Z E S ZIMMER Electronic Systems GmbH Chapter 15
277
Catchword
Meaning
requested for the CE sign.
Channel
Hardware which acts as an interface between the test circuit
and the instrument, these are U, I and P channels (P=U*I).
Charge
The integration of the current over the time; this charge can
be stored for example in an accumulator the unit is Ah.
Class A, B, C, D
Different kinds of equipment under test for EN61000-3-2
tests are assigned to this test classes.
COM interfaces
Serial Interface, mostly 9 pole SUB-D socket or 25 pole
SUB-D socket.
Comma separated
Data format in which each value is separated by a ‘,’.
Command set
A couple of commands to remote control the instrument
Common mode rejection
Relation of the displayed value to a common floating signal
on all inputs of a measuring channel; a high common mode
rejection is necessary for high accuracy.
Condition instruction
Instruction which will only be executed if a condition has
been fulfilled.
Constant
Value which will not change over time.
Continuous measuring
Measuring without any gaps.
Core parameter measuring circuit
The core parameters, like hysteresis and magnetic flux, can
be determined through power measuring.
Correct current
Correct voltage measuring
You can only measure one of these parameters in the correct
way, because the impedance of the voltage / current channel
has an influence on the measuring channel. This is a
systematically measuring error, which can be corrected.
Coupling
This defines which parts of a signal are fed into the next
stage.
⇒
AC coupling.
Crest factor
Ratio of peak value to TRMS value; very important when
using analogue instruments.
Current clamp
Tool to measure currents; work like a removable
transformer.
Current transducer
Similar to current clamps, but placed unremovable in the
measurement circuit.
Cursor
Representation of the place on which the next text input will
follow; in graphics the cursor marks a special point of the
waveform.
Custom menu
Menu defined by the customer himself.
Cycle time
Time which defines a measuring cycle must be higher than
the period time of the basic wave.
D
Summary of Contents for LMG450
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