19 | CIRCUIT ⊥ TO CHASSIS SWITCH | B locking screws INPUT MODULE |
20 | DC INPUT 24V = (battery) |
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21 | IDENT ADDRESS switch |
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22 | REMOTE CONTROL connectors |
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23 | STATUS indicator |
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A locking screws power supply printed board
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 | 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. | 38 | |||
10. | Ground lift switch CIRCUIT ⊥ TO 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 |
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