QSC Audio DSP-30 Specifications, Audio Converters, 24 bit, 48 kHz, RS-232 Port, at 1dB below full

Specifications

Audio Converters	24 bit, 48 kHz.
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

Inputs
Program inputs	2
Connector	3-pin female XLR -TRS 1/4” combo jack
Type	Electronically balanced
Grounding	All shield terminals connect to chassis

Outputs
Program outputs	2
Connector	3-pin male XLR receptacle
Type	Electronically balanced
Grounding	All shield terminals connected 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

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

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	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)

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

Note: Specifications are subject to change without notice.

22