e) Instrument in storage function.
In the last three cases the instrument switches off automatically 8 minutes after the low
battery warning and interrupts storage or transmission of data.
When it switches on again there are two possibilities:
1. If the battery is definitively low, even when the instrument switches on again LOU appears
on the display together with the battery symbol.
The PROG key (P1+ENTER) enables the activation of the unloading of stored data even when the
battery is low.
2. If the battery has had time to recover and when the instrument switches on its charge
seems, even just a little, higher than the minimum value, LOU appears on the display
without the battery symbol for a short period of time (about 4 seconds), after which the
instrument returns to normal operation; this is to remind the user that the instrument was
previously in storage function and that this procedure was interrupted by the low battery
warning.
5. Q function and RCD function
* The function RCD = “Record” allows you to record the maximum, mean and minimum values
and the integral sum of the input signals. It also allows the independent setting, for each of the
two inputs, of an alarm threshold of the integral threshold, for a determined measuring unit (for
example lux or W/m
2
) and/or an integration limit time.
The moment the Record function is started (with the
t
key), the instrument begins calculating
the summation
where u(t) is the value of the input A or B at the time t.
As soon as the summation reaches the value Q of the limit energy threshold set for the same
input, or the time exceeds the integration limit time, the Q led (or the Time led) for the input that
has exceeded its threshold begins to flash.
The procedure which allows setting of the two thresholds is given on the next page.
To disable one of the functions (for example Time of input A) it is sufficient to set the value con-
cerned at 0.
Once the Q and Time parameters have been set, the Record function may be started by means
of the RCD key (
t
): if the key is pressed and immediately released, the RCD begins without era-
sing the data already present in the memory and a beep is given; if the key is held down for two
seconds, a second beep is given, the previous data are erased and the RCD function is restar-
ted.
The RCD parameters and the integrals may be reset, without restarting the count, using the
s
key, holding it down. Remember that, if the values are not reset, the resulting new data will be
calculated / integrated on the basis of the current ones plus the previous one, even after a period
of time (for example data recorded during a session some days or months earlier).
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