Specifications - QSC DSP-30 Hardware Manual

Specifications

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