MPB CCM User manual

MPB S.r.l. Tel [phone]
Via Giacomo Peroni 400/402 Fax [phone]
00131 ROMA (RM) [e-mail]
www.gruppompb.com
User Manual
CCM
Contact Current
Meter
Updated to Firmware Version:
CCM V1.06
Manual Version:
V1.14
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SAFETY NOTES
Read carefully before using the product
MPB works to provide its customers with the best safety conditions available,
complying with the current safety standards. The instrumentation described in
this manual has been produced and tested in conditions that fully comply with
the European standards. To maintain it in safe conditions, ensure the correct use
of the product and prevent any danger, these general instructions must be fully
understood and applied before any use.
This product is intended for industrial environments and laboratories and
should be used by authorized personnel only. The CCM was designed and devel-
oped to be used according to the norms and regulations of the country where the
worker is operating in.
Please use the device only after checking the presence and valid-
ity of the safety devices (e.g. breakers, dierential switches and the
conformity of the grounding)
MPB disclaims any responsibility for a dierent use of the device.
For safety reasons, the GROUND PLANE mode measurement (whose expla-
nation will be detailed in the following chapters) MUST always be done before
the HAND mode measurement. The GROUND PLANE mode measurement
shall not exceed the limits dened by the 2013/35/EU regulation (CCM-A ver-
sion) or 2004/40/EC (for the CCM version) and must be performed ONLY with
the cover provided with the instrument. Please also note that even when in
GROUND PLANE mode, total safety is not guaranteed if the use of the instru-
ment is not made according to the instructions explained in this manual. All
these procedures will be better underlined below.
II - USER MANUAL-V1_14 CCM EN
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Declaration of Conformity
(in accordance with the Directives: EMC 89/336/EEC and Low Voltage 73/23/EEC)
This is to certify that the product: CCM
(Contact Current Meter)
complies with the following European Standards:
Safety: CEI EN 61010-1 (undated reference, applies to all editions)
EMC: EN 61326-1 (undated reference, applies to all editions)
This product complies with the essential requirements of the Low Voltage Directive
2014/35/EU, EMC directive 2014/30/EU and with the RoHs Directive 2011/65/EU.
MPB S.r.l.
USER MANUAL-V1_14 CCM EN - III
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IV - USER MANUAL-V1_14 CCM EN
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Contents
1 General Information 1
1.1 Introduction .............................. 2
1.2 Description .............................. 2
1.3 Composition .............................. 2
1.3.1 Standard Conguration .................... 2
1.3.2 Optional Kit .......................... 3
1.3.3 Optional Item ......................... 3
1.4 Front .................................. 4
1.5 Rear .................................. 5
1.6 Technical Specications ........................ 6
2 Principle of operation 9
2.1 Logic Schema ............................. 9
2.2 Measurements ............................. 10
2.3 Contact Current ............................ 10
2.4 Safety ................................. 11
3 CCM Usage 13
3.1 Turn On ................................ 13
3.2 First Use ................................ 14
3.3 Standby Screen ............................ 16
3.4 Hand or GP .............................. 16
3.5 Bandwidth/Total ........................... 18
3.6 Built-in self-test ............................ 19
3.7 CCM Menu .............................. 21
3.7.1 Regulation limits ....................... 22
3.7.2 Beep on press ......................... 22
3.7.3 Alarm ............................. 22
3.7.4 Auto OFF ........................... 23
3.7.5 Date & Time ......................... 24
3.7.6 Contrast ............................ 25
3.7.7 Clear Data ........................... 25
V
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CONTENTS
4 Data Download 27
4.1 Connect to PC ............................ 27
4.2 Data Format ............................. 28
5 JIG - General Information 31
5.1 Introduction .............................. 31
5.2 Description .............................. 32
5.3 Composition .............................. 32
5.4 Kit Case ................................ 33
6 JIG - Functioning 35
6.1 Equipment ............................... 35
6.2 Install the CCM on the JIG ..................... 36
6.3 Ground Plane Test ......................... 38
6.4 Hand Test .............................. 39
6.5 Certicate Measurements ....................... 40
6.5.1 Low Band ........................... 40
6.5.2 Medium Band ......................... 40
6.5.3 High Band ........................... 41
Figures List 44
VI - USER MANUAL-V1_14 CCM EN
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Chapter 1
General Information
Figure 1.1: CCM
1
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1. General Information
1.1 Introduction
CCM was designed to measure in a fast and accurate way the contact current
that may be generated when touching electrical/electronic equipment inside a
radio frequency eld.
1.2 Description
CCM (Figure 1.1) is a portable measuring device with two measurement modes.
It can measure by means of the GROUND PLANE (with related cover to wrap
the instrument and resistance for closing the circuit on the ground), and it can
work without a cable, making use of the impedance level of the user through the
conductive area on the handle. In the next chapters we will go more deeply into
this subject.
1.3 Composition
1.3.1 Standard Conguration
• Rigid Case
• CCM
• 1,5 V Batteries (2 pcs.)
• RG316 Cable (length 3 m) sma(M) sma(M)
• Body Simulation Impedance (Z-2251)
• Ground Plane plate (dimensions 360 X 239 mm)
• Ground Plane Cover
• USB Cable for PC Connection
• USB Key with:
 User Manual
 Data Sheet
• Calibration Certicate
2 - USER MANUAL-V1_14 CCM EN
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1. General Information
1.3.2 Optional Kit
CCM-JIG Kit, including:
• Calibration JIG
• Standard resistance (R45)
• Cable (length 1 m) N(M) sma(M)
1.3.3 Optional Item
• IEC-60990 Body Simulation Impedance
USER MANUAL-V1_14 CCM EN - 3
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1. General Information
1.4 Front
In Figure 1.2 is shown the CCM front panel:
On/O switch
Micro USB connector
Keyboard
Figure 1.2: CCM front
4 - USER MANUAL-V1_14 CCM EN
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1. General Information
1.5 Rear
In Figure 1.3 is shown the CCM rear panel:
Measure Tip
Measure trigger
Ground connector
Figure 1.3: CCM rear
USER MANUAL-V1_14 CCM EN - 5
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1. General Information
1.6 Technical Specications
Frequency Range
Low band 40 Hz to 2.5 kHz
Medium band 2.5 kHz to 100 kHz
High band 100 kHz to 110 MHz (CCM);100 kHz
to 10 MHz (CCM-A)
Frequency Response
Low band @ 1 mA <+
−
1.5 dB
Medium band @ 100% <+
−
1.5 dB
High band @ 20 mA <+
−
1.5 dB
Measurement range
Low Band
Level range 0.01...3 mA (ICNIRP limit 1 mA)
Damage level 100 mA
Resolution 1 nA
Dynamic range @ 500Hz 50 dB
Linearity error @ 500Hz; 0,3...3 mA <+
−
1 dB
Medium band
Level range 1...300%(ICNIRP limit 1...40
mA)(Ty)
Damage level 500 %
Resolution 1 nA
Dynamic range @ 25kHz 50 dB
Linearity error @ 25kHz; 10...200 % <+
−
1 dB
High band (CCM:100 kHz...110 MHz,CCM-A:100 Khz...10 MHZ)
Level range 0.4...120 mA (ICNIRP limit 40 mA)
Damage level 300 mA
Resolution 10 nA
Dynamic range @ 10MHz 50 dB
Linearity error @ 10MHz; 12...120 mA <+
−
1 dB
Input signal attenuation 200 MHz > 7 dB
300 MHz > 18 dB
400 MHz > 31 dB
500 MHz ... 3 GHz > 45 dB
Input signal attenuation (CCM-A) 20 MHz > 7 dB
30 MHz > 18 dB
40 MHz > 31 dB
100 MHz ... 3 GHz > 45 dB
Measurement modes Hand and Ground Plane
Alarm sound Programmable level
Display Graphic LCD with led backlight
Detectors RMS
Contact tip Interchangeable
USB Interface Micro USB connector
6 - USER MANUAL-V1_14 CCM EN
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1. General Information
Standards Directive 2004/40/EC (CCM); Directive 2013/35/EU (CCM-A)
Operating Temperature +10
◦
C to +40
◦
C
Power supply
Battery 2pcs AA Alkaline
Operation 48 Hours
Dimension 205 ×90 ×45 mm
Weight 200 g
Recommended calibration interval 24 months
Built-in self-test Safety front-end functionality test
USER MANUAL-V1_14 CCM EN - 7
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1. General Information
8 - USER MANUAL-V1_14 CCM EN
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Chapter 2
Principle of operation
2.1 Logic Schema
The schema shown in Figure 2.1 describes the CCM work ow:
Hand Low Band
Filter
true
RMS
detector
Display
Ground
Plane
Medium
Band
Filter
true
RMS
detector A/D
µ P
MEM USB
Tip High
Band
Filter
true
RMS
detector
Figure 2.1: CCM Block Diagram
9
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2. Principle of operation
2.2 Measurements
The CCM digital nature allows it to measure contact currents through the true
RMS (Root Mean Square) value for all analog signals from 40Hz. The RMS value
of a waveform signal is equal to a DC current which provides the same power to
the load. The signal measured by the TIP passes through the most suitable lter
(Low, Medium and High), then arrives to the true RMS detector, that makes a
conversion of the measured current to RMS . The equation is the following:
erms =s1
TZT
0
V(t)2dt
The actual regulations denes the minimum requirements for the safety of
workers in areas of risk, and the limit values for the exposure to contact current.
2.3 Contact Current
The contact current ows when a person or an object serve as electrical conductors
when reaching another metallic object immersed in an electromagnetic eld: the
contact current is expressed in Amperes. The moment right after the contact can
imply a discharge of associated currents (First attachment of 2013/35/EU). In
the workplace, as well as in the world we live in, the electric and magnetic elds
are always present and can have natural or articial origin. The natural electric
elds are, for example, those produced by the accumulation of electric charges
during a lightning, while the natural magnetic elds are those that are found in
nature, such as the terrestrial one that orients the compass needle North-South.
The electric and magnetic articial elds are produced by articial devices and
systems, such as electrical equipment or systems for the distribution of electricity.
The electromagnetic eld can be dened as a physical phenomenon resulting
from the simultaneous presence of an electric eld and a magnetic eld. Moving
from the source of the electromagnetic eld, the waves decrease in intensity,
it is therefore clear that the intensity is maximum if there is a contact with
the object or with the system which is generating the electromagnetic eld. A
device with metallic shell, if immersed in an electromagnetic eld, can become
a RF voltage carrier and can accumulate electrical charges. If you come into
contact with the device without adequate protection, you can risk that the RF
voltage discharges to ground owing through the limbs and the body. In this
case, the electrical charges on the device, immersed in the electric eld through
the operator's body, have generated a contact current. An electrical equipment
not properly shielded can emit electromagnetic waves. When coming into contact
with that machinery without adequate protection, even in this case there is a risk
that the electromagnetic waves, owing through the limbs and the operator's
body, can generate a contact current.
10 - USER MANUAL-V1_14 CCM EN
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2. Principle of operation
2.4 Safety
The GP measurement mode has only been developed for safety reasons, since it
does not guarantee reliable measurements. For the operator's safety and security
it is absolutely mandatory to make sure that, when performing GP measurements,
the cover provided with the instruments wraps it like in the picture below, the
plate is set in the same position as the operator's and the impedance is connected
to the plate connector and not to the CCM. For more details please scroll down
to 3.4
;
Figure 2.2: GP cover
USER MANUAL-V1_14 CCM EN - 11
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2. Principle of operation
12 - USER MANUAL-V1_14 CCM EN
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Chapter 3
CCM Usage
3.1 Turn On
Release n
◦
Figure 3.1: Turned On CCM
When the CCM is on, it displays the MPB logo and the rmware version
(Figure 3.1). After a few seconds a warning message will appear (as in Figure 3.2),
and users have to declare to have read this manual and to be aware of the risks
involved during the current measurement. In case of negative answer (by pressing
DENY), the device will automatically turn o.
13
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3. CCM Usage
Figure 3.2: CCM Menu
3.2 First Use
If the CCM has just been switched on (or if it's been more than one minute since
the last measurement) it is in STANDBY mode. At the rst use, the user will
have to set date & time (please refer to Chapter 3.7.5), contrast (please refer
Chapter 3.7.6), and clear eventual data (please refer Chapter 3.7.7). Once all the
data have been set, or immediately if not in case of a rst use, a message will
appear: GP MODE MUST use the cover. The use of the cover is mandatory in
Ground Plane mode, which is the default mode: by pressing the trigger you will
conrm to have noticed the instruction: by pressing the trigger again, the device
will select the relay and active the WAIT mode, which indicates that the device
is loading. In the end, the message READY is displayed. Before pressing the
trigger again, the operator will have to wait for the appearance of the READY
message on the screen (Figure 3.4). From this moment on, the device is ready to
perform the test in real-time.
So, in order to perform measurements, please follow the instructions below:
• Press the trigger to switch the instrument mode from STANDBY to READY.
Only when the READY key appears (please do not press the trigger again)
reach the equipment under test with the tip and, only after making con-
tact, press the trigger to start the measurement. You can make single or
consequential measurements.
14 - USER MANUAL-V1_14 CCM EN
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