Fourier MultiLab, User Manual

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126 Chapter 4 Troubleshooting
Symptom Cause of Problem
I started a new logging and the
data logger stopped immediately
afterwards.
• First check if the sampling rate was
so fast that the experiment began
and ended in less than a second. If
this is not the reason, recharge the
7.2V battery and try again.
MultiLogPRO monitors the battery
power during the logging. If the
battery voltage is less then 5V, the
logging is stopped automatically.
The recorded data is noisy
•
With voltage or current sensors,
use short connections between the
circuit being tested and the sensor.
In some cases it is advisable to
connect the (-) of the current
sensor to the ground terminal
•
Avoid working near strong
electromagnetic fields. (e.g.
engines, fluorescent lights)
I turned the calibration screw but
.did not obtain the accurate
calibration
• The calibration screw is of high-
resolution type and has 15 turns.
Try to continue turning the screw,
or change the direction of rotation.
I can
’
t see a video of the
experiment
•
The video window is closed. Click
Display video on the main toolbar
to open it.
•
The video is disabled, select
Enable video from the Video
menu.
•
The camera driver is not properly
installed.
I can ’ t record voice comments •
The microphone volume is muted.
Open Window ’ s volume contro l
and uncheck the Mute check box
at the bottom of the Mic volume
column.
MultiLogPRO ’ s memory is empty
– there are no stored files or
experiment notes.
The internal 3V disk battery is dead.