AMETEK MXCTSH Administrator Manual - Manual (Page 15)

MX Compliance Test System System Administrator Manual
Field Description
Tolerances
V distortion Margin Determines the tolerance band for the V distortion (in percent above the 100
% limit). The CTSMXH/L software will display Marginal instead of OK for the V
distortion if the distortion is between 100 % and 100 + this setting of the
allowable limit. This value is normally set to 10%. A marginal VTHD is shown
as V??? in the VTHD field.
Frequency variation The tolerance for the detected AC Source voltage frequency. If a California
Instruments AC source is used, the frequency will be within 0.01 Hz. However,
if the AC line is used instead, frequency variations may exceed the set
tolerance in this field. If an unacceptable line frequency is detected, an error
message will be issued to the operator.
Voltage variation The tolerance for the detected AC Source RMS voltage. If a California
Instruments AC source is used, the RMS voltage will be well within this
tolerance. However, if the AC line is used instead, voltage variations may
exceed the set tolerance in this field. If an unacceptable line voltage is
detected, an error message will be issued to the operator.
Class A/D Envelope limit
(CTSMXL only) The amount of current waveform that is allowed to be outside the Class D
current template. This template is used to determine Class A or D EUT's.
Presently, this value is fixed by the EN 61000-3-2 Harmonics standard at 5 %.
Noise Margin The noise floor for voltage and current measurements. If the measured input
signal is below this threshold, a warning is issues to the operator as the
signals are too weak to be measured accurately. This is normally due to
improper connection or a failure to apply the test voltage when manual source
control has been selected.
Absolute lower current
harmonic The absolute threshold below which current harmonics are ignored per the EN
61000-3-2 and -3-12 standard. Presently, this value is 5 mA (0.005 A).
Relative lower current
harmonic The relative (% of fundamental current) threshold below which current
harmonics are ignored per the EN 61000-3-2 and -3-12 standard.
Graph Display Modes
Fundamental display If 0, the fundamental is not graphed. If > 0, both fundamental and harmonics
are graphed. Default value is 0.
Harmonics Filtering If 0, transitory harmonics will be filtered using the 1.5 sec smoothing filter.
Default value is 0. If value > 0, filtering is disabled.
Class A/D Limits (CTSMXL only)
Min. Power for Class D This determines the lowest active power level of the EUT at which the product
is considered class D. If the power drops below this level, either no limits are
applied (EUT always passes) or class A limits are applied as the product
becomes class A. This is determined by the "min class D power will be class
A" setting. EN 61000-3-2 Standard calls out 75 W for this value.
Max. Power for Class D Maximum power below which a product is considered class D. Other criteria
are the special current wave shape for the 1998 standard or the product type
(PC, PC monitor or TV) for the 2000 standard. EN 61000-3-2 Standard calls
out 600 W for this value.
Min class D power will be
class A If set to 1, class A limits will be applied to the EUT if the power level falls below
the lower power limit and class D was selected by the user. If set to 0 (default),
no limits will be applied below the low power level and the EUT will always
pass. This field only applies when using the old EN 61000-3-2:1998 standard.
Initial pre-filter time (sec) This field is not used in the CTS SW and should be left at 0.
Revision B 15