Doc# E107706 GL- 7
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Glossary
measured information and to insure that no
information is lost.
Optical Port: A port that facilitates infrared communication with
a meter. Using an ANSI C12.13 Type II magnetic
optical communications coupler and an RS232
cable from the coupler to a PC, the meter can be
programmed with Communicator EXT
TM
software.
Packet: A short fixed-length section of data that is
transmitted as a unit. Example: a serial string of
8-bit bytes.
Percent (%) THD: Percent Total Harmonic Distortion. (See THD.)
Protocol: A language that is spoken between two or more
devices connected on a network.
PT Ratio: Potential Transformer Ratio used to scale the
value of the voltage to the primary side of an
instrument transformer. Also referred to as VT
Ratio.
Pulse: The closing and opening of the circuit of a two-
wire pulse system or the alternate closing and
opening of one side and then the other of a three-
wire system (which is equal to two pulses).
Q Readings: Q is the quantity obtained by lagging the applied
voltage to a wattmeter by 60 degrees. Values are
displayed on the Uncompensated Power and Q
Readings screen.
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