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11. Fast Logging (1000 series only)
Some loggers are provided with the capability to records at faster than
one second intervals. The following sections refer to these loggers only.
11.1 Logging Interval
In order for the Squirrel to operate in fast logging mode, only analogue
channels must be selected. No digital channels may be selected. The
logging mode must be set to
Interval
, the external trigger mode can be
unused
or set to
external trigger runs,
and the memory mode must be
stop when full
. If these conditions are met the Logging Interval function
will look something like this:
I N T l o g
0 0 : 0 0 : 0 0 . 1
The interval can be altered in the normal way. If
‘fast logging mode’ is not
required, then the tenths of a second should be set to zero. Interval values
up to 9.9 seconds can be set in fast logging mode. It is not possible to set
values greater than this if the tenths are not set to zero.
When logging in fast logging mode, no function other than
‘LOG’ can be
selected. This is true even if the interval is, for example, 8.4 seconds. (If
the interval were 8 seconds or 9 seconds, this restriction would not apply,
as the logger would behave as normal). When in fast logging mode, the
Squirrel can still be stopped and started in the normal way.
·
When using an external trigger to start fast recordings, the logger
must either be in the Log function or the display must be off.
·
When attempting to start fast logging using the delayed start option,
the logger must be left with the display off.
·
The minimum logging interval allowed depends on the number of
selected channels. Allow 0.1 second for every 8 channels.
·
Logging intervals of 2, 3, 4, 5, 6, 7, 8, 9 seconds operate as normal
logging.
·
Important: Unused channels must be de-selected when logging in the
fast mode. If left selected, the readings on the selected channels may
be slightly inaccurate.
11.2 Translation with Darca
The tenths of a seconds will not be included in the standard time column
as this is not compatible with most spreadsheets. When translating files
that have been recorded in fast mode, it is necessary to include the