-style" (a.k.a.
"Euro-style") detachable
terminal blocks
Electronically balanced
Shield terminal connected to
chassis
+4 dBu
+21 dBu
75 Ohms balanced
600 Ohms minimum
33