press key ENTER [5]. This will lead to a screen like the one shown below:
Figure 15.- Defining the starting time of measurement acquisition.
The first line of this screen tells you if the alarm function is on (ALARM On) or not (ALARM Off), followed by the date and time the alarm
has been set for, and the last line shows the current time and date.
Repeatedly pressing key SHIFT [31] cyclically activates the different fields in the following order: Hour, Minute, Second, Day, Month and
Alarm (alarm state). To alter any of these simply activate it, using keys
[6] and press key SHIFT [31] again. Once you have updated
all the alarm fields, press key ENTER [5] to validate them and exit the screen.
If before activating the alarm (ALARM On) no measurement matrix cell has yet been activated (see section '4.9.2.4.2 Selecting the
Measurements to be Taken'), the bottom of the screen will show the error message "NOT CELLS SEL." (No cells have been selected)
followed by "DL STOPPED" (Data Logger deactivated).
On reaching the time defined in the Start acquisition time field, the instrument will switch itself on (if it was switched off) or go to the
Data logger mode (if switched on) to automatically take the measurements and/or produce the print-out.
3.- MULTIPLE MEASUREMENTS: INTERVAL BETWEEN MEASUREMENTS
In the case of having to take multiple measurements at different times the Measure interval will have to be defined. This field specifies
the time interval between measurements/print-outs. To define it, from the Data logger configuration screen, repeatedly press key SHIFT [31]
until the section dealing with time in the Measure interval field has been activated, define the hours by using keys
[6], then press key
SHIFT [31] again to go to the minutes field and define these in the same way. Finally press key SHIFT [31] again to validate the defined time
interval.
You can make as many acquisitions as there are activated rows in the measurement matrix (if only one row has been activated, then only
one measurement will be taken).
In the case where the Data logger function has been programmed to take more than one measurement in the time domain, i.e. more than
one row has been activated and the acquisition interval is greater than four minutes, then every time an acquisition is made the instrument will
reprogram the alarm for the next measurement. Then it will switch itself on three minutes before the time defined in the Measure Interval field
in order to warm up and ensure the highest accuracy.
4.- ERASING MEASUREMENTS STORED IN THE DATA LOGGER AND AUTOMATIC DEACTIVATION OF ALL THE CELLS.
The configuration screen also allows you to erase all the measurements stored in the Data Logger function, as well as automatically
deactivating all the activated measurement configurations. To erase the stored measurements select the Clear field and press key ENTER
[5]. To deactivate the measurement configurations select the Unselect field and press key ENTER [5].
5.- EXITING THE CONFIGURATION SCREEN
To exit the Data logger function configuration screen press key ENTER [5].
ALARM Off
Hour
: 07
Day
: 01
Minute
: 00
Month
: 05
Second
: 00
Time
12:03:16
30/04/1999
126
TV & SAT Level Meter MTD 120
User Manual
