Specifications

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.