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RF Performance Fails

If the U3042AM04 operates correctly, but RF performance fails the Signal Path test

efer to the

to determine the components

that will need to be inspected further. The following procedures can be used to
isolate the failed component. Suspect the internal coax switches, RF cables, or
coupler.

The RF performance of the

U3042AM04

depends on the performance of the analyzer.

Ensure the analyzer is meeting specification before continuing.

Verify that the test set and analyzer SOURCE, RCVR, CPLR THRU, and CPLR ARM
connectors are clean and that the center pins are not damaged.

Verify the interface and internal RF cables are cleaned and not damaged.

“Verifying Cal Kit Operational Check Failure” on page

Table 2

U3042AM04

Service Information

Connect the RF Flex cables to the Source IN and CPLR THRU port indicated in

Table

the expected results should be similar to

Figure

on page

Source Bypass Signal Path Test Instructions

Path

Test Port
Group

RF Path Description

Control Mode
<Address>.<Data>

Path
Components

Port 5

Source IN to CPLR THRU

0.0

S10

Port 6

Source IN to CPLR THRU

16.0

S20

Port 7

Source IN to CPLR THRU

32.0

S30

Port 8

Source IN to CPLR THRU

64.0

S40

Table 2

Connect the RF Flex cables to the Source IN and CPLR ARM port indicated in

Table 2

the expected results should be similar to

Figure

on page

Receiver Bypass Signal Path Test Instructions

Path

Test Port
Group

RF Path Description

Control Mode
<Address>.<Data>

Path
Components

Port 5

RCVR OUT to CPLR ARM

0.0

S11

Port 6

RCVR OUT to CPLR ARM

16.0

S21

Port 7

RCVR OUT to CPLR ARM

32.0

S31

Port 8

RCVR OUT to CPLR ARM

64.0

S41

Keysight U3042AM04 User's and Service Guide

Содержание U3042AM04

Страница 1: ...s document contains references to Agilent Please note that Agilent s Test and Measurement business has become Keysight Technologies For more information go to www keysight com Use this manual with the...

Страница 2: ...ware to U S government customers under its standard commercial license which is embodied in its End User License Agreement EULA a copy of which can be found at http www keysight com find sweula The li...

Страница 3: ...d Cooling 6 Required Conditions for Accuracy Enhanced Measurement 6 Dimensions and Space Requirements 6 Maximum and Recommended Power Levels 7 Typical Reflection Tracking 8 Front and Rear Panel Featur...

Страница 4: ...cessor 37 SCPI Command Processor Console 39 Address and Data Values 40 Setting the Test Ports Paths with Address and Data 40 Control Lines 42 Internal Voltage Supply Configuration 44 External Voltage...

Страница 5: ...Set and RF Switching Path Test 66 Equipment Required 66 Equipment Setup 66 Cable Connections 67 Source Signal Path Insertion Loss Test 67 RF Performance Fails 70 Troubleshooting Diagrams and Tables 7...

Страница 6: ...Contents 4 Table of Contents Contacting Keysight 79 Shipping Your Product to Keysight for Service or Repair 79...

Страница 7: ...U3042AM04 User s and Service Guide U3042AM04...

Страница 8: ...n Introduction This document describes how to use and service the U3042AM04 Multiport Test Set Figure 1 4 Port PNA L with U3042AM04 Figure 2 4 Port PNA or PNA X with U3042AM04 1 Keysight U3042AM04 Use...

Страница 9: ...tion technique Low insertion loss measurements exhibiting a 0 1 dB uncertainty ripple residing on the measurement response is not uncommon Switch Configuration Command Speed When writing address and d...

Страница 10: ...l frequency range of the test set The Test Set files indicated in Table 2 must be installed into this network analyzer file directory location c Program Files Keysight Network Analyzer testsets Networ...

Страница 11: ...etwork Analyzer Interface Kit Options Table 3 The U3042AM04 will require one of the following kits to interface the test set with your network analyzer The Interface kit model option includes the hard...

Страница 12: ...earthing ground incorporated in the power cord The mains plug shall be only be inserted in a socket outlet provided with a protective earth contact Any interruption of the protective conductor inside...

Страница 13: ...erating temperature of the instrument by 4 C for every 100 watts dissipated in the cabinet If the total power dissipated in the cabinet is greater than 800 watts forced convection must be used Require...

Страница 14: ...Refer to your analyzer s specifications to determine the maximum input power levels for the access and test ports or to optimize the power levels in the receivers Damage and maximum levels are not nec...

Страница 15: ...s See Table 6 and Table 7 Table 6 Typical Reflection Tracking with PNA L Frequency Standard 700 300 kHz to 10 MHz 0 2 10 MHz to 4 GHz 3 4 GHz to 6 GHz 4 6 GHz to 10 5 GHz 5 10 5 GHz to 13 5 GHz 6 13 5...

Страница 16: ...LED indicates an active port in Source or Receiver mode On the front panel S indicates Source test ports and R indicates Receiver test ports Note that this switch is Standby only not a line switch The...

Страница 17: ...est Set to a conductive object cabinet or structure to ensure a common potential and reduce leakage current in a system Requires an English 1 4 20 thread nut 2950 0004 and lock washer 2190 0067 The Pa...

Страница 18: ...before other parts of the instrument The front panel switch is only a standby switch and is not a LINE switch Alternatively an externally installed switch or circuit breaker which is readily identifi...

Страница 19: ...nstrument from all voltage sources before being opened Locking the Test Set to the PNA L 1 The kit U3021 60001 includes items to interface the Test Set to the analyzer 2 Remove the feet from the botto...

Страница 20: ...e standoffs were removed Install Locking Feet 5 Remove the top two standoffs and screws 0515 1619 from the rear panel on the Test Set 6 Install the top left and right rear locking feet from the kit 50...

Страница 21: ...feet loosen the screws securing the feet to the instrument slightly to align and tighten Figure 9 Locking the Analyzer Figure 10 Locking Feet Screws The lock feet kit U3021 60001 includes the analyze...

Страница 22: ...rom the PNA L to the Test Set Torque each cable to 8 in lb The Z5623 20418 are the short cables and the Z5623 20419 are the long cables Refer to Table 8 and Figure 11 Each end of the interconnect RF c...

Страница 23: ...cable N4011 21002 from the PNA L Test Set I O to the Test Set I O interface connector on the rear panel of the Test Set Refer to Figure 18 on page 21 Refer to System Operational Checks on page 22 for...

Страница 24: ...all voltage sources before being opened Locking the Test Set to the PNA or PNA X 1 The kit U3021 60002 includes items to interface the Test Set to the analyzer 2 Remove the feet from the bottom of th...

Страница 25: ...ffs and screws 0515 1619 from the rear panel on the Test Set 6 Install the two rear locking feet onto the Test Set Looking at the front panel the N5242 20138 is the right foot and the N5242 20139 is t...

Страница 26: ...en the screws securing the feet to the instrument slightly to align and tighten Figure 15 Locking the Analyzer s Figure 16 Locking Feet Screws The lock feet kit U3021 60002 includes the analyzer and T...

Страница 27: ...ecome loose Table 9 PNA or PNA X RF Interface Cable Connection U3021 60047 Numeric Order RF Cables From PNA X To Test Set 1 U3042 20031 Port 1 SOURCE OUT Port 5 SOURCE IN 2 U3042 20032 Port 1 CPLR THR...

Страница 28: ...ected in the numeric order listed in Table 9 on page 20 PNA X RF Interface Cable Connections 3 Connect the analyzer Test Set I O cable N4011 21002 to the Test Set Interface Figure 18 connector on the...

Страница 29: ...alyzer and make the following settings Set to Multi Port Mode Frequency range 10 MHz to 26 5 GHz IFBW 1 kHz Scale 10 dB Div Set the PNA to measure S11 Ensure the RF path of the analyzer is in Default...

Страница 30: ...Mechanical Switches Port 3 2 C A RCVR C IN Port 1 CPLR THRU SOURCE OUT RCVR A IN CPLR ARM Port 2 4 B D CPLR THRU SOURCE OUT RCVR B IN CPLR ARM Port 4 3 CPLR THRU SOURCE OUT RCVR D IN CPLR ARM Keysigh...

Страница 31: ...E OUT RCVR B IN CPLR ARM Port 4 3 CPLR THRU SOURCE OUT RCVR D IN CPLR ARM Keysight 4 Port PNA NOTE PNA PNA X Port orientation is shown PNA L RF interconnections are the same PNA L CPLR THRU SOURCE OUT...

Страница 32: ...Control on page 37 Typeface Key Conventions The following key conventions are used throughout this document HARDKEYS are labeled front panel keys SOFTKEYS are indicated on the instrument display Ital...

Страница 33: ...Utility System Configure Multiport Capability OR Instrument Setup External Hardware Multiport Multiport Configuration 2 Select U3042AM04 4 Port System from the test set drop down menu and select Rest...

Страница 34: ...menu will allow the physical Ports 1 thru 12 to be identified as any port for your convenience For example Port 5 can be re named Port 2 The External Test Set Control U3042AM04 also allows control of...

Страница 35: ...tes the port is the Receiver and the S LED indicates the port is the Source The B model analyzer provides an S Parameter selection method using the keypad For example to select S25 MEAS MEAS Enter S P...

Страница 36: ...ntial component measurement search for Application Note 1373 1 and 1373 2 5988 5634EN and 5988 5635EN at http www keysight com Selecting Balanced Measurements Receivers Tab Figure 29 The S Parameter m...

Страница 37: ...re RF Path Config and in the drop down menu select Default OK Save this configuration as a User Preset by selecting Save User Preset Save current state as User Preset Do not use the factory Preset Use...

Страница 38: ...the DUT This removes the effect on the measurement of the DUT Failure to do this will create ripple and other measurement errors Refer to ECal User Characterization If measurement errors occur ensure...

Страница 39: ...orts you are calibrating following the Cal Wizard prompts and click Measure after each connection 5 At the Calibration Completed prompt select Save As User Calset and enter the name desired and Save 6...

Страница 40: ...ry I O without needing to create a remote program Refer to Help menu Rear Panel Tour A unique set of control data can be sent for each channel In addition a unique set of control data can be sent befo...

Страница 41: ...nternalHardware InterfaceControl in the drop down menu and select EnableInterfaceControl The network analyzer comes with the Interface Control application Please review this application before connect...

Страница 42: ...ace Control is disabled and NO data is sent To send data the individual interfaces must also be enabled Provides control of the Test Set I O Interface on the rear panel of the analyzer Used to control...

Страница 43: ...the channel begins sweeping The After Sweep Start data is sent after the last trace on the channel sweep is completed Specifies a wait time in milliseconds after all commands to all interfaces are sen...

Страница 44: ...et without needing to create a remote program The user is required to manually input address and data using the Command Processor Console in the PNA Help menu Command Processor settings can not be sav...

Страница 45: ...Figure 36 U3042AM04 Controlling the Test Set with N5222 32 42A B Command Console for B Model Analyzers Keysight U3042AM04 User s and Service Guide 38...

Страница 46: ...nnector by sending the following address a integer number data a integer number Refer to Address and Data Values on page 40 Figure 37 Address and data are separated by a comma Commands should be separ...

Страница 47: ...ss 32 data 1 and Receiver Port 8 address 64 data 16 Two separate commands must to be sent you may use the same dialog box Send address 32 and data 1 in one command line and address 64 and data 16 in t...

Страница 48: ...ort 4 3 CPLR THRU SOURCE OUT RCVR D IN CPLR ARM Keysight 4 Port PNA NOTE PNA PNA X Port orientation is shown PNA L RF interconnections are the same PNA L Port 7 Port 8 SOURCE SIGNAL RCVR SIGNAL S30 S3...

Страница 49: ...e source 2 to 5 Vdc or an external DC power supply depending on how the connection to the control line is configured When using an external power supply a positive or negative voltage can be used Refe...

Страница 50: ...r pin 14 5 Line 5 Control Line Output of the voltage from pin 13 or pin 14 6 Line 6 Control Line Output of the voltage from pin 13 or pin 14 7 Line 7 Control Line Output of the voltage from pin 13 or...

Страница 51: ...strates an example of the connection between the DUT and the test set without an external DC power supply Connect pin 12 to pin 13 for 5 V and pin 14 to pin 15 to provide the ground path Connect each...

Страница 52: ...ning On the Test Set using an External Power Supply 1 Turn on the test set 2 Connect the DUT 3 Turn on the external power supply Turning Off the Test Set using an External Power Supply 1 Turn off the...

Страница 53: ...is always 112 Table 14 Test Set DUT Control Address and Data Logic Table Address Data Description Line Pin 112 0 ALL DUT Control Lines set to logic high or connected to Pin 13 1 8 112 255 ALL DUT Cont...

Страница 54: ...ir data values Listed are two examples to illustrate this concept Refer to Figure 39 on page 43 shown with all lines logic high To change lines 1 8 to equal logic Low all others logic high 1 Line 1 ad...

Страница 55: ...This section provides an equipment list and setup of the analyzer and test set Table 15 Equipment List Description Qty N4691A 3 5 mm ECal Module 10 MHz 26 5 GHz Option 00F or M0F or N4691B 3 5 mm ECal...

Страница 56: ...you suspect that your 8 Port configuration is not operating properly ensure that all front RF jumper interconnect cables are correctly attached Table 16 Reflection Tracking with PNA La a Reflection Tr...

Страница 57: ...Verify that the analyzer is in Multiport mode See the bottom of the measurement window a If only four S Parameters are listed select Utility System Configure Multiport Capability OR Instrument Setup...

Страница 58: ...tinue following the Cal Wizard prompts In the Select Calibration Ports and ECal Module dialog box click Clear All then select Port 1 Next Measure 4 Ensure the Cal Kit you are using is indicated on the...

Страница 59: ...traces on the screen 9 To launch the Cal Set Viewer toolbar Select Response Cal Manage Cals Cal Set Viewer OR Response Cal Cal Sets Cal Kits Cal Set Viewer On Off Figure 44 Calibration Cal Set Viewer...

Страница 60: ...4 PNA L Port 1 8 Figure 46 Reflection Tracking Ports 5 to 8 with PNA or PNA X Response from 10 MHz to 500 MHz is normal due to the PNA or PNA X Couplers in comparison to the test set bridges The brid...

Страница 61: ...check the accuracy of a 1 Port calibration performed with mechanical standards or an ECal module In order to perform this check the test port of the ECal module must connect directly to the test port...

Страница 62: ...tion 1 Perform the System Operational Checks on page 22 2 If the problem still exists perform the RF Switching Failures on page 65 If a power hole or other failure still exists refer to Contacting Key...

Страница 63: ...cing unless you are qualified to do so Replaceable Parts The following replaceable parts are available from Keysight Technologies Find A Part system on the web at http www keysight com my faces fapHom...

Страница 64: ...C IN RF Cable Semi Rigid U3042 20034 Port 3 CPLR THRU RF Cable Semi Rigid U3042 20036 Port 4 CPLR ARM RF Cable Semi Rigid U3042 20037 Port 4 RCVR D IN RF Cable Semi Rigid U3042 20038 Port 4 SOURCE OUT...

Страница 65: ...Port 4 3 CPLR THRU SOURCE OUT RCVR D IN CPLR ARM Keysight 4 Port PNA NOTE PNA PNA X Port orientation is shown PNA L RF interconnections are the same PNA L CPLR THRU SOURCE OUT CPLR ARM Port 5 Port 6...

Страница 66: ...CB6 Ports 7 LED Frt Pnl PCB5 Ports 6 LED Frt Pnl PCB4 Ports 5 LED Frt Pnl S21 S30 S31 S41 P11 P20 P21 P30 P31 P41 Front Panel Active 9 10 Vdc N C Signal Path Name Test Set Port Group Ext Control Bd 3...

Страница 67: ...Board and provides connections to the RF switches This board regulates the DC voltage supply 24 volts and routes logic signals to the switches Front Panel LED Boards Four LED board assemblies N5261 60...

Страница 68: ...nnect cables to the test set Source and Receiver Switch Paths Refer to the System Block Diagram Figure 48 on page 58 for source and receiver switch path details Test Set Control Board The Test Set Con...

Страница 69: ...Line voltage checks remove AC power from the instrument a Ensure the proper AC Line voltage is present at the instrument line cord b Remove the AC power cord from the instrument Confirm the instrumen...

Страница 70: ...e power supply label to identify the terminal voltage values e If all of the DC Input LEDs are On and the fan is not working replace fan f Using a DVM confirm that the RF Switch power regulator output...

Страница 71: ...t the control voltage pin connections to the DUT control lines are connected properly Refer to Control Lines on page 42 b Verify that the rear panel DC voltage control adjustment can be set to 5 Vdc R...

Страница 72: ...loaded into the analyzer Refer to Network Analyzer Requirements on page 3 3 Using the I O command values confirm that the correct address and data values are used Refer to Address and Data Values on...

Страница 73: ...the test set PNA PNA L or PNA X Network Analyzer Two RF Flex Cables 3 5 mm male 3 5 mm Adapters female to female Test Set I O Cable Equipment Setup 1 Turn on the test set and the analyzer 2 Preset the...

Страница 74: ...re 53 on page 68 Table 21 Source Signal Path Insertion Loss Test Connect the RF Flex cables to the Test Port and Source IN port indicated in Table 21 The expected results should be similar to Figure 5...

Страница 75: ...rvice Information Figure 51 Source IN to Ports 5 8 Path Response Figure 52 RCVR OUT to Ports 5 8 Path Response Figure 53 Source Receiver Bypass Signal Path Response Keysight U3042AM04 User s and Servi...

Страница 76: ...th Description Control Mode Address Data Path Components Insertion Loss typical 1 RCVR OUT to Ports 51 1 Use the RCVR OUT port associated with this group of test ports 0 16 P5 CPLR S11 Figure 52 on pa...

Страница 77: ...23 U3042AM04 Service Information Connect the RF Flex cables to the Source IN and CPLR THRU port indicated in Table23 the expected results should be similar to Figure 53 on page 68 Source Bypass Signa...

Страница 78: ...ness Active LED P1 Active LED DUT Control Ribbon Cable J9 DUT Controller Board Power Supply Wire Harness J11 14 Power Supply Table 26 Switch Interface Board Switch Interface Board Connection Switch In...

Страница 79: ...gure 55 Bottom View Power Supply LEDs 11 10 21 31 DUT Control Bd Switch Interface Bd 41 40 16 20 Coax Switch x8 Fuse x2 Fan Power Supply Line Module 11 21 31 41 10 20 30 40 Keysight U3042AM04 User s a...

Страница 80: ...tective earth contact Any interruption of the protective conductor inside or outside of the product is likely to make the product dangerous Intentional interruption is prohibited Always use the three...

Страница 81: ...ied with this product Failure to ensure adequate earth grounding by not using this cord may cause product damage and the risk of electrical shock This product is designed for use in Installation Categ...

Страница 82: ...serviceable parts inside Refer servicing to qualified personnel To prevent electrical shock do not remove covers The detachable power cord is the instrument disconnecting device It disconnects the ma...

Страница 83: ...f flammable cleaning materials are used the material shall not be stored or left open in the area of the equipment Adequate ventilation shall be assured to prevent the combustion of fumes or vapors Ke...

Страница 84: ...emark of the European Community The Keysight email address is required by EU directives applicable to our product The CSA mark is a registered trademark of the CSA International This is a symbol of an...

Страница 85: ...61010 1 3rd Edition Acoustic statement European Machinery Directive 2022 42 EC 1 7 4 2U Accoustical noise emission LpA 70 dB Operator position Normal operation mode Per ISO 7779 EMI and EMC Complianc...

Страница 86: ...can determine the warranty status of your unit Shipping Your Product to Keysight for Service or Repair IMPORTANT Keysight Technologies reserves the right to reformat or replace the internal hard disk...

Страница 87: ...Keysight U3042AM04 User s and Service Guide 80...

Страница 88: ...This information is subject to change without notice Keysight Technologies 2013 2018 Edition 1 February 2018 Supersedes April 2017 www keysight com...

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