TM 5-6350-264-14&P-10
NAVELEX EE 181-AA-OMI-110/E121 C-9412
T.O. 31S9-2FSS9-1-10
Table 2-1. Operator Controls and Indicators
Control or indicators
Function
Operating mode switch
Selects the Control Unit operating mode (ACCESS,
(key-operated, 3-position
TEST/RESET, SECURE).
rotary)
AC POWER (indication lamp)
Illuminated when ac power is applied to unit.
Audible signal device
Sounds when the operating mode switch is at TEST/
RESET and a duress, intrusion, or tamper alarm is
received at the Control Unit.
b. There is an adjustable alarm delay to allow
access if the CU is within the secure area. Enter
the area and insert key in mode switch lock.
Turn switch to TEST/RESET and then to
ACCESS before the end of the alarm delay or an
alarm will be initiated. To leave the secure area,
turn mode switch to TEST/ RESET or ACCESS
and then to SE-CURE. Remove key and leave
area be-fore the end of the alarm delay or an
alarm will be initiated.
c. After responding to an alarm, reset the CU, to a
no-alarm
condition.
To
reset
CU, turn mode switch to TEST/RESET, and then
to SECURE. Remove key and leave area before
the end of the alarm delay or an alarm will be
initiated.
2-3. EMERGENCY OPERATION. Operation with
incomplete surveillance coverage or faulty tamper circuit
should be held to a minimum. Extended periods of
operation on battery (stand-by) power should be avoided.
2-4. UNUSUAL OPERATING CONDITIONS. Loss of
synchronization between Data Transmitter and Data
Receiver may occur while operating during heavy
thunderstorms.
Section II. THEORY OF OPERATION
2-5. FUNCTIONAL DESCRIPTION. The Control Unit is
the central element of J-SIIDS. Its primary function is to
monitor continuously the status of the secure area. It
does this by processing signals from a duress alarm and
five, or fewer, intrusion detection sensors located in the
secure area. This status information is processed and
transmitted to peripheral monitoring equipment. The
Control
Unit also provides primary and emergency standby
power to its associated sensors; provides Secure,
Access, and Test/Reset modes of system operation
within the secure area; and maintains secure area
subsystem security by monitoring sensor and audible
alarm signal lines and antitamper control of its own
enclosure. See figure 2-2 for a simplified functional
block
diagram
of
the
Control
Unit
2-2
