CONTENT Safety advice ........................4 1.1. General ..............................4 1.2. Applicable safety standards ........................4 1.3. Safety symbols used on the product ....................... 4 1.4. Installation ..............................4 1.5. Test execution ............................5 Unpacking, storage and transport ..................6 2.1. General ..............................
1. SAFETY ADVICE The coupling and decoupling networks (CDN) can work at dangerous voltages. WARNING: Improper or careless handling can be fatal! Use of the CDN is restricted to authorized and trained specialists 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-...
1.5. Test execution The test area must be organized so that no unauthorized persons have access during execution of a test. If a safety contact (interlock) is used as a means of access control to the test area (e.g. Faraday cage), then an additional contact in series with any hazardous voltages or currents is necessary to provide protection for parts of the EUT that are in danger of being touched.
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! ■...
3. DESCRIPTION OF THE PRODUCT 3.1. General he Coupling Decoupling Network CDN HSS-2 is designed for convenient surge testing with 1.2/50 μs pulses, as defined in IEC/EN 61000-4-5, on unshielded symmetrical high speed telecommunication lines e.g. Ethernet. Coupling modes to 1, 2 or 4 pairs are given and coupled with 40 Ω in series with a capacitive coupling element. The CDN HSS-2 allows testing on ISDN and Ethernet with 10/100BaseT and 1000BaseT as well. Power over Ethernet (PoE) is applicable. With a surge test voltage of 2 kV is the maximal residual voltage at the AE port only 65 V due to the excellent decoupling network. Additional decoupling elements are not required to protect the auxiliary equipment (AE).
3.3. Construction of the product Jumper for selecting the coupling path to the pair under test (not shown for the AE port) Surge input AE port (not shown) Ground plane of the CDN with notch for additional adjustment to the ground plane of the set-up Figure 2: CDN HSS-2 EUT port...
4. APPLICATION 4.1. Setup Each test setup should be carefully planned. All the equipment should be securely positioned, and all cables should be securely connected. Caution: The safety advice given in Section 1 and in the generator manual must be observed. The EUT and the wiring should be handled only when the generator is not active.
4.2. Coupling path to the pair under test (Jumper settings) The coupling path to the pair under test will be set by use of jumpers. It provides the correct 40 Ω in series with a capacitive coupling element to the selected lines under test. The following tables and figures provide examples with more precise details. PIN/RJ45 1 2 3 4 5 6 7 8 Jumper EIA/TIA 568B EIA/TIA 568A Table 1: Relation between RJ45 pin arrange- Figure 6: RJ45 pin arrangement 1 2 3 4 5 6 ment, jumper settings and EIA/TIA specifications...
4.3. Power over Ethernet (PoE) The CDN HSS-2 allows the use of the Power over Ethernet (PoE) function. In case the handshake procedure fails, all jumpers needs to be removed from the CDN HSS-2. The jumpers need to be replaced after establishment of a successful PoE connection for proceeding the surge testing. 4.4. One pair (two lines) application with DC and LF All applications with coupling to one pair (two lines) only allowed with absence of DC and low frequency signals below 10 KHz. The signals will be shorted by the internal Z-chokes of the CDN HSS-2. Teseq recommends the us of CDN 118 for this application, even 10/700 μs pulses with up to 6 kV can be applied.
Figure 13: Typical voltage waveform 5.2. Current The AE- and EUT-side of the CDN HSS-2 need to be connected in the common mode for the requested applica- tion. An oscilloscope with a 50 Ω input is connected with a suitable current probe. The AE- and EUT-side of the CDN HSS-2 is shorted. Between the common mode adapter inserted in the EUT-side of the CDN HSS-2 and ground is placed the current probe for measuring the short cut. The pulse connections from the surge generator is plugged into the HV socket of the CDN HSS-2. The jumper setting for selecting the coupling path is required in relation to the application. SURGE GENERATOR NSG 3040 Power on...
Figure 15: Typical current waveform 6. TECHNICAL SPECIFICATION 6.1. Technical specifications of CDN HSS-2 Circuit diagram: according to Fig. 11 of IEC 61000-4-5 Edition 3 Max. surge test voltage: 2 kV* (1.2/50 µs pulse as per IEC/EN 61000-4-5) Max. surge test current: 50 A (8/20 µs pulse as per IEC/EN 61000-4-5) Coupling mode: Common mode to 1, 2 or 4 pairs with respect to CDN chassis Coupling elements: 40 Ω in series with capacitive coupling elements Max. residual test voltage at AE port: 65 V (at 2 kV surge test voltage) Surge input connector: HV connector female (Fischer D103A023) Applications: ISDN, 10/100BaseT, 1000BaseT etc., switchable per jumper, PoE applicable Cable type: 8 wire unshielded twisted pair (UTP) Insertion loss, typical: 9 dB at 100 MHz Other typical network limits: TIA-568-A Category 5-TSB95 Link Max. operating speed: 1000BaseT Max. operating voltage:...
7. MAINTENANCE 7.1. General The CDNs including the accessories need no special maintenance. The maintenance is limited to the cleaning of the contacts. The life time of the connectors is limited because of the contact durability. Teseq can replace the worn out connectors and offers a general adjustment of CDNs with adapters which might be necessary. No modifications are to be carried out on CDNs and accessories by the user. It is recommended to send the units to a Teseq Service Centre once a year for recalibration. 7.2.
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