Specifications

Comedi

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PCI230(+) PCI260(+)

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Subdevices 3 1

0 AI AI

1 AO

2 DIO

AI Subdevice:

The AI subdevice has 16 single-ended channels or 8 differential

channels.

The PCI230 and PCI260 cards have 12-bit resolution. The PCI230+ and

PCI260+ cards have 16-bit resolution.

For differential mode, use inputs 2N and 2N+1 for channel N (e.g. use

inputs 14 and 15 for channel 7). If the card is physically a PCI230

or PCI260 then it actually uses a "pseudo-differential" mode where the

inputs are sampled a few microseconds apart. The PCI230+ and PCI260+

use true differential sampling. Another difference is that if the

card is physically a PCI230 or PCI260, the inverting input is 2N,

whereas for a PCI230+ or PCI260+ the inverting input is 2N+1. So if a

PCI230 is physically replaced by a PCI230+ (or a PCI260 with a

PCI260+) and differential mode is used, the differential inputs need

to be physically swapped on the connector.

The following input ranges are supported:

0 => [-10, +10] V

1 => [-5, +5] V

2 => [-2.5, +2.5] V

3 => [-1.25, +1.25] V

4 => [0, 10] V

5 => [0, 5] V

6 => [0, 2.5] V

AI Commands:

+=========+==============+===========+============+==========+

+=========+==============+===========+============+==========+

| |--------------|-----------| | |

+---------+--------------+-----------+------------+----------+

Note 1: If AI command and AO command are used simultaneously, only

one may have scan_begin_src == TRIG_TIMER.

Note 2: For PCI230 and PCI230+, scan_begin_src == TRIG_EXT uses

DIO channel 16 (pin 49) which will need to be configured as

a digital input. For PCI260+, the EXTTRIG/EXTCONVCLK input

(pin 17) is used instead. For PCI230, scan_begin_src ==

TRIG_EXT is not supported. The trigger is a rising edge

on the input.

Note 3: For convert_src == TRIG_EXT, the EXTTRIG/EXTCONVCLK input

(pin 25 on PCI230(+), pin 17 on PCI260(+)) is used. The