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Reference

3-16

WFM 1125 Option 0A/0B/0C/0D User Manual

Lightning Display

The Lightning display plots the color difference signals, P

b

and P

r

, against the

luminance (Y) signal. In the top half of the Lightning display, P

b

is plotted

against Y, and on the bottom half, P

r

is plotted against inverted Y. The vertical

center is the 0 V or black-clamp point. This display is useful for evaluating
component signal amplitude and timing.

Press the BOWTIE/VECTOR button to select VECTOR. Press the LIGHTNING
bezel button to select Lightning display.

Lightning modes can operate with 75% or 100% color bar signals. Press the
INTEN/MENU button and select the COLOR BARS menu to select the 75% or
100% graticule to match your test signal.

For Option 0A, 240M/274M format mode of Option 0C, or Interlace mode of
Option 0D, you may select either the BTA or the SMPTE graticule by pressing
the INTEN/MENU button and then choosing 240M (BTA S-001A or SMPTE
240M) or 274M (SMPTE 274M) in the COLOR menu.

Figure 3–11 shows how the waveform monitor plots the Lightning display from
the three component signals.

P

r

(RĆY) signal

P

b

(BĆY)

CY

M

B

R

M

Y

L

CY

G

B

R

G

Clamp point

0V

Y signal

+ Luminance (Y)

- Luminance (Y)

Y

L

Black

White

White

Figure 3-11: Construction of the Lightning display

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Содержание Tektronix WFM 1125

Страница 1: ...User Manual WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C 0D 071 0260 05 ...

Страница 2: ...issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in Japan Sony Tektronix Corporation 5 9 31 Kitashinagawa Shinagawa ku Tokyo 141 0001 Japan Tektronix Inc P O Box 500 Beaverton OR 97077 TEKTRONIX and TEK are registered trademarks of Tektronix Inc ...

Страница 3: ...ations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or conne...

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Страница 5: ...n you may purchase up to five years of Calibration Services Service Assurance Advantages H Priced well below the cost of a single repair or calibration H Avoid delays for service by eliminating the need for separate purchase authorizations from your company H Eliminates unexpected service expenses For Information and Ordering For more information or to order Service Assurance contact your Tektroni...

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Страница 7: ... Readouts 2 10 Reference Reference 3 1 Bowtie Display 3 1 Configure Menu 3 3 Diamond Display 3 8 Digital Intensity 3 10 Graticules 3 10 Lightning Display 3 16 Parade Display 3 18 Persistence Display 3 19 Save and Display 3 20 Setting Sweep 3 21 Status Display 3 22 Vector Display 3 24 Appendices Appendix A Specifications A 1 Electrical Specifications A 1 Environmental Characteristics A 12 Physical ...

Страница 8: ...Table of Contents ii WFM 1125 Option 0A 0B 0C 0D User Manual Inspection and Cleaning C 1 Repackaging for Shipment C 3 Glossary Index ...

Страница 9: ...in CH 3 3 2 Figure 3 4 Configure menu display of Option 0C 3 3 Figure 3 5 Construction of the Diamond display 3 8 Figure 3 6 Out of gamut signals on a Diamond display 3 9 Figure 3 7 Waveform display mode mV graticule 3 11 Figure 3 8 Waveform display mode graticule 3 13 Figure 3 9 Waveform display mode Full mV graticule 3 14 Figure 3 10 Waveform display mode Full graticule 3 15 Figure 3 11 Construc...

Страница 10: ...6 External reference input A 6 Table A 7 Format display A 6 Table A 8 Field rate display A 7 Table A 9 RBG transcoder A 8 Table A 10 Component vector mode A 8 Table A 11 Lightning and diamond mode A 8 Table A 12 Bowtie mode A 9 Table A 13 Status display mode A 9 Table A 14 Save and display mode A 9 Table A 15 Warning display A 9 Table A 16 Calculation dynamic range A 10 Table A 17 Setup memory A 1...

Страница 11: ...ected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Do Not Operate Without Covers Do not operate this pr...

Страница 12: ...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 WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product P...

Страница 13: ...e About This Manual This manual is composed of the following sections H Getting Started provides a product description and installation instructions Standard and optional accessories are also listed H Operating Basics briefly describes the front panel controls rear panel connections and brief menu operations H Reference provides an alphabetized reference for all display modes and configurable feat...

Страница 14: ...r contact us by e mail tm_app_supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Service Support Contact your local Tektronix distributor or sales office Or visit our web site for a listing of worldwide service locations http www tek com For other information In North America 1 800 TEK WIDE 1 800 835 9433 An operator will direct your ...

Страница 15: ...Getting Started ...

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Страница 17: ...ed on an internal VGA display An external VGA display output is also provided The digital architecture of the waveform monitor allows you to save the displayed waveform to an internal memory In order to properly display intermittent events that may be missed in a single line select mode the waveform monitor has a persistence display feature combining information from many TV lines much like an ana...

Страница 18: ...t for 720 60p 720 59 94p 1080 24p and 1080 23 98p H Y Pb Pr picture monitor analog output from selected serial digital signal input Options and Accessories The waveform monitor is shipped with several standard accessories These standard accessories and any optional accessories are listed here The waveform monitor comes standard with the accessories listed in Table 1 1 Table 1 1 Standard accessorie...

Страница 19: ...s of the cabinet help dissipate heat 1700F02 Carrying Case This portable cabinet is similar to the 1700F00 but it has rubber feet a carrying handle a flipstand and a front cover 1700F05 SideĆbyĆSide Rack Adapter The 1700F05 enclosure allows you to mount two half rack width instruments in a standard 19 inch rack 1700F06 Blank Panel When you use only one side of a 1700F05 enclosure insert a 1700F06 ...

Страница 20: ...s you have ordered one All qualification testing for the waveform monitor was performed in a 1700F00 cabinet To guarantee compliance with specifications you should operate the waveform monitor in one of the cabinets described here Cabinet Options The cabinets offered for the waveform monitor provide EMI shielding protect against electrical shock and protect against the accumulation of dust Figure ...

Страница 21: ...700F00 cabinet is the basic element for all of the cabinets The 1700F02 portable carrying case is an enhanced version of the 1700F00 cabinet as is the 1700F05 side by side rack mount assembly All cabinets are available from your Tektronix representative The portable cabinet 1700F02 is shown in Figure 1 2 The 1700F02 has a handle four feet and a flip up stand The mounting hole sizes and spacing are...

Страница 22: ...alling the rear panel mounting screws Without the mounting screws there is nothing to keep the waveform monitor in its cabinet Cabinet securing screws Figure 1 3 Rear view of the waveform monitor in a 1700F02 cabinet Rack Adapter Installation The optional 1700F05 side by side rack adapter shown in Figure 1 4 consists of two attached cabinets Use it to mount the waveform monitor and another half ra...

Страница 23: ...djust the rack adapter so that the waveform monitor is aligned with other equipment in the rack See Figure 1 4 Front panel alignment holes Mounting holes Mounting holes 43 9 cm 17 3 in 48 2 cm 19 in 13 2 cm 5 3 in Figure 1 4 The 1700F05 rack cabinet holds two instruments ...

Страница 24: ...pter insert a blank panel 1700F06 or an accessory drawer 1700F07 in the unused section to improve airflow and appearance Figure 1 5 shows the blank panel and drawer 1700F07 utility drawer 1700F06 blank panel 1700F05 sideĆbyĆside rack adapter Figure 1 5 1700F05 cabinet showing utility drawer and blank panel ...

Страница 25: ...ovide the required clearance when set on a flat surface 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 The waveform monitor operates from an AC lin...

Страница 26: ...Getting Started 1 10 WFM 1125 Option 0A 0B 0C 0D User Manual ...

Страница 27: ...Operating Basics ...

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Страница 29: ... features and rear panel connectors For more detailed information on functions refer to section 3 Reference Front Panel Overview Figure 2 1 shows the front panel of the waveform monitor A brief discussion of each feature follows the illustration Figure 2 1 WFMĂ1125 Digital Television Waveform Monitor front panel ...

Страница 30: ...s the intensity of the selected display Press the bezel button corresponding to the WAVEFORM GRATICLE READOUT or CURSOR menus and turn the SELECT knob to adjust the intensity Turn the knob clockwise to increase the intensity or turn it counterclockwise to reduce the intensity MENU Displays all menu items of the configure menu on the display You can select the menu items using the SELECT knob and b...

Страница 31: ... button the video signal coming from that channel is displayed in the volts vs time graticule on the screen OVERLAY PARADE button Displays three channels of the video signal at the same time or displays up to three channels of the video signal in succession BOWTIE VECTOR button Displays a bowtie test signal or displays the component signals in Vector displays You can toggle between the Bowtie and ...

Страница 32: ... the CRT to allow you to select 1 LINE 2 LINE 1 FIELD or 2 FIELD1 When PARADE is selected in the DISPLAY pressing this button displays the bezel menu on the CRT to allow you to select 3 LINE or 3 FIELD This mode is disabled if OVERLAY BOWTIE VECTOR or STATUS is selected in the DISPLAY MAG button Provides horizontal magnification of waveform signals Use the H POS knob to move left or right through ...

Страница 33: ...indicator Indicates data integrity errors If you set the CRC LED menu to ON the CRC LED indicator will light for 0 5 seconds when an error is detected GAMUT indicator Indicates color signal level errors If you set the GAMUT menu to ON the GAMUT LED indicator will light for 10 milliseconds when any R G or B component goes over 105 or drops below 5 ...

Страница 34: ...r current protection A protective ground connection through the grounding conductor in the power cord is essential for safe operation WARNING Dangerous potentials are present on the Power circuit board Do not connect power to the waveform monitor if it is not enclosed in a prescribed cabinet The waveform monitor operates from an AC line frequency of 50 or 60 Hz over the range of 90 to 240 VAC with...

Страница 35: ... and Segment Frame modes of Option 0D CH A and CH B connectors Provides for connection of serial digital signals which comply with SMPTE 292M MONITOR connector Provides a serial digital monitor output signal from the currently selected channel Rise fall times and jitter are not specified for this output CRCE OUT connector Provides TTL output when CRC errors are detected Connecting this signal to a...

Страница 36: ...connector Provides a VGA signal output identical to the signal displayed on the screen Connect this output to a VGA monitor or projector to display screen information or connect the output to a video printer to make a screen hardcopy RSĆ232C connector This 9Ćpin subminiature DĆtype connector provides a serial interface for data output and calibration ...

Страница 37: ...with it appears at the right side of the display To select a bezel menu item press the bezel button associated with the displayed menu item This menu consists of general configuration menu items and operating modes which are changed infrequently If you press and hold the front panel INTEN MENU button the menu items are listed on the display If you turn the SELECT knob when the menu items are on di...

Страница 38: ...ature follows the illustration 5 4 3 1 2 6 Figure 2 4 Six readout areas on the screen 1 Display format Line selection and Save and Display This sections indicates the Display format currently used line number if you are using the line selection function stored waveform if you are using the Save and Display function and the channel of the currently displayed waveform 2 Cursor readouts This section ...

Страница 39: ...menu to RATE this section displays the Err Sec value the error count value divided by the elapsed time since reset 5 No Signal and Missing Reference This section displays two items as follows H No Signal This message will appear when no incoming signal is present no waveform can be displayed and no clock can be generated H Missing Reference This message will appear when the field rate is no suppor...

Страница 40: ...Functional Overview 2 12 WFM 1125 Option 0A 0B 0C 0D User Manual ...

Страница 41: ...Reference ...

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Страница 43: ...own in Figure 3 1 The left waveform always compares CH 1 to CH 2 The right waveform always compares CH 1 to CH 3 Also by the common reference of CH1 the CH2 to CH3 timing is implicitly given Figure 3 1 Typical Bowtie display on the WFMĂ1125 The timing measurement is based on alignment of the center marker and the null point at the center of the waveform The generator provides a center marker which...

Страница 44: ...ides a method to determine whether the relative channel gain is correct If the gains are not equal the center null point will not be a complete null Figure 3 3 shows a Bowtie display with an incom plete null in the right waveform If the gain error is in CH 1 neither waveform has a complete null If CH 2 gain is off the left waveform will not null completely but the right one will If the gain is off...

Страница 45: ...m column to column refer to Using the Menus on page 2 9 Figure 3 4 shows the Configure menu display and Table 3 1 lists all Configure menu functions The displayed menu items little vary with the type of options Figure 3 4 Configure menu display of Option 0C Turning the SELECT knob causes a selection box to scroll through the menu list Press the SELECT button to select one of the menu items the men...

Страница 46: ... for the external reference input signal HDTV HDTV sets the format depending on the option Option 0A 1035 60i 1035 59 94i 1080 60i or 1080 59 94i Option 0B 720 60p or 720 59 94p Option 0C 1035 60i 1035 59 94i 1080 60i 1080 59 94i 720 60p or 720 59 94p NTSC NTSC sets the format to 525 59 94i For Option 0D the following two items are appeared instead of HDTV and NTSC 3 LEVEL 3 LEVEL set the format t...

Страница 47: ...in Field 2 The default setting is 1035 1080 If you choose 1080 the following lines are masked Line 1124 in Field 2 to Line 20 in Field 1 Line 561 in Field 1 to Line 583 in Field 2 WAVEFORM AS YPbPr In Waveform or Parade modes these settings determine if channels 1 2 and 3 are displayed in their native Y Pb P format YPbP or transcoded to RGB and 3 are displayed in their native Y Pb Pr format YPbPr ...

Страница 48: ... or Interlace and Segment Frame modes of Option 0D CRC DISPLAY Selects whether the CRC error count is displayed on the screen or not COUNT When COUNT is selected the error count the time elapsed since this function was enabled and the time when the latest error was detected are displayed at the lower left part of the screen When the count goes over 99999999 the value readout is changed to and the ...

Страница 49: ...preset number FACTORY EXECUTE Resets all the instrument settings to the factory defaults Selecting EXECUTE displays the bezel menu OK or CANCEL to confirm operation Press the OK bezel button to execute the operation Press CANCEL to cancel the operation and return to the state prior to selecting this menu item FORMAT Selects the interface format that the waveform monitor expects at the CH A and CHB...

Страница 50: ...TOR button to select VECTOR Press the DIAMOND bezel button to select Diamond display Red Blue 0 V 700 mV 700 mV 700 mV 0 V 700 mV B R G G X Y plot Diamond plot Green Legal G and R space Green Legal G and B space Figure 3 5 Construction of the Diamond display Ultimately all color video signals are coded as RGB for display on a picture monitor For a color monitor to predictably display all three com...

Страница 51: ...ctor indicates its duration A momentary out of gamut condition appears as a faint trace outside the diamonds Long duration violations show as a bright trace outside the diamonds Figure 3 6 gives some sample out of gamut signals on the Diamond display On the Diamond display monochrome signals appear as vertical lines Signals of constant hue and variable saturation or intensity appear as straight li...

Страница 52: ...on the front panel 2 Press the WAVEFORM bezel button 3 Turn the SELECT knob clockwise until it stops to display waveforms in two valued level Graticules The waveform monitor has four waveform display mode graticules millivolt percent full millivolt and full percent To select a graticule for waveform display mode follow the steps below For information on how to move the highlight from column to col...

Страница 53: ...to 800 mV in 100 mV increments Each major division is divided into 5 minor divisions which equal 20 mV each H Horizontal Scale The horizontal line represents time and has 12 major divisions Each major divisions is divided into 5 minor divisions Refer to Table 3 2 and Table 3 3 for how the sweep setting affects the horizontal scale Figure 3 7 Waveform display mode mV graticule Millivolts mV Graticu...

Страница 54: ...sweep Table 3 3 Horizontal scale for Option 0D Sweep setting MAG off MAG on Availability 1 line 3 0 ms 0 1 ms 1035 60i 1035 59 94i 1080 60i 1080 59 94i 1080 50i 1080 30sF 1080 29 97sF 1080 25sF 1080 24sF 1080 23 98sF 1080 24p 1080 23 98p 2 0 ms 0 1 ms 720 60p 720 59 94p 2 lines 6 0 ms 0 4 ms 1 0 ms 1 2 ms 1035 60i 1035 59 94i 1080 60i 1080 59 94i 1080 30sF 1080 29 97sF 1080 50i 1080 25sF 1080 24sF...

Страница 55: ...ends from 40 to 120 in 10 increments Each major division is divided into 2 minor divisions which equal 5 each H Horizontal Scale The horizontal line represents time and has 12 major divisions Each major divisions is divided into 5 minor divisions Refer to Table 3 2 for how the sweep setting affects the horizontal scale Figure 3 8 Waveform display mode graticule Percent Graticule ...

Страница 56: ... mV to 700 mV in 100 mV increments Each major division is divided into 5 minor divisions which equal 20 mV each H Horizontal Scale The horizontal line represents time and has 12 major divisions Each major divisions is divided into 5 minor divisions Refer to Table 3 2 for how the sweep setting affects the horizontal scale Figure 3 9 Waveform display mode Full mV graticule Full Millivolts mV Graticu...

Страница 57: ...ds from 0 to 100 in 10 increments Each major division is divided into 5 minor divisions which equal 2 each H Horizontal Scale The horizontal line represents time and has 12 major divisions Each major divisions is divided into 5 minor divisions Refer to Table 3 2 for how the sweep setting affects the horizontal scale Figure 3 10 Waveform display mode Full graticule Full Percent Graticule ...

Страница 58: ...htning display Lightning modes can operate with 75 or 100 color bar signals Press the INTEN MENU button and select the COLOR BARS menu to select the 75 or 100 graticule to match your test signal For Option 0A 240M 274M format mode of Option 0C or Interlace mode of Option 0D you may select either the BTA or the SMPTE graticule by pressing the INTEN MENU button and then choosing 240M BTA S 001A or S...

Страница 59: ...ent of either half of the display luminance gain vertical displacement between the black and white levels and timing delay between either color difference signal and luminance bending of the green ma genta transitions Figure 3 12 shows the graticule and the measurement targets and timing delay scales The signal is driven along the vertical axis above and below the center box by the luminance signa...

Страница 60: ...f the color bar signal dots are within the horizontal dimensions of the appropriate graticule targets the Pb and Pr gains are within 2 of the correct amplitude Since the vertical and horizontal dimensions of the graticule target boxes indicate 2 luminance and color difference gain errors respectively you can evaluate each color bar for encoding accuracy with these limits The Lightning display show...

Страница 61: ...n the persistence period H NONE Persistence is disabled The waveform displayed on the screen is repeatedly updated for each scan H INFINITE Sets the persistence to infinite Waveforms over written on the screen will remain until you press the bottom bezel button When INFINITE is selected INF RESET is assigned to the bottom bezel button Press this button to reset the screen display and restart overw...

Страница 62: ...r with the channel select feature Press the SAVE DISP button on the front panel while waveform is being acquired to save the signal into the memory and redisplay it on the screen The waveform captured in the memory will be displayed over the waveform being continuously acquired Use the V POS and H POS knobs on the front panel to move the incoming waveform being displayed The LED lights while the w...

Страница 63: ... sweep mode is disabled The following options are available when channel 1 2 or 3 is selected H 1 LINE Waveform of 1 line is displayed You can choose a line from field or frame by using the line selection feature For more information about the relation between the sweep setting and the horizontal scale for each option refer to Table 3 2 and Table 3 3 on page 3 12 H 2 LINE Waveforms of 2 line is di...

Страница 64: ...e the H POS knob to move the waveform to right or to left This mode is disabled when Parade display mode or field sweep rate is currently selected Status Display In Status display mode the data words of the incoming serial digital signal are displayed This display will help you analyze the status of the Y Pb Pr signal Press the STATUS button on the front panel to select and bring up the status dis...

Страница 65: ...ed time since reset When the error count goes over 99999999 the display changes to and the time is no longer updated If you have set the CRC DISP menu for RATE this section indicates the Err Sec value the error count value divided by the elapsed time since reset Displays the field rate of the currently selected reference signal For Option 0D the scanning format is also displayed There are four bez...

Страница 66: ...ally be available and the line number previously selected will be used All lines including vertical blanking can be selected Vector Display The waveform monitor provides a conventional vector display that plots the two color difference signals Pb and Pr against each other The Vector display is useful for checking the chrominance phase and amplitude Press the BOWTIE VECTOR button to select VECTOR P...

Страница 67: ...site vectorscope Pb and Pr are displayed with equal gains Signals do not have the same magnitude and angle as represented on a PAL NTSC composite encoded signal vectorscope For example signals with constant composite chroma magnitude have an elliptical rather than circular locus Pr signal Pb signal R MG B CY G YL Figure 3 17 Vector display relationship of the Pr and Pb signals ...

Страница 68: ...after composite encoding When taking measurements make certain your source signal amplitude matches the Vector graticule For example if the source is a 75 Color Bar signal then choose the 75 graticule in the COLOR BARS of the VECTOR menu The displayed error is measured in terms of percent Pb or Pr since the signal may never be encoded into composite PAL NTSC where the errors are traditionally expr...

Страница 69: ...Appendices ...

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Страница 71: ...n ambient temperature range of 20 C to 30 C after a warm up time of 20 minutes Electrical Specifications Table A 1 Vertical deflection system Characteristic Performance requirements Reference information Frequency Response Luminance Channel Y 50 kHz to 30 MHz 0 5 of the frequency response at 50 kHz 37 125 MHz 12 dB Chrominance Channel Pb Pr 50 kHz to 15 MHz 0 7 of the frequency response at 50 kHz ...

Страница 72: ...applied video sync Overlay 2 5 ms div 0 1 ms div MAG ON Refreshed 1 13 line rate of applied video sync 1 Field Equal to the field rate of applied video sync 2 Field Equal to the frame rate of applied video sync 3 Field Equal to the field rate of applied video sync Option 0B or 296M format mode of Option 0C 1 Line 2 0 ms div 0 1 ms div MAG ON Refreshed 1 5 17 line rate of applied video sync 2 Lines...

Страница 73: ...eo sync 1 Field Equal to the field rate of applied video sync 2 Field Equal to the field rate of applied video sync 3 Field Equal to the field rate of applied video sync Option 0D Segment Frame mode 1 Line 3 0 ms div 0 1 ms div MAG ON Refreshed 1 4 line rate of applied video sync 2 Lines 6 0 ms div 0 4 ms div MAG ON 1080 30sF 1080 29 97sF 6 0 ms div 1 0 ms div MAG ON 1080 25sF 6 0 ms div 1 2 ms di...

Страница 74: ...4p 1080 23 98p Refreshed 1 17 line rate of applied video sync 720 60p 720 59 94p Refreshed 1 13 line rate of applied video sync 1080 24p 1080 23 98p Overlay 2 0 ms div 0 1 ms div MAG ON 720 60p 720 59 94p 3 0 ms div 0 1 ms div MAG ON 1080 24p 1080 23 98p Refreshed 1 17 line rate of applied video sync 720 60p 720 59 94p Refreshed 1 13 line rate of applied video sync 1080 24p 1080 23 98p 1 Field Equ...

Страница 75: ...rformance requirements Reference information Format SMPTE 240M SMPTE 274M or SMPTE 296M Option 0D SMPTE 240M or SMPTE 274M Option 0A or 240M 274M format mode of Option 0C SMPTE 296M Option 0B or 296M format mode of Option 0C DAC Resolution Luminance Channel Y 9 bit Chrominance Channel Pb Pr 10 bit Impedance 75 W Unbalanced Sync triĆlevel sync on Y channel Table A 5 Stripped AES EBU digital audio o...

Страница 76: ...on 0D Table A 6 External reference input Characteristic Performance requirements Reference information Sync Format RSĆ170A PAL 2ĆLEVEL mode of Option 0D SMPTE 240M SMPTE 274M SMPTE 296M 3ĆLEVEL mode of Option 0D SMPTE 240M SMPTE 274M Option 0A or 240M 274M format mode of Option 0C SMPTE 296M Option 0B or 296M format mode of Option 0C DC Input Impedance u15 kW Unterminated Return Loss u30 dB to 30 ...

Страница 77: ...eld Rate 60i 59 97 Hz to 60 03 Hz 59 94i 59 91 Hz to 59 97 Hz 50i 48 024 Hz to 59 91 Hz Unknown field late Display Missing Reference Display Contents Segment Frame mode of Option 0D Internal Detected Field Rate 30sF 95 97 Hz to 60 03 Hz 29 97sF 59 91 Hz to 59 97 Hz 25sF 48 024 Hz to 59 92 Hz 24sF 47 976 Hz to 48 024 Hz 23 98sF 47 928 Hz to 47 976 Hz Unknown field late Display Missing Reference Dis...

Страница 78: ...acteristic Performance requirements Reference information Frequency Response u 14 MHz Vertical Gain Error t 0 25 Horizontal Gain Error t 0 25 Magnification X5 and X10 Display Pb Horizontal Pr Vertical Table A 11 Lightning and diamond mode Characteristic Performance requirements Reference information Vertical Gain Error t 0 25 Horizontal Gain Error t 0 25 Electronic Graticule Display Lightning Y is...

Страница 79: ... Performance requirements Reference information Delay Time from time of button pushed t 3 frames Length of Reference Memories 1 frame Table A 15 Warning display Characteristic Performance requirements Reference information CRC Error LED LED lights for 0 5 seconds at error detected CRC Error Count CRC error count elapsed time in this mode and the time of latest error detected are displayed Resoluti...

Страница 80: ...Table A 17 Setup memory Characteristic Performance requirements Reference information Number of memory setups 4 setups Option 0A 0B 0C 100 setups Option 0D Save and Recall This function is performed from front panel menu and remote connector ground closure for the memory location number 1 to 4 For the other memory location number it is controlled through the RSĆ232C connector Table A 18 CRT displa...

Страница 81: ...cord set 2 Per EN 55103Ć1 Annex B Table A 20 Installation requirements Characteristic Performance requirements Reference information Heat Dissipation Maximum Power 90 W max 1 0 A rms at 50 Hz Maximum Dissipation Voltage 90 V with 5 clipping Surge Current 40 A peak for equal to or less than 5 line cycles after the instrument has been turned off for at least 30 seconds Clearance Top and Bottom 2 5 c...

Страница 82: ...ms NonĆoperating 10 minutes at 5 500 Hz with 2 46 g rms Mechanical shock NonĆoperating 294 m s2 30 g 1 2 sine 11 ms duration 3 shocks per surface 18 total Equipment Type Test and Measuring Equipment Class Class I Grounded product as defined in IEC 1010Ć1 Annex H Installation Category Category II as defined in IEC 1010Ć1 Annex J Note Rated for indoor use only Category Examples of Products in this C...

Страница 83: ...urrent Emissions EN 61000Ć3Ć3 Line Voltage Alteration and Flicker EN 55103Ć1 Annex A Magnetic Field Emissions EN 55103Ć1 Annex B Power Line Inrush Current EN 55103Ć2 1996 Immunity IEC 61000Ć4Ć2 Electrostatic Discharge Immunity IEC 61000Ć4Ć3 RF Electromagnetic Field Amplitude Immunity IEC 61000Ć4Ć4 Electrical Fast Transient Burst Immunity IEC 61000Ć4Ć5 AC Mains Surge Immunity IEC 61000Ć4Ć6 Conducte...

Страница 84: ...wall sockets Equipment at this level includes appliances portable tools and similar products Equipment is usually cordĆconnected CAT I Secondary signal level or battery operated circuits of electronic equipment Pollution Degree A measure of the contaminates that could occur in the environment around and within a product Typically the internal environment inside a product is considered to be the sa...

Страница 85: ...nterface Figure B 1 shows the pin assignments and the communication parameters for the RS 232C interface Pin Number 1 2 3 4 5 6 7 8 9 DCD Received line signal detector RXD Received data TXD Transmitted data DTR DTE ready Signal ground DCR DCE ready RTS Request to send CTS Clear to send Not connected Data Connection Baud 9600 pbs Power cycle always Data bits 8 unselectable Stop bits 1 unselectable ...

Страница 86: ...ory location specified RECALL This command recalls the instrument settings from the memory location specified Remote Connector The rear panel REMOTE connector is a 15 pin D type female connector that allows low level remote control All the active control lines go to low level by grounding or TTL low level input Low means the function that can be effective when that pin is grounded or becomes TTL l...

Страница 87: ...N when TTL signal level goes from Low to High 2 RGB RGB transcoder becomes available when TTL level goes from High to Low RBG transcoder becomes disabled when TTL level goes from Low to High 3 ONE TWO Option 0A 240M 274M format mode of Option 0C or Interlace mode of Option 0D 2 Line or 2 Field is selected when TTL level goes from High to Low 1 Line or 1 Field is selected when TTL level goes from L...

Страница 88: ... See pin 5 information 8 Interlace Segment Frame Progressive 1 See pin 4 information 9 Ground 10 Save Disp Save and Display mode is set to ON when the TTL level goes from High to Low Save and Display mode is set to OFF when the TTL level goes from Low to High 11 Edge The display mode is selected according to the combined status of of pins 12 13 and 14 when the TTL level goes from High to Low Mode ...

Страница 89: ... operation The optional front panel cover protects the front panel and display from dust and damage It is recommended to install the optional front panel cover when storing or transporting the waveform monitor Inspection and Cleaning Inspect and clean the waveform monitor as often as operating conditions require The collection of dirt on components inside can cause them to overheat and breakdown D...

Страница 90: ... Dirt in connectors Repair or replace defective modules Clear or wash out dirt Carrying handle bail and cabinet feet Correct operation Repair or replace defective module Accessories Missing items or parts of items bent pins broken or frayed cables and damaged connecĆ tors Repair or replace damaged or missing items frayed cables and defective modules To clean the instrument exterior do the followin...

Страница 91: ... instructions a Obtain a carton of corrugated cardboard having inside dimensions at least six inches greater than the dimensions of the instrument Use a shipping carton that has a test strength of at least 275 pounds b Surround the instrument with a protective bag anti static preferred For instruments that are not in a cabinet wrap a cardboard piece around the bagged instrument to protect internal...

Страница 92: ...Appendix C Cleaning Service C 4 WFM 1125 Option 0A 0B 0C 0D User Manual ...

Страница 93: ...Glossary ...

Страница 94: ......

Страница 95: ...r information in the receiver Burst PAL A small reference packet of the subcarrier sine wave sent during the horizontal blanking interval on every line of video Since the carrier is suppressed this phase and frequency reference is required for synchronous demodulation of the color difference signals in the receiver Color Black See Black Burst Color Difference Signals Signals used by color televisi...

Страница 96: ...ds Frame Contains all the information required for a complete picture For interlaced scan systems there are two fields in a frame Gamma A measure that compares the contrast in the original and reproduced television picture Since picture monitors have a nonlinear relationship between the input voltage and brightness the signal must be correspondingly enhanced to nullify the nonlinear distortion Gam...

Страница 97: ...cel out phase errors PB A color difference signal used in component video systems It is derived by subtracting the B blue signal from Y PR A color difference signal used in component video systems It is derived by subtracting the R red signal from Y RF Radio Frequency In television applications RF generally refers to the television signal after the picture carrier modulation process RGB Red Green ...

Страница 98: ... 75 W system so a 75 W terminator must be put at the end of the signal path U The B Y signal after a weighting factor of 0 493 has been applied The weighting is necessary to reduce peak modulation in the composite signal V The R Y signal after a weighting factor of 0 877 has been applied The weighting is necessary to reduce peak modulation in the composite signal Vectorscope A specialized oscillos...

Страница 99: ...Index ...

Страница 100: ......

Страница 101: ...mposite video Glossary 2 Configure menu 2 9 3 3 Connector REMOTE B 2 RS 232C B 1 Contacting Tektronix viii CRC Glossary 2 CRC indicator 2 5 CRCE OUT connector 2 7 CRT blinking 1 9 CURSOR button 2 4 D Diamond display 3 8 checking RGB gamut 3 9 construction of the Diamond graticule 3 8 Digital intensity 3 10 Display Bowtie 3 1 Diamond 3 8 Lightning 3 16 Parade 3 18 Persistence 3 19 Status 3 22 Vecto...

Страница 102: ...asurement amplitude with Vector display 3 26 interchannel timing with Lightning display 3 18 luminance gain with Lightning display 3 17 PbPr gain with Lightning display 3 18 phase with Vector display 3 26 vector timing with Vector display 3 26 Mechanical installation 1 4 Memory Waveform 3 20 Menus using the menus 2 9 MONITOR connector 2 7 MSB Glossary 3 N NTSC Glossary 3 burst Glossary 1 O Operati...

Страница 103: ...andard accessories 1 2 Standards NTSC PAL Glossary 3 STANDBY button 2 2 Status display 3 22 Sweep 3 21 setting the sweep 3 21 SWEEP button 2 4 T Tektronix contacting viii Termination Glossary 4 Timing measurement with Bowtie 3 1 U U Glossary 4 Using the menus 2 9 V V Glossary 4 V POS knob 2 2 Vector display 3 24 amplitude measurement 3 26 graticule 3 26 how Pb and Pr create display 3 25 phase meas...

Страница 104: ...Index Index 4 WFM 1125 Option 0A 0B 0C 0D User Manual ...

Страница 105: ......

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