- Spectrum Brands, Inc. Computer Hardware User's Manual

Option Digital inputs

This option allows the user to acquire additional digital channels synchronous and phasestable along with the analog data.

Therefore the analog data is filled up with the digital bits up to 16 Bit data width. This leads to a possibility of acquiring 4 additional digital

bits per channel with 12 bit resolution boards.

Sample format

The following table shows the sample format of the standard mode with the digital inputs disabled and the sample format with activated

digital inputs.

To enable the recording of the digital inputs you simply have to set the according register shown in the table below.

Due to technical issues there is a board dependant fixed delay between the analog and digital samples. The

delay for your type of board can be found in the technical data section.

Bit Standard Mode Digital Inputs enabled

D15 ADx Bit 11 DIGx Bit 3

D14 ADx Bit 11 DIGx Bit 2

D13 ADx Bit 11 DIGx Bit 1

D12 ADx Bit 11 DIGx Bit 0

D11 ADx Bit 11(MSB) ADx Bit 11(MSB)

D10 ADx Bit 10 ADx Bit 10

D9 ADx Bit 9 ADx Bit 9

D8 ADx Bit 8 ADx Bit 8

D7 ADx Bit 7 ADx Bit 7

D6 ADx Bit 6 ADx Bit 6

D5 ADx Bit 5 ADx Bit 5

D4 ADx Bit 4 ADx Bit 4

D3 ADx Bit 3 ADx Bit 3

D2 ADx Bit 2 ADx Bit 2

D1 ADx Bit 1 ADx Bit 1

D0 ADx Bit 0 (LSB) ADx Bit 0 (LSB)

SPC_READDIGITAL 110100 read/write Enables the recording of the digital inputs. This is only possible if the option “digital inputs“ is

installed on the board.