Gossen MetraWatt U1601, Operating Instructions Manual

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16 Gossen Metrawatt GmbH
Memory Duration as a Function of Number of Channels I
4.2 Synchronizing-Interval Data Logger
The energy values which have been measured during a given interval can be stored to a
data logger. This interval (duration: 10 s .. 999 hr., default: 15 minutes) is either derived
from system time, or the interval limit is determined with a trigger pulse slope (default:
channel 11). Energy measured during this interval (EINT) is entered into a list along with
the time and the date. The mean power value occurring within the interval (PINT) is
calculated based upon EINT and the duration of the corresponding interval.
Formatting the Data Logger
Attention!
!
The contents of the data logger are deleted during formatting.
The number of records in the data logger depends upon the number of channels. Thus
the data logger can be formatted in accordance with the desired number of channels.
Formatting can only be performed with an interpreter. Data area resolution is also
defined simultaneously (ECL command: FORMAT).
Defining the Number of Records
The format command reserves adequate space for the selected number of channels in
system memory. The greatest possible number of records is thus determined, but not
memory duration which is solely dependent upon the duration of the interval.
Example: Only channels 1 ... 4, channel 17 and channels 21 .. 23 are to be recorded to
the data logger.
If the format command is called up without parameters, status information is read out to
the data logger. Most importantly, the number of records which can be entered to the
data logger is shown here.
<A> FORMAT = 1...4 + 17 + 21 ... 23
<A> format
Format(0): 8 channels, 26214 records (= 273 days, with a 15 min. interval)
Channels: 1;2;3;4;17;21;22;23
Number of Channels Number of Records Memory Duration in Days
with a 15 minute interval
2 65535 682
8 26214 273
16 14563 151
24 10082 105
32 7710 80
40 6241 65
48 5242 54
56 4519 47
64 3971 41
<A> FORMAT=1..4+17+21..23