COM-power corporation FCLC-400 User manual

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INSTRUCTION MANUAL
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INSTRUCTION MANUAL
For
BULK CURRENT
INJECTION PROBE
Model: CLCI-400
and
CALIBRATION FIXTURE
Model: FCLC-400
(optional)

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INSTRUCTION MANUAL
- T AB L E S O F CO N T E N TS -
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INSTRUCTION MANUAL
- T AB L E S O F CO N T E N TS -
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INSTRUCTION MANUAL
S EC T I O N 1 - I NTR OD U CT I ON
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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
based on our understanding of the current, relevant 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 refer and adhere to the appropriate standards, rules, procedures,
practices, and/or relevant interpretations thereof for your application in order to ensure
proper application of the test.
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 EC T I O N 2 -P R OD U C TS A V AI L AB L E FR O M C O M - PO W E R
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INSTRUCTION MANUAL
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SECTION 3 -PRODUCT INFORMATION
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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:
9 CLCI-400 Bulk Current Injection Probe
9 Calibration Certificate and Associated Data
OTIONAL ITEMS:
9 FCLC-400 Calibration Fixture
9 ADA-515-2 150Ωto 50ΩAdapter Set
9 ATTN-6-100W Power Attenuator (6 dB, 100W)
9 ATTN-30-100W Power Attenuator (30 dB, 100W)
9 TERM-100W Termination (50Ω)
9 DCD-1000-100W Dual Directional Coupler

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INSTRUCTION MANUAL
S EC T I O N 3 -P RO D U C T I N F O R MA T IO N
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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 following warnings/caution statements must be adhered to in order to
ensure safe operation of the product.
CAUTION:
Hazardous Voltages present during operation. Do not handle probe
while test is in progress.
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.
•HEAT - The instrument should be situated away from heat sources such as heat
registers or other instruments which produce heat.
•CLEANING –Clean the instrument outside surfaces of the device with a soft, lint-
free cloth. If necessary, a mild detergent may be used.
•NON-USE PERIODS - Unplug the power cords of the instrument when it will be left
unused for a long period of time.
•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 EC T I O N 3 -P RO D U C T I N F O R MA T IO N
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Input/Output Port
When used for bulk current injection, this is the input port of the probe. When used as a
measuring device, this is the probe’s output port. It is fitted with an N-type coaxial connector.
Spring-loaded Clasps
These two (2) clasps, when secured over their respective brackets, lock the clamp into its
closed position
Clasp Brackets
These two (2) brackets anchor the respective clasps in order to lock the clamp into its closed
position.
Clamp Window
This clamp window is the aperture in the center of the clamp through which the wire(s),
cable(s) or cable bundle(s) to be tested are passed through.

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Fixture Opening
The CLCI-400 is installed within this opening so that the center conductor rod of the fixture
passes through the approximate center of the probe aperture.
Center Conductor Rod
This is the fixture’s center conductor.
Calibration Fixture Coaxial Ports
These are female N-type coaxial connectors providing input/output connections to the
fixture.
Thumb Screws for Removable Top Plate
These (6) screws secure the fixture’s top plate to the fixture assembly.
Removable Top Plate of Fixture
In order to install/remove the clamp into/from the calibration fixture, the top plate must be
removed by removing the six (6) thumb screws. The top cover and thumb screws must be
replaced prior to the performance of tests.
Teflon Spacers
These spacers help in centering the clamp within the fixture; and thereby aligning the center
conductor through the center of the probe window.

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INSTRUCTION MANUAL
S EC T I O N 3 -P RO D U C T I N F O R MA T IO N
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Product
Bulk Current Injection Probe
Model
CLCI-400
Frequency Range
10 kHz to 400 MHz
Standard(s)
MIL-STD 461, RTCA-DO-160
Impedance
50Ω (nominal)
Maximum Input Power
100 Watts (continuous)
Coaxial RF Connector
N-type (female)
Dimensions (H)x(W)x(D)
5” x 2.75” x 5.75” (12.75 x 7 x 14.6 cm)
Probe Window Diameter
1.575” (4 cm)
Weight
4.5 lbs. (2.04 kg)
Operating Temperature
40°F to 104°F (5°C to 40°C)
All values are typical, unless specified.
All specifications are subject to change without notice.
Product
Calibration Fixture
Model
FCLC-400
Frequency Range
10 kHz to 400 MHz
Standard(s)
MIL-STD 461, RTCA-DO-160
Impedance
50Ω (nominal)
VSWR
(empty fixture –
no probe installed)
0.01-50 MHz
≤1.05 : 1
50-150 MHz
≤1.2 : 1
150-200 MHz
≤1.35 : 1
200-300 MHz
≤2 : 1
200-350 MHz
≤2.5 : 1
350-400 MHz
≤3 : 1
Coaxial RF Connectors
(2) N-type (female)
Dimensions (H)x(W)x(L)
6.6” x 7” x 10” (16.7 x 18 x 25.5 cm)
Weight (empty fixture)
8 lbs. (3.63 kg)
Max. Probe Diameter
5.2” (13.2 cm)
Min. Probe Aperture Diameter
0.79” (2 cm)
Max. Probe Width
2.83” (7.2 cm)
Operating Temperature
40°F to 104°F (5°C to 40°C)

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INSTRUCTION MANUAL
S EC T I O N 4 -C AL I B RA T IO N
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Calibration fixtures provide a means by which current probes, including bulk current
injection (BCI) probes, can be calibrated to determine the insertion loss and transfer
impedance factors for the probe. Fixtures are also used to establish, or calibrate, drive
levels for conducted susceptibility tests performed using BCI probes. These applications
are discussed in more detail in the following sections.
The FCLC-400 Fixture is specifically designed for use with the CLCI-400.The intent of the
fixture is to maintain the coaxial structure of the transmission line, while allowing the probe
to be installed around the center conductor of the coaxial line.
Illustrated in Figure 10 is the procedure to be followed for installing the CLCI-400 BCI
Probe into the FCLC-400 Calibration Fixture.

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INSTRUCTION MANUAL
S EC T I O N 4 -C AL I B RA T IO N
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The insertion loss of a current probe, at any given frequency quantifies the
difference between the voltage quantity delivered to the probe’s input
port and the voltage quantity induced onto the center conductor of the
test fixture into which the probe is installed.
For a current monitor probe, a known voltage is applied into one side of the
calibration fixture, with the opposite side terminated into 50 ohms; while
measuring the voltage present at the output of the probe. The difference
between the applied voltage and the measured voltage, at any given
frequency, is the insertion loss of the probe.
For an injection probe, a known voltage is applied to the input port of the
probe, while measuring the voltage present on one side of the calibration
fixture, with the opposite side terminated into 50 ohms. Again, the
difference between the applied voltage and the measured voltage, at
any given frequency, is the insertion loss of the probe.
Shown in Figure 11 are two equivalent schematic circuits for the two
respective measurement methods. The physical test setup showing the
equipment and connections is illustrated in Figure 12.
As measured in either of the circuits shown in Figure 11, the following
equation defines the insertion loss of the probe, at any given frequency:
NOTE: Typical Insertion Loss Values for the CLCI-400 are represented in Figure 5
(Section 3.7).

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S EC T I O N 4 -C AL I B RA T IO N
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When the probe is used to measure current, the transfer impedance factors
convert the [measured] voltage quantity present at the probe’s output port
into a current quantity corresponding to the actual current through the
conductor(s) passing through the probe aperture.
This factor includes the actual insertion loss of the probe, and also performs
the function of converting the measured voltage into a current value.
Based on the assumption that the probe is connected to a measuring
instrument having a nominal input impedance of 50 ohms, the conversion
is simple Ohm’s Law:
The transfer impedance factors are determined by combining the
conversion described above with the insertion loss calibration data, as
shown below:
The transfer impedance factors can be applied in practice, as follows:

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INSTRUCTION MANUAL
S EC T I O N 5 -C A LI B R A TI O N & T E S T P R O CE D U R E S - MI L - S TD - 4 6 1 G ( C S 11 4 )
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The information contained within this section is offered as guidance only. The relevant
standards and/or test plans should be consulted to ensure proper application of the tests
to be performed. The information provided is based on MIL-STD-461G, and may or may
not be appropriate for tests performed according to this or other editions of the standard.
The frequency range of the CS114 test is typically 10 kHz to 200 MHz. This section
addresses the determination of the intermediate test frequencies in this range. For
the purposes of this document, it is assumed that a ‘stepped’ frequency scan will
be performed. If you are to perform a ‘swept’ analog scan, refer to the
appropriate standard for guidance.
In a stepped scan, the intermediate test frequencies are logarithmically spaced,
and determined through calculation according to Table III of MIL-STD-461G, which
is summarized in Table 3 below:
Frequency Range
Maximum Step Size
30 Hz –1 MHz
0.05 fo
1 MHz –30 MHz
0.01 fo
30 MHz –1 GHz
0.005 fo
In Table 3, forepresents the current test
frequency. So, if the first test frequency
is 10 kHz, the step size to the next test
frequency is equal to 0.05 * 10 kHz, or 500
Hz. Therefore, the second test
frequency is 10.5 kHz. The step size to the
third test frequency will then be equal to
0.05 * 10.5 kHz, or 525 Hz; so, the third test
frequency is 11.025 kHz; and so forth.
Given in Table 4 is a truncated example
of the test frequencies for the respective
frequency ranges.
There should be a total of 815 test
frequencies for the frequency range of
10 kHz to 200 MHz.

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S EC T I O N 5 -C A LI B R A TI O N & T E S T P R O CE D U R E S - MI L - S TD - 4 6 1 G ( C S 11 4 )
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There are five severity levels at which the CS114 test can be performed (Curves 1
through 5). Refer to Table VI of the appropriate MIL-STD-461 document to
determine the appropriate curve for your application. Curves 1 through 5 are
defined in Figure CS114-1, and in Figure 13 below.
As shown in Figure 13, each curve begins at 10 kHz, ascending linearly with the
logarithm of frequency at a rate of 20 dB/decade until it reaches 1 MHz. Each
curve remains at a constant amplitude between 1 MHz and 20 MHz; and then
ascends linearly with the logarithm of frequency at a rate of 8 dB/decade until it
ends at 200 MHz.
The value at any point on either slope can be calculated using the values and
formulas shown in Table 5.