Ametek KEMA 801A, a recommended ferrite tube clamp for immunity tests per IEC/EN 61000-4-6, prevents signals from affecting other devices in the test setup. It features a simple clamp mechanism for easy insertion and improves the reproducibility of test results. This clamp is ideal for use between EUT and AE, excluding the cable under test, and has additional applications in preventing unwanted RF-currents in cables during emission measurements.
Ametek KEMA 801A, a recommended ferrite tube clamp for immunity tests per IEC/EN 61000-4-6, prevents signals from affecting other devices in the test setup. It features a simple clamp mechanism for easy insertion and improves the reproducibility of test results. This clamp is ideal for use between EUT and AE, excluding the cable under test, and has additional applications in preventing unwanted RF-currents in cables during emission measurements.
USER MANUAL
RF ATTENUATION CLAMP
KEMA 801A
3
85-238526 E02
CONTENT
1. Safety advice ........................................................................................................................ 5
1.1. General ...................................................................................................................................................... 5
1.2. Installation ................................................................................................................................................. 5
1.3. Applicable safety standards ..................................................................................................................... 5
2. Unpacking, storage and transport ....................................................................................... 6
2.1. General ...................................................................................................................................................... 6
2.2. Storage and transport .............................................................................................................................. 6
2.3. Unpacking ................................................................................................................................................. 6
2.4. Scope of delivery and order information ................................................................................................. 6
3. Application and standard requirements .............................................................................. 7
3.1. General ...................................................................................................................................................... 7
3.2. Test set-up example ................................................................................................................................. 7
4. Vericationoftheinsertionloss .......................................................................................... 8
5. Constructionoftheproduct................................................................................................. 9
6. Technicalspecication ....................................................................................................... 10
7. Maintenance ....................................................................................................................... 11
7.1. General .................................................................................................................................................... 11
7.2. Cleaning .................................................................................................................................................. 11
8. Disposal ............................................................................................................................... 11
4
KEMA 801A
5
85-238526 E02
The clamp can be part of a setup which works at dangerous voltages.
These operating instructions form an integral part of the equipment and must be available to the operating
personnel at all times. All the safety instructions and advice notes are to be observed. Neither Teseq GmbH
nor any of the subsidiary sales organizations or the manufacturer can accept any responsibility for personal,
material or consequential injury, loss or damage that results from improper use of the equipment and acces-
sories.
1. SAFETY ADVICE
1.1. General
■Use of the clamp is restricted to authorized and trained specialists
■In the fault case dangerously high voltage may be on the housing of the EUT.
■Safety against voltage flashover between cable under test and clamp is on the responsibility of the test
personnel. The use of sufficient isolation is strongly recommended.
■
Operate the equipment only in dry surroundings. Allow any condensation that occurs to evaporate before
putting the instrument into operation.
■Do not exceed the permissible ambient temperature, humidity or altitude.
■Only approved accessory items, connectors, adapters, etc. are to be used to ensure safe operation.
■
Do not place the product on surfaces that for reasons of weight or stability are unsuitable for this
purpose.
1.2. Installation
Never use the clamp if the isolation of cables is damaged or not used. Check the isolation on a regular basis
to ensure that it is in proper operating condition.
The clamp is not protected against any over load. Avoid any over load with adequate arrangements.
1.3. Applicable safety standards
Development and manufacture of the instrument complies with ISO 9001. The product conforms with the
requirements of the Low Voltage Directive (LVD) 2014/35/EU based on DIN EN 61010-1:2011.
WARNING: Improperorcarelesshandlingcanbefatal!
Useoftheclampisrestrictedtoauthorizedandtrainedspecialists
6
KEMA 801A
2. UNPACKING, STORAGE AND TRANSPORT
2.1. General
Save all packing materials! They will be needed in order to safely package the equipment for calibration service
or repair
Packaging materials
■Carton: Cardboard
■Padding: CFC-free polystyrene foam
■Plastic bags: Polyethylene
■Avoid the risk of condensation occurring! If a large temperature difference has been experienced, allow
time for the temperature to stabilize. This may take several hours.
2.2. Storage and transport
■Do not stack, either packed or unpacked.
■Do not up-end, arrows on the packaging must always point upwards.
■Protect from dampness, heat, cold and rain
■Do not throw
■Do not sit or stand on the instrument and packaging.
2.3. Unpacking
■Is the packaging damaged? If YES ☎ transportation company
■Are all the packages present and correct? If NO ☎ transportation company
■Open the packaging, remove the accessories.
■Grip the instrument at the sides and lift it from the packaging.
■Are the instrument or accessories damaged? If YES ☎ transportation company
■Are the contents of the package complete? If NO ☎ sales outlet
■Keep the instruction manual with the instrument.
■Keep the packaging.
2.4. Scope of delivery and order information
Part number Description
238526 KEMA 801A
Attenuation Clamp, conform with IEC / EN 61000-4-6
97-235501 KEMA 801-TC
Traceable calibration (ISO17025), order only with KEMA
7
85-238526 E02
3. APPLICATION AND STANDARD REQUIREMENTS
3.1. General
The KEMA 801A is recommended as an additional decoupling network (ferrite tube clamp) for immunity test
according to IEC / EN 61000-4-6 when using the clamp injection method. It shall be inserted on all the cables
between EUT and AE except the cable under test. The KEMA 801A prevents, that the test signal applied to the
EUT affects other devices, equipment or systems, which are not under test and improves the reproducibility
of the test results.
The clamp mechanism of the KEMA 801A makes possible a simple insertion in the test setup.
Other application: Prevention of unwanted RF- currents at cables during emission measurements.
3.2. Test set-up example
The following gure shows a test set-up example for testing in accordance with IEC 61000-4-6 (EN 61000-4-
6).
Figure 1: Testset-upwithEUTaccordingIEC/EN61000-4-6withEMclamp(KEMZ801),RF
attenuationclamp(KEMA801A)andmonitoringprobe(MD4070)
AE-side EUT-side
KEMZ 801
Insulating Ground plane
6 dB attenuator
Auxiliary
equipment
150 kHz ... 230 MHz (1000 MHz)
EM-Koppelzange
KEMZ 801
EUT
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
23
kHz
dBm
6
9MHz
dBµV
Hz
V
Enter
Step
1
STO
FRQ LVL
RCL
Step
2
Step
3
MOD
2nd
Help
RF
ON/OFF
EUT
AE 1
Equipment
under test
KEMA 801A
Ground plane
150 kHz ... 1000 MHz
RF Attenuation Clamp
KEMA 801
MD 4070
Power meter
Insulating
AE 2
Insulating
Test generator e.g. Teseq NSG 4070
with built-in RF synthesizer,
broadband power amplifier and
power meter
8
KEMA 801A
4. VERIFICATION OF THE INSERTION LOSS
The insertion loss is measured in a 50 Ω system with CAL KEMZ, 10 dB attenuators, network analyzer and
cables. In a rst step the measuring set-up is normalized with two connected impedance measurement adapt-
ers and 10 dB attenuators as shown in the gure below. The RF matching is improved by the 10 dB attenuators.
Figure 2: Normalizationset-up
The insertion loss measurement is performed with the clamp clipped on a 4 mm tube which is connected to
impedance measurement adapters. The clamp is positioned in the centre between both impedance measuring
adapters. Place the 4 mm tube in the centre of the ferrite cores. The measuring set-up is shown in the gure
below.
Figure 3: Set-upformeasuringtheinsertionloss
2x 10 dB attenuator
RF OUT 50 Ω RF IN 50 Ω
NETWORK ANALYZER
USB
USB
Power
Tuning
Back 0.
1
4
7 8
5
23
kHz
dBm
6
9MHz
dBµV
Hz
V
Enter
StSizeStSize StSize
Step
1
Step
2
Step
3
DIA
MEAS FOR
DIS
SCL
TRA
STO
FRQ LVL
RCL
MOD
MOD
STO
CH 1 CH 2
RCL
STO
FRQ LVL
RCL
MOD
MOD
Stop
Run Hold
STO
FRQ LVL
RCL
MOD
MOD
Local
2nd
Help
RF
ON/OFF
Ground plane
SAR M116
2x Impedance
measuring adapter
Reference ground plane
4 mm tube
10 dB attenuator
RF OUT 50 Ω RF IN 50 Ω
NETWORK ANALYZER
USB
USB
Power
Tuning
Back 0.
1
4
7 8
5
23
kHz
dBm
6
9MHz
dBµV
Hz
V
Enter
StSizeStSize StSize
Step
1
Step
2
Step
3
DIA
MEAS FOR
DIS
SCL
TRA
STO
FRQ LVL
RCL
MOD
MOD
STO
CH 1 CH 2
RCL
STO
FRQ LVL
RCL
MOD
MOD
Stop
Run Hold
STO
FRQ LVL
RCL
MOD
MOD
Local
2nd
Help
RF
ON/OFF
KEMA 801A
150 kHz ... 1000 MHz
RF ATTENUATION CLAMP
KEMA 801A
10 dB attenuator Impedance
measuring adapter
Impedance
measuring adapter
9
85-238526 E02
5. CONSTRUCTION OF THE PRODUCT
Figure 4: ViewtotheopenedKEMA801A
Ferrite cores, spring-loaded
Mechanicalinterlock(adjustable)
Figure 5: Side view
10
KEMA 801A
6. TECHNICAL SPECIFICATION
Frequency range: 150 kHz to 1000 MHz
Insertion loss: see graph
Maximum cable diameter: 20 mm
Dimension (LxWxH): 670 mm x 100 mm x 79 mm
Weight: approx. 5.5 kg
Environmental classication: Indoor use only
Operating temperature: +5°C to +40 °C
Relative humidity: up to 80%
Typicalinsertionlossin50Ωsystem
0.0
-10
-20
-40
-30
-60
-50
0.1 110 100 1000
FrequencyinMHz
Insertion loss in dB
Insertion Loss [dB]
Frequency [MHz]
KEMA 801
KEMA 801A
60
50
40
30
20
10
0
0,1 1,0 10,0 100,0 1000,0
Insertion Loss [dB]
11
85-238526 E02
7. MAINTENANCE
7.1. General
The KEMA 801A needs no special maintenance. The maintenance is limited to the cleaning of the ferrite
contacts.
No modications are to be carried out on the KEMA 801A and accessories by the user.
7. 2. Cleaning
The cleaning shall be done with dry cloth. If a wed cleaning would become necessary, make sure that no
humidity gets inside the unit and clean the instrument housing with a damp cloth using a little mild, nonabrasive
household cleanser if necessary.
Chemicals must not be used for cleaning purposes.
8. DISPOSAL
The unit is constructed that it can be dismantles right down to the component level.
12
To nd your local partner within
Teseq’s global network, please go to
www.teseq.com
© April 2016 Teseq®
Specications subject to change without notice.
All trademarks recognized.
Teseq® is an ISO-registered company. Its products
are designed and manufactured under the strict
quality requirement of the ISO 9001.
This document has been carefully checked.
However, Teseq® does not assume any liability for
errors or inaccuracies.
Manufacturer
Teseq GmbH
12623 Berlin, Germany
Landsberger Str. 255
T + 49 30 5659 8835
F + 49 30 5659 8834
deinfo.[email protected]
www.teseq.com
China
AMETEK Commercial Enterprise (Shanghai)
Co., Ltd. Beijing Branch)
T +8610 8526 2111
F +8610 8526 2141
chinasales@teseq.com
Germany
Teseq GmbH
T + 49 30 5659 8835
F + 49 30 5659 8834
deinfo.[email protected]
Singapore
AMETEK Singapore Pte Ltd
T +65 6484 2388
F +65 6481 6588
singaporesales.ct[email protected]
Taiwan
Teseq Ltd.
T +886 2 2917 8080
F + 886 2 2917 2626
taiwansales.cts@ametek.com
USA
AMETEK Compliance Test Solutions
T + 1 732 417 0501
F + 1 732 417 0511
Toll free +1 888 417 0501
usasales.ct[email protected]
France
AMETEK SAS
T + 33 1 30 68 89 00
F + 33 1 30 68 89 99
info.france@ametek.com
Japan
AMETEK Co., Ltd. Nagoya Ofce
T + 81 52 709 5501
F + 81 52 709 5502
ct[email protected].jp
Switzerland
Teseq AG
T + 41 32 681 40 50
F + 41 32 681 40 48
chsales.[email protected]
UK
Teseq Ltd.
T + 44 845 074 0660
F + 44 845 074 0656
uksales@teseq.com
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Ametek KEMA 801A, a recommended ferrite tube clamp for immunity tests per IEC/EN 61000-4-6, prevents signals from affecting other devices in the test setup. It features a simple clamp mechanism for easy insertion and improves the reproducibility of test results. This clamp is ideal for use between EUT and AE, excluding the cable under test, and has additional applications in preventing unwanted RF-currents in cables during emission measurements.
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