PPA5xx/15xx user manual
7-13
7.5 DATALOG – datalog options
The PPA5xx/15xx can store and display measurements
recorded at regular intervals over a time period. Each data
record consists of the elapsed time and up to four data
values selected by ZOOM. The instrument can graph and
display all four sets of measurements simultaneously.
The actual interval between data points is governed by the
measurement speed and the datalog interval. The
PPA5xx/15xx stores the next available measurement
after the datalog interval has elapsed: the actual elapsed
time is attached to each datalog record, displayed with the
data on the table or each graph, and returned with each
record over the communications (RS232, USB, GPIB or
LAN).
The data values may be stored to an external memory
device (memory stick) as each value becomes available. In
this mode, the data may be viewed in real time, as it is
being acquired.
For high speed data acquisition, the datalog interval may
be set to zero so that each measurement is stored. The
measurement interval is controlled with the ‘speed’ option
in the ACQU menu. Using the ‘window’ option for speed
allows for greater control of the measurement interval. In
this mode, the display flashes ‘DATALOG RUNNING’ and
only shows the acquisition time. The minimum datalog
interval depends on the function but is typically 10ms.
Note that in all cases the measurement interval is
necessarily adjusted to be an integral number of cycles of
the measured waveform.
Press DATALOG to set up the datalog options. The datalog
is started with the START key and stopped with the STOP
key unless the store becomes full first. The zero reference
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