COM-power corporation CLEM-6146 User manual
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INSTRUCTION MANUAL
Rev050321
INSTRUCTION MANUAL
for
CLEM-6146
EM CLAMP
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INSTRUCTION MANUAL
- L I S T S O F F I G U R E S , T A B L E S & E Q U A T I O N S -
Rev050321
5.1.2.1 Decoupling Factor Calculation.................................................................................24
5.1.2.2 Input Impedance Calculation...................................................................................24
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INSTRUCTION MANUAL
S E C T I O N 1 - I N T R O D U C T I O N
Rev050321
This manual includes description of product features, typical electrical performance
parameters, product specifications, instructions for use, and step by step procedures for
calibration of test levels and performing testing. Also included are important safety
precautions, warranty, and maintenance information.
The test procedures and guidance provided herein is for general guidance and is correct
to the extent of our knowledge and understanding of the current, relevant IEC/EN
standards at the time that this manual was written. However, the information may become
dated or may be inappropriate for some applications.
The user is cautioned to always refer to the appropriate editions of the IEC 61000-4-6, the
applicable product family, product environment and/or product specific standard(s) to
ensure proper application of the test and adherence to the most appropriate rules,
procedures, practices, and/or relevant interpretations thereof for your particular
application.
Information contained in this manual is the property of Com-Power Corporation. It is issued
with the understanding that the material may not be reproduced or copied without the
express written permission of Com-Power.
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
WARNING –If shipping damage to the product or any of the accessories is
suspected, or if the package contents are not complete, contact Com-Power or
your Com-Power distributor.
Please check the contents of the shipment against the package inventory in
section 3.2 to ensure that you have received all applicable items.
STANDARD ITEMS:
✓
CLEM-6146 EM Clamp
✓
ADA-515-CLEM 150 ohm to 50 ohm Adapter Pair
✓
4 mm Copper Rod (length: 68 cm)
✓
Calibration Certificate and Data
OPTIONAL ITEMS:
✓
CLEMA-6146 Calibration Adapter Pair
✓
4 mm Copper Rod (length: 63 cm)
✓
DCx-xxxx-100W Directional Coupler
✓
ATTN-6-100W 6 dB Attenuator
✓
ATTN-30-100W 30 dB Attenuator
✓
TEP-050 50Ω Termination
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
The hazard symbols appearing on the product exterior are defined below.
The yellow triangle with an exclamation mark indicates the presence of
important operating and/or maintenance (servicing) instructions in the
literature accompanying the product.
The yellow triangle with a lightning bolt indicates an alert to the user that
uninsulated dangerous voltages are present within the product enclosure
and on output connectors. These voltages may be of sufficient
magnitude to constitute a risk of electric shock to persons.
The Ground symbol inside a circle indicates terminal which is intended for
connection to an external conductor for protection against electric
shock in case of a fault, or the terminal of a protective earth (ground)
electrode.
To indicate on the rating plate that the equipment is suitable for AC
current.
To indicate on the rating plate that the equipment is suitable for direct
current.
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
The following safety instructions have been included in compliance with
safety standard regulations. Please read them carefully.
•READ AND RETAIN INSTRUCTIONS - Read all safety and operating
instructions before operating the instrument. Retain all instructions for future
reference.
•HEED WARNINGS - Adhere to all warnings on the instrument and operating
instructions.
•FOLLOW INSTRUCTIONS - Follow all operating and use instructions.
•WATER AND MOISTURE - Do not use the instrument near water.
•VENTILATION - The instrument should be used/installed only in locations
where the flow of air through the ventilation openings is not impeded.
•HEAT - The instrument should be situated away from heat sources such as
heat registers or other instruments which produce heat.
•GROUNDING - Take precautions to ensure that the grounding of the
instrument is not defeated. It is designed to be used with the metallic
brackets secured to ground.
•CLEANING –Clean the instrument outside surfaces of the device with a
soft, lint-free cloth. If necessary, a mild detergent may be used.
•OBJECT AND LIQUID ENTRY - Take care that objects do not fall into the
instruments and that liquids are not spilled into the enclosure through
openings.
•DEFECTS AND ABNORMAL STRESS - Whenever it is likely that the normal
operation has been impaired, make the equipment inoperable and secure
it against further operation.
•SITTING OR CLIMBING - Do not sit or climb upon the instrument or use it as
a step or ladder.
•ENVIRONMENTAL CONDITIONS -This equipment is designed for indoor
use. Ambient temperature range during operation should be between 5°
C to 40° C.
•STORAGE AND PACKAGING - The device should only be stored at a
temperature between –25 and +70 °C. During extended periods of storage,
protect the device from dust accumulation. The original packaging should
be used if the device is transported or shipped again. If the original
packaging is no longer available, the device should be packed carefully
to prevent mechanical damage.
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
EUT Cable Opening
Cylindrical hole for EUT cable (during testing) and for 4 mm diameter copper rod (during calibration).
RF Input Port
Port for connection to RF signal source. Port is equipped with an N-type coaxial connector.
Heat Sinks
Metallic heat sinks for component cooling.
Rotary Latches
Please refer to section 4.2 for instructions on operating the three-position rotary latches.
Grounding Bracket
Brackets to be bonded to earth ground during calibration and/or testing.
Upper half of EM Clamp
Lower half of EM Clamp
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
4 mm Banana Plugs
These banana plug connectors allow for connection to the 4 mm banana jacks located on the respective
calibration adapters.
4 mm Banana Jacks
These banana jack connectors provide the receptacles for connection to the respective 4 mm diameter copper
rod.
Coaxial Port of Adapters
Each coaxial adapter is fitted with an N-type coaxial connector.
68 cm Copper Rod
4 mm diameter copper rod with 4 mm banana connectors at each end. Used with ADA-515-CLEM 150Ωto 50Ω
Adapters for measurement of coupling factor and calibration of test levels.
63 cm Copper Rod
4 mm diameter copper rod with 4 mm banana connectors at each end. Used with CLEMA-6146 Calibration
Adapters for measurement of impedance and decoupling factor.
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INSTRUCTION MANUAL
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Rev050321
CLEM 6146 EM Clamp
Frequency Range
150 kHz to 230 MHz
Extended Frequency Range
10 kHz to 1 GHz
Nominal Impedance
50Ω
Input Connector
Type-N
(female)
Clamp Opening Diameter
0.79” (20 mm)
Maximum Cable Diameter
0.75”
(19 mm)
Height of Center of Cable Opening
2.06”
(52.5 mm)
Distance from either end of Clamp to Ref. Point
0.87”
(22 mm)
Maximum Output Power into 6 dB Attenuator
10 kHz to 100 MHz
100 MHz to 230 MHz
230 MHz to 1 GHz
400 Watts for 15 minutes
400 Watts for 3 minutes
200 Watts for 3 minutes
Dimensions (L) x (W) x (H)
25.6” x 4.9” x 4.9”
(650.2 mm x 124.5 mm x 124.5 mm)
Weight
13 lbs. (5.9 kg)
All values are typical, unless specified.
All specifications are subject to change without notice.
ADA-515-CLEM and CLEMA-6146 Adapters
Frequency Range
150 kHz to 230 MHz
Nominal Impedance (ADA-515-CLEM only)
100Ω
Input Connector
4 mm Banana Jack
Output Connector
Type-N (female)
Minimum Height for 4 mm Rod Jack
0.9”
(23 mm)
Maximum Height for 4mm Rod Jack
2.2”
(56 mm)
Distance from either end of Clamp to Ref. Point
0.87”
(22 mm)
Power Rating (ADA-515-CLEM only)
2.5 Watts
(continuous)
ADA-515-CLEM Dimensions (L) x (W) x (H)
4” x 3.94” x 3.94”
(102.4 mm x 100 mm x 100 mm)
CLEMA-6146 Dimensions (L) x (W) x (H)
4.94” x 3.94” x 3.94”
(125.5 mm x 100 mm x 100 mm)
All values are typical, unless specified.
All specifications are subject to change without notice.
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INSTRUCTION MANUAL
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Rev050321
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
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INSTRUCTION MANUAL
S E C T I O N 3 -PRODU C T I N FORM A TION
Rev050321
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INSTRUCTION MANUAL
S E C T I O N 4 - P R O D U CT I NSTA L LATION
1 9 1 2 1 E l T o ro R d ● S i l v e ra d o , C a l i f o rn i a 9 2 6 7 6 ● ( 9 4 9 ) 4 5 9 - 9 6 00 ● c o m - p o w e r. c o m
Rev050321
The CLEM-6146 EM Clamp is designed specifically for immunity to conducted
disturbances testing as per IEC 61000-4-6.
When no CDN is available for the type of port to be tested, clamp injection may
be used (i.e.: EM Clamp or Bulk Current Injection Probe). The EM Clamp offers two
key advantages over Bulk Current Injection Probes:
a) Typically requires only about 15% of the power necessary to achieve a given
test level.
b) The EM Clamp provides AE decoupling (especially at higher frequencies),
where the Bulk Current Injection Probe offers none.
The EM Clamp establishes both capacitive and inductive coupling to the EUT
cable.
The rotary latches can be set to three (3) positions, as shown in Figure 9.
The UNLATCHED positions allow
the upper half of the EM Clamp
to hinge open and closed, so
that the cable under test can
be placed in the cable
channel.
Whenever the EM Clamp is not
in use, the STORAGE positions
allow the upper half of the
clamp to be secured without
contact between the ferrites.
This prevents the ferrites from
shattering should the clamp be
dropped, and also prolongs the
life of the ferrite spring
assemblies.
The LATCHED positions must be used whenever measurements are being
performed. In the LATCHED position, the upper and lower halves of the ferrites are
compressed together. The EM Clamp will not measure properly unless the rotary
latches are in the LATCHED positions.
Page 17 of 39
INSTRUCTION MANUAL
S E C T I O N 4 - P R O D U CT I NSTA L LATION
1 9 1 2 1 E l T o ro R d ● S i l v e ra d o , C a l i f o rn i a 9 2 6 7 6 ● ( 9 4 9 ) 4 5 9 - 9 6 00 ● c o m - p o w e r. c o m
Rev050321
The ADA-515-CLEM 150 ohm to 50 ohm
Adapters and the CLEMA-6146
Calibration Adapters allow for adjustment
of the height of the 4 mm copper rod. For
each adapter set, the height adjustment
is made by loosening the four screws
shown circled in red on Figure 10,
adjusting the height up or down, then re-
tightening the screws.
For coupling factor and test level calibration measurements
using the ADA-515-CLEM Adapters, the height should be
adjusted so that the 4 mm rod is located in the bottom position
of the clamp opening, as shown in Figure 11.
For impedance and decoupling factor measurements using
the CLEMA-6146 Adapters, the height should be adjusted so
that the 4 mm rod is located in the center position of the
clamp opening, as shown in Figure 11.
It is critical that the EM Clamp be installed in a manner which ensures that EACH of
following conditions are satisfied:
•The metallic mounting bracket must be connected to earth ground.
•The input signal power must not exceed the ratings/time durations specified in
the product specifications table in section 3.5.
Failure to comply with any of these points may damage the equipment and/or
pose an electrical hazard.
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INSTRUCTION MANUAL
S E C T I O N 5 - C A L IBRAT I O N OF EL E CTRICA L PERFO R M A NCE PA R A METE R S
1 9 1 2 1 E l T o ro R d ● S i l v e ra d o , C a l i f o rn i a 9 2 6 7 6 ● ( 9 4 9 ) 4 5 9 - 9 6 00 ● c o m - p o w e r. c o m
Rev050321
Calibration of EM Clamps can be divided into two categories.
The first category includes the calibration/measurement of its electrical performance
parameters, such as Coupling Factor, Decoupling Factor and Impedance.
These calibrations are typically performed on a periodic basis in order to verify that the
product continues to be in proper working order, (i.e.: functioning within its prescribed
specifications and/or in compliance with the applicable requirements. These calibrations
are discussed in the following subsections.
The second category includes test level calibrations, which will be discussed in detail in
section 6.
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INSTRUCTION MANUAL
S E C T I O N 5 - C A L IBRAT I O N OF EL E CTRICA L PERFO R M A NCE PA R A METE R S
1 9 1 2 1 E l T o ro R d ● S i l v e ra d o , C a l i f o rn i a 9 2 6 7 6 ● ( 9 4 9 ) 4 5 9 - 9 6 00 ● c o m - p o w e r. c o m
Rev050321
In order to measure the coupling factor, a 50 ohm signal source and 50
ohm measuring instrument are needed. These may be separate
instruments or may be combined into a single instrument, such as a network
analyzer, or spectrum analyzer with tracking generator.
Also needed are the ADA-515-CLEM 150 ohm to 50 ohm Adapter Pair with
the 68 cm length, 4 mm diameter copper rod, along with a 50 ohm
termination.
A typical test setup for instrument normalization and measurement of
coupling factor is illustrated in Figure 12.For coupling factor measurements,
the height of the 4 mm copper rod must be adjusted to be in the bottom
position of the clamp opening (see section 4.3).
The coupling factor, at each test frequency, is equal to the measured
amplitude difference between the normalization setup and the
measurement setup shown in Figure 12.
No limits are defined for coupling factor. Typical CLEM-6146 EM Clamp
data are shown in Figure 5 of the present document.
Typical performance curves for three (3) different clamps are provided in
Figure A.11 in Edition 4.0 of IEC 61000-4-6.
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INSTRUCTION MANUAL
S E C T I O N 5 - C A L IBRAT I O N OF EL E CTRICA L PERFO R M A NCE PA R A METE R S
1 9 1 2 1 E l T o r o R d ● S i l v e r a d o , C a l i f o r n i a 9 2 6 7 6 ● ( 9 49 ) 4 5 9 - 9 6 0 0 ● c o m - p o w e r . co m
Rev050321
The decoupling factor and impedance measurements must be performed
using a Vector Network Analyzer with a [minimum] two-port S-parameter
Test Set. Also needed is the CLEMA-6146 Calibration Adapter Pair with the
63 cm length, 4 mm diameter copper rod, and 50 ohm termination.
For decoupling factor and impedance measurements, the height of the 4
mm copper rod must be adjusted to be in the center position of the clamp
opening (see section 4.3).
Calibration of Impedance and Decoupling Factor is based on S11, S21, S12
and S22 measurement data in a 50 ohm system (Zref). However, the
characteristic impedance of the test jig (Z’ref) is different from 50 ohms. It is
determined by the height of the clamp opening above the ground plane.
Using ABCD transformation, a set of transformed parameters independent
from Zref is obtained using the ABCD Transformation Equations given later in
this section.
Prior to performing the measurements, a full 2-port calibration must be
performed (2-port reflection, transmission, and isolation). Illustrated in Figure
13 are examples of the setup for the network analyzer calibration, as well
as the appropriate accessories and connections for the S-Parameter
measurements of the EM Clamp.
Four sets of data are required: S11, S21, S12 and S22; each set consisting of
magnitude and phase values at each test frequency.
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