QSC DSP-3' Manual descarregar pdf (Página 18)

Section 3: Specifications

Frequency response 20 Hz–10 kHz ±0.3 dB

20 Hz–20 kHz ±0.7 dB

Distortion <0.01% THD+N @ +4 dBu out

Dynamic range >95 dB unweighted

20 Hz–20 kHz

Polarity In-phase or inverted

Mute >90 dB attenuation

Inputs

Program inputs 2

Connector type “Phoenix-style” (a.k.a.

“Euro-style”) detachable

terminal blocks

Type Electronically balanced

Grounding All shield terminals connected to

chassis

Input sensitivity -10dBV, +4dBu, +12dBu, +18dBu

selectable

Impedance 7.5 K Ohm balanced

4.2 K Ohm unbalanced

Input Signal Processing

Common-mode rejection Typical, >50 dB, 20 Hz–20 kHz

Worst Case, >40 dB at 20 kHz

rolling off to >40 dB at 20 kHz

Crosstalk (inter- >75 dB separation, 20 Hz–20 kHz

channel within

Data Port pair)

Outputs

Program outputs 2 (via HD-15)

Connector type HD-15 DataPort connection

Pinout Special, see appendix

Cable type VGA monitor cable

Qualified length 2 meters

Daisy-chain output 2 (1 per channel)

Connector “Phoenix-style” (a.k.a.

“Euro-style”) detachable

terminal blocks

Type Electronically balanced

Grounding Shield terminal connected to

chassis

Output level 0dB, -6dB selectable

Output impedance 600 Ohms balanced

18

Power amplifier connectivity

Power amplifier interface

Compatibility all QSC and non- QSC amplifiers

Full-feature set all QSC DataPort equipped amplifiers

Connector and cable

HD-15 VGA cable, 2 meters length

qualified (for longer runs, contact

QSC’s Technical Services Department)

RS-232 Port

Cable Type Null-Modem (a.k.a. Laplink)

Contact closure input (sense)

Inputs 1 discrete input

Configuration Single-ended input

Resistance for closure detect <1.3 K Ohms

Resistance for open detect >5 K Ohms

Amplifiers one 2-Ch. amplifier per DSP-3

Amplifier status monitor

Clip indicator Senses channel clipping

Protect indicator Senses amplifier protect status

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