2 rear panel – Nilfisk-ALTO DPA900/1500 User Manual

Page 6

6. Level Control for Channels 1&2

These two controls are used to adjust output level of channel 1 and channel 2 respectively.

7. UP/DOWN Key

This key is used to move inside the menus or to modify the parameter's value.

8. SELECT Key

This key is used to select the menu that you wish to edit.

9. ENTER Key

This key is used to edit or confirm the parameter's value.

11. Power Source Socket

It is used to connect power cord after setting the proper voltage, connect one end of power cord with the unit
and another end with mains.

12. Breaker

This switch functions as fuse for protecting the unit from damage. When the unit is overloaded or the
temperature inside the unit is too high, this pushing button will spring up and break the power supply. The
power supply will be recovered after pushing this switch down again.

13. Output Connector

These connectors have two kinds: Binding post and Speak-on connector. You can choose proper connectors

according to practical need. For your safety, please be careful when do connecting work.

14. Limiter Switch

Set this switch at "ON" position, once the output level is above maximum output level, the limiter begins,
thus keeping consistent output level for protecting apparatus. If the switch is set at "OFF", the limiter function
doesn't work.

3.2 Rear Panel

These connectors connect the input signal of channel 1 and channel 2 separately.

15. Balanced Input Connectors

These two output connectors are paralleled inside with the two input connectors. It enables the unit to work under

paralleled mode. Please also refer to wiring diagram for paralleled mode.

16. Parallel Output Connectors

17. Mode Selector

Total two optional modes: Up for Stereo mode; Down for Bridge mode.

- Stereo Mode

In this mode, channel 1 and channel 2 operate independently (just as traditional stereo amplifier). The signal

input into channel 1 can be output from channel 1 only, similarly, the signal input into channel 2 can be output

from channel 2 only.You can also operate the paralleled mode via outside wiring, so, the signal input from
channel 1 or 2 will be output from both channel 1 and 2 simultaneously. Details refer to the chapter 9.

- Bridge Mode

In this mode, the signal input into channel 1 will be output from the bridged end, on the other hand, the
output level control of channel 2 should be turned down to smallest.Details refer to the chapter 9.

The fan can accelerate the flow of air to lower the temperature inside unit.The inside temperature deter-

the fan speed which controls the inside air flowing speed.

mines

10. Fan

17 14

Apparaten skall anslutas
till jordat uttag nar den
ansluts till ett natverk

RS485 IN

RS485 OUT

RS232

SERIAL PORT

BREAKER

CH1

CH2

BRIDGE

MONO

OUTPUT2

OUTPUT1

POWER OUTPUTS

CH1

POS NEG

CH2

POS NEG

BRIDGE

POS NEG

CH2

POS NEG

MODE

BRIDGE

STEREO

LIMITER

OFF

PARALLEL

OUTPUT

PARALLEL

OUTPUT

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

CH1

CH2

SERIAL

MODEL