Network Card User Manual

Chapter 3 Hardware Overview

Analog Output

♦ AT-MIO-16E-1, AT-MIO-16E-2, AT-MIO-64E-3, AT-MIO-16E-10, and

AT-MIO-16DE-10

The AT E Series devices supply two channels of AO voltage at the I/O

connector. You can select the reference and range for the AO circuitry

through software. The reference can be either internal or external, whereas

the range can be either bipolar or unipolar.

♦ AT-MIO-16XE-50

The AT-MIO-16XE-50 supplies two channels of AO voltage at the I/O

connector. The range is fixed at bipolar ±10 V.

♦ AT-MIO-16XE-10

The AT-MIO-16XE-10 supplies two channels of AO voltage at the I/O

connector. The range is software selectable between unipolar (0 to 10 V)

and bipolar (+

10 V).

Analog Output Reference Selection

♦ AT-MIO-16E-1, AT-MIO-16E-2, AT-MIO-64E-3, AT-MIO-16E-10, and

AT-MIO-16DE-10 only

You can connect each D/A converter (DAC) to the AT E Series device

internal reference of 10 V or to the external reference signal connected

to the external reference (EXTREF) pin on the I/O connector. This signal

applied to EXTREF should be between –10 and +10 V. You do not need to

configure both channels for the same mode.

Analog Output Polarity Selection

♦ AT-MIO-16E-1, AT-MIO-16E-2, AT-MIO-64E-3, AT-MIO-16E-10, and

AT-MIO-16DE-10 only

You can configure each AO channel for either unipolar or bipolar output.

A unipolar configuration has a range of 0 to V

ref

at the AO. A bipolar

configuration has a range of –V

ref

to +V

ref

at the AO. V

ref

is the voltage

reference used by the DACs in the AO circuitry and can be either the

+10 Vonboard reference or an externally supplied reference between

–10 and +10 V. You do not need to configure both channels for the same

range.