Configuring digital input parameters – Measurement Computing DAQLog User Guide User Manual

Page 23

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DAQLog Software User's Guide

Working with Settings Files and Folder Locations

23

o

BeforeStable

: Immediately changes state, and does not change state again until a specified period of

stability (

Debounce Time

) passes.

Use this mode when the input signal has groups of glitches, and you want each group to be counted as one.
This mode recognizes and count the first glitch within a group, but rejects the subsequent glitches within
the group if the debounce time is set accordingly. Set the debounce time to encompass one entire group of
glitches.

Debounce Time

: Select from 16 programmable debounce times in the range of 0.5 µs (500 ns) to 25.5 ms.

Phase A Edge

: Select the edge or polarity on the Phase A input.

Phase B Edge

: Select the edge or polarity on the Phase B input.

Phase A, Index inputs on devices that do not support encoders

LGR-5320 Series devices that do not support encoder counting, connect the phase A input to the CTRx screw
terminal, and the Index input to the Gatex screw terminal.

Set the counter input parameters on this dialog and click

Next>>

to open the

New Log Settings…Configuring

Digital Inputs…

dialog.

Configuring digital input parameters

The

New Log Settings…Configuring Digital Inputs…

dialog contains one grid of digital input parameters that

determine:

 the digital port to log
 the format of digital data when converted

These parameters are explained below.

Log

: Select the check box to log data from all connected digital inputs.

Name

: Double-click in the

Name

column to change the name of the digital port.. This name appears in the

column header for the channel's log data.

Format

: Select the number format used for converted digital data.

You can select the format before you convert the data.

o

Decimal

: Data is converted to a decimal number.

o

Hexadecimal

: Data is converted to a hexadecimal number.

o

Binary

: Data is converted to a binary value.

o

Bitwise

: Data is converted to a binary data, with each bit separated by a comma.

Configure the digital input parameters on this dialog and click

Next>>

to open the

New Log Settings…Configuring

Acquisition Startup, Timing and Duration…

dialog.

Configuring startup, timing, and duration parameters

The

New Log Settings… Configuring Acquisition Startup, Timing and Duration …

dialog contains parameters

that determine:

 the number of samples to acquire before and after a scan is triggered,
 the sample rate before and after a scan is triggered.
 the units used to measure the scan duration and scan rate
 whether the onboard clock is available at the PACER terminal
 the type of trigger used to start a logging session

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