(e) Input: Microphone: 0.4 mV minimum, 200 ohms.
Line: minus
20 to 16 dBm, 600 ohms unbalanced or balanced;
(f)
Output:
Balanced or unbalanced into 600 ohms.
f.
Four quadrant multiplexer: Unit shall digitally capture full
video from four unsynchronized sources and reduce these images to
quarter screen size and combine images to provide a real time
video output for display of the four inputs in four quadrants of a
single monitor.
(1)
Video performance requirements shall be as follows:
(a) Input level: One Vp-p nominal into 75 ohms from a 525 line,
60 fields per second source;
(b)
Output level:
One Vp-p nominal into 75 ohms;
(c)
Alarm inputs:
Four, rear panel mounted;
(d)
Alarm outputs:
Relay contacts, rear panel mounted;
(e)
Video inputs:
Four, looping;
(f)
Switching:
Five position, front panel mounted;
(g)
Memory:
512 by 512 pixels, minimum, digital; and
(h)
Gray scale:
64-level.
2.4.18
Alarm Reporting and Display
Display shall integrate signals from and provide control to IDS sensors.
Major components shall be as follows:
a.
Control units;
b.
Local annunciator unit; and
c.
Central alarm reporting and display unit.
2.4.18.1
Control Units
Unit shall provide for connection and control of the IDS sensors and shall
report status to the [local annunciator unit] [and] [central alarm
reporting and display unit]. Control unit enclosure shall be tamper
protected so that openings cannot be created to defeat the system.
a.
Each control unit shall provide the power and data interfaces to
and control of a group of up to [four] [eight] [12] [16] sensor
zones and shall perform the following functions:
(1) Continuously monitor status (secure or alarm) of sensor zone
status outputs connected to each control unit zone input by
[monitoring current through the end-of-line resistor]
[interrogating a communications device at the sensor zone].
(2) Continuously supervise lines connecting each sensor zone
status output to each control unit zone input.
SECTION 13703N
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