Vernier DataMate Guidebook User Manual

Page 22

DataMate Guidebook

Data Collection Modes

For each Vernier sensor, DataMate loads a default experiment appropriate
for the sensor. The default data collection mode for all sensors is Time
Graph (collecting data points at a predetermined rate for the specific
sensor). To choose another mode, or change the time graph data collection
parameters, position the cursor using the arrow keys opposite

MODE

and

press

ENTER

to see the

SELECT MODE

screen.

In the

LOG DATA

mode, data are collected with auto-ID sensors using

Quick Setup. DataMate can then retrieve the data from the interface.
Follow the directions given by this screen. See Tutorial #5 for instructions
on using LabPro as a stand-alone device.

The

TIME GRAPH

option is used to set the sample interval and number of

data points for a timed data collection. It can also be used to set advanced
features such as live graph settings and triggering.

This screen appears when you choose

TIME GRAPH

from the

SELECT MODE

screen. The default time interval between samples depends on the sensor
you are using. Select

CHANGE TIME SETTINGS

to enter a new time interval

and/or number of samples.

NOTE: A time graph will be displayed live unless the sampling rate is either 0.1 seconds or
smaller or larger than 270 seconds, or you have chosen to not display a live graph (see below).
If you are using multiple sensors and they are identical, all of the data will be displayed live in
one graph. If they are not identical, only CH 1 will be displayed live.

If you select

ADVANCED

on the

TIME GRAPH SETTINGS

screen, the

ADVANCED TIME GRAPH SETTINGS

screen appears.

YMIN

and

YMAX

refer

to the “window” in which the collected data is graphed.

YMIN

refers to the

lower boundary of the graph, and

YMAX

refers to the upper boundary of the

graph. The

YMIN

and

YMAX

values shown on the screen are the default

range of the sensor in channel 1. (This will vary depending on the sensor being used. For
example, for the Stainless Steel Temperature Probe, the range is –40 to 140°C.)

Follow the steps below to change advanced time graph settings:

To change the window range to be graphed or turn off the live graph,
select

CHANGE GRAPH SETTINGS

A list of the connected sensors appears.

Press the number beside the sensor you want, or you can choose not to
display a live graph by selecting

NONE