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Pendulum WM-10 User Manual

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Wandermeters
WM-10 & WM-11
Users Manual

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Summary of Contents for Pendulum WM-10

  • Page 1 Wandermeters WM-10 & WM-11 Users Manual...
  • Page 2 4031 600 10001 Rev. 05 (February 2003) This manual, in whole or in part, may not be copied without permission. All product names are trademarks of their respective companies. © 2000 Pendulum Instruments AB All rights reserved. Printed in Sweden.

  • Page 3: Table Of Contents

    Table of Contents EC DECLARATION OF CONFORMITY . . I-IV Preparations ..... . . 6-2 Outputs ......6-2 1 Preface Test of PC Connection .

  • Page 4: Ec Declaration Of Conformity

    Product Identification: Product: Wandermeter Brand: Pendulum Model: WM-10, WM-11 Version: All models Additional Information: is in conformance with the EC Directive 89/336/EEC based on test results using harmonized standards in accordance with Article 10(1) of the directive LVD-73/23/EEC.

  • Page 5: Preface

    Chapter 1 Preface...

  • Page 6: Introduction

    Applications Reference and graphical display. Can be left unattended for automatic measure- WM-10 ments, without a PC, for diagnostic and The WM-10 Wandermeter can be used for sev - troubleshooting measurements. eral purposes: – Graphical presentation of TIE, MTIE and TDEV.
  • Page 7 Local Mode: After configuration means The WM-10/WM-11 Wandermeter can be op - WanderView SW over the auxiliary RS-232 in- erated stand-alone. During the measurement, terface marked CONFIG IP, the Ethernet inter- the TIE curve on the display is continuously up -...
  • Page 8 Preface Easy to Use A fully automatic signal check informs the user whether he/she has connected the right signal from the rack (e.g clock or data signal). The unit can be left unattended. It stops after set measuring time and can even delay its measure - ment start if certain conditions are met.

  • Page 9: Safety Instructions

    Chapter 2 Safety Instructions...

  • Page 10: Introduction

    Safety Instructions Introduction Safety Precautions Read this page carefully before you install and To ensure the correct and safe operation of this use the instrument. instrument, it is essential that you follow gener - ally accepted safety procedures in addition to This instrument has been designed and tested the safety precautions specified in this manual.

  • Page 11: Grounding

    Line voltage is al - – Inform your local Pendulum Service Cen- ways present on the primary side. ter.. WARNING: Always consider the in- For example, the instrument is likely to be un- strument active as soon as it is safe if it is visibly damaged.

  • Page 12: 2-4 Disposal Of Hazardous Material

    Safety Instructions This page is intentionally left blank. 2-4 Disposal of Hazardous Material...

  • Page 13: Preparations For Use

    Chapter 3 Preparations for Use...

  • Page 14: Unpacking Instructions

    90 to 264 V claim with the carrier immediately. Also notify 47 to 63 Hz. The instrument automatically ad - your local Pendulum sales or service office in justs itself to the line voltage. case repair or replacement may be required.

  • Page 15: Orientation And Cooling

    Do not replace the fuse. Send the instrument to the local Pendulum Service Center. AC Power Supply Backup WM-10 Wandermeter - E1 SIGNAL EXT. REF. IN 10MHz CHECK Max 12 Vrms If both AC and DC power are connected at the...

  • Page 16: Ethernet Connection (Wm-11)

    Preparations for Use Ethernet Connection (WM-11) After configuration means WanderViewÔ SW over the dedicated RS-232 port, the 10Base-T Ethernet interface lets the operator communicate with the Wandermeter in much the same way as with any Ethernet node. Remote control and data logging over the Internet is thus a simple task.

  • Page 17: Using The Controls

    Chapter 4 Using the Controls...

  • Page 18: About This Chapter

    Using the Controls TIE is the basic measurement performed by the About This Chapter Wandermeter, and the TIE raw data is the input to the MTIE and TDEV processed presentation This chapter gives you a quick introduction to modes. During a TIE measurement in Local all the controls of the instrument, the design of Mode, the graphical display is continuously up - the user interface, and front panel text.
  • Page 19 Using the Controls PRC (ETSI), SSU (ETSI), SEC (ETSI), MTIE [3] SSU-L (ETSI), SEC-L (ETSI), and automatic MTIE = Maximum Time Interval Error. This for “None” and “User-Defined”. presentation mode is the calculated max. differ - ence between any 2 TIE-values for various ob - TDEV [4] servation intervals (t).

  • Page 20: Test Mode

    Signal Type selection. See the specifications in Chapter 8 for a summary of the In the signal type field, clock signals are recog - signal types that WM-10 resp. WM-11 can ac - nized by “kHz” or “MHz” after the frequency, cept.
  • Page 21 Using the Controls Measuring Time Trigger Level Here you set the duration of the wander The automatically set values can be overridden measurement (TIE measurement) The timer by entering new values manually from the Trig - starts to count when the user presses the ger Level menu.

  • Page 22: Rear Panel

    IP address that is compatible with the local environment. Clock Outputs [13] WM-10 DC Power Connector [18] (only WM-11) Optional double 2.048 MHz clock outputs (Op - tion 35).

  • Page 23: Presentation Modes

    Using the Controls – Presentation Press 9 to enter the numerical entry mode. Press un to increment the value Modes in steps equal to the current time/div set - ting or press 9 a second time to enter the keyboard entry mode, if you want ex - act control of the start value of the x-axis.
  • Page 24 Using the Controls Note that the real angle is much smaller due to the entire data array (TIE vs Time). The width the different time scales. A number of observa - of the observation window is changed to give a tions can be made by examining this value, for instance: –...
  • Page 25 Using the Controls tion window is changed to give a new t, and the sweep is repeated, etc. The Y-axis shows the TDEV values and the X-axis shows the various observation windows t in seconds. Hunches on the TDEV curve suggest periodic variations of TIE.
  • Page 26 Using the Controls This page is intentionally left blank. 4-10 Presentation Modes...

  • Page 27: Wanderview

    Chapter 5 WanderView...

  • Page 28: Introduction

    WanderView – Introduction ADEV (Allan Deviation) – MADEV (Modified Allan Deviation) Text display: WanderViewä SW - Underlying data. WanderViewä is a Windows 95/98/NT- pro - gram that communicates with the Wandermeter Print-out: via one of the standard RS-232 ports of a PC. The WM-11 has also an Ethernet interface that - Any graph data.

  • Page 29: The Wanderviewä Screen

    WanderView The WanderViewä Screen FILE menu: Acquire: Mask: Help: Common Read data from Select standard or Help topics and FILE actions connected in - user-defined mask about like Open, strument. for compliance WanderViewä. Menu bar Save, Print. check. Tool bar View: Calculate: Instrument:...

  • Page 30: File Menu

    WanderView Establish the connection by pressing the button Ethernet Configuration with the phone receiver icon on the tool bar. (WM-11) You have to configure the network parameters FILE Menu before first use. This is performed under Instru - ment Change COM Port on the menu bar. See picture on page 5-7.

  • Page 31: Acquire Menu

    WanderView Edit Menu View Menu Copy: Copy the selection and put it on the Toolbar: show or hide the clipboard toolbar Status bar: show or hide the sta - tus bar Acquire Menu Undo last zoom: select the preceding zoom setting Zoom out full: zoom out to full graph display...
  • Page 32 These masks are marked NoName until re - named and edited using the dialog box shown at WM-10: Select Don’t Use Mask or select one of the bottom of this page. Select Mask Editor five standard masks or one of four user-defined from the menu to enter the dialog box.
  • Page 33 WanderView vated by checking the corresponding segment numbers. There are separate editing areas for the different methods - MTIE, TDEV - of presenting the re - sult of a measurement after internal reprocess - ing of the raw TIE data. Instrument Menu Connect: connect controller to in-...
  • Page 34 WanderView Signal Types (WM-11) Help Menu Help topics: list help topics About WanderView: display program in - The right list shows the current signal types that formation, version are recognizable by the instrument. The first number and copy - four of them are fixed in firmware, but up to six right more can be transferred from WanderView...

  • Page 35: Graphs In Wanderviewä

    WanderView WVD: WanderView TDEV Data Graphs in WanderViewä File Types WVT: WanderView TIE Data This graph shows the Time Deviation (TDEV) versus gradually increasing observation win - dows (t). It is calculated from the raw measure - ment data stored in a WVT file by ordering TDEV from the Calculate menu.
  • Page 36 WanderView If you click on the x- or y-axis, you can, for ex - WVMA: WanderView MADEV Data ample, change the scale. This is the case regard - less of file type. If you want to make a copy of the graph, choose Edit and Copy.

  • Page 37: Application Hints

    WanderView Editing the Y-axis Editing Labels You can e.g. change the scale and add horizon - tal marker lines. Editing the X-axis Text information along the axes can be edited by right-clicking the area below the X-axis or to the left of the Y-axis. The menu above will be displayed.

  • Page 38: Introduction To Adev And Madev

    WanderView menu Instrument ® Change Communication Port. You will see the serial number of the instrument under each graph as a reminder of which WanderView session belongs to which Wandermeter. If you need to operate the system through a firewall you might need to configure the firewall to allow TCP packets on the ports 5891 and 5892.

  • Page 39: Performance Check

    Chapter 6 Performance Check...

  • Page 40: General Information

    Performance Check General Preparations Information Power-On Test Connect the power cord. Press the green ON WARNING: Before turning on the in - button. The display backlight shall light up. At strument, ensure that it has been power-on the Wandermeter performs an auto - installed in accordance with the In - matic test of the following: stallation Instructions outlined in...

  • Page 41: Test Of Pc Connection

    – Repeat the tests above for the other output messages. connector. Front Panel Option 35 (WM-10) Controls – If a 2.048 MHz output option is installed, then connect a CNT-81R counter (50 W in - put termination) and verify that the fre - Preparations quency is 2.04800000 MHz ±...

  • Page 42: User Options

    Performance Check are the positive resp. negative peak – Go to Run Self-Test and press SELECT. DC levels of the input signal according to Make sure the instrument passes all tests. the results from SIGNAL CHECK. – Press any key to continue. –...
  • Page 43 Performance Check It will take a while depending on how – Press TIE, SAVE/RECALL and SE - many stored measurement samples there LECT. Note the text at Screen 3. It should are to process. read TDEV. – Press TIE to restore the original TIE –...
  • Page 44 Performance Check Test Measurement Finish the performance check by setting up and performing a 2-hour measurement on the phase-locked LF generator. Then you can ob - serve the natural wander of a clock with close relation to the internal reference clock in the Wandermeter.

  • Page 45: Preventive Maintenance

    Chapter 7 Preventive Maintenance...

  • Page 46: Calibration And Adjustment

    Preventive Maintenance How often should you Calibration and calibrate? Adjustment Although a Rubidium oscillator is extremely stable, it still exhibits small but measurable ag - ing. See the specifications in Chapter 8. If the instrument has not been continuously connected to mains power during at least 24h, Depending on what you are going to measure, the automatic calibration process will not start the calibration intervals can span the range...
  • Page 47 Preventive Maintenance – Lift the lid. You have to apply some force, as the lid is grounded to the frame with friction clips. The battery cell is located on the small PCB behind the RS-232 connector to the right on the rear panel, if you are facing the front of the instrument.
  • Page 48 Preventive Maintenance This page is intentionally left blank. 7-4 Backup Battery...

  • Page 49: Specifications

    Chapter 8 Specifications...

  • Page 50: Technical Specification

    Note 1: Specifications apply after 30 minutes completed measurement in warm-up time. Local Mode ADEV: ADEV is calculated from Note 2: Specifications apply to both WM-10 the measured and stored TIE and WM-11 where not explicitly denoted. values and displayed after completed measurement in Operation Modes...
  • Page 51 Specifications Amplitude: inside -5V…+5V Measuring Time Signal type Time: Short (30 min, 2h, 4h), WM-10: Symmetrical pulse Long (24h) and Continuous (Clock signal) Start/Stop: A new measurement is HDB3-coded data initiated by pressing (Data signal) START/STOP. Confirm by WM-11: Symmetrical pulse pressing SELECT.
  • Page 52 AUTO/MAN on demand. rubidium oscillator No of div: 8x10 (vert. x horiz.) Freq. stability: See timebase oscillator spec. Masks WM-10:MTIE and TDEV masks Output levels: Fixed TTL: according to selected test low <0.4V mode: PRC (ETSI), high >1.8V into 50 W...
  • Page 53 Specifications Unlimited number of user 1.544/2.048 MHz defined MTIE+TDEV masks Clock Output (WM-11) File save/retrieve: Connector: Any graph can be saved, Ref. frequency: 1.544/2.048 MHz sq. wave printed out and retrieved. Freq. stability: See timebase oscillator spec. You can also save data in a Jitter: <0.01 UI format suitable for import to...

  • Page 54: Ordering Information

    1 Cable Connector for DC supply (WM-11) EN 55022B EN 61000-6-2 CE Option (factory built-in) Power Supply Option 35: Dual 2.048 MHz clock output WM-10 & WM-11 for WM-10 Line voltage: 100 to 240 Vrms ±10% Optional Accessories 47 Hz to 63 Hz, <60 W WM-11...

  • Page 55: Program Commands

    Chapter 9 Program Commands...

  • Page 56: Remote Control

    Remote control and programming reference for Example: the Pendulum Wandermeters WM-10 or SEND ® FETCH? WM-11. SEND ® means that you should write your program so that it will output the succeeding First-Time Installation of the string to the serial port.
  • Page 57 This is a separator between selectable items. books about SCPI programming. Useful infor - This means that you must choose only one of mation can also be found in the Pendulum the items (exclusive or). Example: 1|2 means CNT-80/81/85 Timer/Counter/Analyzers Pro - you can type either 1 or 2.
  • Page 58 Program Commands mands and queries, to the instrument. In some *RST situations it is needed to synchronize the execu - Reset tion of the programming sequence with the ac - tions in the controller. This is done by adding the *SRE and *SRE? *OPC? at the end of the command sequence.
  • Page 59 Program Commands :SENSe:FUNCtion “TINTerval 1,2” Select Differential Wander :SYSTem:COMMunicate:SERial: TRANsmit:PACE XON|NONE Activate/Deactivate SW handshake :SYSTem:MASK:DELete Delete Mask :SYSTem:MASK:MTIE|TDEV:READ? Get MTIE / TDEV Mask :SYSTem:MASK:MTIE|TDEV:WRITe Set MTIE / TDEV Mask :SYSTem:MASK:NAME:READ? Get Name of Mask :SYSTem:MASK:NAME:WRITe Set Name of Mask :SYSTem:UPTime? Check Operating Time :TRACe:DATA? CH1|MEMStore Fetch Data Array - TIE...

  • Page 60: Command Reference Guide

    Program Commands Command Reference Guide Timing Commands Stop Measurement :ABOR Purpose: Abort all activities and enter Idle State. Syntax: :ABORt<nl> Initiate Measurement :INIT Purpose: Start measurement or delayed measurement, depending on whether a start delay command has been sent prior to the :INIT command or not. Syntax: :INITiate<nl>...
  • Page 61 Program Commands Syntax: :ARM:TIMer_<numeric value><nl> Switch off Pacing :TRIG:SOUR IMM Note: Possible but not recommended measurement mode. Syntax: :TRIGger:SOURce_IMMediate<nl> Switch on Pacing :TRIG:SOUR TIM Purpose: Try to keep the time between measurements constant. It is recommended to send this command be- fore starting a measurement.
  • Page 62 Program Commands Activate Remote Mode :DISP:MENU REM Purpose: Switch on remote mode; no graphics and few digits. Syntax: :DISPlay:MENU_REMote<nl> Functional Mode Commands Signal Check :SENS:AUTO ONCE Purpose: Check the signal(s) at the input(s) before start of measurement to find and set optimum trigger lev - els.
  • Page 63 Program Commands Response format: <ss><nl> The number of seconds is an integer. Input Settings Commands Get Input Trigger Level :INP1LEV? :INP2LEV? Purpose: Query returning the current input trigger level. Syntax: :INPut’1|2’LEVel?<nl> Response format: <numeric value><nl> Get Input Trigger Slope :INP1:SLOP? Purpose: Query returning the current trigger slope for CLOCK/DATA IN A.

  • Page 64: Mask Commands

    Program Commands Set Input Trigger Slope :INP1:SLOP POS :INP1:SLOP NEG Purpose: Set the circuitry for the CLOCK/DATA IN A input to trigger on either the leading or the trailing edge of the input signal. Syntax: :INPut1:SLOPe_POSitive|NEGative<nl> Interface Commands Activate/Deactivate Software Handshake :SYST:COMM:SER: TRAN:PACE Purpose:...
  • Page 65 5 MHz 10 MHz Video (15.625 kHz, 15.750 kHz, 27MHz) 34 Mbit/s 45 Mbit/s 52 Mbit/s Only Signal Group 1 is applicable to the WM-10. Get MTIE/TDEV Mask :SYST:MASK:MTIE:READ? :SYST:MASK:TDEV:READ? Purpose: Fetch an MTIE or TDEV mask from the instrument.
  • Page 66 Program Commands Set Name of Mask :SYST:MASK:NAME:WRIT Purpose: Give the MTIE/TDEV mask with the specified mask number a name. Syntax: :SYSTem:MASK:NAME:WRITe_<mask #>,<signal group #>,"string"<nl> Mask number is 1, 2, 3 or 4. The name must be within quotation marks and no longer than 13 charac - ters.
  • Page 67 Program Commands Syntax: :TRACe[:DATA]?_CH1|MEMStore<nl> (get TIE values array) The MEMStore parameter is used for retrieving data from the RAM having battery backup. The TIE values occupy max. 16000+ values. Example: SEND ® :TRACe?_CH1<nl> This example shows a request for TIE values array data. Response format: <header><binary block><nl>...
  • Page 68 Read out the manufacturer, model, serial number and firmware level, as an ASCii response data ele- ment. Note: The query must be the last one in a program message. Syntax: *IDN? <nl> Response format: <Manufacturer>,<Model>,<Serial Number>,<Firmware Level>_<date><nl> Example: SEND ® *IDN?<nl> READ ¬ Pendulum, WM-10, 123456, V1.01 16 Feb 2001<nl> 9-14 Command Reference Guide...
  • Page 69 Program Commands Protected User Data *PUD? Purpose: Write any data up to 64 characters in a special memory area. Note: The data can always be read, but you can only write data after unprotecting the data area. A typical use would be to hold owner/user name, usage time, inventory control numbers, etc. Syntax: *PUD?<nl>...
  • Page 70 Program Commands Reset *RST Purpose: Resets the instrument to the same state as after Recall Default Setup via the keyboard. Note: Baudrate is not affected by this command Syntax: *RST<nl> Example: SEND ® *RST<nl> Self-Test *TST? Purpose: The self-test query causes an internal self-test and generates a response indicating whether or not the device completed the self-test without any detected errors.
  • Page 71 Program Commands Response format: <Integer><nl> = the sum (between 0 and 255) of all bits that are true. See table below: <Integer> Status 128 (Bit 7) Measurement started 64 (Bit 6) Master Summary Status 32 (Bit 5) A bit in the standard event status register is set 16 (Bit 4) Message available ( always set ) 8 (Bit 3)
  • Page 72 Program Commands In this example, a query error has occurred. Clear Status Command *CLS? Purpose: The *CLS command clears the status data structures by clearing all event registers and the error queue. It does not clear enable registers. It clears any pending *WAI, *OPC and *OPC? Syntax: *CLS<nl>...
  • Page 73 Program Commands Response format: <dec.data> = the sum (between 0 and 255) of all bits that are true<nl> Example: SEND ® *ESE?<nl> READ ¬ 4<nl> In this example, only the query error enable bit is set. Option Query *OPT? Purpose: Lists the options of the instrument.
  • Page 74 Program Commands <Integer> Status 128 (Bit 7) Measurement started 64 (Bit 6) Request Service 32 (Bit 5) Event status bit 16 (Bit 4) Message available 8 (Bit 3) Not used 4 (Bit 2) Error available 2 (Bit 1) Not used 1 (Bit 0) Not used Example:...

  • Page 75: Index

    Chapter 10 Index...
  • Page 76 Index Index :SENS:AUTO ONCE... . 9-8 :SENS:FUNC “TIE 1” ... 9-8 * Commands ....9-14 *CLS? .
  • Page 77 Index ADEV ..... . 5-12 ADEV Data ....5-9 Easy to Use .
  • Page 78 Index Graphs in WanderView ..5-9 MTIE..... 4-3,4-8 Grounding ....2-3 MTIE Data.
  • Page 79 Index Remote Mode ....1-3 Stop Measurement ... . . 9-6 Remote/Local Commands ..9-7 Supply Voltage .
  • Page 80 Index WanderView Screen ... . 5-3 WanderView SW ....5-2 Warm-Up Time ....4-5 Window Menu .

  • Page 81: Service

    Chapter 11 Service...

  • Page 82: Sales And Service Office

    Sales and Service Office For additional product information, customer support and service, please con- tact Pendulum Instruments AB at the following addresses: Mail: Pendulum Instruments AB Box 20020 SE-161 02 Bromma Sweden Visitors: Karlsbodavägen 39 Bromma, Stockholm Sweden Goods delivery: Adolfsbergsvägen 2...

  • Page 83: Guarantee Statement

    Buyer and the supplier and according to local legislation. Pendulum Instruments AB guarantees this product to be free from defects in material and workman- ship under normal use and service for a period of eighteen (18) months from the date of shipment.
  • Page 84 This page is intentionally left blank.

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