Anritsu MU182020A Operation Manual
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Anritsu MU182020A Operation Manual

Anritsu MU182020A Operation Manual

25 gbit/s 1ch/2ch mux
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  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 MU182020A 25 Gbit/s 1ch MUX MU182021A 25 Gbit/s 2ch MUX Operation Manual Eighth Edition • For safety and warning information, please read this manual before attempting to use the equipment. • Additional safety and warning information is provided in the MP1800A Signal Quality Analyzer Installation Guide and the MT1810A 4 Slot Chassis Installation Guide.
  • Page 3 Ensure that you clearly understand the meanings of the symbols BEFORE using the equipment. Some or all of the following symbols may be used on all Anritsu equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.
  • Page 4 In addition, this warranty is valid only for the original equipment purchaser. It is not transferable if the equipment is resold. Anritsu Corporation shall assume no liability for injury or financial loss of the customer due to the use of or a failure to be able to use this equipment.
  • Page 5 Anritsu Corporation Contact In the event of this equipment malfunctions, contact an Anritsu Service and Sales office. Contact information can be found on the last page of the printed version of this manual, and is available in a separate file on the CD version.
  • Page 6 Notes On Export Management This product and its manuals may require an Export License/Approval by the Government of the product's country of origin for re-export from your country. Before re-exporting the product or manuals, please contact us to confirm whether they are export-controlled items or not. When you dispose of export-controlled items, the products/manuals need to be broken/shredded so as not to be unlawfully used for military purpose.
  • Page 7 Anritsu electronic equipment). By reading this EULA and using this software, you are agreeing to be bound by the terms of its contents and Anritsu Corporation (hereafter Anritsu) hereby grants you the right to use this Software with the Anritsu-specified equipment (hereafter Equipment) for the purposes set out in this EULA.
  • Page 8 Commerce Denied Persons List or Entity otherwise, due to your violation of the terms List. By using this Software, you warrant of this EULA, Anritsu shall have the right to that you are not located in any such country seek proportional damages from you.
  • Page 9 MU182021A 25 Gbit/s 2ch MUX 2. Applied Directive and Standards When the MU182020A 25 Gbit/s 1ch MUX or MU182021A 25 Gbit/s 2ch MUX is installed in the MP1800A or MT1810A, the applied directive and standards of this unit conform to those of the MP1800A or MT1810A main frame.
  • Page 10 MU182021A 25 Gbit/s 2ch MUX 2. Applied Directive and Standards When the MU182020A 25 Gbit/s 1ch MUX or MU182021A 25 Gbit/s 2ch MUX is installed in the MP1800A or MT1810A, the applied directive and standards of this unit conform to those of the MP1800A or MT1810A main frame.

  • Page 12: About This Manual

    Operation manual for the module. Module Operation Manual varies depending on the module(s) used. MU182020A 25 Gbit/s 1ch MU182021A 25 Gbit/s 2ch MUX Operation Manual Describes how the MU182020/21A is configured as well as how to operate and maintain it.

  • Page 13: Table Of Contents

    Table of Contents About This Manual........Chapter 1 Overview........Product Overview............Product Composition............. Specifications..............Chapter 2 Preparation before Use .... Installation to Signal Quality Analyzer ......How to Operate Application .......... Preventing Damage ............Chapter 3 Panel Layout and Connectors . Panel Layout ..............
  • Page 14 Chapter 6 Performance Test ..... Overview ............... Devices Required for Performance Tests..... Performance Test Items..........Chapter 7 Maintenance ......Daily Maintenance ............Cautions on Storage ............. Transportation............... Calibration..............Disposal ................ Chapter 8 Troubleshooting ....... Problems Discovered during Module Replacement ..Problems Discovered during Output Waveform Observation..............

  • Page 16: Chapter 1 Overview

    Chapter 1 Overview This chapter provides an overview of the MU182020A 25 Gbit/s 1ch MUX and MU182021A 25 Gbit/s 2ch MUX (hereinafter, referred to as “MU182020A/21A”). Product Overview ............1-2 Product Composition ..........1-3 1.2.1 Standard composition........1-3 1.2.2 Options ............1-4 1.2.3 Application parts ..........

  • Page 17: Product Overview

    Chapter 1 Overview 1.1 Product Overview The MU182020A/21A is a plug-in module that can be built into a Signal Quality Analyzer mainframe. This equipment 2:1 multiplexes the output signal of the MU181020A 12.5 Gbit/s and MU181020B 14 Gbit/s pulse pattern generators (hereafter MU181020A/B) to generate 8 to 25 Gbit/s PRBS, DATA and Zero-Substitution patterns.

  • Page 18: Product Composition

    Product Composition 1.2 Product Composition 1.2.1 Standard composition Table 1.2.1-1 and Table 1.2.1-2 show the standard composition for the MU182020A/21A. Table 1.2.1-1 Standard composition for MU182020A Model Item Product name Q’ty Remarks name/symbol Mainframe MU182020A 25 Gbit/s 1ch MUX J1137...

  • Page 19: Options

    Chapter 1 Overview 1.2.2 Options Table 1.2.2-1 and Table 1.2.2-2 show the options for the MU182020A/21A. Table 1.2.2-3 and Table 1.2.2-4 show the accessories for the MU182020A/21A. All options are sold separately. Table 1.2.2-1 Options for MU182020A Model name Product name...
  • Page 20 Product Composition Notice of MU182020A/21A-x03 option name indication Option name of MU182020A-x01+x03, or MU182021A-x01+x03 is indicated on the module ejector. On option display of the software, it is displayed as “MU182020A/21A-x01(28Gbit/s Extension)”. However, the operation between 8.0 to 28.1 Gbit/s bit rate is guaranteed.

  • Page 21: Application Parts

    Chapter 1 Overview 1.2.3 Application parts Table 1.2.3-1 shows the application parts for the MU182020A/21A. All application parts are sold separately. Table 1.2.3-1 Application parts Model name/ Product name Remarks symbol J1137 Terminator SMA-P J1342A Coaxial cable 0.8m APC 3.5 connector...

  • Page 22: Specifications

    External clock Number input Input (from Frequency 4.0 to 12.5 GHz System Clock) 4.0 to 14.0 GHz (When MU182020A-x01 is installed) 4.0 to 14.05 GHz (When MU182020A-x01, x03 installed) 4.0 to 12.5 GHz 8.0 to 25.0 GHz (switchable when MU182020A-x02 installed) 4.0 to 14.0 GHz...
  • Page 23 Chapter 1 Overview Table 1.3.1-1 Specifications for MU182020A (Cont’d) Item Specifications Remarks 1/2 Clock Input Number From Input MU181020A/B Clock Output Amplitude 0.25 to 1.0 Vp-p Termination AC/50 Ω Connector Amplitude Min. 0.4 Vp-p, Max. 1.2 Vp-p Termination AC/50 Ω...
  • Page 24 Specifications Table 1.3.1-1 Specifications for MU182020A (Cont’d) Item Specifications Remarks Data Output* Number 2 (Data/ Data ) Defined with Output PRBS2  MU182020A- Mark Ratio 1/2 Amplitude 0.25 to 1.75 Vp-p/2 mV Step (Independent, (Variable Data variable) Output (0.25 Tr/Tf, Total Accuracy:50 mV 17% of Amplitude...
  • Page 25 Chapter 1 Overview Table 1.3.1-1 Specifications for MU182020A (Cont’d) Item Specifications Remarks Data Output* Number 2(Data/ Data ) (continued) Output MU182020A- Amplitude 0.5 to 2.5 Vp-p/2 mV Step (Independent, variable) (Variable Accuracy:50 mV 17% of Amplitude (Cross Data Output Point 50%, and Cross Point 30 to 80%@25 (0.5 to...
  • Page 26 Specifications Table 1.3.1-1 Specifications for MU182020A (Cont’d) Item Specifications Remarks Data Number 2 (Data/ Data ) Output* Output (continued) Amplitude 0.5 to 3.5 Vp-p/2 mV Step (Independent, MU182020A- variable) Accuracy:50 mV 17% of Amplitude (Cross (Variable Point 50%, and Cross Point 30 to 80%@25...
  • Page 27 Factor The specification of the clock output waveforms is the value observed using sampling oscilloscope bandwidth of 50 GHz. The specification when MU182020A-x21 is not installed is the value observed using application part J1342A coaxial cable 0.8m (APC3.5 connector). The specification when MU182020A-x21 is not installed is the value observed using application part J1439A coaxial cable 0.8m (K...
  • Page 28 Specifications Table 1.3.1-1 Specifications for MU182020A (Cont’d) Item Specifications Remarks Variable Data Variable phase –2000 to +2000 mUI/2 mUI Step When Delay range (with MU181020A/B installed in another MU182020A mainframe and at Independent) -x30 or x31 –64000 to +64000 mUI/2 mUI Step...

  • Page 29: Specifications For Mu182021A

    Chapter 1 Overview 1.3.2 Specifications for MU182021A Table 1.3.2-1 Specifications for MU182021A Item Specifications Remarks Operating bit rate 8.0 to 25.0 Gbit/s 8.0 to 28.0 Gbit/s (When MU182021A-x01 is installed) 8.0 to 28.1 Gbit/s (When MU182021A-x01 ,x03 installed) External clock Number input Input...
  • Page 30 Specifications Table 1.3.2-1 Specifications for MU182021A (Cont’d) Item Specifications Remarks 1/2 Clock Clock Output Output Amplitude Min. 0.4 Vp-p, Max. 1.2 Vp-p MU181020A/B Termination AC/50 Ω Ext Clock Input Connector Between ≤10 ps channels Skew 12 GHz (when MU182021A-x01 uninstalled) 14 GHz (whenMU182021A-x01 installed) 14.05 (whenMU182021A-x01+x03...
  • Page 31 Chapter 1 Overview Table 1.3.2-1 Specifications for MU182021A (Cont’d) Item Specifications Remarks Data Output Number 4(Data1/ Data1 ,Data2/ Data2 ) Defined with Output PRBS2  MU182021A- Mark Ratio 1/2 Amplitude 0.25 to 1.75 Vp-p/2 mV Step (Independent, (Variable Data variable) Output (0.25 Tr/Tf, Total Accuracy:50 mV 17% of Amplitude (Cross...
  • Page 32 Specifications Table 1.3.2-1 Specifications for MU182021A (Cont’d) Item Specifications Remarks Data Output* Number 4(Data1/ Data1 ,Data2/ Data2 ) (continued) Output MU182021A- Amplitude 0.5 to 2.5 Vp-p/2 mV Step (Independent, variable) (Variable Accuracy:50 mV 17% of Amplitude (Cross Data Output Point 50%, and Cross Point 30 to 80%@25 (0.5 to Gbit/s) 2.5 Vp-p))
  • Page 33 Total Jitter Typ. 8 psp-p* Waveform Typ. 25 mV 10%@25 Gbit/s Typ. 25 mV 15%@28 Gbit/s Distortion (0-peak) (when MU182021A-x01 installed) Typ. 25 mV 15%@28.1 Gbit/s (when MU182020A-x01+x03 installed) ON・OFF ON・OFF switchable Data1/Data2 0.25 UI Skew (Refer MU182021A-x10 Data1/Data2 Skew.) Termination Can be switched between AC and DC,50 Ω...
  • Page 34 Specifications Table 1.3.2-1 Specifications for MU182021A (Cont’d) Item Specifications Remarks Clock Number When Output* Output MU182021A-x Amplitude Min. 0.3 Vp-p, Max. 1.0 Vp-p installed* Min. 0.7 Vp-p, Max. 1.0 Vp-p (When MU182021A-x02 is installed, and external clock input is 0.5 Vp-p or more) ON・OFF ON・OFF switchable (When MU182021A-x02 is installed)
  • Page 35 Chapter 1 Overview Table 1.3.2-1 Specifications for MU182021A (Cont’d) Item Specifications Remarks Variable Data Variable phase –2000 to +2000 mUI/2 mUI Step When Delay range (When installed in a different unit from MU182021A MU181020A/B, or when being Independent -x30 or x31 –64000 to +64000 mUI/2 mUI Step is installed (When...
  • Page 36 Specifications Table 1.3.2-1 Specifications for MU182021A (Cont’d) Item Specifications Remarks Emphasis Delay –2000 to +2000 mUI/2 mUI steps Control With mUI-ps conversion (Cont’d) With Calibration Pattern Data1 × 2 Data occurrence order Function as Combination Data 1A 1,5,9,13,17,・・・ 25Gbit/s (25G x 2ch Data 1B 3,7,11,15,19,・・・...
  • Page 37 Chapter 1 Overview 1-22.

  • Page 38: Chapter 2 Preparation Before Use

    Chapter 2 Preparation before Use This chapter describes preparations required before using MU182020A/21A. Installation to Signal Quality Analyzer ....... 2-2 How to Operate Application ........2-2 Preventing Damage ........... 2-3...

  • Page 39: Installation To Signal Quality Analyzer

    Chapter 2 Preparation before Use 2.1 Installation to Signal Quality Analyzer For information on how to install the MU182020A/21A to the Signal Quality Analyzer and how to turn on the power, refer to Chapter 2 “Preparation before Use” in the Signal Quality Analyzer Series Installation Guide.

  • Page 40: Preventing Damage

    Use any metal to discharge the outer conductor and core before use. 5. Never open the MU182020A/21A. If you open it and MU182020A/21A has failed or sufficient performance cannot be obtained, we may decline to repair the MU182020A/21A.
  • Page 41 Chapter 2 Preparation before Use 8. To protect the MU182020A/21A from electrostatic discharge failure, a conductive sheet should be placed onto the workbench, and the operator should wear an electrostatic discharge wrist strap. Connect the ground connection end of the wrist strap to the conductive sheet or to the ground terminal of the mainframe.
  • Page 42 Preventing Damage Set output ON/OFF after DC power source completing connections. 50Ω To protect DUT and PPG MP1800A MU181020A/B Coaxial Coaxial cable MU182020A/21A Bias-T Do not connect/disconnect while DC voltage impressed. Fig. 2.3-1 Bias-T Connection Example...
  • Page 43 Chapter 2 Preparation before Use 2-6.

  • Page 44: Chapter 3 Panel Layout And Connectors

    Chapter 3 Panel Layout and Connectors This chapter describes the panel and connectors of the MU182020A/21A. Panel Layout .............. 3-2 3.1.1 MU182020A Panel ........3-2 3.1.2 MU182021A Panel ........3-3 Inter-Module Connection ........... 3-4...

  • Page 45: Panel Layout

    Chapter 3 Panel Layout and Connectors 3.1 Panel Layout 3.1.1 MU182020A Panel Fig. 3.1.1-1 MU182020A Panel layout Table 3.1.1-1 Connectors on MU182020A panel Name Description 1/2 Data Input A connectors Inputs for data signals from dual MU181020A/B 1/2 Data Input B connectors...
  • Page 46 Panel Layout 3.1.2 MU182021A Panel Fig. 3.1.2-1 MU182021A Panel layout Table 3.1.2-1 Connectors on MU182021A panel Name Description 1/2 Data Input 1A Inputs for data signals from dual MU181020A/B connectors Multiplexes signal to Data Output1 1/2 Data Input 1B connectors 1/2 Data Input 2A Inputs for data signals from dual MU181020A/B connectors...

  • Page 47: Inter-Module Connection

    Fig. 3.2-1 and Fig. 3.2-2. Note: Avoid static electricity when handling the devices. Fig. 3.2-1 Inter-module connection example for MU182020A Use coaxial cables to connect the Ext. Clock Input connectors of the two MU181020B units with the 1/2 Clock Output connectors of this module.
  • Page 48 Use a coaxial cable to connect the Clock signal source with the Ext. Clock Input connector of this module. WARNING 1. When signals are input to this MU182020A/21A, avoid excessive voltage beyond the rating. Otherwise, the circuit may be damaged.
  • Page 49 6. When removing a cable from a connector on the front panel of the MU182020A/21A, be careful not to add excessive stress to the connector. Addition of excessive stress to a connector may result in characteristic degradation or a failure.

  • Page 50: Chapter 4 Configuration Of Setup Dialog Box

    Chapter 4 Configuration of Setup Dialog Box This chapter explains the functions of each tab in the module procedure window. Configuration of Entire Setup Dialog Box ....4-2 Operation Tab Windows ..........4-3 Setting Output Interface..........4-4 4.3.1 Setting Data/XData........4-4 4.3.2 Setting delay..........

  • Page 51: Configuration Of Entire Setup Dialog Box

    Chapter 4 Configuration of Setup Dialog Box 4.1 Configuration of Entire Setup Dialog Box The configuration of the setup dialog box when the MU182020A/21A is inserted into a mainframe is shown below. Fig. 4.1-1 Configuration of entire setup dialog box The setup dialog box mainly consists of four blocks ([1] to [4] in the figure above).

  • Page 52: Operation Tab Windows

    Operation Tab Windows 4.2 Operation Tab Windows The MU182020A/21A operation tab windows are listed below. Fig. 4.2-1 Function setting selection tabs Table 4.2-1 Function setting selection tabs Tab name Functions Data1 Interface Selection and setting of Data1/XData1 Various output interface settings can be configured in this tab window.

  • Page 53: Setting Output Interface

    Chapter 4 Configuration of Setup Dialog Box 4.3 Setting Output Interface To set the output interface, select the Data1 Interface and Data2 Interface tabs of the Operation screen The screen Data and Data settings each correspond to the signals output from the Data and Data connectors, respectively. The following explains the settings related to the Data connector called XData.
  • Page 54 [4] When Data1/Data2 Tracking is ON, the settings for Defined Interface, Amplitude, Offset, External ATT Factor, and Cross Point of Data 2 become the same as the Data1 settings. (The MU182020A does not support this function.) [5] When Tracking is set to ON, the settings for the XData become the same as those for the Data.
  • Page 55 Chapter 4 Configuration of Setup Dialog Box [7] Separately configure the defined interface setting for Data and XData. Sometimes, some items cannot be selected, depending on the installed data output options and the Level Guard setting. Table 4.3.1-2 Amplitude setting values Amplitude Offset Item...
  • Page 56 Setting Output Interface [9] Separately set the offset for Data and XData. The setting range varies depending on the level guard setting, amplitude setting, and installed option. The offset setting ranges when Defined Interface is set to Variable are shown in the table below. Clicking to change [AC OFF] to [AC ON] enables AC-coupled output.
  • Page 57 2. When PCML, LVPECL, or ECL is selected for Defined Interface, the voltage corresponding to the DUT’s termination voltage is applied to the output side of the MU182020A. In this event, the DUT may be damaged if the interface conditions do not match.

  • Page 58: Setting Delay

    Setting Output Interface 4.3.2 Setting delay When MU182020A-x30 is installed into the MU182020A, the phase of the data output can be changed relative to the clock output. Data Out The phase of the Data output can be changed based on the Clock output.
  • Page 59 Chapter 4 Configuration of Setup Dialog Box [1] Click [Calibration] to perform calibration, which is a phase variable function. When the power is supplied, the frequency is changed, or the ambient temperature fluctuates, the calibration prompting alarm LED lights up. In such a case, click this button to perform calibration.
  • Page 60 [5] Set the Delay offset per the main frame. This is valid only when the Unit Sync is set to On. And then, the common value is set in all MU182020A/21A installed in the same main frame. This can be set per 2 mUI step within the range from –64,000 to 64,000 mUI.
  • Page 61 Chapter 4 Configuration of Setup Dialog Box Adjusting MU182021A 2 Ch data skew When using the MU182021A, the data skew between two data signals can be adjusted using the delay setting. Slot1 Data Out The phase of Slot1 Data Out can be changed according to Slot2 Data Out.

  • Page 62: Setting Clock

    [1] Select ON or OFF for the clock output. The following explains Clock/XClock but since there is no XClock output when using the MU182020A, there are no panel displays or settings related to XClock. [2] Select the offset reference. The Offset and Amplitude settings are restricted according to the set offset reference and the currently set Offset and Amplitude.
  • Page 63 (Amplitude, Offset Max (Voh), and Offset Min (Vol)) after passing through the fixed attenuator, which is connected between the MU182020A and the DUT, limit the output level of these setting value. Therefore, if you use the fixed attenuator without connecting, a signal exceeding the setting value is output.
  • Page 64 [AC OFF] is pressed, [AC ON] is set and the output is AC-coupled. Table 4.3.3-4 Offset setting range Option installed into Offset Setting steps MU18202xA With MU182020A-x21 installed –4.0 to 3.3 V 0.001 V With MU182021A-x21 installed –4.0 to 3.3 V 0.001 V [8] Separately set the external ATT factor for Clock and XClock.
  • Page 65 Clock]. When outputting data at the same rate as the input clock, select [Full Rate Clock]. If the MU182020A-x02 or MU182021A-x02 is not installed, operate at [Half Rate Clock]. Moreover if neither the MU182020A-x02/x21 nor the MU182021A-x20/x21 module is installed, [Clock Interface] is not displayed and operation is only at the [Half Rate Clock] rate.
  • Page 66 Setting Output Interface 6. Immediately after changing the frequency of the reference signal generator from a high frequency to a low frequency, the amplitude may increase temporarily about 30%, then settled down to a specifed value. If it exceeds the rated value of the DUT, turn OFF the Output of MP1800A prior to change of the frequency first, and then turn ON the Output after the frequency change.

  • Page 67: Setting Emphasis

    Chapter 4 Configuration of Setup Dialog Box 4.3.4 Setting Emphasis When the MU182021A-x40 is installed and a Power Divider is connected externally, an emphasis signal can be generated downstream of the Power Divider. [Emphasis Control] is only enabled when the MU182021A-x40 Emphasis and the Combination Setting status is 25G Channel option is installed Synchronization.
  • Page 68 Setting Output Interface Fig. 4.3.4-2 Emphasis tab window [1] Select ON/OFF for Emphasis output. When ON is set, the [Data1 Interface] and [Data2 Interface] tab setting items are restricted and the Emphasis signal is output. At this setting, the [Data1 Interface] and [Data2 Interface] tab settings are disabled.
  • Page 69 Chapter 4 Configuration of Setup Dialog Box 2 ． When the Defined Interface setting at the [Data1 Interface] and [Data2 Interface] tabs is other than Variable, the following dialog message is displayed to set the setting to Variable. 3 ． When the Tracking setting at [Data1 Interface] and [Data2 Interface] tabs is set to ON, the following dialog message is displaed to set the setting to OFF.
  • Page 70 Setting Output Interface Emphasis Pulse Width Emphasis Amplitude Amplitude Ratio Fig. 4.3.4-4 Emphasis output setting image (if positive) [4] Set the Emphasis Amplitude Ratio for both Data ， and XData. The setting range varies with the Amplitude, External ATT Factor, and installed data output options.
  • Page 71 DUT. 2. Be sure to confirm that a fixed attenuator is connected between the MU182020A and the DUT before setting the external ATT factor. The DUT may be damaged due to the increased actual output amplitude if not connected to a fixed attenuator or when connected to a fixed attenuator with an attenuation value smaller than that set by External ATT Factor.

  • Page 72: Setting Test Patterns

    Setting Test Patterns 4.4 Setting Test Patterns The data patterns output by this equipment are determined by the Combination setting (see section 4.5), and by the pattern setting of the MU181020A/B Pulse Pattern Generator. When Combination is set, the pattern selected at the MU181020A/B Operation screen becomes the multiplexed pattern output from this equipment.

  • Page 73: Multi Channel Function

    Chapter 4 Configuration of Setup Dialog Box 4.5 Multi Channel Function Multi-channel sync operation is performed by installing multiple MU181020A/B Pulse Pattern Generator boards in the MP1800A. Multi-channel functions include Combination Channel Synchronization functions. Combination Function Types (1) 4ch Combination: when four PPG/ED modules installed (2) 25Gx2ch Combination: when four PPG/ED modules installed (3) 2ch Combination: when two or more PPG/ED modules installed Channel Synchronization Function Types...
  • Page 74 Fig. 4.5.1-2 25Gx2ch Combination pattern generation/reception Pattern generation control to create 25G 1 Ch data using MUX 10 Gbit/s×2 Slot1 Slot2 For combination of MU182020A 1ch MUX Pattern generation control to create 25G 1 Ch data using DEMUX 10 Gbit/s×2 Slot1 DEMUX...
  • Page 75 Chapter 4 Configuration of Setup Dialog Box 10 Gbit/s×4 Slot1 Select when it is required to synchronize pattern Slot2 3’ 1’ 4’ 2’ generating position, such as in a PON application. The reception 1’’ 3’’ Slot3 2’’ 4’’ side operates independently as usual.

  • Page 76: Combination Setting

    Multi Channel Function 4.5.2 Combination setting To use the Multi-channel function, click the [Combination Setting] module function button to open the Combination Setting dialog box for setting. For details, refer to Section 5.3.3 “Combination setting” in the MX180000A Operation Manual. Fig.
  • Page 77 Chapter 4 Configuration of Setup Dialog Box Table 4.5.2-1 Screen Layout of Combination Setting Operation Settings Contents Independent Select operate independently. Combination Select when performing 25G tests in combination with this module. Select when performing 40 tests using external MUX/DEMUX. 25Gx2ch Select when generating/receiving 25G 2 Combination...

  • Page 78: Chapter 5 Use Example

    Chapter 5 Use Example This chapter provides use examples of measurement using the MU182020A/21A. Measuring Optical Transceiver Module ..... 5-2 DQPSK Transmission Test........5-6...

  • Page 79: Measuring Optical Transceiver Module

    MU182041A.) Press the [Combination] button for the module function and select 2 Ch Combination. (3) Adjust the data output interface of the MU182020A to the input interface of the DUT. The output is already OFF at this time.
  • Page 80 Measuring Optical Transceiver Module (5) Set the operation bit rate at the MG3693B. When the DUT requires a 1/1 Clock frequency, set the 1/1 operation rate at the MG3693B. When the DUT requires a 1/1 Clock frequency, set the 1/2 operation rate at the MG3693B.
  • Page 81 Chapter 5 Use Example MG3693B RF OUTPUT MP1800A MU181020A EX CLK IN Data Out MU181020A EX CLK IN Data Out MU182020A EX CLK IN 1/2 CLK OUT DUT (E/O element) 1/2 Data IN EML, etc. Data Out XData Out Clock Output Clock Loopback...
  • Page 82 Measuring Optical Transceiver Module Enable the signal output of the MU182020A. Set the Output of MG3693B and Data/XData Output in the Data Interface screen to ON. Then ， set [Output ON/OFF] of the module function button or [Output] of the MP1800A front panel to ON.

  • Page 83: Dqpsk Transmission Test

    Chapter 5 Use Example 5.2 DQPSK Transmission Test This section describes how to perform 25 Gbit/s DQPSK transmission test using MP1800A. This measurement describes a test example with the configuration where MU181020A/B ， MU182041A ， MU181040A/B, and this equipment are installed in MP1800A as a reference.
  • Page 84 DQPSK Transmission Test (6) Match the clock output interface to the input of the DUT (Driver AMP driving the LN Modulator used for CSRZ generation). The Output is already set to off at this time. (7) Set the reception test pattern. Select test pattern...
  • Page 85 Chapter 5 Use Example MG3693B RF OUTPUT MP1800A CSRZ-DQPSK Signal MU181020B EX CLK IN Data Out MU181020B EX CLK IN Data Out MU181020B EX CLK IN Data Out MU181020B CSRZ-DQPSK Encoder Module EX CLK IN Data Out MU182021A Optical EX CLK IN LN MODULATOR Coupler 1/2 CLK OUT...
  • Page 86 The DUT may be damaged if a signal line is connected or disconnected while the output is ON. Be sure to turn off the MP1800A before changing the cable connection. Enable the signal output of the MU182020A. Set Output of MG3693B and Data/XData Output in the Data Interface screen to ON.
  • Page 87 Chapter 5 Use Example 5-10.

  • Page 88: Chapter 6 Performance Test

    Chapter 6 Performance Test This chapter describes the performance testing of the MU182020A/21A. Overview ..............6-2 Devices Required for Performance Tests....6-3 Performance Test Items ..........6-4 6.3.1 Operating frequency range......6-4 6.3.2 Waveform evaluation test......6-7...

  • Page 89: Overview

    Chapter 6 Performance Test 6.1 Overview Performance tests are executed to check that the major functions of the MU182020A/21A meet the required specifications. Execute performance tests at acceptance inspection, operation check after repair, and periodic (once every six months) testing.

  • Page 90: Devices Required For Performance Tests

    Devices Required for Performance Tests 6.2 Devices Required for Performance Tests Before starting performance tests, warm up the MU182020A/21A and the measuring instruments for at least 30 minutes. Table 6.2-1 shows the devices required for performance tests. Table 6.2-1 Devices required for performance test...

  • Page 91: Performance Test Items

    6.3.1 Operating frequency range (1) Specifications Table 6.3.1-1 Specifications Options Model Specifications MU182020A/21A 4 to 12.5 GHz 4 to 14 GHz At Full Rate Clock：8 to 25 GHz When selecting Half Rate Clock：4 to 12.5 GHz When selecting Full Rate Clock：8 to 28 GHz When selecting Half Rate Clock：4...
  • Page 92 Performance Test Items Install this module in the MP1800A and switch on the power. Switch on the power of the MP1800A and each measuring instrument and allow them to warm up. Set the output level so as not to overload the input to the 25G DEMUX.
  • Page 93 Chapter 6 Performance Test Press the [Combination] button for the module function and select 25G x 2 Ch Combination. Set the Data signal output amplitude of the MU181020A to 500 mVp-p, offset (Vth) to 0 V, MU181020A test pattern to PRBS 31, and Mark Ratio to 1/2.

  • Page 94: Waveform Evaluation Test

    Performance Test Items 6.3.2 Waveform evaluation test (1) Specifications Table 6.3.2-1 Specifications Option Specifications MU182020A-x10 Amplitude : 0.25 V to 1.75 Vp-p Offset : － 2.0 to ＋ 3.3 Voh Variable Data Cross Point : 20 to 80% Output (0.25 to Tr/Tf : Typ.12 ps(20 to 80%)@25 Gbit/s, 1.75 Vp-p...
  • Page 95 Chapter ６ Performance Test (2) Device connection Sampling Oscilloscope MP1800A MU182020A AUX Output Trigger Input Data Data Input Output Clock Input Signal Generator (MP1800A + MU181000A) Clock Output Fig. 6.3.2-1 Connection diagram for waveform test (3) Test procedure Connect the cables among the measuring instruments, referring to Fig.

  • Page 96: Chapter 7 Maintenance

    Chapter 7 Maintenance This chapter describes the maintenance of the MU182020A/21A. Daily Maintenance ............. 7-2 Cautions on Storage ..........7-2 Transportation............7-3 Calibration..............7-3 Disposal ..............7-4...

  • Page 97: Daily Maintenance

     Tighten any loose parts fixed with screws, using the specified tools. 7.2 Cautions on Storage Wipe off any dust, soil, or stain on the MU182020A/21A prior to storage. Avoid storing the MU182020A/21A in any of the following locations:  Where there is direct sunlight ...

  • Page 98: Transportation

    Transportation 7.3 Transportation Use the original packing materials, if possible, when packing the MU182020A/21A for transport. If you do not have the original packing materials, pack the MU182020A/21A according to the following procedure. When handling the MU182020A/21A, always wear clean gloves, and handle it gently so as not to damage it.

  • Page 99: Disposal

    Chapter 7 Maintemance 7.5 Disposal Confirm the notes described in the Signal Quality Analyzer Series Installation Guide and observe national and local regulations when disposing of the MU182020A/21A. 7-4.

  • Page 100: Chapter 8 Troubleshooting

    Chapter 8 Troubleshooting This chapter describes how to check whether a failure has arisen when an error occurs during the operation of the MU182020A/21A. Problems Discovered during Module Replacement..........8-2 Problems Discovered during Output Waveform Observation ........8-2 Problems Discovered during...

  • Page 101: Problems Discovered During Module Replacement

    Chapter 8 Troubleshooting 8.1 Problems Discovered during Module Replacement Table 8.1-1 Remedies for problems discovered during replacement of MU182020A/21A module Symptom Location to Check Remedy A module is not Is the module Install the module again by referring to Section 2.3 recognized.
  • Page 102 Problems Discovered during Output Waveform Observation Table 8.2-1 Remedies for problems discovered during waveform observation (Cont’d) Symptom Location to Check Remedy Output waveform Do the cables used Use cables or connectors with good high-frequency cannot be monitored have good characteristics. normally.

  • Page 103: Problems Discovered During Error Rate Measurement

    Adjust the phase and offset to be optimal between margin bias the MU182020A and the DUT as well as between margin are secured? the DUT and ED, respectively. If a problem cannot be solved using any of the items listed above, perform initialization and check the items again.

  • Page 104: Appendix

    Appendix Appendix A List of Initial Settings ........A-1 Appendix B Setting Restrictions ........B-1 Appendix C Performance Test Record Sheet ....C-1 App.-I...
  • Page 105 Appendix App.-II.

  • Page 106: Appendix A List Of Initial Settings

    Appendix A List of Initial Settings A.1 List of Initialized Settings This appendix shows the MU182020A/21A settings that are initialized to the defaults at factory shipment. In addition, All settings can be initialized using the Initialize pull-down from the File menu.
  • Page 107 Appendix A List of Initial Settings Table A.1–1 List of Initialized Items for MU182020A (Cont’d) Setting Secondary Main Item Tertiary Item Default Setting Function Item Output Clock/XClock Tracking Data (MU182020A- Level Guard OFF (MU182020A-x21) (continued) x21) Level Guard Amplitude 2.000 Vpp...
  • Page 108 List of Initialized Settings Table A.1–2 List of Initialized Items for MU182021A Setting Secondary Main Item Tertiary Item Default Setting Function Item Output Data/XData Output ON/OFF Data1,2 Clock/XClock Output ON/OFF (MU182021A-x21,MU182021A-x02） Amplitude Offset Data/XData Data1,2 Tracking Tracking Level Guard Level Guard Amplitude 1.750 Vp-p (MU182021A-x10) Setup...
  • Page 109 Appendix A List of Initial Settings Table A.1–2 List of Initialized Items for MU182021A (Cont’d) Setting Secondary Main Item Tertiary Item Default Setting Function Item Output Clock/XClock Tracking OFF (MU182021A-x21) Data1,2 (MU182021A- Level Guard OFF (MU182021A-x21) (continued) x21) Level Guard Amplitude 2.000 Vpp Setup...
  • Page 110 Appendix B Setting Restrictions Setting range of offset and amplitude......B-2 B.1.1 MU182020/21A-x10 Variable Data Output (0.25 to 1.75 Vp-p)......... B-3 B.1.2 MU182020/21A-x11 Variable Data Output (0.5 to 2.5 Vp-p)..........B-5 B.1.3 MU182020/21A-x13 Variable Data Output (0.5 to 3.5 Vp-p)..........B-7 B.1.4 MU182020/21A-x21 Clock Output (0.5 to 2.0 Vp-p)..........

  • Page 111: Setting Range Of Offset And Amplitude

    Appendix B Setting Restrictions B.1 Setting range of offset and amplitude  Relationship between offset reference value and amplitude Amplitude: High Amplitude: Low Fig. B.1-1 Relationship between offset reference value and amplitude...

  • Page 112: Mu182020/21A-X10 Variable Data Output (0.25 To 1.75 Vp-P

    Setting range of offset and amplitude B.1.1 MU182020/21A-x10 Variable Data Output (0.25 to 1.75 Vp-p) <Specification> Amplitude: 0.25 to 1.75 Vp-p Offset: 2.0 to +3.3 V (Voh) (a) Voh Amplitude 1.75 0.25 Offset(Voh) －2 ＋3.3 Fig. B.1.1-1 Setting range of amplitude and offset based on offset reference (Voh) (MU182020/21A-x10) (b) Vth Amplitude...

  • Page 113: Appendix B Setting Restrictions

    Appendix B Setting Restrictions (c) Vol Amplitude 1.75 0.25 Offset(Vol) ＋1.55 －2.25 －3.75 ＋3.05 Fig. B.1.1-3 Setting range of amplitude and offset based on offset reference (Vol) (MU182020/21A-x10)

  • Page 114: Mu182020/21A-X11 Variable Data Output (0.5 To 2.5 Vp-P

    Setting range of offset and amplitude B.1.2 MU182020/21A-x11 Variable Data Output (0.5 to 2.5 Vp-p) <Specification> Amplitude: 0.5 to 2.5 Vp-p Offset: 2.0 to +3.3 V (Voh) (a) Voh Amplitude Offset(Voh) －1.5 －2 ＋3.3 Fig. B.1.2-1 Setting range of amplitude and offset based on offset reference (Voh) (MU182020/21A-x11) (b) Vth Amplitude...
  • Page 115 Appendix B Setting Restrictions (c) Vol Amplitude Offset(Vol) ＋0.8 －4 －2.5 ＋2.8 Fig. B.1.2-3 Setting range of amplitude and offset based on offset reference (Vol) (MU182020/21A-x11)

  • Page 116: Mu182020/21A-X13 Variable Data Output (0.5 To 3.5 Vp-P

    Setting range of offset and amplitude B.1.3 MU182020/21A-x13 Variable Data Output (0.5 to 3.5 Vp-p) <Specification> Amplitude: 0.05 to 3.5 Vp-p Offset: 2.0 to +3.3 V (Voh) (a) Voh Amplitude Offset(Voh) －0.5 －2 ＋3.3 Fig. B.1.3-1 Setting range of amplitude and offset based on offset reference (Voh) (MU182020/21A-x13) (b) Vth Amplitude...
  • Page 117 Appendix B Setting Restrictions (c) Vol Amplitude Offset(Vol) －0.2 －4 －2.5 ＋2.8 Fig. B.1.3-3 Setting range of amplitude and offset based on offset reference (Vol) (MU182020/21A-x13)

  • Page 118: Mu182020/21A-X21 Clock Output (0.5 To 2.0 Vp-P

    Setting range of offset and amplitude B.1.4 MU182020/21A-x21 Clock Output (0.5 to 2.0 Vp-p) <Specification> Amplitude: 0.5 to 2.0 Vp-p Offset: 2.0 to +3.3 V (Voh) (a) Voh Amplitude Offset(Voh) －2 ＋3.3 Fig. B.1.4-1 Setting range of amplitude and offset based on offset reference (Voh) (MU182020/21A-x21) (b) Vth Amplitude...
  • Page 119 Appendix B Setting Restrictions (c) Vol Amplitude Offset(Vol) ＋1.3 －4 －2.5 ＋2.8 Fig. B.1.4-3 Setting range of amplitude and offset based on offset reference (Vol) (MU182020/21A-x21) B-10...

  • Page 120: Combination Function Configuration

    Combination Function Configuration B.2 Combination Function Configuration The conditions required to execute the Combination function by using multiple MU181020A/B modules are described below. All of the following conditions must be satisfied to execute the Combination function. Enabling conditions for Combination function ...

  • Page 121: Channel Synchronization Function Configuration

    Appendix B Setting Restrictions B.3 Channel Synchronization Function Configuration The conditions required to execute the Channel Synchronization function by using multiple MU181020A/B modules are described below. All of the following conditions must be satisfied to execute the Channel Synchronization function. Enabling conditions for Channel Synchronization function ...

  • Page 122: Combination Operation

    MP1800A-015/016 2ch Combination Figure B.4-1 shows combined operation of the MU181020A/B in slot1 and slot2 and the MU182020A in slot5 (Data1 for 21A). The Delay setting at the Data Interface tab of this module is linked with the Delay of the MU181020A/B in slot1 and slot2.

  • Page 123: Settings Common In Combination System

    Appendix B Setting Restrictions B.5 Settings Common in Combination System When the MU181040A is used in a Combination system, some setting items will apply to all the other modules in the Combination system. Table C.3-1 shows whether the setting items are common or independent in a Combination system.
  • Page 124 Settings Common in Combination System Table B.5-1 Common/Independent Setting Items in Combination System (Cont’d) Main Individual Setting Common/ Function Sub-Category Category Item Independent Pattern PRBS Common Number of Rows Common Logic Common (Pattern Common) Mark Ratio Common (Pattern Common) Bit Shift Common (Common with Mixed Data)
  • Page 125 Appendix B Setting Restrictions Table B.5-1 Common/Independent Setting Items in Combination System (Cont’d) Main Individual Setting Common/ Function Sub-Category Category Item Independent Misc Pattern Common Sequence Repeat Pulse Width Common Delay Common Burst Source Common Data Sequence Common Enable Period Common Burst Cycle Common...

  • Page 126: Appendix C Performance Test Record Sheet

    Appendix C Performance Test Record Sheet C.1 Performance Test Record Sheet Equipment Name: MU182020A 25Gbit/s 1ch MUX MU182021A 25Gbit/s 2ch MUX Serial No.: Ambient Temperature: °C Relative Humidity: % Table C.1–1 MU182020A Option Signal Operating Frequency Range Results Configuration Source...
  • Page 127 Appendix C Performance Test Record Sheet Table C.1–1 MU182020A (Cont’d) Option Operating Frequency Range Signal Source Results Configuration Specification MU182020A-x11 Amplitude 0.5 to 2.5 Vp-p/2 mV Step Setting Error Setting Error ： 50 mV 17% of (Variable Data Amplitude Output (0.5 to 2.5Vp-p))
  • Page 128 Performance Test Record Sheet Table C.1–1 MU182020A (Cont’d) Option Operating Frequency Range Signal Source Results Configuration Specification Clock Output Amplitude Min. 0.3 Vp-p, Max. 1.0 Vp-p Setting Error (When Min. 0.7 Vp-p, Max. 1.0 Vp-p MU182020A-x21 (When MU182020A-x02 is installed)
  • Page 129 Appendix C Performance Test Record Sheet Table C.1–2 MU182021A Option Signal Operating Frequency Range Results Configuration Source Specification Operating Bit 8.0 to 25.0 Gbit/s － Rate 8.0 to 28.0 Gbit/s (When MU182021A-x01 is installed) MU182021A-x10 Amplitude 0.25 to 1.75 Vp-p / 2 mV Step Setting Error Setting Error ：...
  • Page 130 Performance Test Record Sheet Table C.1–2 MU182021A (Cont’d) Option Operating Frequency Range Signal Source Results Configuration Specification MU182021A-x11 Amplitude 0.5 to 2.5 Vp-p/2 mV Step Setting Error Setting Error ： 50 mV 17% of (Variable Data Amplitude Output (0.5 to 2.5 Vp-p)) Offset －...
  • Page 131 Appendix C Performance Test Record Sheet Table C.1–2 MU182021A (Cont’d) Option Operating Frequency Range Signal Source Results Configuration Specification MU182021A-x13 Amplitude 0.5 to 3.5 Vp-p/2 mV Step Setting Error Setting Error ： 50 mV 17% of (Variable Data Amplitude Output (0.5 to 3.5 Vp-p)) Offset －2.0 to ＋3.3 Voh, Min.－4.0 Vol/1...
  • Page 132 Performance Test Record Sheet Table C.1–2 MU182021A (Cont’d) Option Operating Frequency Range Signal Source Results Configuration Specification Clock Output Amplitude Min. 0.3 Vp-p, Max. 1.0 Vp-p Setting Error Min. 0.7 Vp-p, Max. 1.0 Vp-p (When (When MU182021A-x02 is installed) MU182021A-x21 is not installed) Clock Output Amplitude...
  • Page 133 Appendix C Performance Test Record Sheet C-8.

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