Copyright PSC
2000781K MkII MLB Operating Procedure
Page 4 of 68
1.
Acronyms and Abbreviations
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A (or Amps)
– Ampere (SI unit of electric current)
•
AR
– As required
•
Atm
– Standard atmospheric pressure (unit of pressure)
•
AWG
– American wire gauge
•
C
– Celsius (unit of temperature)
•
CG
– Center of gravity
•
Ch
– Channel
•
CMM
– Coordinate measuring machine
•
DB-9
– Common name for a specific electrical connector (used interchangeably with official size DE-9)
•
div
– Division (scale on oscilloscope)
•
Doc
– Document (referring to a PSC internal document number)
•
DOF
– Degrees of freedom
•
DMM
– Digital multimeter
•
ESD
– Electrostatic discharge
•
FLH
– Flathead (type of screw head, conical shape)
•
I
– Current (measured in Amps)
•
IAW
– In accordance with
•
in
– Inch (unit of length)
•
lb
– Pound force (unit of force)
•
LCT
– Lightband Compression Tool
•
LV
– Launch vehicle
•
MBA
– Motor Bracket Assembly (a subassembly of the MLB)
•
Mk II
– Mark II, a model designation of the Motorized Lightband
•
MLB
– Motorized Lightband (used interchangeably with Lightband)
•
mtr
– Motor
•
NC
– Normally closed (the switch terminal that permits current flow when the switch is in its free state/not
activated)
•
NO
– Normally open (the switch terminal that permits current flow when the switch is
depressed/activated)
•
NTP
– Normal temperature and pressure (20°C and 1 Atm)
•
OD
– Outer diameter
•
Ohm
(Ω) – SI unit of resistance
•
PS
– Power supply or power source
•
PSC
– Planetary Systems Corporation
•
QA
– Quality assurance
•
R
– Resistance (measured in Ohms)
•
Rev
– Revision
•
s
– Second (SI unit of time)
•
SFF
– Set-For-Flight, a Lightband specific operation
•
SHC
– Socket head cap (type of screw head)
•
SI
– International System of Units
•
SN
– Serial number
•
SV
– Space vehicle
•
TVAC
– Thermal vacuum (an environmental test)
•
typ.
– Typically
•
V
– Volt (SI unit of electric voltage)
•
V
DC
– Voltage direct current (measured in volts)
•
W
– Watt (SI unit of power)
