Chapter 3 Troubleshooting
83
Symptom
Cause of Problem
I downloaded
unexpected
data.
•
There may be up to 100 files stored in the
DaqPRO
. Performing a
Download
means loading
one of them in sequential order. You have probably
loaded an old file accidentally. Try using Selective
download from DaqLab (refer to page 31).
While running with an active trigger,
DaqPRO
does not complete the data
logging.
•
The trigger condition has not been fulfilled.
•
The trigger condition was fulfilled, but the time
period was too short (less than 300
μ
S).
I started a new session and the data
logger stopped recording immediately
afterwards.
•
First check if the sampling rate was so fast that the
recording began and ended in less than a second.
If this is not the reason, recharge the 7.2V battery
and try again.
DaqPRO
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.
•
Avoid working near strong electromagnetic fields.
(e.g. engines, fluorescent lights)
DaqPRO
’
s memory is empty
–
there are
no stored files or notes.
•
The internal 3V disk battery is dead.
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