Sound Performance Lab 9842 manual Connections, GND Lift

Connections

1
Input					Input 1
1
Output					Output 1
2
Input					Input 2
2
Output					Output 2
				)–( = 3 (+)/XLR=Wiring2 GND/ = 1 :
3
Input					Input 3
3
Output					Output 3
4
Input					Input 4
4
Output					Output 4
	Serial #		Sound Performance Lab	SPL electronics GmbH 41372 Niederkrüchten Germany	Made in Germany
					GND LIFT
CAUTION	RISK OF ELECTRIC SHOCK DO NOT OPEN	AVIS: RISQUE DE CHOC ÉLECTRIQUE - NE PAS OUVRIR	TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. DISCONNECT MAINS		VOLTAGE/FUSE W A R N I N G	DESIGNER,model 9842
			230 V115 V	60 Hz Fuse: 400mA
				V 230
				50 Hz Fuse: 200mA REMOVINGBEFORECOVER.
					soundperformancelab.com	panel TRANSIENT
						Rear

Before connecting the TRANSIENT DESIGNER switch power off at all connected units.

The TRANSIENT DESIGNER is fitted with XLR-connectors for balanced operation. The following illustration shows the pin-wiring:

2		1	Pin wiring: XLR input	1		2	Pin wiring: XLR output
	3		1 = GND, 2 = hot (+), 3 = cold (-)		3		1 = GND, 2 = hot (+), 3 = cold (-)

To ensure optimal signal quality, SPL has developed a new hybrid- component balanced input/output stage using all laser-trimmed resistors with a tolerance of 0.01%. This approach has resulted in an exceptionally high CCMR (common mode rejection); -80 dB at 1kHz and -75 dB at 10 kHz.

Should the need arise to use the XLR connectors in an unba- lanced system, pin 3 of the XLRs should be grounded. The follo- wing illustration shows how to properly unbalance a balanced signal:

6 Transient Designer