TM 10-1670-296-20&P 0002 00
Initiator Simulator. The initiator simulator is used during testing of the EPJS to simulate the squib. When
the EPJS components are connected and functioning properly, the initiator simulator will indicate if the
EPJS jettison circuits are functioning properly. The initiator simulator has two small capacity circuit
breakers that will operate (throw) from ON to OFF when 28 VDC is applied by setting the JETTISON
SWITCH on the control box to ON. The squib has two redundant firing circuits. The two circuit breakers
simulate these two redundant squib firing circuits.
Squib Tester. The squib tester is used to confirm that the squibs two redundant firing circuits are properly
wired and functioning. It allows the squib circuits to be tested without firing the squib. The squib contains
two standard AAA batteries and two LED lamps. These lamps provide a positive indication of open and
shorted squib firing circuits.