Section 3:
Specifications
Frequency response
20 Hz–10 kHz ±0.3 dB (term. block inputs)
at 3dB below full
20 Hz–20 kHz ±0.7 dB (term. block inputs)
scale input voltage
20 Hz–20 kHz±0.2 dB (DataPort inputs)
Distortion
<0.01% THD+N @ +4 dBu out
Delay (throughput)
687.5 microseconds
Dynamic range
>93 dB unweighted
20 Hz–20 kHz, 1.5V, 4V and 9V sensitivity
>88dB unweighted
20 Hz–20kHz, 18V sensitivity
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
1.5, 4.0, 9.0 or 18.0 Vrms
(full scale input level)
6, 14.5, 21.5 or 27.5 dBu
3.5, 12.0, 19.0 or 25.0 dBv
Units are selectable in software interface
Impedance
8.3 K Ohm balanced
3.7 K Ohm unbalanced
Signal Processing 24 bit, 48 kHz.
Common-mode rejection
>50 dB, 20 Hz–20 kHz
Crosstalk
>75 dB separation, 20 Hz–20 kHz
Outputs
Program outputs
2 (via HD-15)
Connector type
HD-15 DataPort connection
Pinout
Special, see appendix
Cable type
QSC DataPort 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
6.0 or 4.0 Vrms
(full scale)
18.0 or 14.5 dBu
15.5 or 12.0 dBv
Output impedance
600 Ohms balanced
27
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
9-pin serial cable, male-to-female
Maximum Length
25 feet (7.6 meters)
Contact closure input (sense)
Inputs
1 discrete input (pin #9 of RS-232 port)
Configuration
Single-ended input
Resistance for closure detect <150 Ohms
Resistance for open detect
>1.9 K Ohms
TTL Compatible
Maximum Voltage= +9vdc
Amplifiers
one 2-Ch. amplifier per DSP-3
Amplifier status monitor
Clip indicator
Senses channel clipping
Protect indicator
Senses amplifier protect status
(status monitoring not available for non-DataPort amplifiers)
Note: Specifications are subject to change without notice.
