QSC Audio DSP-30 - Manual (Page 22)

22
Specifications
Frequency response 20 Hz–20 kHz ±0.4 dB
at 1dB below full
scale input voltage (all sensitivities)
Distortion <0.007% THD+N @ 1dB below full scale output, all sensitivities, 20 Hz– 20 kHz
Group Delay 1.00 milliseconds
Dynamic range >95dB unweighted, 1.5V, 4V and 9V input sensitivity
AES-17 -60dB method >93dB unweighted, 18V input sensitivity
Polarity In-phase or inverted
Mute >95 dB attenuation
Indicators Power: 1 blue LED Channel 1 and Channel 2 signal presence: 2 green LED’s
Preset Display: 7 segment LED
Audio Converters 24 bit, 48 kHz.
Outputs
Program outputs 2
Connector 3-pin male XLR receptacle
Type Electronically balanced
Grounding All shield terminals connected to
chassis
Output level Level and units are selectable
(full scale) in software interface
Maximum Output 9.3 Vrms (+21.5 dBu)
Output Pad -6dB
Output impedance 600 Ohms balanced
RS-232 Port
Note: Specifications are subject to change without notice.
Contact Closure Input (sense)
Inputs 1 discrete input, TTL compatible, pin #9 of RS-232 port
Configuration Single-ended input, pull LOW (to GND, pin 5) for closure detect
Resistance for closure detect <150 Ohms
Resistance for open detect
>1.9 K Ohms
Maximum Voltage +9 VDC
Input/Output Termination: All XLR’s: pin 2- hot (+), pin 3- cold ( - ), pin 1- ground / All 1/4” TRS: tip- hot, ring- cold, sleeve-ground
Inputs
Program inputs 2
Connector 3-pin female XLR -TRS 1/4” combo jack
Type Electronically balanced
Grounding All shield terminals connect to chassis
Input sensitivity Level and units are selectable
(full scale input level) in software interface
Impedance 8.3 K Ohm balanced
3.7 K Ohm unbalanced
Common-mode rejection >54 dB, 20 Hz–20 kHz
Crosstalk >80 dB separation, 20 Hz–20 kHz
Port Description RS-232, female, straight through
Cable Type supplied: 9-pin serial cable, male-to-female (serial extension cable)
Maximum Cable Length 25 feet (7.6 meters)