QSC Audio CM16a manual Power amplifier management, Control room foldback monitoring

Compatibility

QSC Data Port equipped amplifiers

Connector and cable

HD-15 VGA cable, 2 meters length

qualified (for longer runs, contact

QSC’s Technical Services Department)

Amplifiers

Up to eight 2-Ch. amplifiers or four 4-Ch.

amplifiers ( or some combination thereof)

Amplifier status monitor

Clip indicator

Senses channel clipping

Protect indicator

Senses amplifier protect status

Temperature meter

Reports amplifier operating

temperature

Over-Temp. Alert

Software adjustable threshold

AC power control

AC mode control

Switches amplifier between

normal and standby mode

AC power indicator

Indicates operate, standby, or

power-down mode

Signal monitoring buses

1

(per CM16)

Number of Channels

4

Internal signal tap points

Pre-fader input signal

16

Post-fader input signal

16

Power amplifier output

16

Monitor input

Mixed with tap point signal at

unity gain

Nominal level

+4 dBu

Maximum level

+21 dBu

Input impedance

10 kOhm balanced

Configuration

Electronically balanced, shield

connected to chassis

Common-mode rejection

Typical, >50 dB, 20 Hz - 20 kHz

Worst case, >40 dB, 20 Hz-20kHz

Output

Sum of Monitor input and

signal from internal monitor

tap point

Frequency response

25 Hz–20 kHz ±0.5 dB

Distortion

<0.05% THD @ +4 dBu out

Noise floor

-90.5 dB

Nominal level

+4 dBu

Maximum level

+21 dBu

Output impedance

75 Ohms balanced

Output load

600 Ohms minimum

Configuration

Active balanced

Level

Adjusts amplitude of signal from

tap point

Monitor in to monitor out

0 dB, ±0.5 dB

Control range

-95.5 to 0 dB in 0.5 dB steps

Inputs

1 discrete input

Configuration

Single-ended input

Resistance for closure detect <1kOhm max

Resistance for open detect

>5 kOhm min

Input Voltage Limit

7.000 VDC maximum

Output

1 discrete output

Configuration

Electromechanical relay, dry

contacts, floating, C, NC, NO

Steady-state current (max.)

0.5 A

Switched current (max.)

0.25 A

Ground isolation

70 volts maximum

Connector

“Phoenix-style” (a.k.a.“Euro-style”)

detachable terminal block connectors