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APPENDICES
Glossary
Following is a list of abbreviations and terms used in this manual. For a list of symbols and abbreviations used on
the 6530 display, refer to S
ection 2.3.2 – Display Guide.
Active Power
............... The sum of the instantaneous volts input multiplied by the instantaneous amps input = true
power = watts.
Apparent Power
......... The product of volts root mean square and amps root mean square.
DSP
.............................. Digital Signal Processing
EXT. SYNC.
............... External Synchronization. Using an external source to synchronize the measurements in
cycle-by-cycle mode.
GPIB
........................... General Purpose Interface Bus. IEEE-488 Instrument Bus Standard.
IEEE
............................ Institute of Electrical and Electronics Engineers. Organization best known for developing
standards for the computer and electronics industry.
Inrush (
↑
)
................... The initial current that is drawn when an electronic device is turned on. The inrush current
can be substantially higher in magnitude than when the circuit is at its steady state.
MOV
............................ Metal Oxide Varistor – transient suppressor, needed when inductive loads are used.
PA
................................ Power Analyzer
PC
................................ Personal Computer
PF
................................ Power Factor = COSØ = True Power/(V
rms
x I
rms
)
RMS
............................ Root Mean Square
RS-232
......................... Recommended Standard-232C, a standard interface approved by the Electronic Industries
Association (EIA) for connecting serial devices.
Summation
................. Mathematical sum of all currents entering the unit.
True Power
................. The sum of the instantaneous volts input multiplied by the instantaneous amps input =
active power = watts.
VA
................................ Volt Amperes
W
................................. Watts = Vrms x Irms x COSØ = True Power = Active Power, where Ø is the phase angle
between V and I.