National Instruments AT E Series

Chapter3 HardwareOverview

©NationalInstruments Corporation 3-15 ATE Series User Manual

the full-scale rangeof the s electedchannel, and the resolution is that

range dividedby 256 for the AT-MIO-16E-1, AT-MIO-16E-2,and

AT-MIO-64E-3,and divided by 4,096 for the AT-MIO-16XE-10and

AT-AI-16XE-10.

Note The PFI0/TRIG1 pin is a high-impedance input. Therefore, it is susceptible to

crosstalkfrom adjacent pins, which can result in false triggering when the pin is left

unconnected.To avoidfalse triggering, make sure this pin is connected to a low-impedance

signal source (less than 10 kΩsource impedance) if you plan to enable this input using

software.

Figure3-8. AnalogTrigger Block Diagram

There are fiveanalog triggering modes available, as shown in Figures 3-9

through 3-13.You can set lowValue and highValue independently in

software.

In below-low-levelanalog triggering mode, the trigger is generated when

the signal valueis l ess than lowValue.HighValue is unused.

Analog

Input

Channels

PFI0/TRIG1

PGIA

–

ADC

DAQ-STC

Analog

Trigger

Circuit

Mux