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Figure 6-3. Schematic diagram-monitor module, alarm.
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TM-5-6350-262-14-9 Monitor Module Status ID-1921( ) FSS-9(V) 6350-228-2661 Manual
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CHAPTER 7 DIRECT SUPPORT (INTERMEDIATE) MAINTENANCE INSTRUCTIONS - TM-5-6350-262-14-90025
TM 5-6350-262-14/9
NAVELEX 0967-466-9090
TO 31S9-4-32-1
the impedance detector. Consequently, its associated
6-4.
Access/Secure  Circuits  (Status  Module
oscillator will be enabled causing the lamp driver to
only). See figure 6-2.
flash the lamps and indicating the new condition.
a.
An access condition is represented by a
low impedance of 2K ohms or less and a secure
d.
When  the  RESET/ACK  switch  is
condition is represented by a high impedance of 1OOK
momentarily depressed to the ACK position, the latch
ohms or more.  When an access condition is being
corresponding to the input being received will not be
received, providing an acknowledgment has been made,
reset, but the remaining set/reset latch will be reset.
the ACCESS lamps will be on constantly and the
The resetting action of the remaining set/reset latch will
SECURE lamps will be off. The access set/reset latch
turn off its associated oscillator (output high) and its
will be set, keeping the access oscillator output low, and
lamp driver and lamps. It will also inhibit the oscillator
the SECURE set/reset latch will be set keeping the
corresponding to the condition being received so that
secure oscillator output high. With the access oscillator
the oscillator output will be low, keeping the lamp driver
output low, the access lamp driver and ACCESS lamps
and lamps for the received condition on constantly.
will be constantly on and the secure lamp driver and
Because one of the ACCESS/SECURE set/reset latches
SECURE lamps will be off.
is reset, the audible signal buss is disabled.
b.
When  a  secure  condition  is  being
6-5.
AC Power Circuit (Status Module only) See
received, providing an acknowledgment has been made,
the SECURE lamps will be on constantly and the
a.
When the ac power input status changes
ACCESS lamps will be off. The secure set/reset latch
from one state to the other, the AC POWER lamps will
will be set, keeping the secure oscillator output low, and
flash (four flashes per second) and the audible signal
the access set/reset latch will be set, keeping the access
buss  will  be  activated  until  the  condition  is
oscillator off (output high). With the secure oscillator
acknowledged. Any change of input status will produce
output low, the secure lamp driver and SECURE lamps
an output from the impedance detector, setting set/reset
will be constantly on and the access lamp driver and
the latch. Once the latch is set the oscillator will be on,
ACCESS lamps will be off.
causing the lamp driver to flash the AC POWER lamps.
c.
Whenever  the  access/secure  input
b.
If the RESET/ACK switch is momentarily
changes from one condition to the other, the indicator
depressed (ACK position), the set/reset latch will reset
lamps corresponding to the new condition will flash (four
and the oscillator will stop. If the impedance detector is
flashes per second), but the lamps corresponding to the
sensing a power off condition, its output state will cause
previous condition will remain constantly on. Because
the oscillator to be off (high output), turning off the lamp
both set/reset latches will be set, the audible signal buss
driver and AC POWER lamps. If a power on condition
will be activated. The set/reset latch corresponding to
is sensed, the output state of the impedance detector
the original condition was set previously and will be
will cause the oscillator output to be low, turning on the
unaffected by the change in input conditions.  The
lamp driver and lamps constantly.
associated oscillator output will remain low and its lamp
driver and lamps will remain on constantly.
The
set/reset latch corresponding to the new condition was
previously reset but will be set by the output change of
6-7

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