Atec KEMZ-801A User Manual
KEMZ 801a
100 Ω
21-52
50
100
100
all dimensions in mm
EM claMp for IEc/EN 61000-4-6
IEC 61000 -4-6 (EN 61000-4-6) denes three basic types of transducer used for the injection of test signals
into the equipment under test (EUT ). The basic requirement is to inject a known level of RF signal onto
the cable of the EUT at each test frequency and to determine whether the EUT continues to function
correctly. In order to do this, it is necessary to decouple the auxiliary equipment (AE) from the test signal.
If this is not achieved it is difcult to know whether any fault is due to a failure of the EUT or the AE.
Whilst the coupling/decoupling network (CDN) is one of the best ways to achieve this test and indeed it
is mandatory to use them under some circumstances, it is not always possible to use a CDN.
KEMZ 801A
The normative Annex A of IEC/EN 61000-4-6 gives additional information regarding the clamp injection.
The KEMZ 801A is similar to the described EM clamp in the standard and injects the disturbance signal
As specified in IEC/EN 61000-4-6
Very efficient coupling
Can be used on almost any cable
Ruggedly designed
through a combination of inductive and capacitive coupling. The use of a ferrite cores along the length
of the clamp also improves the common mode impedance of the test set-up and the reproducibility of
the test.
Optionally offered is the calibration kit CAL 801A which allows test level setting and correction factor
measurement.
CAL 801A calibration unit for
KEMZ 801A
Dimensions of the 150 Ω to 50 Ω
adapter (part of CAL 801A), side view
Technical specifications
Frequency range: 10 kHz to 1000 MHz
Nominal impedance: 50 Ω
Connector: N-type female
Maximum input level
0.01 to 100 MHz: 100 W for 15 min
100 to 230 MHz: 100 W for 3 min
230 to 1000 MHz: 50 W for 3 min
Maximum correction factor
0.15 to 400 MHz: 4 dB (50 Ω system),
13.5 dB (150 Ω system)
Maximum cable diameter: 20 mm
Dimension (LxWxH): 647 mm x 130 mm x 105 mm
Weight: approx. 7 kg
Technical specifications of CAL 801A
Dimensions: see drawing
Maximum length of the clamp: 670 mm
Connectors on the clamp side: 4 mm banana
RF connector: N-type female
Weight: approx. 640 g
AE-side EUT-side
KEMZ 801
CAL 801A adapter setGround plane
6 dB attenuator
Termination
150 kHz ... 230 MHz (1000 MHz)
EM-Koppelzange
KEMZ 801
EUT
Power meter
RF out
Amp in
< +10 dBm
Amp out
ch.1 < +27 dBm
ch.2 < +20 dBm
ch.3 < +20 dBm
Power meter
NSG 4070
Power
USB
Tuning
StSizeStSize StSize
Local
Back
Stop
Run
Hold
0
.
1
4
7 8
5
2
3
kHz
dBm
6
9
MHz
dBµV
Hz
V
Enter
Step
1
STO
FRQ
LVL
RCL
Step2Step
3
MOD
2nd
Help
RF
ON/OFF
Test generator e.g. Teseq NSG 4070
with built-in RF synthesizer,
brodband power amplifier and
power meter
100 Ω100 Ω50 Ω
KEMZ 801a
EM claMp for IEc/EN 61000-4-6
Power requirements in accordance with IEC/EN 61000-4-6
(6 dB attenuator, 0.5 dB cable loss, typical insertion loss of KEMZ 801A)
calibration level for 3 V EMF without modulation, 3 V EMF with AM 80%,
calibration level for 10 V EMF without modulation, 10 V EMF with AM 80%,
calibration level for 20 V EMF without modulation, 20 V EMF with AM 80%
calibration level for 30 V EMF without modulation, 30 V EMF with AM 80%
Max. for ward power on the 6 dB attenuator input
KEMZ 801A, view to the ferrite cores
1000
320
100
3.2
0.32
Forward power in W
0.1
32
10
1
60
55
50
45
40
35
30
25
Forward power in dBm
20
0.01 0 .1
1 10 100 1000
Frequency in MHz
0.1 5 80 230
Frequency range of IEC/EN 61000-4-6, frequency in MHz
Test set-up calibration according IEC/EN 61000-4-6 with EM clamp
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