Hardware Settings (DADS-1)

Configuration of certain I/Os and operating parameters can be changed by means of internal jumpers. Although default settings should satisfy most requirements, it is recommended to check that these settings are appropriate for user’s needs. Refer to image below for jumper locations.

Printed Circuit Board Layout and Jumper Locations

Analog Audio sampling rate

Default= 48 kHz

The analog input sampling rate can be set using jumpers JP18, JP19 and JP20 according to the following table:

SAMPLING RATE JP18 JP19 JP20
32 kHz 0 0 0
44.1 kHz 0 0 1
48 kHz 0 1 0
88.2 kHz 0 1 1
96 kHz 1 0 0
176.4 kHz 1 0 1
192 kHz 1 1 0
48 kHz 1 1 1

Jumper settings for the Analog Audio sampling rate

ANALOG IN configuration

Default position is: Differential

Left and Right channels of the ANALOG IN input can be configured as differential or singleended inputs. Differential inputs are obtained by setting JP7 and JP10 to position “DIFF” and single-ended inputs with jumpers set to position “SE”.

ANALOG IN impedance

Default position is: 10 kΩ

JP8 and JP11 are used to set input impedance (Zin) of the ANALOG IN channels to either 10kΩ or 600Ω. The impedance values are clearly indicated beside the jumpers.

ANALOG IN full-scale level

Default position is: +24dBu= 0dBFS

Full-scale levels of +24 or +20dBu are settable using jumpers JP12 to JP15. Level values are clearly indicated beside the jumpers.

Pull-up resistors on SOURCE SELECT inputs

Default position is: pull-up in

JP2, JP4 and JP6 are used to add an internal pull-up resistor on the Source Select inputs so that dry contacts can be used to prioritize the input source in automatic mode.

Ground for SOURCE SELECT inputs

Default position is: Internal

The ground for the SOURCE SELECT inputs can be set to internal or external using JP5. The external ground setting can provide complete ground isolation since the terminals are opto-coupled.

Power-fail AES bypass

Default position is: AES IN1

In case of power supply failure either one of the two AES inputs can be routed to the AES OUT connector. JP16 and JP17 are used to select AES IN1 or AES IN2 respectively.

Language

Default position is: English

JP9 is used to set the default language (English or French) for the LCD menu and the VT100 interface.

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