User Manual SDA 601 Serial Digital Analyzer 070-8913-03
Copyright E Tektronix, Inc., 1994. All rights reserved. Printed in U.S.A. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges reserved. The following are registered trademarks: TEKTRONIX and TEK. For product related information, phone: 800-TEKWIDE (800-835-9433), extension TV. For further information, contact: Tektronix, Inc., Corporate Offices, P.O.
Warranty Tektronix warrants that the SDA 601 Serial Digital Analyzer will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.
EC Declaration of Conformity We Tektronix Holland N.V. Marktweg 73A 8444 AB Heerenveen The Netherlands declare under sole responsibility that the SDA 601 Handheld Serial Digital Analyzer meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility.
Table of Contents Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supplying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting the SDA 601 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SERIAL INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AUX Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . .
Contents ii Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SDA 601 Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Menu Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Watch Menu (groups enabled) . . . . . . . . . . . . . . . . . . . . . . . Watch Menu (items enabled) . . . . . . . . . . . . . . . . . . . . . . . . Alarm Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents List of Figures Figure 1: Opening the Battery Compartment . . . . . . . . . . . . 2 Figure 2: Connecting the SDA 601 . . . . . . . . . . . . . . . . . . . . . 4 Figure 3: A Printed Analysis Report . . . . . . . . . . . . . . . . . . . 6 Figure 4: The Default Watching OSD . . . . . . . . . . . . . . . . . . 8 Figure 5: The Set Time display . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 6: The Analyze OSD . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents iv SDA 601 Serial Digital Analyzer User Manual
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 Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and markings on the product.
General Safety Summary Safety Terms and Symbols 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.
Getting Started Please read the following statements before using your new SDA 601 Serial Digital Analyzer. See the rest of this section for tips on supplying power, making preliminary settings, and connecting the instrument. WARNING. Install or replace batteries only with the instrument switched OFF and the AC adapter disconnected. Electrical shock or equipment damage can result. CAUTION. Do not attempt to operate the SDA 601 with an improper AC adapter. Damage to the instrument can result.
Getting Started Supplying Power The SDA 601 is DC powered. You may power it with the standard AC adapter, the optional 9.6 V NiCad battery pack, eight standard AA batteries, or a “BP” type battery pack with the correct voltage and polarity. The external DC power connector is on the left side of the instrument.
Getting Started is switched off. It can take up to 16 hours to fully charge the battery pack. Note that charging will occur only if the adapter supplies at least 12 V; make sure that the adapter you use is appropriate for the local AC supply. H AA batteries are not included with the instrument; buy them locally. Rechargeable AA batteries may be used, but they are NOT recharged automatically. To recharge AA batteries, remove them from the instrument and use an appropriate charger.
Getting Started Connecting the SDA 601 Figure 2: Connecting the SDA 601 Connect the instrument as shown in Figure 2. The OPTION connector is reserved for later versions of the instrument.
Getting Started H With Pulse Cross enabled (see page 24), lets you “see” the contents of the vertical and horizontal interval portions of the serial video signal. H Can include Cursor cross hairs for convenient positioning of the Cursors (see page 22). H When Highlighting (see page 23) is turned on, can help you locate and identify errors in the picture, or the digital encoding of the signal. The AUX output signal may be thought of as “pseudo video.
Getting Started Figure 3: A Printed Analysis Report The RS-232 interface is also designed to support in-field upgrade of the operating software. Information regarding any such upgrades will be available from your Tektronix representative or field office.
Getting Started Keypad and Display Conventions Please see the Instruction card (p/n 070-8912-00) supplied with your SDA 601 for a “tour” of the keypad and an explanation of the display symbols. For your convenience, the following panels are taken from the card.
Getting Started The On-screen Display (OSD) The OSD is a 12 line, 24 column display containing results from an SDA 601 Analyze or Watch session. It can be superimposed on the AUX output and viewed on an attached video monitor. Toggle the OSD On/Off with the Insert On/Off key. The default OSD will resemble Figure 4 when the instrument is in Watch mode. You can control several OSD characteristics (size, color, screen position) through the Utility/OSD Setups submenu; see page 32.
Getting Started H Similar reversed “S” and “SL” icons (not shown) will appear when SDA 601 keypad is shifted and shift locked. H The down arrow in the lower right indicates that the B key may be used to reveal another page. An up arrow will appear if the Y key may be used. The Analyze OSD is similar; see Figure 6, on page 15. Preliminary Settings Once the SDA 601 is up and running, you should choose some settings depending on how you’ll be using the instrument.
Getting Started Enter the time in 24 hour format; that is, if the present time is 4:15 pm, enter 16:15. 3. When the correct date and time is shown on the display, press Enter. If all values are valid, the instrument will respond with the message “Time Accepted.” If you have made an error and entered an invalid date or time, the instrument will respond with an appropriate error message. If that happens, correct the error and press enter. 4.
Getting Started 2. Disable/enable Auto Power Off by pressing either A or ". Press Enter to confirm the choice. Enabled Auto Power Down is indicated by a “rotating line” symbol on the second line of the instrument display, and in the lower-left corner of the OSD. 3. Use the Y and B keys to scroll to other “power manage” items, or press any rectangular key to exit the menu and resume normal operation.
Getting Started 12 SDA 601 Serial Digital Analyzer User Manual
Operating Basics NOTE. For more information on Serial Digital Video Systems request Tektronix publication 25W-7203-1 “A Guide to Digital Television System and Measurements” from your nearest Tektronix representativeor field office. To begin using the instrument as quickly as possible, see “Using Your SDA 601,” below. For additional information on selected topics, turn to the Reference section of this manual, beginning on page 27. Using Your SDA 601 Here’s what you can do with your SDA 601.
Operating Basics H Analyze one second of the incoming signal and read the results on the instrument display or an attached video monitor (page 14). You may also print the results on an attached ASCII, serial printer (page 15). H Watch the input signal, paying attention to selected signal characteristics, or groups of characteristics (page 16). Errors are reported to the instrument display panel and an attached video monitor. You may also log errors to an attached printer (page 20).
Operating Basics Video In/Out of range Line/field length (OK/incorrect) EDH flag set/not set Performing an Analysis — To analyze a signal, simply press Analyze. The SDA 601 will observe the incoming signal for one second, analyze the data, and write the results to a “condition review list” and the OSD. Reviewing the results on the OSD — There are three pages of results; use the B and Y keys, as indicated by the arrow icons on the lower right of the OSD, to see all three pages.
Operating Basics Audio and Stuck Bits explained — Audio content and stuck bits are reported on the LCD and Printer output in the same format as in the OSD, shown in Figure 6: The “Audio:” result line has room to display the status of all 16 audio channels that can be embedded in digital video. The status of channels (#1 through #16, from left to right) are reported as “–” for no audio detected, “A” for active audio, and “M” for mute (present, but silent).
Operating Basics Video format Line standard (625 or 525) Video present or missing Bits in active picture (8 or 10) EDH packet found/missing Audio present/missing Stuck bits (if any) Other ANC (if any) The twelve remaining conditions are organized into the four Watch groups: Data Value Group: Illegal (word) values Video In/Out of range Format Group: Line/field length (OK/incorrect) ANC Format (OK/incorrect) TRS (OK/incorrect) Zero length ANC (yes/no) CRC Change Group: APCRC changes (yes/no) FFCRC changes
Operating Basics or not alarms are enabled through the Alarm menu); and the “E” icon will appear when an error is detected. Figure 7: The SDA 601 “Watching” Display 4. Review the condition list on the SDA 601 LCD by pressing the B key until you reach the END OF LIST message. Use Y to scroll back up the list as desired. The Watch review list will “time out” if more than 3.5 seconds pass without a key press.
Operating Basics Figure 8: Watch Errors Reported on the OSD Interpreting error reports — The SDA 601 reports errors in many Watch conditions to the review list on an “error second” basis, as shown in Figure 8. In this illustration, the FFCRC and the APCRC changed at least once, giving one error second approximately 25 seconds after the Watch session began.
Operating Basics however, there may be fewer than one alarm per error condition. h Short Beep — One second duration; otherwise similar to the Long Beep. h Beep “Tick” — A very short beep, almost a tick; useful when there are many alarm conditions, when they occur in “bursts,” or for audible feedback when performing equipment adjustments for proper operation. H A Printer Port alarm, output on the RS-232 port.
Operating Basics FF CRC change AP EDH error FF EDH error Flag Set Conditions that will trigger an alarm only if they are configured to do so through the Item Watch menu are: Line Std Detect (if “Alarm if 525” or “Alarm if 625” is selected) AP Bits (8/10) (if “Alrm if 8 bits” or “Alrm if 10 bits” is selected) EDH packet miss (if “Alarm if Miss” is selected) AP CRC Not Ø (if “Alarm Not Ø” is selected) Configure the beeper and printer alarms through the Alarm Menu (see page 30). As you might expect: 1.
Operating Basics The signal level display may be toggled On/Off through the Display Select key/menu (see page 31). Cursor The SDA 601 “cursor” may be used to pinpoint a single word in the digital video frame and discover the actual value of the selected word and the three that follow. The location of the cursor may also be shown with “cross hairs” on a video monitor connected to the AUX output. The cursor is positioned (and a word is selected) with the arrow keys.
Operating Basics The second line contains the address or coordinates of the selected word. In the example, the selected word is number 1712 of line 4 in field 1. The cursor movement icon is present on the second line when you can use the arrow keys to position the cursor. Use the B (Cursor) key to toggle the arrow keys between cursor movement and their alternate display scrolling function. Normal cursor movement is one line for each press of the Y or B key, and one word per press of the A or " key.
Operating Basics 3. The first I/O menu item is Highlighting. Use the A or " key to select “Display,” then press Enter to confirm the choice. 4. While still in the I/O menu, press the B key once to scroll down to the “Dim Video” item. 5. Toggle Dim Video to On with a horizontal arrow key, then press Enter to confirm the choice. Dim Video reduces the video signal by 50%, ensuring good contrast between the video signal and highlighted pixels. 6. Exit the I/O menu by pressing any rectangular key. 7.
Operating Basics 4. Press Enter to select the new option. 5. Press any rectangular key to exit the I/O menu. Presets The configuration of the SDA 601 at any given time may be saved as a Preset for later recall. Three different configurations can be saved. Using presets, you can easily change between completely different combinations of (for instance) Watch conditions, alarm settings, LCD display options, and AUX output options. To save a Preset: 1.
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Reference SDA 601 Menus The instrument menus are explained here, and listed on the following pages. Watch Menu (groups enabled) . . . . . . . . . . . . . . . . . . . . Watch Menu (items enabled) . . . . . . . . . . . . . . . . . . . . . Alarm Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Display Select Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . Presets Menu . . . . . . . . . . . . . . .
Reference Figure 12: The OSD Setups/Horizontal Position Item Number Entry: In many cases, numbers may be entered directly from the keypad. In the “Horiz Position” item, for example, you can enter the desired location with the number keys 0 through 9—see the following illustration—without first pressing Shift. Figure 13: The SDA Number Keys Note that once the new horizontal coordinate has been entered through the keypad and is visible on the LCD, you must press Enter twice to confirm the change.
Reference Watch Menu (groups enabled) Enter the Watch menu by pressing Shift, then Watch. Configure the menu for Group or Item selection through the Utility menu; see page 33. See page 17 for a list of the items in each group.
Reference (11) EAV/SAV/TRS err Off < > Watch (12) ANC Format Erro Off < > Watch (13) Zero Length ANC Off < > Watch (14) AP CRC change Off < > Watch (15) FF CRC change Off < > Watch (16) AP CRC Not ∅ Off < > Watch < > Alarm Not ∅5 (17) AP EDH error Off < > Watch (18) FF EDH error Off < > Watch (19) Flag Set Off < > Watch (20) Clear All Items6 Press Enter Alarm Menu Enter the Alarm menu by pressing Shift, then Alarm On/Off.
Reference I/O Menu Enter the I/O menu by pressing Shift, then Insert On/Off. (1) Highlighting No Display < > Display (2) Dim Video Off < > On (3) Video Cursor No Display < > Display (4) Pulse Cross Normal < > HCross < > VCross < > Both (5) AUX Pixmon Y < > Pixmon R–Y < > Pixmon B–Y Display Select Menu Enter the Display Select menu by pressing Display Select.
Reference symbol); see the SDA 601 Service manual (Tektronix p/n 070-8914-0x) for instructions on their use. (1) OSD Setups... Press Enter OSD On/Off11 On < > Off (b) Horiz Position 0 < > MAX=31 [default = 5] (c) Vert Position MIN = 0 < > MAX = 31 [default = 11] (d) Set char Size Medium < > Big < > Small (e) Previous Menu Press Enter (f) Set char colors White on Black < > Black on White < > White w/outline < > Black w/outline Printer Setup..
Reference (c) (4) Previous Menu Press Enter Watch Menu Type Group Select < > Item Select (5) LCD Contrst Adj MIN = 020 < > MAX = 80 [default = 80] (6) Set Time Press Enter (7) Diagnostics... Press Enter (a) (b) (c) (d) Show SW/FW Vers Press Enter Power Manage .. Press Enter 1) Battery Type Rechargeable < > Alkaline 2) LCD Backlight Timed Turn Off < > On all the time 3) Auto Power Off Disabled < > Enabled 4) Previous Menu Press Enter Device Tests..
Reference 3) (e) (f) (g) (h) 15 Read TIC Memory <> 0 * 4) Factory Reset15 Press Enter 5) Previous Menu Press Enter Flash Diags.. ✝ Press Enter 1) Checksum Memory Press Enter 2) Read Byte 10000 Press Enter 3) Writ Byte 10000 MIN = 0 < > MAX = 255 4) Erase Sec 10000 Press Enter 5) Read SLM Cals Press Enter 6) Write Byte Loop MIN = 0 < > MAX = 255 7) Previous Menu Press Enter Calibration..
Reference (i) Previous Menu Press Enter The AUX Output The analog signal present at the SDA 601 AUX output is derived from the Serial Video input. It is a single channel, 5-bit decoded and unfiltered, suitable for identifying the input and displaying the cursor cross hairs, Highlighting, and OSD. The AUX choices in the I/O menu are: Pixmon Y; Pixmon R–Y; and Pixmon B–Y. As you might guess, this determines which of the three video components is shown on the video monitor.
Reference The connector pinout has been chosen to interface directly with an IBM PC/AT 9-pin serial port using a straight-through cable. A simple ribbon cable may be adequate. For logging errors and printing reports, a “null-modem” cable may be required, depending on the pinout of the printer connector. Consult your printer manual to determine compatibility. Because of space limitations on the connector end of the SDA 601, you may have to insert a 9-pin adapter between the cable and the connector.
Reference H EAV/SAV mis-format — derived by decoding the EAV/SAV protection bits for errors. H EAV/SAV incorrect placement — which may be the result of a receiver momentarily losing clock sync to the received signal, and thereby adding or dropping a data bit. This may also result from a bit error altering an EAV or SAV so that its presence is unrecognizable. H Illegal data — whereby the reserved values of 000-003 (00.0-00.3) or 3FC-3FF (FF.0-FF.3) are improperly present.
Reference Using the CRC Change Watch Group The three items in the CRC change Watch group—ØAPCRC, FFCRC Changed, and APCRC Changed—are designed to facilitate the testing of equipment or signals that don’t have EDH encoding. ØAPCRC — If you are testing equipment that won’t pass the vertical interval, but will pass the entire active picture area, then ØAPCRC is an excellent test method.
Reference coded signals are not available. This check requires a fixed (unchanging) video signal. The SDA 601 calculates the Full Field CRC (FFCRC) that is used for EDH error checking. Then, for this check, the SDA 601 compares the calculated CRC in each field to the CRC calculated for the same field in the previous frame. If the incoming video signal is fixed, then the calculated CRCs should be identical from frame to frame.
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Appendix A: Characteristics The information in this section is included for the convenience of the SDA 601 operator. For a full list of instrument specifications, as well as performance verification and adjustment procedures, please see the SDA 601 Service Manual (Tektronix p/n 070-8914-XX). NOTE. Shielded cables were used in the EMI certification of this instrument; therefore, it is recommended that shielded cables be used when operating.
Appendix A: Characteristics Specification Tables ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Appendix A: Characteristics ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Table 4: Signal Level Meter Characteristic Information Resol
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Appendix B: Replaceable Parts The following replaceable parts for the SDA 601 are available through your local Tektronix, Inc. field office or representative. It is important when ordering parts to include the following information in your order: Part number; instrument type and number; instrument serial number; and modification number, if applicable. Description Tektronix Part No.
46 SDA 601 Serial Digital Analyzer User Manual
Appendix C: User Service Battery Hints For optimal battery life and capacity, use the rechargeable NiCad battery pack (Tektronix p/n 119-4488-00) in full charge/discharge cycles. In other words, fully discharge the battery pack before recharging, and then charge the battery pack until fully charged, approximately 16 hours. A new battery pack will take a few charge/ discharge cycles to reach full capacity. WARNING.
Appendix C: User Service Low-battery shut down can happen with little or no warning if, for instance, the instrument has been left on by mistake with Auto Power Down disabled. In such cases, the SDA 601 is likely to shut itself down almost immediately the next time you switch it on. If this happens: h Install fresh batteries or operate the instrument with the AC adapter, and h Confirm that the diagnostic menu Battery Type setting is appropriate.
Appendix C: User Service using the optional battery pack, take the time to identify both contacts and install the pack properly. Replacing the Touch Memory/Timer Module The Touch Memory/Timer module has an internal Lithium battery. Eventually, this module will need replacement. Please refer this task to qualified service personnel. The original module has been secured to its holder with RTV sealant. Take the time to renew this sealant after a new module is installed.
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Glossary ØAPCRC (zero active picture CRC) A CRC created by an encoding process in which the last five active video words in the last full line of active video are altered so that the active picture CRC is exactly zero. 4:2:2 A commonly used term for a component digital video format. The details of the format are specified in the CCIR-601 standard document. The numerals 4:2:2 denote the ratio of the sampling frequencies of the single luminance channel to the two color difference channels.
Glossary APCRC (active picture CRC) A CRC derived from the samples in the active picture only. Described in SMPTE RP 165. AUX In the SDA 601, the auxiliary output. The AUX output can be configured as analog “pseudo-video” (unfiltered DAC output) or as the trigger pulse. bit serial Bit-wise transmission of digital video down a single conductor such as coaxial cable. May also be sent through fiber optics. This standard is covered under CCIR 656. bit stream A continuous series of bits transmitted on a line.
Glossary coding Representing each level of a video signal as a number, usually in binary form. component analog The unencoded output of a camera, videotape recorder, etc., consisting of three primary color signals: red, green, and blue (RGB) that together convey all necessary picture information. In some component video formats, these three components have been translated into a luminance signal and two color difference signals, for example, Y, B–Y, R–Y.
Glossary data value group An SDA 601 Watch group that contains: G Illegal (data word) values G Video samples in/out of range The data word values are monitored; illegal values and out of range samples are reported on an “error second” basis. D1 A component digital video recording format that uses data conforming to the CCIR-601 standard. Records on 19 mm magnetic tape. (Often used colloquially to indicate 4:2:2 component digital video.
Glossary EDH flag A digital “marker” inserted in the data stream to feed forward information regarding detected errors. EDH flags are set by many input/output devices to help identify faulty equipment in the signal path. The flags defined in RP-165 are: error detected here; error detected already; internal error detected here; internal error detected already; and unknown error status.
Glossary The four characteristics are monitored. Errors in line/field length, TRS, or ANC format are reported on an error second basis; Zerolength ANC is considered an error, and error seconds are also reported. group See Watch Group. highlighting An SDA 601 operating mode in which pixels in the AUX output that correspond to selected error conditions “flash” when that error occurs. Permits visual monitoring of the frequency and placement of the errors in context of the video signal and picture.
Glossary values, and filter characteristics for both Y, B–Y, R–Y and RGB component digital television. LSB Least significant bit. MSB Most significant bit. multiplexer (mux) Device for combining two or more electrical signals into a single, composite signal. NRZ Non return to zero. A coding scheme that is polarity sensitive. O = logic low, 1 = logic high. NRZI Non return to zero inverse. A video data scrambling scheme that is polarity insensitive.
Glossary in serial video monitors. The original four-word timing reference signals (TRS, which include EAV and SAV) are replaced with legal video samples, and analog H and V syncs inserted in the original active picture region. Rec. 601 See CCIR-601. reclocking The process of clocking the data with a regenerated clock resolution The number of bits (four, eight, ten, etc.) determines the resolution of the digital signal.
Glossary SMPTE 125M Recommended practice for bit parallel digital interface for component video signals. SMPTE 125M defines the parameters required to generate and distribute component video signals on a parallel interface. SMPTE RP-165 Recommended practice for “Error detection checkwords and status flags for use in bit-serial digital interfaces for television.” It defines the APCRC, FFCRC, and EDH flags as well as the ancillary data packets that contain them.
Glossary are the primary means of monitoring the integrity of the transport layer. TRS Timing reference signals in digital video systems (four words long). Defined, for component systems, in SMPTE 125M. truncation Process by which digital signals are converted to lower resolution. The least significant bits (as many as necessary) in each sample are “stripped,” or simply ignored. In digital video, 10-bit samples may be truncated for compatibility with 8-bit equipment.
Manual Change Information At Tektronix, we continually strive to keep up with the latest electronic developments by adding circuit and component improvements to our instruments as soon as they are developed and tested. Sometimes, due to printing and shipping requirements, we can’t get these changes immediately into printed manuals. Hence, your manual may contain new change information on the following pages. A single change may affect several sections.
MANUAL CHANGE INFORMATION Date: Change Reference: M81605 10/13/94 Product: SDA 601 Users Manual P/N: 070–8913–01 Effective S/N: B020000 Text Changes OPERATING BASICS Displaying the Signal Level, Page 20 CHANGE the last sentence preceding the Cursor discussion TO READ: After selecting another operating mode, the Signal Level display may be reselected by pressing the front panel SLM (A) key, or may be toggled On/Off through the Display Select key/menu (see page 29).
Date: 10/13/94 Change Reference: M81605 The first line of the cursor data display contains the hexadecimal values of the selected word and the three that follow it. Values typical for the SAV timing and reference signal are shown in Figure 10. The video “type” of the selected word is indicated by the sample ID: B = CB color difference Y = Cosited luminance R = CR color difference y (lowercase) = Isolated luminance The second line contains the address or coordinates of the selected word.
Date: Change Reference: 10/13/94 M81605 6. The default OSD will obscure any highlighting in the portion of the picture that it occupies. Therefore, if the OSD is on, toggle it off with the Insert On/Off key. Pulse Cross, Page 22, CHANGE the Pulse Cross discussion TO READ: Pulse Cross Pulse Cross is an SDA 601 AUX output mode that allows the user to “see” the horizontal and/or vertical intervals, which are normally blanked in serial video monitors.
Date: 10/13/94 Change Reference: M81605 REFERENCE I/O Menu, Page 29, CHANGE the I/O Menu TO READ: I/O Menu Enter the I/O menu by pressing Shift, then Insert On/Off. (1) (2) (3) (4) Highlighting Off < > On < > On, Dim Video Video Cursor No Display < > Display Pulse Cross Normal < > HCross < > VCross < > Both AUX Pixmon Y < > Pixmon R–Y < > Pixmon B–Y Utility Menu, Page 30, CHANGE the Printer Setup and RS232 Setup portions of the Utility Menu TO READ: (2) (3) Printer Setup..
