Inovonics JUSTIN 808, Инструкция по установке и эксплуатации

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HD1 programs back into sync. But this could take some time,
perhaps more than the 2-minute limit of the programmable
Time On (s):
interval.
You can prevent alarms for infrequent self-correcting instances
by setting the
Threshold On (smp):
to a higher number of sam-
ples. (10000 samples equate to a quarter of a second of time
misalignment). This number can be set much lower in systems
that prove themselves stable over time.
Keep in mind that delay offsets are automatically logged and
archived, and these can be analyzed for specific events or for
trends at your leisure.
ALARM TALLIES
The alarms just discussed are available as ‘tallies’ at the rear-
panel GPIO (General Purpose In/Out) port terminal block. The
GPOs (outputs) are simply identified 1 through 5, and must be
assigned their function and logic polarity through the
Setup /
General Purpose Output
menu, using either the Web interface or
in a very similar manner from the front-panel OLED menu
screen.
Polarity
GPOs are open-circuit in one condition and an NPN transistor
saturation to ground in the other. This means that these out-
puts are looking for an external positive voltage. A current-
limited +5V terminal is included on the block, although any
voltage up to +30VDC may be applied.
Click in the
Polarity:
callout area to switch output logic between
the two choices.
Active Ground
means that an alarm condition
will apply a ground to the output terminal;
Active Open
means
that the terminal is normally grounded and will go open for an
alarm.