number of time data acquisition cycle has been carried out. Data
acquired and stored is automatically confirmed in memory.
3.13.2 Automatic power OFF procedure
During the timed data acquisition, once the configured data set has been acquired and stored, the power
OFF procedure is carried out by the probe to save battery energy. When this happens, the following
message appears:
Number of acquisitions left: 100
Next data acquisition on Fri March 31 15:49:45.6 2007
Shut-down procedure successfully completed.
3.13.3 Accidental power ON cycle
In case of accidental power ON cycle, while the probe is OFF waiting for the next acquisition time, the
probe wakes up and allows the operator to interrupt the timed acquisition cycle.
Timed data acquisition illegal acquisition time
Do you want to terminate the timed data acquisition ? (Y)es (N)o
In case no answer to the above probe request is received in 30s, the probe shuts down by itself and
configures the next timed acquisition time.
3.13.4 Magnetic power ON/OFF switch
The magnetic power ON/OFF switch can be used to temporarily interrupt the time sequence of the
timed data acquisition cycle. When the probe is switched ON again, it immediately starts a data
acquisition cycle and then continues with the measurement cycles using the configured time step. The
successive acquisition time is calculated by adding the configured interval to the last wake-up time until
it is greater than the wake-up time.
3.13.5 Step-by-step procedure
After establishing a valid connection with the probe using the "Verbose operating mode", proceed as
follows:
A) Preliminary configuration
1. Run the “ITERM” programme.
2. Switch ON the probe.
3. Using the ITERM Probe->Set Time setup the probe date and time
4. If the Main Menu does not appear, type <VT> followed by a <CTRL-J>. The Main Menu appears.
5. From the Main Menu, select the "Data Acquisition sub-menu" through the DATA command.
6. From the "Data sub-menu", select the "Timed Data acquisitions" by means of the DATD command.
7. The first question concerns the data acquisition interval or step.
8. The second question concerns the number of acquisition cycles to perform.
9. The third question concerns the number of data sets that must be acquired during each
acquisition cycle.
10. The fourth question concerns the data acquisition starting time.
11. Now the probe, depending on the previous configuration, acts according to one of the following
possibilities: i) it executes a data acquisition cycle, then switches OFF by itself and waits for the
next acquisition time. ii) it waits for the data acquisition starting time.
12. Switch OFF the probe.
B) Field operations
1. Once you have reached the sampling site, switch ON the probe by means of the magnetic switch;
the probe performs the first acquisition cycle and then configures the successive acquisition time
by itself.
2. When the probe is recovered and returns to the surface, you can switch it OFF by means of the
magnetic switch and the data acquisition is temporarily interrupted.
C) Ending the unattended data acquisitions
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