Chapter 4 — Setup
17
Alarm Input Polarity
The
ALARM INPUT POLARITY
option allows you to set the
polarity of all alarm inputs. It toggles as follows:
ACT LOW
— Active alarm inputs are “low.” The Simplex
recognizes a contact closure or TTL/CMOS logic low as
an alarm event.
ACT HI
— Active alarm inputs are “high.” The Simplex
recognizes a contact opening or TTL/CMOS logic high as
an alarm event.
The default
ALARM INPUT POLARITY
setting is
ACT LOW
.
Alarm Output Polarity
The
ALARM OUTPUT POLARITY
option allows you to set the
active polarity of the TTL/CMOS alarm output signals (pins
20–35
). These alarm output signals echo the alarm inputs (pins
1–16
). You can also control the polarity of the echo. This op-
tion toggles as follows:
ACT LOW —
Active alarm outputs are “low.” An alarm
input will be echoed as an active low.
ACT HI
— Active alarm outputs are “high.” An alarm in-
put will be echoed as an active high.
The default
ALARM OUTPUT POLARITY
setting is
ACT HI
.
Display Record Status
If
ON
, this message shows whether or not the Simplex is sending
images to be recorded. The status message displays the current
operating mode on the main monitor. It toggles as follows:
ON
— One of the following messages displays:
REC ALL
Multiplexed encoding of all cameras.
REC QUAD
With quad displayed, records the quad
image if
QUAD RECORD OPTION
is
ON
(four-camera models only).
REC OFF
Not recording cameras; message flashes.
1 CAM=XX
One camera recording of camera no.
XX
(
XX
stands for the camera number).
OFF
— No message shown.
The default
DISPLAY RECORD STATUS
setting is
ON
.