Fourier MultiLogPRO User Manual page 135

Symptom
I started a new logging and the
data logger stopped immediately
afterwards.
The recorded data is noisy
I turned the calibration screw but
.did not obtain the accurate
calibration
I can't see a video of the
experiment
I can't record voice comments
MultiLogPRO's memory is empty
– there are no stored files or
experiment notes.
126 Chapter 4 Troubleshooting
Cause of Problem
•
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.
•
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)
•
The calibration screw is of high-
resolution type and has 15 turns.
Try to continue turning the screw,
or change the direction of rotation.
•
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.
•
The microphone volume is muted.
Open Window's volume control
and uncheck the Mute check box
at the bottom of the Mic volume
column.
The internal 3V disk battery is dead.