Simple Logger
®
II Series
9
CHAPTER 2
PRODUCT FEATURES
2.1 Description
The Simple Logger
®
II Series include one and two channel recording
devices (model dependent) powered by alkaline batteries. For AC units,
line tracking is performed such that 64 samples over one line cycle are
taken. Frequency tracking is performed over the range of ±2Hz around
the nominal line frequency (50 or 60Hz). Harmonic measurements are
calculated from these 64 samples (harmonics are only available from the
Simple Logger II Control Panel within the DataView
®
software).
The Simple Logger
®
II records at a rate of up to eight times per second
(model dependent). Samples are taken at a user defined storage rate.
This means that the input(s) are ignored between measurement intervals.
Battery operation and compact size allows for installation in tight locations
without the need for external power. A series of front panel LEDs provide
a quick status of the logger’s state and memory usage.
The main advantage of the logger is its ability to perform a variety of
recording tasks with easy and intuitive setup from a computer using
DataView
®
software.
Analog information on the input is sampled and converted to a digital
value. This digital signal is processed and stored along with scale and
time information. An optically isolated Universal Serial Bus (USB) port
provides for the transfer of data from the instrument’s internal memory to
the computer for analysis.
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