Tektronix 070-8811-08 User Manual

User Manual764 Digital Audio Monitor(Serial Number B020000 and Above)070-8811-08This document supports firmware version 2.1 andabove.www.tektronix.com

764 Digital Audio Monitor User ManualviiGeneral Safety SummaryReview the following safety precautions to avoid injury and preventdamage to this produc

Appendix B: Error/Warning Messages764 Digital Audio Monitor User Manual85INPUT UNLOCKEDLocation: In-bar.The 764 is not locked to an incoming signal on

Appendix B: Error/Warning Messages86764 Digital Audio Monitor User ManualMUTELocation: In-bar.The MUTE indicator flashes when the digital audio data o

Appendix B: Error/Warning Messages764 Digital Audio Monitor User Manual87NOT PRESENT (Option 01 only)Location: In-bar.The NOT PRESENT flag indicates t

Appendix B: Error/Warning Messages88764 Digital Audio Monitor User ManualTo determine the exact cause of a SYNC ERR flag, select the 764Session displa

764 Digital Audio Monitor User Manual89Appendix C: OptionsThis section describes the following options available with the 764Digital Audio Monitor:H O

Appendix C: Options90764 Digital Audio Monitor User ManualTable 30: Option 01 characteristics (Cont.)Characteristic DescriptionEqualization range Prop

Appendix C: Options764 Digital Audio Monitor User Manual915. Turn the multi-function knob to highlight the Channels menuitem; then press the soft butt

Appendix C: Options92764 Digital Audio Monitor User Manualabove to select a group with active audio channels; then pressCLEAR MENU to return to the au

Appendix C: Options764 Digital Audio Monitor User Manual93NOT PRESENT. The in-bar NOT PRESENT flag indicates that,although video input is detected, th

Appendix C: Options94764 Digital Audio Monitor User ManualOption 02 instruments are set during manufacture for fixedoutput; refer to Configuring the O

General Safety Summaryviii764 Digital Audio Monitor User ManualUse in a Proper EnvironmentDo not operate this product in wet/damp locations/conditions

Appendix C: Options764 Digital Audio Monitor User Manual95Configuring the OutputQualified service personnel can change the output configuration withth

Appendix C: Options96764 Digital Audio Monitor User Manual3. Locate J913 and J914, the two rows of six connector pins on theAES circuit board assembly

Appendix C: Options764 Digital Audio Monitor User Manual97Connecting the InstrumentThe appropriate method of connecting the Option 02 analog outputsto

Appendix C: Options98764 Digital Audio Monitor User ManualPin 3 (–)Pin 2 (+)Pin 1 (shield)Analog line output XLR(+)GndReceiving equipmentunbalanced in

Appendix C: Options764 Digital Audio Monitor User Manual99Power CordsTable 33 lists and describes the available power cord options. Pleasecontact your

Appendix C: Options100764 Digital Audio Monitor User Manual

764 Digital Audio Monitor User Manual101GlossaryCLIPOne or more consecutive positive or negative full scale samples.The actual number of consecutive s

Glossary102764 Digital Audio Monitor User ManualTest LevelAlso called “alignment” or “reference” level. Usually, the signallevel used for system align

764 Digital Audio Monitor User Manual103IndexAaccessories, standard, 1AGC, 28alignment level, 43See also test levelAudio view, 13Bballistics (meter),

Index104764 Digital Audio Monitor User ManualGet commands, 68Hheadphones, 7selecting channels, 48Headphones submenu, 48, 56IIEEE 152-1991, 44Ignore Va

General Safety Summary764 Digital Audio Monitor User ManualixSymbols on the ProductThe following symbols may appear on the product: DANGERHigh Voltage

Index764 Digital Audio Monitor User Manual105channel pairing, 16format, 26, 54submenu, 54PPM (meter ballistics), 43Press commands, 70Product Support,

Index106764 Digital Audio Monitor User ManualUUser Data view, 15, 39VValidity Bit, ignore, 52VGA video output, 5VIEW buttons, 16ViewsAudio, 13Channel

General Safety Summaryx764 Digital Audio Monitor User Manual

764 Digital Audio Monitor User ManualxiPrefaceThe Tektronix 764 Digital Audio Monitor shown in Figure 1 is a toolfor monitoring the signal levels and

Prefacexii764 Digital Audio Monitor User ManualH Operating Basics — What you’ll need to know for day-to-dayoperation of the 764. Begins on page 13.H R

764 Digital Audio Monitor User Manual1Getting StartedThis section contains information you’ll need to put your 764 DigitalAudio Monitor into service.

Getting Started2764 Digital Audio Monitor User ManualOrder the appropriate enclosure through your nearest Tektronix fieldoffice or representative.WARN

Getting Started764 Digital Audio Monitor User Manual3Figure 3: The 764 rear panel and connectors(1) Digital Audio Inputs and Loop-ThroughsThe 764 has

Getting Started4764 Digital Audio Monitor User ManualNOTE. The male XLR connectors of instruments equipped with Option 02 (Analog Line Output) are lab

Copyright © Tektronix, Inc. All rights reserved.Tektronix products are covered by U.S. and foreign patents, issued andpending. Information in this pub

Getting Started764 Digital Audio Monitor User Manual5NOTE. The balanced (XLR) loop-throughs are the default 764 inputs.To receive a signal through the

Getting Started6764 Digital Audio Monitor User ManualVGA or SVGAMonitorTektronix 764 MonitorFrom VGA VIDEO OutputFigure 5: Using an external color mon

Getting Started764 Digital Audio Monitor User Manual7Tektronix 764 MonitorPrinterComputerVia RS-232Print or StoreFigure 6: Outputting a session report

Getting Started8764 Digital Audio Monitor User ManualFigure 7: The headphone output (schematic)By factory default, the headphone output automatically

Getting Started764 Digital Audio Monitor User Manual9Initial Power Up and ConfigurationOnce you have connected a signal source to at least one of the

Getting Started10764 Digital Audio Monitor User ManualPerform the following steps to select the input types and familiarizeyourself with the 764 menu

Getting Started764 Digital Audio Monitor User Manual11Figure 10: Selecting from the top menu4. The five buttons immediately to the right of the displa

Getting Started12764 Digital Audio Monitor User ManualFigure 11: The inputs submenu6. Turn the multi-function knob to move the menu highlight to the“C

764 Digital Audio Monitor User Manual13Operating BasicsThis section contains the basic information needed to use your 764.The subsections are: Overvie

Operating Basics14764 Digital Audio Monitor User ManualThe left portion of the Audio view display always contains four “bargraph” level meters. The ri

WarrantyTektronix warrants that the 764 Digital Audio Monitor will be freefrom defects in materials and workmanship for a period of one (1)year from t

Operating Basics764 Digital Audio Monitor User Manual15without requiring constant operator attention. When errors and peaksare encountered, they are t

Operating Basics16764 Digital Audio Monitor User Manualmenus), then the VIEW:USER DATA button. You may select anumber of User Data view options with t

Operating Basics764 Digital Audio Monitor User Manual17The SESSION button selects a Session Statistics panel,illustrated in Figure 12. Refer to The Se

Operating Basics18764 Digital Audio Monitor User ManualLED immediately above the knob will light and a knob icon willappear in the upper-right of the

Operating Basics764 Digital Audio Monitor User Manual19Figure 15: The 764 Level Meters(1)Meter Ballistics (i.e., dynamic response, or attack/decay cha

Operating Basics20764 Digital Audio Monitor User ManualFigure 16: The sum and difference display modes(3)Peak Program level. The Peak Program level is

Operating Basics764 Digital Audio Monitor User Manual21H Shape: The upper 20 dB of the scale is linear in dB; the scaleis progressively compressed bel

Operating Basics22764 Digital Audio Monitor User ManualPlease be aware that although the peak indicators may revealhigher peaks than VU or PPM ballist

Operating Basics764 Digital Audio Monitor User Manual23Press METER SCALE:NORMAL to restore the default meterscale; to later restore the “custom” scale

Operating Basics24764 Digital Audio Monitor User ManualFigure 18: The Level Meters submenu5. Again, use the multi-function knob to scroll the menu hig

764 Digital Audio Monitor User ManualiTable of ContentsGeneral Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface x

Operating Basics764 Digital Audio Monitor User Manual25the button down—or until you reach an adjustment limit.)Changes are confirmed by changed text a

Operating Basics26764 Digital Audio Monitor User ManualFigure 20: Sum and difference bars and the session displayThe Phase DisplayThe 764 Phase displa

Operating Basics764 Digital Audio Monitor User Manual27Figure 21: The 764 phase displayThe Lissajous PatternThe Lissajous portion of the phase display

Operating Basics28764 Digital Audio Monitor User Manual+1 when the channels contain identical signals (frequency andphase); it will measure –1 when th

Operating Basics764 Digital Audio Monitor User Manual29The Session DisplayThe session display is a dynamic readout of session history; it isillustrate

Operating Basics30764 Digital Audio Monitor User ManualSession time. The instrument time-stamps any errors encounteredduring the Session with the chos

Operating Basics764 Digital Audio Monitor User Manual31H Number of CLIPs detected during the session. This is directlyaffected by the “Consecutive FS

Operating Basics32764 Digital Audio Monitor User ManualSYNC ERR flags as shown in Figure 24. Please see the followingparagraphs for more information.F

Operating Basics764 Digital Audio Monitor User Manual33displays under the meter bars of the unsynchronized input.Figure 24 shows the flags as they wou

Operating Basics34764 Digital Audio Monitor User ManualSession ReportsThe 764 can output the data collected during a session—in the formof ASCII text

Table of Contentsii764 Digital Audio Monitor User ManualFeatures of the Session Display 29. . . . . . . . . . . . . . . . . . . . . Session Statistics

Operating Basics764 Digital Audio Monitor User Manual35The short report, shown in Figure 26, is a record of what happenedduring the session. It contai

Operating Basics36764 Digital Audio Monitor User ManualThere are two types of time-stamped information, peak readings anderror events. Peak readings a

Operating Basics764 Digital Audio Monitor User Manual37The Channel Status ViewThe 764 Channel Status view displays the channel status informationthat

Operating Basics38764 Digital Audio Monitor User ManualH In binary display mode (illustrated in Figure 29), you may turnthe multi-function knob to hig

Operating Basics764 Digital Audio Monitor User Manual39The User Data ViewThe 764 User Data view is intended to display optional userinformation that m

Operating Basics40764 Digital Audio Monitor User ManualSaving and Restoring SetupsThe 764 automatically stores current front panel and menu settings i

Operating Basics764 Digital Audio Monitor User Manual41been restored”—will appear on screen to signal that theoperation is complete.4. Press CLEAR MEN

Operating Basics42764 Digital Audio Monitor User Manual

764 Digital Audio Monitor User Manual43ReferenceThis section contains detailed information about the more technicalaspects of 764 operation. The subse

Reference44764 Digital Audio Monitor User Manualalways indicated by the peak segment, so actual headroom is alwaysvisible.With VU ballistics, the Test

Contents764 Digital Audio Monitor User ManualiiiOperating Information 90. . . . . . . . . . . . . . . . . . . . . . . . . . . . Changes to the Session

Reference764 Digital Audio Monitor User Manual45CODE ERR — A bi-phase coding violation (ERRor) has occurred inthe digital data stream. All affected da

Reference46764 Digital Audio Monitor User ManualV BIT — Indicates that the Validity bit is set high for one or more datasamples. In the AES/EBU standa

Reference764 Digital Audio Monitor User Manual47and(sign) +() 1)if4fsń60ȍn +0(LnRn)is u 0or(sign) +(–1)if4fsń60ȍn +0(LnRn)is t 0The actual correlation

Reference48764 Digital Audio Monitor User ManualSelecting Headphone ChannelsBy factory default, the headphone output follows the phase display.That is

Reference764 Digital Audio Monitor User Manual49Table 2: Level Meters submenu Item Choices Factory settingDisplay Mode 4 ChannelsCh 1–2 and Sum &

Reference50764 Digital Audio Monitor User Manualor channels 3–4); the right-hand bars show (L+R)/2 (Sum) and(L–R)/2 (Diff) data derived from the two l

Reference764 Digital Audio Monitor User Manual51H Extended VU, a VU meter as defined in IEEE 152–1991, butwith an extended dB-linear scale. The 764 me

Reference52764 Digital Audio Monitor User Manualpage 19) appears in a level meter, and it also affects the number ofclips detected during a Session an

Reference764 Digital Audio Monitor User Manual53The De-emphasis SubmenuThe De-emphasis submenu, shown in Table 3, lets you select theappropriate de-em

Reference54764 Digital Audio Monitor User ManualFigure 34: The De-emphasis flagsThe Phase Display SubmenuUse the Phase Displaly submenu (Table 4) to c

Table of Contentsiv764 Digital Audio Monitor User ManualFigure 21: The 764 phase display 27. . . . . . . . . . . . . . . . . . . . . . Figure 22: The

Reference764 Digital Audio Monitor User Manual55display orientation. Refer to page 26 for details on the phase displayformats.Correlation Meter Speed.

Reference56764 Digital Audio Monitor User ManualHeadphones SubmenuUse the Headphonse submenu (Table 5) to determine the inputchannels to be decoded an

Reference764 Digital Audio Monitor User Manual57Table 7: Option 01 input submenu, audio inputs selected Item Choices Factory settingAudio Source Digit

Reference58764 Digital Audio Monitor User ManualSerial Port SubmenuThe Serial Port submenu contains items used for setting the serialport parameters a

Reference764 Digital Audio Monitor User Manual59Peak Reading Interval (sec). Use this item to choose the duration of thepeak reading intervals. When a

Reference60764 Digital Audio Monitor User ManualRestore Setups SubmenuRestore a previously saved instrument configuration through theRestore Setups su

Reference764 Digital Audio Monitor User Manual61Service SubmenuUse the Service submenu (Table 14) to select patterns for use inadjusting the display;

Reference62764 Digital Audio Monitor User ManualUsing the RS-232 PortThe primary use of the 764 RS-232 port is to output session reports.The reports c

Reference764 Digital Audio Monitor User Manual63NOTE. RS-232 signals are named from the perspective of the DTEdevice. Since the 764 is a DCE device, p

Reference64764 Digital Audio Monitor User ManualFigure 36: Connecting to a DCE device with a DB25 serial portNOTE. Most Personal Computers are DTE dev

Contents764 Digital Audio Monitor User ManualvTable 8: Option 01 input submenu, video inputs selected 57. . . Table 9: Time Code submenu 57. . . .

Reference764 Digital Audio Monitor User Manual65H Printer Communications Settings:ESP (automatic protocol sensing)9600 (baud)8 (bits)1 (stop bit)DTR/D

Reference66764 Digital Audio Monitor User ManualOutputting a Session ReportYou can test your RS-232 connection by outputting a short sessionreport.1.

Reference764 Digital Audio Monitor User Manual67The example command gets the time, gets the sample rate from theChannel 3 – Channel 4 input, and press

Reference68764 Digital Audio Monitor User ManualTable 16: General remote control commands (Cont.)Command EffectMSGON:<text> Displays a temporary

Reference764 Digital Audio Monitor User Manual69Table 17: Remote control GET commands (Cont.)Command RetrievesValue = selectionGET:WARFLAG:<0–3>

Reference70764 Digital Audio Monitor User ManualPRESS Commands. Each front-panel button (except the power switch)has an equivalent PRESS:<button&g

Reference764 Digital Audio Monitor User Manual71MENU Commands. Use the MENU commands listed in Table 19 tomake selections from the 764 on-screen menu

Reference72764 Digital Audio Monitor User ManualTable 19: Remote control MENU commands (Cont.)Command Submenu, itemValue = settingMENU:SYNCF:<0–1&g

Reference764 Digital Audio Monitor User Manual73Table 19: Remote control MENU commands (Cont.)Command Submenu, itemValue = settingMENU:PBRIGHT:<0–3

Reference74764 Digital Audio Monitor User ManualTable 19: Remote control MENU commands (Cont.)Command Submenu, itemValue = settingMENU:BAUD:<0–3>

Table of Contentsvi764 Digital Audio Monitor User Manual

764 Digital Audio Monitor User Manual75Appendix A: SpecificationsTable 20: Digital audio inputs Characteristic Performance require-mentsSupplemental i

Appendix A: Specifications76764 Digital Audio Monitor User ManualTable 21: Level Meters and Phase Display Characteristic Performance require-mentsSupp

Appendix A: Specifications764 Digital Audio Monitor User Manual77Table 23: Interface parameter measurements (Cont.)Supplemental informationPerformance

Appendix A: Specifications78764 Digital Audio Monitor User ManualTable 25: VGA output (Cont.)Characteristic InformationLoad ImpedanceRedGreenBlueHoriz

Appendix A: Specifications764 Digital Audio Monitor User Manual79Table 26: Physical characteristics (Cont.)InformationCharacteristicDepth 17 inches (4

Appendix A: Specifications80764 Digital Audio Monitor User ManualTable 28: Environmental characteristics (Cont.)Characteristic InformationTransportati

Appendix A: Specifications764 Digital Audio Monitor User Manual81Table 29: Certifications and compliances (Cont.)Australia/NewZealand Declarationof Co

Appendix A: Specifications82764 Digital Audio Monitor User Manual

764 Digital Audio Monitor User Manual83Appendix B: Error/Warning MessagesThis appendix lists and explains the various error and warningmessages that c

Appendix B: Error/Warning Messages84764 Digital Audio Monitor User ManualCODE ERRLocation: In-bar.(Code error.) A bi-phase coding violation has occurr