Dynacord DPA 4140, DPA 4120 owner manual Contents

Contents

	Performance Features			23
	Indicators, controls and connections			25
1.	Utilization		.....................................................................................................................................................	27
2.	Installation			27
3.	Before the first operation			27
	3.1	Mains operation		27
	3.2	Battery operation 24V DC		28
4.	INPUT			28
5.	Outputs			29
	5.1	POWER OUTPUT		29
	5.2	POWER OUTPUT for 100V (70V or 50V) loudspeaker systems		29
	5.3	SINGLE CALL and obligatory reception relays OVERRIDE BYPASS		29
	5.4	POWER OUTPUT for low impedance loudspeaker systems		29
	5.5	MONITOR output		30
	5.6	REMOTE CONTROL connector (only NRS 90225)		30
6.	Indicators		.....................................................................................................................................................	30
	6.1	STANDBY indicator		30
	6.2	READY indicator		30
	6.3	PROTECT indicator		30
	6.4	GROUND FAULT indicator		30
	6.5	Aussteuerungskontrolle und CLIP-Anzeige		31
7.	Switching the output voltage			31
8.	Enhanced application field			32
	8.1	General input module NRS 90225		32
	8.2	Remote module NRS 90222		32
	8.3	NRS 90208 input transformer for the floating, balanced input		33
	8.4	NRS 90227 output transformer for the floating, balanced monitor output		33
	8.5	NRS 90224 pilot tone and ground fault surveillance		35
	8.5.1		Pilot tone surveillance	35
	8.5.2		Ground fault surveillance	35
9.	19"-case and 19“-rack shelf system installation			38
10.	Ground lift switch CIRCUIT ATO CHASSIS SWITCH			38
11.	Fuses			38
	11.1 Fuses in the DPA			38
	11.2 Fuses in the DPA			38
12.	Power amplifier specifications			42
	12.1 DPA 4120 power amplifier 200 W			42
	12.2 DPA 4140 power amplifier 400 W			43
13.	Extension specifications			44
	13.1 NRS 90225 general input module			44
	13.2 NRS 90222 remote module			44
	13.3	NRS 90208 input transformer for floating, balanced input		44
	13.4	NRS 90227 output transformer for floating, balanced monitor output		44
	13.5	NRS 90224 pilot tone and ground fault surveillance		44
14.	Block diagrams			67
	14.1 Power amplifiers DPA 4120 / DPA 4140			67
	14.2 NRS 90225 general input module			68
	14.3 NRS 90222 remote module			69
	14.4	NRS 90224 pilot tone and ground fault surveillance		70
15.	Warranty			72

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