Rev. 5
16/04/2009
This document substitutes previous versions.
Page 5 of 12
Zaehl Elektronik-Tontechnik • Odenthaler Str. 47 • D-51465 Bergisch Gladbach • Germany • [email protected] • www.zaehl.com
Distributor (National/International):
sono Studiotechnik GmbH • Haagerstraße 5 • D-81671 München • Tel. +49 89 419671-0 •
•
www.sono.de
ASD-8 Manual
3.
Connection
3.1.
Power Supply
3.1.1.
Plug the 4pole XLR connector which is mounted to the cable fixed to the power supply into one of the
4pole XLR connectors designated “POWER IN” on the rear panel of the ASD-8 unit.
3.1.2.
Connect the power supply to a correctly earthed mains power socket. You may connect the power
supply to 100-240VAC at 47-63Hz mains voltage without the need of selecting a voltage range.
Important Note:
Always connect the power supply in the order described above. Otherwise there is a
risk of damaging the power supply and/or the unit.
3.1.3.
ASD-8 units provide two power inputs. You may connect two power supplies at the same time in order
to ensure a fail-safe operation. If power at one of the inputs fails, the other one will take over.
3.1.4.
12V-24V regulated DC is allowed at the power inputs. We deliver power supplies within this voltage
range. You can connect power supplies with differing voltages at the same time. The one with the
higher voltage supplies the unit. If it fails, the one with the lower voltage will take over.
3.1.5.
A green LED display, marked POWER, in the centre area of the front panel lights up when the unit is
powered.
3.2.
Audio
Note:
A complete register of technical data, connector-pinout and -functions can be found in chapters 6
and 7 of this manual.
3.2.1.
Inputs
Inputs are transformer balanced, suitable for levels up to +22 dBu.
Pinout of the XLR connectors:
wire function
XLR input ASD-8
/ a / hot
Pin 2
signal - / b / cold
Pin 3
ground / c / shield
Pin 1
In case you need to connect an unbalanced source to an input, follow the table below:
unbalanced source
XLR input ASD-8
signal Pin
2
ground Pin
3
ground
Pin 1, connection optional, check in the field if convenient
For connecting equipment with RCA/phono connectors the use of adapters may be convenient,
e.g. Neutrik Type NA2MPMF (3-pole XLR male – RCA/phono socket).
Neutrik produces similar adapters for XLR-Jack and XLR-BNC conversion (
www.neutrik.com
).
Important Note:
Connecting DC exceeding 1V is not allowed and can lead to damages inside the unit.
