TM 10-1670-265-12&P
T.O. 13C7-1-21
CHAPTER 2
OPERATING INSTRUCTIONS
SECTION I.
DESCRIPTION AND USE OF OPERATOR'S CONTROLS AND INDICATORS
2-1. Altitude sensor parachute staging unit (ASPSU) controls.
TABLE 2-1. ALTITUDE SENSOR PARACHUTE STAGING UNIT CONTROLS.
Control or
Key
Indicator
Function
1
BAROMETER PRESSURE
Selector switch controls the ASPSU at the desired barometric
pressure setting. The slot-head switch turns to 10 settings of 0.1
inch increments (29.5 to 30.4 inch of mercury).
2
TEST CONNECTOR
Supplies AC power to the ASPSU for Non-Destructive Testing.
3
ADJUSTMENT SCREW
Adjusts altitude accuracy set point during adjustment procedure.
4
PRESSURE RELEASE
Allows barometric pressure buildup to escape.
PORT
5
FT x 100
Selector switch controls altitude sensor at the desired hundreds of
feet setting. The slotted-head switch turns to 10 settings of 100
feet increments (0 to 9).
6
FT x 1000
Selector switch controls altitude sensor at the desired thousands
of feet setting. The slotted-head switch turns to 10 settings of
1000 feet increments (0 to 9).
2-1
