QSC Audio Specifications- ISIS 215PCM Processors, Digital Signal Processor Specifications

DataPorts Used

Amplifier status monitor features

System Interface Compatibility Cable

Specifications- ISIS 215PCM Processors

Digital Signal Processor Specifications

Type	Freely configurable, custom DSP with software for PC. Computer connection needed only for set up.
Signal Processing	Two QSC DSP-3 Processors, 24 bit, 48 kHz., one for each amplifier
Frequency response at 3 dB below full scale input voltage	20 Hz– 10 kHz ±0.3 dB (XLR inputs on 215PCM rear panel)
	20 Hz– 20 kHz ±0.7 dB (XLR inputs on 215PCM rear panel)
	20 Hz– 20 kHz±0.2 dB (if using DataPort input on Processors)
Distortion	<0.01% THD+N @ +4 dBu out
Delay (throughput)	1.00 millisecond
Dynamic range	>93 dB unweighted, 20 Hz– 20 kHz, 1.5V, 4V and 9V sensitivity
	>88dB unweighted, 20 Hz– 20 kHz, 18V sensitivity
Polarity	In-phase or inverted
Mute	>90 dB attenuation
Input Connector type	True-Cannon XLR connectors mounted on 215PCM rear panel
Type	Electronically balanced
Grounding	All shield terminals connected to chassis
Input sensitivity, full scale	1.5, 4.0, 9.0 or 18.0 Vrms, (Units are selectable in software interface)
	6, 14.5, 21.5 or 27.5 dBu
	3.5, 12.0, 19.0, 25.0 dBv
Input Impedance	Discrete Mode- 8.3 k ohm balanced, 3.7 k ohm unbalanced
	Combination Mode- 4.15 k ohm balanced, 1.85 k ohm unbalanced
Common-mode rejection	>50 dB, 20 Hz– 20 kHz
Crosstalk	>75 dB separation, 20 Hz– 20 kHz
Outputs	Program outputs hard wired to amplifiers
Post-DSP auxillary outputs	Three- 2 (Top Box), 1 (Subwoofer, CH2 output not used)
Type	Electronically balanced detachable terminal blocks
Grounding	Shield terminal connected to chassis
Post-DSP auxillary output level, full scale	6.0 or 4.0 Vrms; 18.0 or 14.5 dBu; 15.5 or 12.0 dBv (Units are selectable in software interface)
Output impedance	600 ohms balanced

QSC System Manager Connectivity (applicable only to users employing QSC System Manager)

QSC DataPort amplifier network monitors

QSC DPC-X DataPort cable, male-male (various lengths are available , contact QSC’s Technical

Services Department)

2 (1 per Processor)

Clip indicator	Senses channel clipping
Protect indicator	Senses amplifier protect status
AC Power Status	Reports standby/operate mode
RS-232 Ports (used for configuring each Processor’s DSP chain)
Number of ports	Two (one for each processor)
Cable Type	Normal 9-pin serial cable, male-to-female
Maximum Length	25 feet (7.6 meters)
Communication Settings	Automatic (unless other software using port)

DSP Capabilities (freely configurable DSP “blocks”, use as many of any block until DSP “resources” are consumed)
High-Pass Filter	Low-Pass Filter		High-Shelf Filter	Low-Shelf Filter	Limiter	Compressor	Delay
Polarity	Parametric EQ		Level Meter	2 to 1 Mixer	1 to 2 Splitter	Mute	Fader
Pink & White Noise Source		Variable Frequency Tone Source		Clip & Protect Indication available if operating the DSP real-time from PC
External Contact Closure Sensing (pin #9 of RS-232, operates with ”Switched Gain” objects in Signal Manager software)

Note: Specifications are subject to change without notice.

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