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4.8.9 External triggering in a single run
M O D E e x t e r n a l
t r i g g e r r e c o r d S
Logging is started in the usual way by pressing
set
in the LOG function
(see 3.5.). The logger only records when the external trigger is present.
Readings will be taken from each of the channels selected (in whichever
logging mode has been selected - see 4.8.1). However, a new run is not
started when the external trigger is re-applied and therefore a complete
record of all externally triggered readings will be recorded in only one run.
This will be of value if you need to analyse these triggered events on one
time axis. The time channel is selected automatically to log the time
between recordings.
Whenever the trigger is removed, a final dummy recording is made and
then recording stops. If no trigger is applied during any 18-hour period, a
‘dummy’ or ‘confidence’ recording is made.
4.8.10 Wiring up for external triggering
All connections are made to the
‘signal’ connector (15-way male D).
Connect external trigger signal High to pin 14 (external trigger input) and
external trigger signal Low to pin 13 (common - Squirrel ground).
voltage
contacts
open
contacts
closed
high
low
time
run 1
run 2
