Lindy Carbon Monoxide Alarm User Manual page 38

O
PERATION
4
O
PERATION
FEEDBACK INPUTS
4.9.5
To realise complex filter conditi-
ons, each filter has two feedback
inputs where filter events can be
further processed.
The special feature here is the
possibility of delay (delay time),
conditional evaluation (pass
condition) and hold time.
F 1 : Filter 1
F 2 : Feedback input of filter 2.
f 1 : F 1 output event, input event
of F 2
f 2 : Output of the feedback input
of F 2
With a pass condition = thru,
the effective hold time of f 2 can
be extended by any time by sub-
sequent events of f 1 (retriggering).
f 2 in this case is not released
until thold after the last falling
edge of f 1 .
[-] Previous Feedback Input
Selection pointer to previous input.
[+] N F I
EXT EEDBACK NPUT
Selection pointer to next input.
[F] F
ILTER
Origin of the feedback.
[D] D T
ELAY IME
Set the delay time after the
operation of the input event f 1 in s.
[H] H T
OLD IME
Set the hold time of f 2 after the
release of f 1 in s.
[P] P C
ASS ONDITION
Set the pass mode.
thru pass
conditional pass if input condi-
tion is still met
[E] E
FFECT
State how the input acts on
the OR element.
thru switched through
off switched off
invert switched through
in inverted fashion
[?] H
ELP
Explanation of the menu
items.
[Q] Q
UIT
Jump back to the previous
menu.
Rack