User Manual WFM700 Series Waveform Monitors 071-0916-08 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - FAX 781.665.0780 - TestEquipmentDepot.
Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Related Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v v Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard Accessories . . . . . . . . . . . .
Table of Contents Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sweep Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vector Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Personal Injury Use Proper Power Cord. Use only the power cord specified for this product and certified for the country of use. Ground the Product.
General Safety Summary Symbols and Terms Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. Terms on the Product. These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the marking.
Preface This user manual provides the basic information you need to install and operate the WFM700 Series Waveform Monitor. Listed below are related documents that contain information about the instrument. Related Reference Documents The following reference documents are available: H WFM700 Series Release Notes (English). Describes both the new features provided by a firmware release and any known problems or behaviors that you might encounter while using the waveform monitor.
Preface Non-English Language Documents The following non-English language documents are available: H WFM700 Series User Documentation Package (Japanese). Contains a printed Japanese language user manual and the CD-ROM described on the previous page. H WFM700 Series User Documentation Package (Korean). Contains a printed Korean language user manual and the CD-ROM described on the previous page. www.tektronix.com f Web vi ( la d r f re e . ktr c : ume r ila a the Te I .
Getting Started
Getting Started This section contains a list of accessories, an installation procedure, and a functional check to verify the primary functions of your waveform monitor. For instrument specifications, refer to the WFM700 Series Technical Reference document on the CD-ROM. Product Description The WFM700 waveform monitor is designed to meet the multi-format monitoring and measurement needs of digital video for program production, post-production, and transmission.
Getting Started Standard Accessories Listed below are the standard accessories shipped with each waveform monitor: Documents Power Cords 1- 2 The following documents are shipped with each waveform monitor: H WFM700 Series Release Notes, Tektronix part number 061-4247-XX. H WFM700 Series User Documentation Package, Tektronix part number 020-2532-XX. This package contains the following items: H WFM700 Series User Manual, Tektronix part number 071-0916-XX.
Getting Started Table 1- 1: Power cord options and identification Plug configuration WFM700 Series Waveform Monitors User Manual Normal usage Option number Tektronix part number North America 120 V Standard 161-0216-00 Universal Euro A1 161-0215-00 United Kingdom A2 161-0066-10 Australia A3 161-0066-11 Switzerland A5 161-0154-00 Japan A6 161-A008-00 China AC 161-0304-00 No power cord supplied.
Getting Started Optional Accessories If you ordered any of the following optional accessories, they were shipped with your waveform monitor. Additional Inputs You can add any of the following video or audio modules to a unit: NOTE. You can have a maximum of two video modules and one Option DG audio module installed. Cabinets Documents 1- 4 H WFM7HD. Serial digital video monitor module for HD. H WFM7A. Serial digital video monitor module for SD and HD. H WFM7M.
Installation and Power On This section contains information about installing and powering on the waveform monitor. Instructions for performing firmware upgrades are located in the WFM700 Series Technical Reference document on the CD-ROM. Hardware Installation NOTE. Instructions for installing or removing the waveform monitor from a cabinet, and for adding or removing a module from the instrument are located in the WFM700 Series Technical Reference document on the CD-ROM.
Installation and Power On Connecting Power The waveform monitor operates from a single-phase power source with the neutral conductor at or near earth ground. The line conductor is fused for over-current protection. A protective ground connection through the grounding conductor in the power cord is essential for safe operation. WARNING. To avoid serious personal injury from electric shock, do not operate the instrument with the cover removed.
Operating Basics
Functional Overview The instrument is controlled through a combination of front-panel controls (buttons and knobs) and touch-screen controls (soft keys), as described on the following pages. The waveform monitor front panel is shown in Figure 2--1.
Functional Overview Front Panel Knobs and Indicators Table 2--1 describes the knobs and indicators on the waveform monitor: Table 2- 1: Front-panel knobs and indicators Knob / Indicator Description General purpose knob Located in the upper right corner of the front panel, navigates among menu choices or changes values, depending on the feature you are currently using. In general, the knob continues to perform the assigned function until you select a different feature.
Functional Overview Table 2- 2: LED fault codes State ON/STBY LED Fault LED Main power relay Standby Off Off Off No power. Press the ON/STBY switch for normal operation. Check that the instrument power cord is plugged into the local power supply. On On Off On Normal operation. Cold Flashing Off On The LCD may be damaged if operated at low temperatures. If the internal temperature sensors detect a low temperature, this fault code will be asserted.
Functional Overview Front-Panel Buttons Refer to Menus beginning on page 2--11 for a description of the menus accessed by pressing the front-panel buttons. Table 2--3 describes the different categories of front-panel buttons.
Functional Overview Touch Screen (Soft Keys) Use the touch screen to select choices from a menu and to access additional instrument menus. “Buttons” that appear on screen are referred to as soft keys and change with the instrument mode. The soft keys function as follows: H Some soft keys toggle between two settings, such as enable and disable. H Some soft keys act as a linked group in which only one button can be selected at a time (mutually exclusive).
Functional Overview Table 2- 4: Readout descriptions (Cont.) Readout Location Description Magnification (Mag) Lower center Text indicates the mag setting. If mag is on, the text appears in yellow to indicate that the signal is not being displayed in the normal time scale. Sweep rate Lower center Text indicates the selected sweep rate. Closed caption presence Upper left When the instrument detects the presence of a closed caption signal, CC is displayed on the screen.
Functional Overview Icons On-screen icons inform you that an error condition exists or an instrument operation is in progress. The icons are: Icon Name Description Video Alarm / Error Indicator (Red) Appears at the top-middle of the screen when video alarms have triggered and remains until just after the last alarm or error condition is resolved (cleared).
Functional Overview Rear Panel Connectors The rear-panel connectors are shown in Figure 2--2 and described in Table 2--5.
Functional Overview Table 2- 5: Rear-panel connectors Connector(s) Description Power This instrument is intended to operate from a single-phase power source with one current-carrying conductor at or near earth ground (the neutral conductor). Only the Line conductor is fused for over-current protection. The fuse is internal, on the Power circuit board.
Functional Overview Table 2- 5: Rear-panel connectors (Cont.) Connector(s) Description Multi-pin connectors The waveform monitor provides the following multi-pin connectors: VGA PIX MON. A copy of the PIX G/Y, B/Pb, R/Pr pix mon outputs. This allows using an inexpensive VGA monitor for non-critical HD applications. Most computer monitors will not lock to 50 Hz vertical rates or to Standard Definition line rates, so this may not work in all applications. EXT VGA.
Menus This section describes the various menus you can access in the instrument and provides menu diagrams showing the location of the available selections. The menu diagrams are organized in alphabetical order. Refer to the WFM700 Series Technical Reference document on the CD-ROM for a detailed description of each menu selection. Making Menu Selections The menu system uses several different methods for entering measurement and monitoring parameters.
Menus Using the Menu Diagrams The menu diagrams contain the following components (see Figure 2--3): 1. A partial illustration of the instrument front panel, highlighting the frontpanel button you select to enter the displayed menu. 2. Menu names, shown in bold text. 3. Unique submenus, connected with a dashed line. These soft keys appear only when a certain mode, such as Arrowhead, is selected. 4. A list of menu soft keys that are displayed on the touch screen.
Menus Audio Menu (Option DG Only) Press the AUDIO button to enter the Audio mode. If your instrument has only video modules installed, the instrument displays the Embedded Audio Status screen and has no menu. If your instrument has the Option DG audio module installed, the Audio menu shown in Figure 2--4 is displayed.
Menus Configure Menu Press the CONFIG button to open the Configure menu, which is shown in Figures 2--5 through 2--7. The configuration parameters for the instrument are grouped into functional submenus within the Configure menu. Use the general purpose knob and/or the touchscreen to navigate within the menu. CAUTION. To prevent a misadjustment of the instrument, do not use the adjustment menu selections in the Calibration submenu without referring to the WFM700 Series Service Manual (Tektronix, Inc.
Menus Configure menu continued from Figure 2-- 5 Vec I/Q Axis: Off | On | On (if SD) Vec Compass Rose: Off | On Wfm Graticule Units (non-50 Hz): Auto | mV | IRE | % Full-Scale Grat / Gamut Default Setup Gamut Threshold Default: Tek | EBU-R103 Closed Caption Display: Enabled | Disabled Closed Caption Type: Auto Detect | EIA-608 (VBI) | EIA-608 (ANC) | EIA-608 (708) Closed Caption Service (608): CC1 | CC2 | CC3 | CC4 | TEXT1 | TEXT2 | TEXT3 | TEXT4 VBI Captions Line Number: Auto Detect | Line < . . .
Menus Configure menu continued from Figure 2-- 6 AES Connectors: Input | Output Audio Program Type: Stereo Pairs | Surround HELP AES Alarms: Change AES Alarm PRINT Audio Inputs/Outputs (Option DG audio module only) Embedded Alarms: Change Embedded Alarms AES Input Map: Change AES Input Map Embedded Groups Embedded Input Map: Change Emb.
Menus Configure menu continued from Figure 2-- 7 Print Layout: Portrait | Landscape Print Format: Postscript COLOR | Postscript B&W HELP Paper Size: A4 | Letter Printing/Event Log PRINT LPD Print Server IP Address: Press to Edit IP Address LPD Print Queue Name: raw | Press to Edit Queue name Ink Saver: On | Off When Event Log Full: Overwrite Old Events | Stop Logging Event Log Storage Mode: Log for Resolution | Log for Duration FREEZE Config Mode: Manual Mode | DHCP Server DISPLAY IP Address: Press
Menus Cursor Menu If the instrument is in a mode that supports measurement cursors (Waveform, Eye, or Jitter modes), the Cursor menu shown in Figure 2--9 is displayed when you press the CURSOR button. The cursor 1 and 2 settings, and the difference between the two, are shown in the readout in the upper right part of the screen. SWEEP Voltage | Time | Voltage + Time GAIN V+T Control Cursor 1 < . . . > CURSOR Cursor 2 < . . .
Menus Display Menu Press the DISPLAY button to open the Display menu shown in Figure 2--10. Use the Display menu to adjust various display parameters. HELP Thumbnail Picture PRINT Trace Settings Waveform < . . . > Color: Green | White Done Graticule Settings Intensity < . . .
Menus Eye Menu (WFM700M Only) Press the EYE button to enter the Eye mode and display the Eye menu shown in Figure 2--11. Refer to Eye Mode (WFM700M Only) on page 3--17 for more information about using the Eye and Jitter measurement displays. VIEW WFM VECTOR STATUS PICTURE MEASURE Physical Display Menu Eye Jitter Event Log Done Eye Meas: Off | On GAMUT EYE 3 Eye Display 10 Eye (SD signals) 20 Eye (HD signals) Clock BW : < . . .
Menus Freeze Menu Press the FREEZE button to open the Freeze menu shown in Figure 2--12. Freeze Mode lets you: H Capture (freeze) the active signal and hold it in the Capture buffer. H Display the frozen signal or the live signal. H Compare the frozen signal and the live signal by selecting Display Both. NOTE. The Freeze function for the Data display in Measure mode freezes only the data waveform (left side of screen).
Menus Gain Menu Press the GAIN button to display the Gain menu shown in Figure 2--13. The current gain setting is displayed in the lower left corner of the screen. The gain setting is displayed in yellow if variable gain is active. In variable gain modes, use the general purpose knob to set the gain. The variable gain modes work together with the fixed settings. For example, touch the 1x soft key, touch the Variable Gain soft key, and then turn the general purpose knob to select a setting of 1.50x.
Menus Gamut Menu Press the GAMUT button to enter the Gamut mode and display the Gamut menu shown in Figure 2--14. Use the Gamut menu to view the Diamond, Split Diamond, or Arrowhead displays, and to set the gamut measurement limits. Refer to Gamut Measurements on page 3--27 for more information. VIEW WFM VECTOR STATUS PICTURE MEASURE Diamond Diamond: Standard | Split GAMUT EYE Set RGB Thresholds RGB Limit Menu AUDIO RGB High: < . . .mV > RGB Low: < . . .mV > Horizontal | Horz + Vert Area: < . .
Menus Help Menu Press the HELP button to display online help about the current operating mode and to display system information such as the software version, the installed options and board versions, and the network parameters (see Figure 2--15). HELP Button Finder Help Menu PRINT System Info System Info Software Version Installed Options Network Params FREEZE DISPLAY Figure 2- 15: Help menu diagram Input Menu Press the INPUT button to display the Input menu shown in Figure 2--16.
Menus Line Select Menu Press the LINE SEL button to enable the Line Select mode and open the menu shown in Figure 2--17. Operating modes that support the line select function are Waveform, Vector, Gamut, Jitter, Eye, and Data. Refer to Line Select Mode on page 3--31 for more information. SWEEP GAIN CURSOR All Fields Field: 1 of 2 | 2 of 2 LINE SEL Line Select Menu Line < . . . > INPUT Sample < . . .
Menus Measure Mode Menu (WFM700A and WFM700HD Only) For instruments with only WFM7A and/or WFM7HD video modules installed, press the Measure button to access the Bowtie mode. Refer to Bowtie Mode on page 3--14 for more information. Measure Mode Menu (WFM700M Only) To access the Measure menu, you must have a WFM700M or an instrument with a WFM7M module installed. Press the MEASURE button to open the Data menu shown in Figure 2--18.
Menus Multi Menu Press the MULTI button to enter Multi mode, which displays the Multi menu shown in Figure 2--19. Multi mode shows two different views of the same input signal side-by-side. You must use the Input menu to select a different input signal to display. Refer to Multi Mode on page 3--34 for more information.
Menus Picture Menu Press the PICTURE button to enter the Picture mode. Picture mode displays a full screen representation of the video signal present at the selected input. After you enter the Picture mode, press the PICTURE button again to toggle the Picture menu shown in Figure 2--20 on and off. Use the Safe Area soft key to turn the Safe Action and Safe Title graticules on and off. The safe area graticules do not appear in the thumbnail picture.
Menus Preset Menu Press the PRESET button to open the Preset menu shown in Figure 2--21. The Preset menu allows you to store and recall instrument configuration settings. There are 42 user-programmable presets available in addition to the Restore Factory preset. You can designate up to four presets as shortcuts. To help you remember the functionality of the the presets you have created, you can assign names to the presets using up to eight characters.
Menus Print Menu When you press the PRINT button, the Abort Printing soft key appears. Press this soft key to abort the print request. Status Menu Press the STATUS button to enter the Status display mode, which displays the Status menu shown in Figure 2--22.
Menus Sweep Menu Press the SWEEP button while in Waveform mode to display the Sweep menu shown in Figure 2--23. The Sweep menu is also functional in the Vector and Eye operating modes.
Menus Vector Menu Press the VECTOR button to enter the Vector mode and display the Vector menu shown in Figure 2--24. Refer to Vector Mode on page 3--40 for more information. Lightning VIEW WFM Vector Menu Vector VECTOR STATUS PICTURE MEASURE GAMUT EYE Graticule: Component | Composite Setup: 0% | 7.
Menus Waveform Menu Press the WFM button to open the Waveform mode and display the Waveform menu shown in Figure 2--25. Refer to Waveform Mode on page 3--44 for more information. Waveform Menu VIEW Parade | Overlay WFM VECTOR STATUS PICTURE MEASURE GAMUT EYE Y* R (Pb)* G (Pr)* B* Setup < . . .
Reference
Reference NOTE. Refer to Related Reference Documents on page vi for a list of reference documents that are available on the WFM700 Series User Documentation CD-ROM located on the back cover of this manual and/or at the Tektronix, Inc. Web site (www.tektronix.com).
Reference Alarms Use the Configure Alarms submenu of the Configure menu to select which error conditions you will monitor and how you will be notified in the event of an error. The alarms are organized into the following groups to help you locate a desired alarm: General, Serial, Audio (Option DG only), Auxiliary, and Physical (WFM700M only). The top level of the submenu display shows which notification methods are enabled.
Reference Viewing Alarm Status Error Detection Limitations Use the Status Display mode to view current alarm conditions. Use the Event Log to view past alarm conditions. Refer to Status Displays on page 3--37 and Logging on page 3--32 for more information. When the instrument is in the Eye / Jitter operating mode, all enabled alarms are detected and reported except for the following alarms: RGB Gamut, Composite Gamut, and Closed Caption Presence.
Reference Ancillary Data Display The Ancillary Data display (see Figure 3--1) shows the raw (undecoded) data words in the selected ancillary data packets. The ancillary data is shown only in hexadecimal format. Since the display is updated at approximately 2-second intervals, rapid data changes cannot be detected. Use the DID and SDID/DBN soft keys in conjunction with the general purpose knob to select the DID and/or SDID values for the type of ancillary data packet to be monitored.
Reference Table 3- 1: DID and SDID values for common ancillary data types Ancillary data type DID value SDID value ARIB TR-B22, Sub Information of transmitting materials 0x5F 0xE0 ARIB TR-B23, Line 20 User Data - 1 0x5F 0xFC ARIB TR-B23, Line 20 User Data - 2 0x5F 0xFB Video Payload Identifier 0x41 0x01 ARIB STD-B35 Trigger Signal for Data Broadcasting 0x5F 0xFD ARIB STD-B37 Closed Captioning Analog signal SD signal HD signal 0x5F 0x5F 0x5F 0xDD 0xDE 0xDF ARIB STD-B39 Inter Stationary
Reference ARIB STD-B39 Display The ARIB STD-B39 display (see Figure 3--2) shows the decoded data for video signals using ancillary data compliant with ARIB STD-B39. When this display is selected, the instrument searches the signal for ARIB STD-B39 packets using the DID/SDID combinations defined by one of the following standards organizations: ITU or ARIB. Use the Grat/Gamut Default Setup submenu of the Configuration menu to select which standard is used.
Reference Audio Mode For instruments with only video modules installed, Audio mode provides a protocol-level check for the AES stream. The Embedded Audio Status screen reports the following information: H Which video input is the source of the embedded audio H The standard used by the audio signal H Whether the header indicates that audio is present on each pair of channels (Status = Present or Not Present) Audio Mode (Option DG Only) NOTE.
Reference Selecting the Audio Display Type Elements of the Level Meters + Lissajous Display Use the Display soft key to select one of the following audio displays: H Level Meters H Level Meters + Lissajous H Surround Sound H Channel Status H Embedded Audio Status When you select the Level Meters + Lissajous display (see Figure 3--3), the left portion of the screen displays the level meters and the right portion of the screen displays the Lissajous display (also known as a phase plot).
Reference Selecting the Channel Pair for the Lissajous Display To select which channel pair is displayed on the Lissajous display: NOTE. The channel pair labels depend on the Audio Program Type setting (surround or stereo pairs). 1. Touch the Lissajous Pair: soft key to open the Audio Lissajous Pair menu. 2. Select a channel pair by performing one of the following actions: H Touch the soft key for one of the four default channel pairs.
Reference Elements of the Surround Sound Display When you select the Surround Sound display (see Figure 3--3), the left portion of the screen displays the level meters and the right portion of the screen displays the Surround Sound display. Use the Audio Displays submenu of the Configure menu to enable or disable the Dominance indicator and to select the type of Surround Sound filter: Linear (RMS) or A-weighting. NOTE. Audio Surround Sound display courtesy of Radio-Technische Werkstaetten GmbH & Co.
Reference Interpreting the Surround Sound Display The Surround Sound display indicates the audio level balance among the left (L), right (R), left-surround (Ls), and right-surround (Rs) channels as cyan lines on the ruled scales radiating from the center. The scale has tic marks at 10 dB intervals. An additional tic mark indicates the --18 dB level. The --18 dB and --20 dB levels are typically used for aligning audio levels.
Reference Figure 3--5 shows examples of how the Surround Sound waveform appears for some typical signal types. Uncorrelated signals; same level in the L, R, Ls, and Rs channels. Sine wave test tone; same level in the L, R, Ls, and Rs channels. All signals are in phase, creating phantom sources between the adjacent channels. Sine wave test tone; same level in the L, R, Ls, and Rs channels. Channels R, Ls, and Rs are in phase, creating phantom sources between the adjacent channels.
Reference Channel Status Display Embedded Audio Status Display The Channel Status display shows the channel status information, for one channel pair at a time, that is embedded in the AES3--1992 (professional) or IEC--60958-3 (consumer) digital audio channels. You can select from the following four display formats: Text, Binary, XMSN Order Binary, or Hex.
Reference Bowtie Mode The Bowtie display evaluates the relative amplitude and timing between the three video channels. To access the Bowtie mode, press the MEASURE button, touch the Measure Menu soft key, and then touch the Bowtie soft key. The Bowtie display requires a special test signal to be sent from the monitored source. The Tektronix TG2000 Signal Generation Platform can produce a Bowtie test signal with 20 ns time marks, which aid in signal evaluation.
Reference Composite Display The instrument provides a composite representation of both SD and HD component signals. To access the composite display, set the color space to composite in Waveform mode or select Composite Graticule in Vector mode. Data Display (WFM700M Only) The Data Display mode shows the actual SD or HD input data without any interpolation. Data Display Colors and Units Different fields of the data stream are shown in different colors, as shown in Table 3--2.
Reference Diagnostics The waveform monitor provides diagnostics capabilities, which are accessed through the System submenu of the Configure menu. You can view or print the Diagnostics Log, which contains the results of the last diagnostic test that the instrument performed. You can also download the Diagnostic Log using the Remote Web Interface.
Reference Eye / Jitter Mode (WFM700M Only) Press the EYE button to access the Eye / Jitter menu and measurements. Making Eye Measurements The Eye pattern display presents a voltage-versus-time waveform composed of multiple sweeps of the SD or HD serial bit stream. You can set the sampled eye pattern to display either a full word of correlated data (10 Eye display in SD; 20 Eye display in HD) or a three-data-bit overlay showing jitter uncorrelated to the parallel word (3 Eye display).
Reference Automatic Eye Measurements. When the Eye display is selected, you can use the Eye Meas. soft key to turn on or off a readout that displays automatic measurements of the eye waveform (see Figure 3--7). The measurement readouts are colored red when the eye waveform exceeds the defined thresholds. Use the Set Default Thresholds soft key to set the eye measurement thresholds to the levels defined by the associated standard (SD signals: SMPTE 259M; HD signals: SMPTE 292M).
Reference Eye measurement readouts Rise overshoot peak indicator Upper signal level indicator Waveform histogram 80% signal rise level indicator Waveform shape indicator (20-- 80% signal level) 80% signal fall level indicator Lower signal level indicator Fall overshoot peak indicator Figure 3- 7: Eye display showing the automatic measurements Measurement Accuracy Using the Measurement Cursors.
Reference Manually Measuring Amplitude. The following procedure shows you how to manually measure the signal amplitude using both the graticule and the Voltage Cursors. 1. Perform the initial settings for Eye measurements described in Setup for Eye Measurements above. 2. Use the CLOCK BW soft key to select the 1 kHz filter. This setting reduces the effects of timing jitter, which can obscure the amplitude measurement. 3. To measure amplitude, use the graticule (1x gain) or use the voltage cursors.
Reference Manually Measuring Rise Time. Rise time measurements of the eye waveform check the performance of sources and signal degradation by cabling. The following procedure provides two methods for manually measuring rise time. The first method uses variable gain to normalize the signal and the second method uses the percentage voltage cursors. 1. Perform the steps in Setup for Eye Measurements on page 3--17. 2. Method 1 -- Use variable gain to measure rise time. a.
Reference 3. Method 2 -- Use the percentage voltage cursors to measure rise time: a. Turn on the voltage cursors and set the voltage cursor units to %. b. Position the first voltage cursor to the top of the signal, and then position the second voltage cursor to the bottom of the signal. c. Touch the Set 100% soft key. d. Position the first voltage cursor to where the readout lists 80%, and then position the second voltage cursor to where the readout lists 20%. e.
Reference Making Jitter Measurements The Jitter display mode plots jitter versus time as a trace and measures peak-topeak time jitter on the active input signal. The Jitter mode converts any phase modulation to amplitude and plots it against time. Timing jitter is the deviation of signal transitions compared to those of a reference clock. Jitter results in Eye closure along the time axis, narrowing the window in which the data values can be accurately determined.
Reference Using Line Select. When Line Select is off, the jitter measurement reflects the maximum amount of jitter in the full field. When Line Select is on and Line sweep is selected, the jitter measurement displays “line n jitter,” with n being the selected line number. The jitter measured on an individual line will always be equal to or less than the full field jitter measurement. Bandwidth Filters. The waveform monitor provides four bandwidth filters: 10 Hz, 1 kHz, 10 kHz, and 100 kHz.
Reference Reporting Jitter Measurement Errors. When enabled in the Physical Alarms submenu of the Configure menu, the Jitter alarm will be reported to the Event Log in only the following two conditions: H When the Jitter display is selected H When the Event Log or Alarm Status displays are selected after the Jitter display is selected That is, if you enter the Jitter display and then use the STATUS button to view the Event Log or Alarm Status displays, the jitter measurement alarm will be active.
Reference Measurement Accuracy Using the Measurement Cursors. If you use the measurement cursors to measure jitter, you may measure a different result than that shown in the jitter measurement box for the following reasons: H The internal peak detector does a better job of measuring jitter excursions than a human can when using their naked eye to position the cursors H The noise floor is removed from the jitter measurement readout but not from the cursor delta readout Manually Measuring Timing Jitter.
Reference Gamut Measurements NOTE. Gamut error detection is disabled in Eye and Jitter display modes. The waveform monitor features three types of gamut displays: H The Diamond display shows the relationship between the R, G, and B video signals. The waveform monitor converts the Y, Pb, and Pr components of the signal into R, G, and B to form the Diamond display.
Reference Example A: Example B: Example C: R - Ok G > 700 mV B - Ok R - Ok G - Ok B > 700 mV R - Ok G - Ok, 350 mV B < 0 mV Figure 3- 10: Out-of-gamut signals on a Diamond display Checking Composite Gamut The Arrowhead display shows out of gamut conditions in composite color-space, without requiring a composite decoder. The display plots luminance on the vertical axis, with blanking at the lower left corner of the arrow.
Reference 100 IRE 110 IRE 120 IRE 131 IRE High Luma limit 100 % High Composite limit Luma amplitude 7.
Reference Setting Gamut Alarm Limits Listed below are general guidelines for setting gamut alarm limits for the Diamond and Arrowhead displays. Default Thresholds. Use the Grat / Gamut Default Setup submenu of the Configure menu to select the standard used for default gamut thresholds: Tek or IBU-R103. The Tek thresholds are the default gamut thresholds historically used by video monitoring equipment made by Tektronix, Inc. and are not intended to conform to an officially accepted video standard. NOTE.
Reference Filtering. Two filters allow you to accept overshoot that would otherwise be reported as a gamut error. Overshoot occurs due to the unequal rise time of the chroma and luma inherent in the YPbPr signal. Use the Horizontal filter setting to monitor for out-of-gamut errors within a single horizontal line using a low-pass filter (SD: < 1 MHz, HD: < 1.2 MHz).
Reference Logging The instrument contains two different log files: diagnostics and events. You can use the Remote Web Server interface to download the contents of either log file. Diagnostics Log Event Log This log contains the results of the last diagnostic test that was performed. The instrument maintains an event log in which every entry is time-stamped with the time-of-day when the instrument logged the event.
Reference Configuring the Event Log Full Condition. Use the Printing/Event Log submenu of the Configure menu to configure the instrument to either stop logging events or to overwrite events when the event log has filled up to the 10,000 entry level. Viewing and Printing the Event Log. You can view the Event Log using the Status menu or using the Remote Web Interface. In the Status menu, use the Configure View Filter soft key to show only the events you want to view. NOTE.
Reference Measure Mode (WFM700M Only) Press the MEASURE button to access the Data Display. The Data Display mode shows the actual SD or HD input data without any interpolation. Refer to Data Display (WFM700M Only) on page 3--15 for more information. From the Measure submenu of the Data Display menu, you can access the following three display modes: H Bowtie. Use this display to evaluate the relative amplitude and timing between the three video channels.
Reference Picture Mode Press the PICTURE button to display a full screen representation of the video signal present at the selected input. NOTE. Due to the number of pixels in the LCD display of the waveform monitor, not all of the video content (particularly in HD formats) can be reproduced with 100% accuracy by this display module.
Reference Printing NOTE. The instrument formats print output in Postscript color, or Postscript black and white formats. The selected printer must support LPD protocol. Use the Printing/Event Log submenu of the Configure menu to configure the instrument to print the following items to a printer on your local network: H Instrument display. To print the current instrument display (waveforms and text), press the Print button. NOTE.
Reference Status Displays Press the STATUS button and then touch the Display soft key to select from the following status displays: Status Display Colors Video Status and Session Display H Session. Use this selection to view the Video Status/Session, Audio Status/Session, or Auxiliary Data Status displays. H Alarm Status. Use this selection to view the status of the General, Serial, Audio (Option DG only), Auxiliary Data, or Physical (WFM700M only) alarms. H Event Log.
Reference Audio Status and Session Display (Option DG Only) The Audio Status/Session display shows the current status of the audio signal being monitored. Use the Session Stopped/Running soft key to start or stop the monitoring session. Use the Reset Session soft key to clear the display. Refer to the WFM700 Series Technical Reference document on the CD-ROM for descriptions of the status display elements.
Reference Alarm Status Displays The instrument provides the following five alarm status displays which correspond to the categories of alarms provided in the Configure menu: general, serial, audio (Option DG only), auxiliary data, and physical (WFM700M only). An “X” appears in the Enabled column for each of the enabled alarms. The Status column indicates the status of each alarm, whether or not that alarm condition has been enabled. Table 3--5 lists the status indicators that may appear.
Reference Vector Mode Press the VECTOR button to enter the Vector mode, where you can select two related displays: Vector and Lightning. Both displays have targets for determining conformance using 75% or 100% color bar signals. NOTE. Refer to the reference document A Guide to Standard and High-Definition Digital Video Measurements at the Tektronix, Inc. Web site (www.tektronix.com) for information about how the Vector and Lightning displays are created.
Reference Vector Timing Measurements. In the composite domain, the transitions between the vector end points display timing differences. Because these timing differences include the delay in the decoder output filtering, you can usually ignore them. In the component domain, there is no decoding required. Therefore, the color bar transitions contain useful timing information. These timing differences appear as looping or bowing of the transitions.
Reference Figure 3- 13: Lightning display showing proper interchannel timing 40 ns timing error 20 ns timing error Figure 3- 14: Lightning display showing interchannel timing errors 3- 42 WFM700 Series Waveform Monitors User Manual
Reference Luminance Gain Measurement. The signal is driven along the vertical axis above and below the center box by the luminance signal. The luminance gain is correct when the center dot (clamped black level) is centered in the target box and the positive and negative excursions end at the top and bottom of the graticule. Perfect monochrome signals appear as a thin vertical line. Any deviation or bending off the center line indicates a color variation from the monochrome setup of the display monitor.
Reference Waveform Mode Press the WFM button to enter the Waveform mode. In Waveform mode, the selected components are displayed in a voltage versus time plot. You can apply flat or low pass filters and choose the color space modes (such as RGB or composite). In component color space modes, you can turn the individual components on or off.
Reference Sweep. Use the Sweep menu to select from the following sweep modes: H Line. One horizontal line is displayed. Use the Line Select function to choose one line out of a field or frame. H 2 Line. (Overlay mode only) Two consecutive horizontal lines are displayed. H Field. All lines for one video field are displayed. H 2 Field. (Overlay mode only) All lines for two video fields are displayed. H Mag. Turns the Mag function on and off. NOTE.
Reference Measuring Relative Timing Between Two Serial Component Signals To measure the timing of two digital signals, use the following procedure: 1. Connect the two terminated SDI signals to be measured to Input A and Input B on the waveform monitor. 2. Select Input A to display on the waveform monitor. 3. Verify that the waveform monitor is externally referenced to a black burst or tri-level sync signal (as appropriate). 4.
Reference Figure 3- 15: XYZ pulse of Y channel with pass through selected 6. To measure horizontal timing, perform the following steps: a. Switch to Input A and set the waveform monitor to one line sweep. b. Use the horizontal position knob to set the SAV pulse to a major graticule tick mark, or use cursor mode and set a cursor on the SAV pulse. c. Compare the timing to the signal on Input B by selecting Input B and adjusting the fine timing controls to match the timing position of Input A.
Index
Index A B Aberrations, serial channel measurements, 3-- 20 AC line frequency, 1-- 6 Accessories Japanese user manual, 1-- 4 Korean user manual, 1-- 4 optional, 1-- 4 WFM7A, 1-- 4 WFM7DG, 1-- 4 WFM7HD, 1-- 4 plain cabinet, 1-- 4 portable cabinet, 1-- 4 protective front cover, 1-- 4 rack adapter, 1-- 4 service manual, 1-- 4 standard, 1-- 2 Additional input modules, 1-- 4 Address, Tektronix, vii AES stream, 3-- 7 Airflow, allowing adequate, 1-- 5 Alarm error availability, Eye / Jitter mode, 3-- 3 possible al
Index E H EC self test failed, 2-- 3 Error indicators, Alarm Status display, 3-- 39 Errors, 3-- 2 ETHERNET connector, 2-- 10 Event log, icons, 3-- 33 EXT VGA connector, 2-- 10 Eye measurements, 3-- 17 Eye Measurements readout, 2-- 6 Eye menu, 2-- 20 Eye mode, 3-- 17 Eye Pattern aberration measurement, 3-- 20 amplitude measurement, 3-- 20 rise time measurement, 3-- 21 word correlated behavior, 3-- 23 H Gain readout, 2-- 5 Hardware fault, 2-- 2 Hardware installation, 1-- 5 Help menu, 2-- 24 HORIZ POS knob
Index L LED fault codes, 2-- 2 Lightning display, 3-- 41 interchannel timing measurement, 3-- 43 luminance gain measurement, 3-- 43 PbPr gain measurement, 3-- 43 Lightning graticule marks, 3-- 41 Line Select menu, 2-- 25 Line Select mode, 3-- 31 M MAG readout, 2-- 6 Major mode buttons, 2-- 4 Making menu selections, 2-- 11 Measure menu, 2-- 26 Measure mode, 3-- 34 Measurement amplitude with Vector display, 3-- 40 Eye Pattern aberrations, 3-- 20–3-- 22 Eye Pattern amplitude, 3-- 20–3-- 22 Eye Pattern rise t
Index P S Part numbers Japanese WFM700 User Manual, 1-- 4 Korean WFM700 User Manual, 1-- 4 power cords, 1-- 3 WFM700 Release Notes, 1-- 2 WFM700 Service Manual, 1-- 4 WFM700 User Manual, 1-- 2, 1-- 4 PbPr Gain measurement with Lightning display, 3-- 43 plotted against Luminance, 3-- 41 Phone number, Tektronix, vii Picture mode, 3-- 35 PIX G/Y, B/Pb, R/Pr outputs, 2-- 10 Pixel errors, 3-- 31 Portable cabinet, 1-- 4 Power, AC requirements, 1-- 6 Power connector, 2-- 9 Power consumption, typical, 1-- 6 Powe
Index V W V Gain readout, 2-- 5 V-- chip (Content Advisory) readout, 2-- 6 Variable gain, 2-- 22 Variable gain range, 2-- 22 Vector display amplitude measurement, 3-- 40 flesh tone indicator, 3-- 40 graticules, 3-- 40 Lightning display, 3-- 41 phase measurement, 3-- 40 timing measurement, 3-- 41 vector timing measurement, 3-- 41 Vector menu, 2-- 32 Vector mode, 3-- 40 Ventilation holes, 1-- 5 VERT POS knob, 2-- 2 VGA PIX MON connector, 2-- 10 Video mode (Data display), 3-- 15 Waveform, jitter, 3-- 23 Wa
