On-Line Recordings; Off-Line Recordings; Storage Capacity - Intab PC-logger 3150 How To Use Manual

1.2

On-line Recordings

On-line measurements are performed with the PC-Logger 3150 connected to
the computer's RS-232 port. Measurements can in this mode be monitored in
real-timeon the computer's display. The user must however be aware of the
speed-limitations set by the computer: don't expect it to handle more than eight
channels five times a second. If you are the fortunate owner of a faster
computer with a fast disk-drive you can probably go faster.
The user him/herself has to determine the maximum speed on his/her particular
computer.
1.3

Off-line Recordings

Off-line recordings are possible with loggers equipped with (optional) data
memory.
Off-line measurements should be preceded by the transferral of measurement
parameters from the computer to the PC-Logger 3150.
These parameters contain, among others (see program manual), information
about measurement interval and what channels that are to be active. They are
effective until a new set of parameters are downloaded. The PC-Logger 3150
can, after downloading of the parameters, be disconnected from the computer
and started with the help of the keys next to the LCD (see section 1.5). After
all measurements are completed (see stop : section 4.2) the PC-Logger 3150 is
again connected to a computer for transferral of collected data (X-fer).
1.4

Storage Capacity

The number of measurements that can be stored by the PC-Logger 3150 and/or
computer is dependent on the size and type of memory used.
The longest possible duration of a recording is a function of the number of
channels that are active, sampling rate and the size of the storage medium.
A discussion of how the maximum length of a recording can be calculated
from known parameters follows below.
It is assumed that recordings are made using software supplied by INTAB.
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INTAB Interface-Teknik AB