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Rohde & Schwarz ESH3-Z6, Manual

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Rohde & Schwarz ESH3-Z6 Manual Download Page 19

Service

R&S

®

ESH3-Z6

19

Manual 1178.9932.02 ─ 01

1

1.5

2

100 

kHz

150 

kHz

100 

MHz

200 

MHz

[dB]

Figure 5-7: Limits for voltage division factor X2 - X3

5.2.5

 

Reflection VSWR of X3

Test equipment

●

Vector network analyzer

●

BNC 50 

Ω

 terminator

●

2x adapter Xn - BNC-F

Preparing the EUT

1.

DANGER! 

Do not connect the R&S

 

ESH3-Z6 to mains voltage for the test. Con-

necting the R&S

 

ESH3-Z6 to the mains voltage poses hazardous or even life-

threatening risks to the operator.
Arrange the test setup as shown in 

Fig. 5

.

2. Install the Xn - BNC-F adapter on X1 and X2 connectors.

3. Tighten the torque of M8 nuts: 8

 

Nm to 10

 

Nm.

4. Connect the BNC 50

 Ω

 termination to the BNC adapter installed on X2.

5. Connect the Port 1 to the X3 connector.

VNA

Port 1

Port 2

Short

R&S ESH3-Z6

X2.1
X2.2

X1.1
X1.2

X3

50  

Figure 5-8: Test setup for VSWR of X3

Perfomance Test

Summary of Contents for ESH3-Z6

Page 1: ...R S ESH3 Z6 V Network 5µH 50 Ω Manual Manual Version 01 1178993202 ÜñP2 ...

Page 2: ...chwarz com Internet www rohde schwarz com Subject to change Data without tolerance limits is not binding R S is a registered trademark of Rohde Schwarz GmbH Co KG Trade names are trademarks of their owners 1178 9932 02 Version 01 R S ESH3 Z6 Throughout this manual products from Rohde Schwarz are indicated without the symbol e g R S ESH3 Z6 is indicated as R S ESH3 Z6 ...

Page 3: ... the LISN does not have a fuse in the measuring circuit Burns and fire hazard caused by overheating of the housing Overheating can occur if the ventilation is insufficient or if the cables cross section is too small These users also need sound knowledge of at least one of the languages in which the user interfaces and the product documentation are available If any part of the LISN is damaged or br...

Page 4: ...rt of the installation process Protective ground connection Always establish a protective ground connection before connecting the LISN to a power source A protective ground protects you from electrically live parts on the casing caused by high leakage currents High leakage currents can cause electric shock serious per sonal injury or death if you touch the casing Ground cables must have a sufficie...

Page 5: ...datasheet Ensure that you can disconnect the product from the power source at any time Pull the power plug to disconnect the product The power plug must be easily accessible If the product is integrated into a system that does not meet these requirements provide an easily accessible circuit breaker at the system level If the LISN has an auxiliary voltage Before taking the LISN auxiliary voltage in...

Page 6: ...e product Carrying the product requires at least two people or transport equipment Electrical hazard Indicates live parts Risk of electric shock fire personal injury or even death Hot surface Do not touch Risk of skin burns Risk of fire Protective conductor terminal Connect this terminal to a grounded external conductor or to protective ground This protects you against electric shock should an ele...

Page 7: ... voltage Provide a standardized load impedance Isolate the test circuit from power supply disturbances Deliver unsymmetric disturbance voltage generated by the EUT to the test receiver in a defined manner The R S ESH3 Z6 in particular is a single phase V network that corresponds to a 5 µH inductor It complies to the requirements specified in CISPR 25 Unpacking the R S ESH3 Z6 1 Carefully remove th...

Page 8: ...2 02 01 3 Instrument Tour 1 3 2 4 5 Figure 3 1 Front view labeled To Equipment Under Test 1 Ground terminal X2 2 2 Safety cap 3 Power connector X2 1 for EUT 4 RF output to test receiver 5 Ground plate contains 2 notches for ground cable connection ...

Page 9: ...ESH3 Z6 9 Manual 1178 9932 02 01 1 3 2 4 Figure 3 2 Rear view labeled To Power Source 1 Ground terminal X1 2 2 Safety cap 3 Power connector X1 1 to power source 4 Ground plate contains 2 notches for ground cable connection ...

Page 10: ... from X1 1 to X2 1 Therefore the ground terminals may only be used as a return line if the EUT and its generator use reference ground as a return line for example in case of low voltage net works If the supply lines are isolated from the reference ground you have to feed each line into a separate R S ESH3 Z6 as shown in Figure 4 1 In that case you have to connect both V networks to a protective gr...

Page 11: ...f electric shock Always disconnect the R S ESH3 Z6 from the power source before disconnecting it from anything else especially the protective ground An unearthed R S ESH3 Z6 is live Touching a live electrical device cau ses serious personal injury or even death The protective ground connection must remain until you have disconnected the V network from the power supply Disocnnect the R S ESH3 Z6 fr...

Page 12: ...input impedance of 50 Ω Attenuation between X2 and X3 is high in the lower frequency range which is due to the impedance Z of the V network and the highpass filter action of C2 The source impedance at X2 is 50 Ω for this measurement Attenuation measurements according to Chapter 5 2 4 Voltage Division Factor VDF X2 X3 on page 17 therefore only serve to check for proper operation of the R S ESH3 Z6 ...

Page 13: ...ormally used in industry 2 pcs Termination 50 Ω 50 Ω 1 W BNC M 3631 0771 00 2 pcs T branch 50 Ω BNC F Type normally used in industry Short termination BNC Short termination BNC M Type normally used in industry Power supply cable Power supply cable with M8 lug and reference voltage conductor Current conductor S 2 5 mm2 Voltage reference conductor S 0 75 mm2 2 pcs 5 2 Perfomance Test GND PE Resistan...

Page 14: ... nuts 8 Nm to 10 Nm 4 Turn on the DC power supply DC power supply DMM R S ESH3 Z6 X2 1 X2 2 X1 1 X1 2 X3 Power in RF out Power out Figure 5 2 Test setup for GND resistance check Performing the test Read out the voltage of the PE conductor on the digital multimeter The GND PE resistance must be 6 mΩ Note Calculate the GND PE resistance from the voltage drop at the test current 5 2 2 Power Conductor...

Page 15: ... conductor on the digital multimeter The power conductor resistance must be 6 mΩ Note Calculate the power conductor resistance from the voltage drop at the test current 5 2 3 Impedance measurement X2 CISPR 25 Ed 4 2016 Test equipment Vector network analyzer BNC 50 Ω terminator 2x adapter Xn BNC F Preparing the EUT 1 DANGER Do not connect the R S ESH3 Z6 to mains voltage for the test Con necting th...

Page 16: ...to CISPR 25 edition 4 2016 the deviation from the impedance shown in Table 5 1 must be 20 in frequency range 100 kHz to 100 MHz Table 5 1 Impedance limits Frequency Impedance Low limit Upper limit 0 10 MHz 3 20 Ω 2 56 Ω 3 84 Ω 0 15 MHz 4 79 Ω 3 83 Ω 5 75 Ω 0 20 MHz 6 37 Ω 5 09 Ω 7 64 Ω 0 30 MHz 9 45 Ω 7 56 Ω 11 34 Ω 0 40 MHz 12 41 Ω 9 93 Ω 14 89 Ω 0 50 MHz 15 23 Ω 12 18 Ω 18 27 Ω 0 70 MHz 20 34 Ω ...

Page 17: ...16 5 2 4 Voltage Division Factor VDF X2 X3 Test equipment Vector network analyzer 2x BNC 10 dB attenuator BNC T Branch BNC 50 Ω terminator 2x adapter Xn BNC F Preparing the EUT part 1 1 DANGER Do not connect the R S ESH3 Z6 to mains voltage for the test Con necting the R S ESH3 Z6 to the mains voltage poses hazardous or even life threatening risks to the operator Arrange the test setup as shown in...

Page 18: ...fe threatening risks to the operator Arrange the test set up as shown in Figure 5 6 2 Connect the Port 2 through the BNC 10 dB attenuator to the X3 connector 3 Connect the BNC 50 Ω termination to the BNC T Branch input VNA Port 1 Port 2 10 dB 50 Short R S ESH3 Z6 X2 1 X2 2 X1 1 X1 2 X3 10 dB Figure 5 6 Test setup 1 for voltage division factor X2 X3 Performing the test part 2 Read out the voltage d...

Page 19: ...o mains voltage for the test Con necting the R S ESH3 Z6 to the mains voltage poses hazardous or even life threatening risks to the operator Arrange the test setup as shown in Fig 5 2 Install the Xn BNC F adapter on X1 and X2 connectors 3 Tighten the torque of M8 nuts 8 Nm to 10 Nm 4 Connect the BNC 50 Ω termination to the BNC adapter installed on X2 5 Connect the Port 1 to the X3 connector VNA Po...

Page 20: ... decreasing with logarithm of frequency 10 MHz to 100 MHz 18 dB 100 MHz to 200 MHz 18 dB to 15 dB linearily increasing with logarithm of frequency 18 15 2 1 MHz 10 MHz 100 MHz 200 MHz dB Figure 5 9 Limits for VSWR of X3 5 3 Repair Although the V network R S ESH3 Z6 has no active components the DC resistances of current path X1 1 X2 1 can deteriorate due to overIoading corrosion or mechanical defor...

Page 21: ...Circuit Diagram R S ESH3 Z6 21 Manual 1178 9932 02 01 6 Circuit Diagram Figure 6 1 Circuit diagram for the R S ESH3 Z6 ...

Page 22: ... and upgrades To keep your instrument up to date and to be informed about new application notes related to your instrument please send an e mail to the Customer Support Center stat ing your instrument and your wish We will make sure that you get the right information Europe Africa Middle East Phone 49 89 4129 12345 customersupport rohde schwarz com North America Phone 1 888 TEST RSA 1 888 837 8772...

Page 23: ...ows cannot be disposed of in normal household waste after it has come to the end of its service life Even disposal via the municipal collection points for waste electrical and electronic equipment is not permitted Figure 8 1 Labeling in line with EN 50419 Rohde Schwarz has developed a disposal concept for the ecofriendly disposal or recycling of waste material As a manufacturer Rohde Schwarz compl...

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