EMTEST CNI 508 N2 User manual

Manual
f o r O p e r a t i n g
CNI 508N2 Assembly
Coupling decoupling assembly for
unshielded and shielded high-speed
communication lines up to 1Gbit/s
CNI 508 N2
SPN 508 N1
Coupling/decoupling network available on the market to couple
Surge onto unshielded and shielded high-speed communication
lines with data rates up to 1,000MBit/s.
The CNI 508N2 assembly includes a coupling network, and a
decoupling network. As protection equipment the SPN 508N1
limits the residual voltage at the AE side. Additionally, the CNI
508N2 can be used as a coupling/decoupling network to apply
Surge as well as Ringwave and Burst pulses to shielded lines.
Burst, Surge and
Ringwave Pulse as per.
–IEC 61000-4-4
–IEC 61000-4-5
–IEC 61000-4-12
Version:
1.02 / 24.05.2013
the benchmark for emc
Replaces:
1.01 / 17.04.2013
Filename:
UserManual-CNI508N2-E-V1.02.doc
Printdate:
24.05.13

EM TEST CNI 508 N2 system
Manual of operation V 1.02 2 / 20
EM TEST (Switzerland) GmbH
Sternenhofstrasse 15
4153 Reinach BL1
Switzerland
Phone : [phone]
Fax : [phone]
URL : http://www.emtest.com
Copyright © 2013 EM TEST (Switzerland) GmbH
All right reserved.
Specifications subject to change

EM TEST CNI 508 N2 system
Manual of operation V 1.02 3 / 20
Content
1. List of assembly components......................................................................................................................4
1.1. CNI 508 N2 Coupling / decoupling network..........................................................................................4
1.2. SPN 508 N1 Surge Protection Network................................................................................................4
2. Operating Functions .....................................................................................................................................5
2.1. Front and Rearside CNI 508N2 view ....................................................................................................5
2.2. Frontsides SPN 508N1 .........................................................................................................................6
3. General ...........................................................................................................................................................7
3.1. Test methods for surge to high speed datalines...................................................................................7
4. Technical Data CNI 508 N2 assembly............................................................................................................8
4.1. Technical Data CNI 508N2 ...................................................................................................................8
4.2. Technical Data SPN 508N1 ..................................................................................................................9
5. Test set up....................................................................................................................................................10
5.1. Surge test to shielded datalines..........................................................................................................10
5.2. Surge test to datalines ........................................................................................................................11
5.3. Surge test to datalines with SPN 508N1 protection............................................................................11
5.4. Burst test to datalines..........................................................................................................................12
5.5. Power over Ethernet ...........................................................................................................................13
6. Maintenance and calibration......................................................................................................................14
6.1. General................................................................................................................................................14
6.2. Calibration and Verification.................................................................................................................14
6.2.1. Factory calibration...............................................................................................................................14
6.2.2. Guideline to determine the calibration period of EM Test instrumentation.........................................14
6.2.3. Calibration of Accessories made by passive components only:.........................................................14
6.2.4. Periodically In-house verification.........................................................................................................14
7. Delivery Groups...........................................................................................................................................15
7.1. Basic equipment and accessories.......................................................................................................15
7.1.1. CNI 508 N2..........................................................................................................................................15
7.1.2. SPN 508 N1 ........................................................................................................................................15
8. Appendix ......................................................................................................................................................16
8.1. Declaration of CE-Conformity .............................................................................................................16
8.2. Pin configuration at different systems................................................................................................17
8.3. Transfer Characteristics CNI 508N2..................................................................................................18
8.4. NE8FDY-C6 connector replacement .................................................................................................19

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Manual of operation V 1.02 4 / 20
1.
List of assembly components
1.1.
CNI 508 N2 Coupling / decoupling network
The CNI 508N2 is a specifically
designed CDN for testing high-speed
communication lines. Its unique
design allows data rates of up to
1,000MBit/s to be transmitted without
degradation by the
coupling/decoupling network. The
decoupling network protects the
auxiliary equipment limiting the
residual voltage to max. 40V@2kV
for common-mode surge test pulses.
Moreover, the CNI 508N2 fully
supports PoE and PoE+ standard
requirements as per IEEE 802.3.
The CNI 508N2 may also be used
for testing shielded cables as per
IEC/EN 61000-4-5, Fig. 16.
Fig 1.1: CNI 508N2
It simplifies the test set-up and offers proper decoupling of the auxiliary equipment as well as a high safety for the
operator as the surge is coupled through the CNI 508N2 rather than being directly applied to the metallic case of
the DUT.
Additionally, the CNI 508N2 may also be used to couple Ringwave pulse (0.5us/100kHz) and burst pulses to
shielded cables.
1.2.
SPN 508 N1 Surge Protection Network
The SPN 508N1 protects the auxiliary equipment with a residual
voltage of less than 10V. This Ethernet surge protection device
can alternatively use for all other application where the user
must protect his devices from any overvoltage.
The SPN 508N1 has a galvanic isolation of the signal between
protected and unprotected side.
For decoupling the pulse in direction to the AE port, the CNI
508N2 and the surge protection network SPN 508 N1 must
mandatory be connected at the other side of the CNI 508N2.
Fig 1.2: SPN 508N1

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Manual of operation V 1.02 5 / 20
2.
Operating Functions
2.1.
Front and Rearside CNI 508N2 view
Figure 2.1 : CNI 508N2 front and rear views
1Burst input from Burst Generator
2Output to EUT Port
3Handle open position
4Surge input from Surge Generator to shield
5Surge input from Surge Generator to lines
6Handle closed position
7Output to RJ45 AE Port
8Earth plugs
1 Burst input
Input for the burst pulse application to the shield of the Ethernet cable. The burst pulse is applied over a 50Ωresistor.
2 Output to EUT Port
RJ 45 output to EUT Port. The connector is insulted up to 5kV from the housing. It is possible to replace the connector after
theconnector lifetime. RJ 45 connector type Neutrik Ethercon CAT 6 chassis connector
PartNo NE8FDY-C6
3 Handle open position
Handle open position for carrying the CNI 508 N2.
4 Surge input to shield
Input for the surge pulse application to the shield of the Ethernet cable. The surge pulse is applied direct to the shield.
5 Surge input to lines
Input for the surge pulse application to the the lines of the Ethernet cable.
6 Handle closed position
Handle closed position for operate the CNI 508 N2.
7 Output to AT Port
RJ 45 output to AE Port. The connector is not insulted from the housing. It is possible to replace the connector after the
connector lifetime. RJ 45 connector type Neutrik Ethercon CAT 6 chassis connector
PartNo NE8FDY-C6
8 Earth plugs
Connectors for connect the frames between the different devices of the CNI 508N2 assemply. The earth cable
must be connected to reference GND.

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2.2.
Frontsides SPN 508N1
Figure 2.2 : SPN 508N1 front views
1Insulating plate
2Indication Protected side
3Output Port AE
4 Earth plugs
5Indication Unprotected side
6Output Port EUT via coupling/decoupling network
1 Insulating plate
High voltage insulation plate for insulate the RJ45 connector against the metal part of the device housing. The
withstand voltage is >5kV.
2 Indication Protected side
This side is protected against the high voltage.
3 Output Port AE side RJ45 connector
RJ 45 output to AE Port. The connector is insulated from the housing. It is possible to replace the connector
after the connector lifetime. RJ 45 connector type Neutrik Ethercon CAT 6 chassis connector
PartNo NE8FDY-C6
4 Earth plug
Earth plug on front and rear side with 4mm banana plugs. During the test the user must connect all devices of
the CNI 508N2 assembly with the delivered yellow ground cable. These connections are the equipotential
bonding between the devices during the surge test.
5 Indication Unprotected side
From this side the user connect the shielded RJ45 cable to the CNI 508N2. This side is not protected against
high voltage.
6 Output EUT Port
Output port EUT to the coupling/decoupling network CNI 508N2. The RJ 45 connector is insulated from the
housing. It is possible to replace the connector after the connector lifetime. RJ 45 connector type Neutrik
Ethercon CAT 6 chassis connector
PartNo NE8FDY-C6

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Manual of operation V 1.02 7 / 20
3.
General
Coupling of the surge pulses is achieved by means of the coupling / decoupling network CNI 508N2. For additional
protection of the auxiliary equipment by reducing the residual voltage level the SPN 508N1 is used.
The CNI 508N2 design is based on the
- IEC 61000-4-5 (Ed2.0: 2005) figure 15 and
- Draft IEC 61000-4-5 (Ed3.0: 2012) figure 11.
The CNI 508N2 allows the following couplings with
separate input connectors:
- Surge and Ringwave pulses to datalines
- Surge and Ringwave pulses to shield
- Burst pulses to shield
For an additional overvoltage protection of the AE port
the SPN 508N1 can be used for limit the residual
voltage to approx. 10V. t
Fig 3.1:Principle design of the CNI 508N2
for Surge to high speed datalines
3.1.
Test methods for surge to high speed datalines
The IEC 61000-4-5 Ed.2 surge standard shows in figure 15 a coupling network for testing high speed datalines. The
international IEC standard committee TC 77 removed at the meeting (January 2011) in Malaysia the figure 15 in the
standard IEC 61000-4-5. The committee was of the opinion; the network in figure 15 does not work. Therefore
EM Test makes a proposal for a working solution.
The solution for a new coupling/decoupling is based on the existing methods of surge testing. There are two different
Methods for testing surge pulses on datalines.
Coupling to shielded lines
Test to shielded line is adapted from the figure
16 where the surge is applied direct to the
shield of the data cable.
Fig. 16 IEC 61000-4-5
Fig 3.2: coupling to shielded lines
Coupling direct to high speed lines
Test with coupling direct to the data-lines is
based to figure 15 of IEC 61000-4-5 standard.
The surge is applied direct to unshielded
symmetrical high speed data-lines. For
decoupling and protection it is necessary to
use separate devices of the CNI 508N2
assembly.
Fig. 15 IEC 61000-4-5
Fig 3.3: coupling to lines

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4.
Technical Data CNI 508 N2 assembly
4.1.
Technical Data CNI 508N2
Surge Test Mode
Coupling mode
shielded and unshielded cable with up to 4 pairs
Test voltage
Max. 3kV* (1.2/50us) (* only with connected RJ45 connector; if left
open the max. test voltage is limited to 1.5kV)
Residual voltage
Max. 40V @2kV Surge, line - PE
Ring wave Test Mode
Coupling mode
Shielded and unshielded cable with up to 4 pairs
Test voltage
Max. 3kV* (0.5us/100kHz) (* only with connected RJ45 connector;
if left open the max. test voltage is limited to 1.5kV)
Residual voltage
Max. 40V @2kV Ringwave, line - PE
Burst Test Mode
Coupling mode
shielded cable with up to 4 pairs
Test voltage
Max. 4kV* (5/50ns) (* only with connected RJ45 connector; if left
open the max. test voltage is limited to 1.5kV)
Residual voltage
Max. 40V @2kV Burst, line - PE
Inputs
Surge/Ringwave shield
SHV connector
Surge/Ringwave unshielded
SHV connector
Burst
SHV connector over 150Ω
Telecom line specification
Input/Output
RJ45 female connectors for telecom lines
Terminal layout
Pair 1: pins 1 / 2
Pair 2: pins 3 / 6
Pair 3: pins 4 / 5
Pair 4: pins 7 / 8
Data rate
up to 1,000MBit/s
Protection
± 60V between two pairs
Operating voltage
max. 57 VDC
Operating current
max. 1A
Connector RJ45
Neutrik NE8FDY-C6
Connector lifetime
> 1000 matching cycles
General Data
Dimensions
270mm x 110mm x 140mm (LxWxH)
Weight approx.
6.65kg
Temperature
5°C - 40°C (operation)
Rel. humidity
10% - 90%, non condensing

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4.2.
Technical Data SPN 508N1
Surge Test Mode
Number of lines
4 twisted pairs
Max. discharge current
2kA (8/20us) without destruction to RJ45 contacts
Residual voltage
Max. 10V
Insertion loss
< -1.5dB (300kHz - 100MHz)
Telecom line specification
Input/Output
RJ45 female connectors for telecom lines
Terminal layout
Pair 1: pins 1 / 2
Pair 2: pins 3 / 6
Pair 3: pins 4 / 5
Pair 4: pins 7 / 8
Data rate
up to 1,000MBit/s
General Data
Dimensions
115mm x 80mm x 80mm (LxWxH)
Weight approx.
0.70kg
Temperature
5°C - 40°C (operation)
Rel. humidity
10% - 90%, non condensing

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5.
Test set up
Generator output plugs
The Surge and Ringwave output plugs
are located at the rear side of the
impulse generator. The surge generator
impedance is 2Ω. The additional
impedance is inside the CNI 508N2.
Surge, Ringwave:
Output HV –COM on rearside of the
generator with direct coupling.
Set Coupling mode to “/”
Fig 5.1: Surge output on rearside
Fig 5.2: Burst pulse output
Grounding: The generator and the used devices of the CNI 508N2 assembly must be grounded properly to the
reference ground.
5.1.
Surge test to shielded datalines
This test will couple the surge pulse to the shield of a shielded RJ24 data-cable. The cable to the EUT must be
mandatory a shielded cable.
Figure 5.3: Setup for surge test to shielded datalines
The surge current on the cable shield can be very high and is limited by the 2Ω generator impedance. To use the
SPN 508N1 protection device will protect the AE port side and all connected devices.
The surge coupling voltage and current to the lines
depends on the impedance connected at the
CNI508N2 AE port.
In case of a short circuit as shown in figure 5.4, the
coupling to the lines is nearly 1:1 and a currentwave
8/20us appears... The protection network SPN 508N1
get during the surge pulse low impedance.
Is the at the AE Port a high impedance, an impulse
waveshape 1.2/50us appears at the EUT Port
Fig 5.4: CNI 508 N2 with Short circuit at the AE port
Current on lines approx. 400A
8/20us current wave with short circuit on AE Port
Voltage on line shield
1.2/50us voltage impulse with open circuit on AE port.

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5.2.
Surge test to datalines
This test will couple the surge pulse direct to the 8 datalines of the RJ45 cable. The cable to the EUT can be a
shielded or unshielded data-cable. Figure 5.5 shows the test setup for surge to datalines.
Figure 5.5 Setup for surge to datalines
5.3.
Surge test to datalines with SPN 508N1 protection
In case of a high protection level of approx. 10V at the AE port, the user can connect additional the SPN 508N1.
This protection will separate the AE side the surge by a galvanic insulation from the surge circuit. Figure 5.6
illustrates the setup with using a SPN 508N1 protection device.

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5.4.
Burst test to datalines
The burst pulse is applied from the 50Ωfront side EFT output to the blue HV-BNC plug of the CNV 508N2.
The coupling is to the shield. The burst pulse can be measured on the shield as on the datalines.
Fig 5.7: Setup for EFT / Burst testing

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5.5.
Power over Ethernet
In general, the power supply model is required depends the EUT. Therefore, in the most case it is necessary that
PoE power supply is manufactured from the EUT supplier.
It is advantageous that the EUT and the PoE’s power supply are tested with the same Surge pulse. In the both
components are installed and have to withstand surge pulses.
Figure 5.7 Principle layout of a power over Ethernet installation setup.
POE Supply must be connected between the SPN 508N1 and CNI 508N2

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6.
Maintenance and calibration
6.1.
General
The coupling network is absolutely maintenance-free by using.
6.2.
Calibration and Verification
6.2.1.
Factory calibration
Every EM TEST generator is entirely checked and calibrated as per international standard regulations before
delivery. A calibration certificate is issued and delivered along with a list of the equipment used for the calibration
proving the traceability of the measuring equipment. All auxiliary equipment and accessories are checked to our
internal manufacturer guidelines.
The calibration certificate and the certificate of compliance (if available) show the date of calibration.
The EM Test equipment are calibrated in the factory and marked with a calibration
mark. The used measuring instruments are traceable to the Swiss Federal Office of
Metrology.
The calibration date is marked. The validity of the calibration is to the responsibility
of the user’s quality system. Neither the certificate of calibration nor the
corresponding label mark any due date for re-calibration.
Example: Calibration mark
6.2.2.
Guideline to determine the calibration period of EM Test instrumentation
Our International Service Departments and our QA Manager are frequently asked about the calibration interval of
EM TEST equipment.
EM TEST doesn’t know each customer’s Quality Assurance Policy nor do we know how often the equipment is
used and what kind of tests is performed during the life cycle of test equipment. Only the customer knows all the
details and therefore the customer needs to specify the calibration interval for his test equipment.
In reply to all these questions we like to approach this issue as follows:
EM TEST make use of a solid state semiconductor switch technique to generate high voltage transients. A
precious advantage of this technique is the absolute lack of periodical maintenance effort. In consequence
thereof a useful calibration period has to be defined based on two criteria:
- The first one is the customer’s Quality Assurance Policy. Any existent internal regulation has to be applied at
highest priority. In the absence of such internal regulation the utilization rate of the test equipment has to be
taken into consideration.
- Based on the experience and observation collected over the years EM TEST recommends a calibration
interval of 1 year for frequently used equipment. A 2-years calibration interval is considered sufficient for
rarely used test generators in order to assure proper performance and compliance to the standard
specifications.
6.2.3.
Calibration of Accessories made by passive components only:
Passive components do not change their technical specification during storage. Consequently the measured
values and the plots stay valid throughout the storage time. The date of shipment shall be considered as the date
of calibration.
6.2.4.
Periodically In-house verification
Please refer to the corresponding standard before carrying out a calibration or verification. The standard
describes the procedure, the tolerances and the necessary auxiliary means. Suitable calibration adapters are
needed. To compare the verification results, EM Test suggests refer to the waveshape and values of the original
calibration certificate.
All calibrations and verifications are always done without mains supply voltage connected to the coupling network
input.

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7.
Delivery Groups
Identical accessory parts are delivered only once if several devices are ordered. The delivered packing list is in
each case valid for the delivery.
7.1.
Basic equipment and accessories
Coupling / decoupling network or Surge Protection Network as per list below
Manual for CNI 508 N2 Assembly on CD
7.1.1.
CNI 508 N2
CNI 508N2 Coupling/ decoupling network
1 HV cable Surge: 1 Meter HV Cable SHV to Banana
1 HV Cable Burst: 1 Meter HV Cable SHV to F-103A
1 Patch Cable : 0.5 Meter Cat.6 shielded red
1 Patch Cable : 0.5 Meter Cat.5 unshielded grey
Ground cable: 0.3 Meter yellow
1 piece lug for one end (one per assembly)
Fig 7.1
7.1.2.
SPN 508 N1
SPN 508 N1 Protection network
1 Patch Cable : 0.5 Meter Cat.7 shielded blue
1 Ground cable: 0.3 Meter yellow
1 piece lug for one end (one per assembly)
Fig 7.2

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Manual of operation V 1.02 16 / 20
8.
Appendix
8.1.
Declaration of CE-Conformity
Manufacturer :
EM TEST (Switzerland) GmbH
Address:
Sternenhofstr. 15
CH 4153 Reinach
Switzerland
Declares, that under is sole responsibility, the product’s listed below, including all their options, are conformity with
the applicable CE directives listed below using the relevant section of the following EC standards and other normative
documents.
Product‘s name:
Coupling Network
Model Number(s)
CNI 508 N2 , SPN 508 N1
Low Voltage Directive 2006/95/EC
Standard to which conformity is declared:
EN 61010-1 : 2006
Safety requirements for electrical equipment for measurement, control, and
laboratory use.
EMC Directive 2004/108/EG
Standard(s) to which conformity is declared:
EN 61326 : 2006
Electrical equipment for measurement, control and laboratoryuse Class A
EN 61000-3-2 : 2007
Limits for harmonic current emissions
EN 61000-3-3 : 2005
Limitation of voltage changes, voltage fluctuations and flicker in public low-
voltage supply systems.
European representative
Manufacturer
EM TEST GmbH
EM TEST (Switzerland) GmbH
Lünenerstr. 211
Sternenhofstr. 15
D 59174 Kamen
CH 4153 Reinach
Tel: [phone] / 26070-0
Tel: [phone]
Fax: [phone] / 17050
Fax: [phone]
By
U. Flor
General manager
A. Burger
Design and Research
Place
Kamen, Germany
Reinach BL , Switzerland
Date
16. November 2012
16. November 2012

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8.2.
Pin configuration at different systems
Wordwide the RJ 45 connector is used. Therefore some limits are given by the connector specification. Many
manufactures have no specification of the withstand voltages of the connectors in their datasheet. The maximum
Surge voltages are limited by the RJ45 connectors. Therefore the user can be limited depend on the coupling
mode of the surge test in relation to the used cables and connectors.
Voltages withstand
Contact - Contact : 500V ac 1 min
Contact - Shield : 1500V ac 1 min
Fig 8.1
There are different wiring configuration for datatransmission cables using RJ45 connectors. Table 8.1 shows the
most used pin configuration.
Table 8.1 Connector pin arrangement of RJ 45 for different applications

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8.3.
Transfer Characteristics CNI 508N2
The transfer function shows the characteristics of the cables, decoupling induction and connectors. The surge
coupling part was disconnected, cause this part will short the measurement.
Table 8.2 Transfer characteristics CNI 508N2 with Cat 6A

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8.4.
NE8FDY-C6 connector replacement
The connector NE8FDY-C6 from Neutrik has a lintime of > 1000 mating cycles and can be replaced by the user
himself. The attached pictures shows how to replace the connector.
Fig 8.2: Instruction RJ45 connector replacement

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Fig 8.3: Instruction RJ45 connector replacement