The sequencer switch is actuated by control signals
received from the programmer. Each control signal
from the programmer actuates a relay in the sequencer
switch, which applies 28-volt dc to the rotary switch.
As the rotary steps, a firing pulse is supplied directly
from the aircraft's 28-volt dc power supply. This firing
pulse is directed to the applicable impulse cartridge in
the dispenser assembly.
Dispensing starts with the selection of one or both
dispensers (right or left) from the cockpit and the
initiation of the dispensing switch. When only one
dispenser has been selected and is emptied, the
programmer
control
pulses
are
automatically
transferred to the second sequencer switch. When both
dispensers are selected by the cockpit control,
simultaneous signals are directed to both sequencer
switches. The sequencer switches are connected to the
dispenser housing by an electrical cable supplied as
part of the dispenser housing.
Dispensing Set Programmer
The dispensing set programmer (fig. 10-22)
provides electronic control of the dispensing modes.
The AN/ALE-39A programmer generates control
10-19
Figure 10-21.—Sequencer switch.
Figure 10-22.—Dispensing set programmer.
