Logic Circuits (Alarm and Status Modules)

TM 5-6350-262-14/9

NAVELEX 0967-466-9090

TO 31S9-4-32-1

by the output amplifier for use outside the unit and the

6-3.

Logic Circuits (Alarm and Status Modules)

lamp driver is made to flash the alarm lamps.

See figures 6-1 and 6-2.

When the RESET/ACK switch is

An alarm condition is represented by a

momentarily depressed to ACK, the set/reset latch B is

high impedance of 100K ohms or more and a no-alarm

reset and disables the audible signal buss and stops the

condition by a low impedance of 2K ohms or less.

oscillator. The oscillator and output amplifier outputs

When an alarm condition is sensed by the impedance

are steady lows and the lamp driver and alarm lamps

detector, the output of the detector sets the two set/reset

are constantly on. This condition remains until the

latches to activate the audible signal buss and turns the

alarm condition no longer exists and a reset is made.

4 Hz oscillator on. The oscillator output is reproduced

Change 1 6-3