Larson Davis System 824, Technical Reference Manual

Page: 220 / 673

7-16 824 Reference Manual 9/29/09
NOTE: If set below 5 seconds, the output
will remain “ON” as long as the
conditions are true, and turn “OFF” x
seconds (0 to 5) after the condition; if set
to 6 seconds or greater, the output will
stay “ON” for at least 5 seconds but will
turn “OFF” as soon as the condition
becomes false or the condition has lasted
the number of set seconds (i.e. 0-5
minimum time, 6-255 maximum time).
Logic Output #2
Logic-Out #2 works the same as Logic Output and has the
same options as shown above.
NOTE: When Logic-Out #2 is not off
then the Heater Control setting has no
effect. It is overridden by Logic-Out #2.
Logic Output #2 Time Setting
The Logic Output #2 Time sets the number of seconds that
the output will remain turned “ON” following a triggering
event. See
Logic Output Time setting above.
Heater On
The Heater Control output selects the functionality of pin 8
of the control connector. It is an “open drain” output such
that when asserted, the Heater output sinks current to
ground; when unasserted no current flows. It has a
maximum rating of 40 volts.
The “ Heater On ” setting provides the following options:
No - Is unasserted; which is considered OFF (line
can be used as Logic output #2)
Yes - Is asserted; which is considered ON
E. A. Cal Tone
The E. A. Cal Tone setting is used to manually control the
Electrostatic Actuator (E. A.) of an outdoor microphone
system. It is a CMOS output that drives from 0 to +5 volts
through a 10,000 ohm current limiting resistor to pin 7 of the
control connector; +5 volts is the asserted state.