Chapter 3 Working with MultiLab
53
1. Open the file (see page 54)
2. Display the data on the graph (see page 64).
3. Click
Replay
4.Video and audio Properties
To set the video properties click
Video
on the menu bar, then click
Video properties
to open the video properties dialog box:
Figure 12: Video properties dialog box
1. Changing Video Quality
The video default quality is
Normal
, click another option to select either higher quality
(12KBps) or lower quality (3KBps).Changing the video quality not only affects the
image quality, but the recorded file space and the computer
’
s performance as well. A
higher video quality means more disk space is used, which can slow down the
computer
’
s performance.
2. Audio Visual Options
The default option is
Audio_video
. That means that both video and audio are
enabled and you can record voice comments along with the video. If you plan to
record video only, select the
Video only
option. If you plan to record voice comments
only select the
Audio only
option.
3.3.4. Download
Data
Whenever data
is received from the TriLog, it is accumulated and displayed
automatically by MultiLab. There are two modes of communication: Online and Post-
Experiment.
Online communication
When TriLog is connected to the PC and programmed to run at sampling rates of up
to 100/s, TriLog transmits each data sample immediately, as it is recorded, to the PC.
The software thus displays the data in real-time in both the graph window and the
table window.
When TriLog is connected to the PC and programmed to run at a sampling rate of
500/s or 1000/s, TriLog transmits every twentieth or fortieth data sample online. This
means MultiLab displays data at a rate of 25/s, while the full data is accumulated in
TriLog
‘
s internal memory. Once the recording has ended, the full data is
automatically downloaded to the PC and displayed.
When TriLog is connected to the PC and programmed to run at a sampling rate of
11,200/s or 20,800/s, data is accumulated in TriLog
‘
s internal memory. This data is
