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EMC
This instrument has been designed to meet the requirements of the EMC Directive 2004/108/EC.
Compliance was demonstrated by meeting the test limits of the following standards:
Emissions
EN61326-1 (2013) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use. Test limits used were:
a)
Radiated: Class B
b)
Conducted: Class B
c)
Harmonics: EN61000-3-2 (2006) Class A; the instrument is Class A by product category.
Immunity
EN61326-1 (2013) EMC product standard for Electrical Equipment for Measurement, Control and
Laboratory Use.
Test methods, limits and performance achieved are shown below (requirement shown in
brackets):
a)
EN61000-4-2 (2009) Electrostatic Discharge : 8kV air, 4kV contact, Performance A (B).
b)
EN61000-4-3 (2006) Electromagnetic Field:
3V/m, 80% AM at 1kHz, 80MHz – 1GHz: Performance B
(A) and 1.4GHz to 2GHz:
Performance A (A); 1V/m, 2.0GHz to 2.7GHz: Performance A (A).
c)
EN61000-4-11 (2004) Voltage Interrupt: ½ cycle and 1 cycle, 0%: Performance A (B);
25 cycles, 70% and 250 cycles, 0%: Performance B (C).
d)
EN61000-4-4 (2004) Fast Transient, 1kV peak (AC line), 0·5kV peak (signal connections),
Performance A (B).
e)
EN61000-4-5 (2006) Surge, 0·5kV (line to line), 1kV (line to ground), Performance A (B).
f)
EN61000-4-6 (2009) Conducted RF, 3V, 80% AM at 1kHz (AC line only; signal
connections <3m, therefore not tested), Performance B
(A).
Note:
If the generator is subjected to sufficiently large modulated RF fields (radiated or
conducted) some minor modulation of the output waveform may be visible at certain frequencies
up to about 100MHz. However, possible degradation will be small and infrequent and not
deemed to be a problem in practice. In all other respects the instrument will operate normally
(Performance A) in fields up to 3V/m.
According to EN61326-1 the definitions of performance criteria are:
Performance criterion A:
‘During test normal performance within the specification limits.’
Performance criterion B:
‘During test, temporary degradation, or loss of function or
performance which is self-recovering’.
Performance criterion C:
‘During test, temporary degradation, or loss of function or
performance which requires operator intervention or system reset occurs.’
Cautions
To ensure continued compliance with the EMC directive observe the following precautions:
a) Connect the generator to other equipment using only high quality, double
−
screened cables.
b) After opening the case for any reason ensure that all signal and ground connections are
remade correctly.
c) In the event of part replacement becoming necessary, only use components of an identical
type, see the Service Manual.
Telemeter Electronic GmbH | Joseph-Gaensler-Str. 10 | Phone +49 906 70693-0 | Fax +49 906 70693-50 | www.telemeter.info
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