Instruction Manual

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P38: Day and time set.
This is used to set the time and day of the PentaMetric internal clock. The “time” is set in as 24 hour
time. The “date” is just an integer from 0 to 999, and can be an arbitrary number which will increase
by 1 each day that elapses. (You could, if you wish, enter the “Julian” date, which is the number of
days from the beginning of the year, beginning with Jan 1 as “1”.) It is used to determine the length of
charge cycles when recording “efficiency logged data”, and it is also used as a “date” stamp when
periodic logged data is recorded. When such data is downloaded to the computer this date (and time)
number is attached to each recorded data. The computer uses its internal “date” and “time”, along with
this data to calculate the actual time that the data was recorded. This is why it is not important to
enter the actual date here for that data to receive the correct time/date on the downloaded data file.
However if this periodic data is examined by the “PentaMetric display unit”, then the date shown there
(as an integer) will be the numerical date from this register.
Bottom line: If you are only going to look at periodic logged data by downloading into a computer it is
not necessary to set this date, because the computer will determine the relation between the number
and the actual date. However to have meaningful dates when looking at the “periodic logged data” by
the PentaMetric display unit you should put in a meaningful date: for example put “1” for the first day of
the month in which you set the date/time--which you will need to remember. Subsequent days will
then be referenced back to this initial date. However it is important to put in an actual time of day if you
use the “periodic logged data”, particularly if only recording once/day. This is necessary to insure that
the data entered in program P39 (daily time of measurement) is to be meaningful.
If power is removed from the PentaMetric the exact time and date will be rendered inexact. If that
occurs it will lose from 0 to 3 hours when power is restored. So when power resumes the time (and
date if necessary) should be re enered. Should power go off to the meter at an unknown date and
time, this time can be determined to within 3 hours by looking at this number at the moment that power
is restored, assuming that you have recorded the initial date and time that was entered.
P39: Periodic logged data: measurement time.
This specifies the time (in 24 hour format) when one of the “periodic data” measurements is to be
taken. (Refer also to section 6.C.1, Periodic logged data.) If only one measurement per day is to be
taken, this will specify the daily time of measurement. If more than one per day is to be taken, this will
be one
of the times, and the other times during that day will be spaced equally in the day. For
example, if data is being collected two times per day, and this is set to 10:00, the two times when data
will be collected is 10:00 and 22:00. (10AM and 10PM)
P40: Periodic logged data: measurement times/day.
This is the number of times per day that the “periodic logged data” measurements are to be taken. It
can be set at 1, 2, 4, 6, 12, 24, 48 times per day. However if the computer interface is used, these plus
more options are possible, allowing measurements up to 1 per minute.
P41and P42: Periodic logged data: Select data.
P41 and P42 allow you to select what type of “Periodic logged data” data you wish to record. P41
allows the options to choose any combination of these: Amp Hr 1, Amp-Hr2 and Amp-Hr3. P42 allows
the options: Watt hour1, Watt hour2 and Max/min Temp. With the computer interface it is also
possible to select (filtered) “volts1” and/or (filtered) “Amps1”. See also Section 6.C.1, “Periodic
logged data”.
P43: Battery discharge profile logged data options:
For the “battery discharge profile logged data” these options allow you to:
a): Choose whether to record data every 5% or every 10% change of state of charge.
b) Read data from Battery 1, Battery 2 or both.
See also Section 6.C.2 Battery Discharge Profile Logged data.
P44: Backlight options
There are no options at this time. (Eventually “off”, “high 5 minutes” then off. high 5 minutes then low”)