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ECO422D SD/HD Changeover Unit Instruction Manual

ix

Service Safety Summary

Only qualified personnel should perform service procedures. Read this

Service

Safety Summary

and the

General Safety Summary

before performing any service

procedures.

Do Not Service Alone.

Do not perform internal service or adjustments of this

product unless another person capable of rendering first aid and resuscitation is
present.

Disconnect Power.

To avoid electric shock, switch off the instrument power, then

disconnect the power cord from the mains power.

Use Care When Servicing With Power On.

Dangerous voltages or currents may

exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.

To avoid electric shock, do not touch exposed connections.

Summary of Contents for ECO422D

Page 1: ...and above 071 1792 01 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all sa...

Page 2: ...nd pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektr...

Page 3: ...duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintena...

Page 4: ......

Page 5: ...2 1 Connectors 2 4 Operating Basics 2 8 State Machine Description 2 8 Exterior Cleaning 2 12 Specifications Introduction 3 1 Theory of Operation Logic Conventions 4 1 ECO422D Block Level Description 4...

Page 6: ...Instructions 7 8 Repackaging Instructions 7 10 Replaceable Electrical Parts Replaceable Mechanical Parts Parts Ordering Information 9 1 Using the Replaceable Mechanical Parts List 9 1 Column Descripti...

Page 7: ...2 2 Figure 2 3 Rear panel of the ECO422D 2 5 Figure 2 4 Remote connector pins 2 6 Figure 2 5 Wiring required to conform with SMPTE fault reporting 2 7 Figure 2 6 Setup for adjusting R265 the user lev...

Page 8: ...Contents iv ECO422D SD HD Changeover Unit Instruction Manual Figure 7 1 Remove these screws and posts before attempting to remove the Connector board 7 8 Figure 7 2 Slide the Connector board out this...

Page 9: ...of channel configuration switches S1 S11 2 3 Table 2 2 Remote connector pin out 2 6 Table 2 3 Truth table for ECO422D switching 2 9 Table 3 1 General characteristics 3 2 Table 3 2 Signal loss detecti...

Page 10: ...Table of Contents vi ECO422D SD HD Changeover Unit Instruction Manual...

Page 11: ...s 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 produc...

Page 12: ...ld 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 WARNIN...

Page 13: ...his product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock switch off the instrument power then disconnect the power cord fr...

Page 14: ...Service Safety Summary x ECO422D SD HD Changeover Unit Instruction Manual...

Page 15: ...ourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately The symbol shown to the left indicates that this product co...

Page 16: ...Environmental Considerations xii ECO422D SD HD Changeover Unit Instruction Manual...

Page 17: ...cs and performance require ments for the ECO422D H Theory of Operation explains how the ECO422D operates H Performance Verification describes how to verify the functional performance of the ECO422D H...

Page 18: ...Preface xiv ECO422D SD HD Changeover Unit Instruction Manual...

Page 19: ...Getting Started...

Page 20: ......

Page 21: ...al relay therefore the ECO422D detects an output reduction as an input reduction This does not apply to the three Option ELSW channels which are buffered To avoid this problem work on an output only w...

Page 22: ...n There are also two user defined checking thresholds available Separate indicators on the front panel display faults for both the primary and backup generator These indicators remain on until cleared...

Page 23: ...ng between 15 and 28 inches The ECO422D requires six inches of clearance between the instrument rear panel and any rear cabinet panel for connector space and to provide adequate air circulation Mounti...

Page 24: ...tarted 1 4 ECO422D SD HD Changeover Unit Instruction Manual Bar nut Rear rack rail PNH screws Figure 1 4 Deep rackmount Rear rack rail PNH screws Bar nut Flush with rear rack rail Figure 1 5 Shallow r...

Page 25: ...ing hardware Installing the Instrument Refer to Figure 1 7 to install the instrument into the rack 1 Pull the slide out track section to the fully extended position 2 Insert the instrument chassis sec...

Page 26: ...several times Once the instrument is in place within the rack tighten the knurled retaining screw to fasten it securely into the rack Rack Slide Maintenance The slide out tracks do not require lubric...

Page 27: ...lone or rackmount use you are ready to connect the power and signal cables to the instrument Figure 1 2 shows the instrument rear panel To supply power to the ECO422D connect the power cord to the pow...

Page 28: ...tput cable from the ECO422D before working on the cable and verify proper termination before reconnecting the cable to the ECO422D There are many different ways to configure the ECO422D The following...

Page 29: ...everal different types of signal checking already available but you may need to feed a different signal through the ECO422D This section gives one example active analog video Active Analog Video The E...

Page 30: ...h There is also a Mode switch switch S14 8 Set it for either Normal or Override operation If set for Normal operation it will not allow you to manually switch to a bad signal unless both signals are b...

Page 31: ...r Configuration and Mode switches Table 1 1 Default configuration of switches DIP Switch Input signal All open Disabled signal not checked 1 NTSC black burst 2 PAL black burst 3 NTSC serial digital vi...

Page 32: ...ble 1 2 Channel configuration switch log S1 S11 Output Switch Setting see above Attenuation set with Sx 8 On Off1 Type of signal attached 1 S1 NA X 2 S2 NA X 3 S3 NA X 4 S4 NA X 5 S5 NA X 6 S6 NA X 7...

Page 33: ...how they interact see Operating Basics Section 2 To check out the entire instrument repeat these procedures for each of the eleven sets of inputs and outputs Power down all instruments Connect the EC...

Page 34: ...ve the cable between the BG7 and the Primary 1 input of the ECO422D Note the signal automatically switches to the Backup input and the Primary fault indicator lights Reconnect the Primary signal sourc...

Page 35: ...between the BG7 and the Backup 1 input of the ECO422D Note that the output signal has changed to the Primary input signal and the Backup fault indicator LED lights Reconnect the Backup signal Replace...

Page 36: ...Getting Started 1 16 ECO422D SD HD Changeover Unit Instruction Manual...

Page 37: ...Operating Basics...

Page 38: ......

Page 39: ...elay Switch on Fault is the default setting During power up the DISABLED LED slowly blinks to indicate disabled front panel and error detection during the power up delay Fault Indicator Reset Primary...

Page 40: ...ne switch from each DIP package should be enabled closed for each channel except for attenuation DIP 8 on switches S7 through S11 which is allowed to be combined with either of the user defined levels...

Page 41: ...annel configuration switches S1 S11 Output Switch Setting see above Attenuation set with Sx 8 On Off Type of signal attached 1 S1 1 or 2 NA X Black Burst 2 S2 1 or 2 NA X Black Burst 3 S3 1 or 2 NA X...

Page 42: ...and the fault indicator is reset In the Override mode the user can manually switch to a bad signal with Auto mode disabled Reference Level Adjustments R266 and R265 These two adjustments set the refe...

Page 43: ...100 to 240 VAC 10 WARNING To prevent personal injury do not connect power to the ECO422D if the top cover is not installed Dangerous potentials are present on the Power Supply board There are 33 vide...

Page 44: ...ne pin tied to ground see Figure 2 4 5 4 3 2 1 6 7 8 9 Figure 2 4 Remote connector pins The pin out is shown in Table 2 2 Table 2 2 Remote connector pin out Pin Signal function 1 Auto switching input...

Page 45: ...ault has been corrected Fault Reporting and It is normally open indicating that everything is good It will close in the cases of loss of power to the ECO422D or one or more input signals are bad The f...

Page 46: ...user configuration switch It can either be N Normal or O Override In Normal mode the ECO422D will not switch to a bad signal In Override operation the user is allowed to manually switch to a bad signa...

Page 47: ...vailable so that the user can trigger on signal levels other than the seven predefined levels In order to set the Threshold Levels you need H Two good versions of the type of signal you want to check...

Page 48: ...Set all of the User Configuration switches to open except for S1 7 for channel 1 3 Set all S14 switches closed 4 Set the ECO422D to Primary Sync Source 5 Set the ECO422D Auto Switching to Switch on Fa...

Page 49: ...in the other direction You are trying to get the minimum signal level to pass through before reaching the switching threshold 10 Set the step attenuator to 3 dB of attenuation or whatever attenuation...

Page 50: ...acts as an insulating blanket preventing proper cooling and possibly causing overheating and component breakdown Under high humidity conditions accumulated dust can also provide an electrical conduct...

Page 51: ...Specifications...

Page 52: ......

Page 53: ...on apply over an ambient temperature range of 0 _C to 40 _C The rated accura cies are valid when the instrument is calibrated at an ambient temperature range of 20 _C to 30 _C after a warm up time of...

Page 54: ...360 MHz 15 dB typical Insertion Loss Channels 1 6 0 2 dB DC to 10 MHz 10 MHz to 1 5 GHz1 Channels 4 6 Opt ELSW Only 0 3 dB DC to 10 MHz Channels 7 11 0 2 dB DC to 10 MHz 0 5 dB 10 to 200 MHz 1 0 dB 2...

Page 55: ...6 Opt ELSW Only Within 100 ns measured with NTSC PAL Black Burst signal Power up delay 4 minutes to allow source generator signals to stabilize With the addition of S13 the delay is adjustable from ze...

Page 56: ...Specifications 3 4 ECO422D SD HD Changeover Unit Instruction Manual Figure 3 2 Typical eye pattern of Channels 1 6 HD output Channels 1 3 with Opt ELSW...

Page 57: ...al Digital Video NTSC Composite 450 to 630 mV 540 mV between 2 and 5 dB down 10 11 Serial Digital Video 270 Mb s 450 to 630 mV 540 mV between 2 and 5 dB down 7 8 Serial Digital Video 1 485 Gb s 450 to...

Page 58: ...ical 40 VA maximum Supply Accuracy 5 V 5 V 5 V 200 mV 5 V 200 mV Hum 5 V 5 V Typical values 10 mV 10 mV Noise 5 V 5 V 5 MHz measurement band width 50 mV 50 mV Crest Factor 1 35 Fuse Required 1 ampere...

Page 59: ...00014 g2 Hz APSD 0 31 overall GRMS 10 minutes axis From 5 to 100 Hz 0 020 g2 Hz APSD From 100 to 200 Hz 3 dB Octave Slope From 200 to 350 Hz 0 010 g2 Hz APSD From 350 to 500 Hz 3 dB Octave Slope At 50...

Page 60: ...Power line surge immunity IEC 61000 4 6 Conducted RF Immunity IEC 61000 4 11 Voltage dips and interruptions immunity EN 55103 2 Annex A Radiated magnetic field immunity EN 55103 2 Annex B Balanced por...

Page 61: ...ectrical and electronic test measuring controlling and related equipment IEC61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use Safety Certification Co...

Page 62: ...y are rated Pollution Degree 1 No pollution or only dry nonconductive pollution occurs Products in this category are generally encapsulated hermetically sealed or located in clean rooms Pollution Degr...

Page 63: ...re for use only by qualified personnel To avoid injury do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so Refer to all safety summaries...

Page 64: ......

Page 65: ...Theory of Operation...

Page 66: ......

Page 67: ...ic Conventions Signal names are all capital letters For example SIGNAL An active low signal normally denoted by an overscore is a signal name enclosed in parentheses For example SIGNAL The aside of a...

Page 68: ...d are applied directly to a Relay where one signal is switched through to the rear panel Output and the other terminates in 75 The rest of the circuitry determines which signal goes to the Output The...

Page 69: ...imary check Primary Backup Relay Output Backup check Primary check DC Other primary channels Other backup channels Backup fault indicator Example of option ELSW channels 4 6 if installed Example of st...

Page 70: ...With Option ELSW the Primary and Backup inputs are terminated in 75 and the Outputs provide a 75 source for the signal path In addition there is a mechanical relay that switches the Primary signal di...

Page 71: ...Performance Verification...

Page 72: ......

Page 73: ...een chosen to minimize changes in equip ment setups Performance parameters may be checked in any order Calibration Data Report The Calibration Data Report that follows can be used to document instrume...

Page 74: ...11 NTSC Serial Digital Composite Switch Backup switch at 2 dB down switch at 5 dB down 13 Serial Digital Audio Switch Primary switch at 2 dB down switch at 4 dB down 14 Serial Digital Audio Switch Ba...

Page 75: ...wn 8 Serial Digital 270 Mb s Switch Backup switch at 2 dB down switch at 5 dB down 10 NTSC Serial Digital Composite Switch Primary switch at 2 dB down switch at 5 dB down 11 NTSC Serial Digital Compos...

Page 76: ...n 8 7 Serial Digital 270 Mb s Switch Backup switch at 2 dB down switch at 5 dB down 10 7 NTSC Serial Digital Composite Switch Primary switch at 2 dB down switch at 5 dB down 11 7 NTSC Serial Digital C...

Page 77: ...itch Backup switch at 2 dB down switch at 5 dB down 10 NTSC Serial Digital Composite Switch Primary switch at 2 dB down switch at 5 dB down 11 NTSC Serial Digital Composite Switch Backup switch at 2 d...

Page 78: ...2 NTSC Black Burst Switch Primary switch at 2 dB down switch at 4 dB down 4 NTSC Black Burst Switch Backup switch at 2 dB down switch at 4 dB down 3 PAL Black Burst Switch Primary switch at 2 dB down...

Page 79: ...K Composite Signal Set Must be able to output serial digital composite video with optional Black output HDVG7 Opt BK 1 485 Gb s Signal Set with optional Black output BG7 Analog Black generator with fo...

Page 80: ...here are no error shown on the front panel 2 NTSC Black Burst Check for Channel 1 Primary Switch between 2 and 4 dB down from nominal Connect the equipment as shown in Figure 5 1 Power down all equipm...

Page 81: ...ion 0 5 dB at a time to the Primary input signal until the signal source switches to the Backup Press the Reset button on the front panel and try to return the signal source to Primary CHECK that the...

Page 82: ...me to the Primary input signal until the signal source switches to the Backup Press the Reset button on the front panel and try to return the signal source to Primary CHECK that the Primary signal sti...

Page 83: ...ackup signal in error after the reset continue adding attenuation until the Backup signal switches to Primary again CHECK that the ECO switches between 2 and 4 dB down 5 PAL Black Burst Check for Chan...

Page 84: ...cally switches back to Primary If the ECO422D does not continue to show the Backup signal in error after the reset continue adding attenuation until the Backup signal switches to Primary again CHECK t...

Page 85: ...all the DIP switches on S1 through S11 to open Set the Channel Configuration switch to Serial Digital Video Component for Channel 1 set S1 4 to closed S1 1 through S1 3 open and S1 5 through S1 8 ope...

Page 86: ...r all channels set all the DIP switches on S1 through S11 to open Set the Channel Configuration switch to Serial Digital Video Component for Channel 1 set S1 4 to closed S1 1 through S1 3 open and S1...

Page 87: ...l No Switch No 2 S2 3 S3 4 S4 5 S5 6 S6 7 S7 8 S8 9 S9 10 S10 11 S11 10 NTSC Serial Digital Composite Check for Channel 1 Primary Switch between 2 and 5 dB down from nominal Connect the equipment as s...

Page 88: ...reset continue adding attenuation until the Primary signal switches to Backup again CHECK that the ECO switches between 2 and 5 dB down 11 NTSC Serial Digital Composite Check for Channel 1 Backup Swi...

Page 89: ...al in error after the reset continue adding attenuation until the Backup signal switches to Primary again CHECK that the ECO switches between 2 and 5 dB down 12 Check Serial Digital Video Composite fo...

Page 90: ...he DIP switches on S1 through S11 to open Set the Channel Configuration switch to Serial Digital Audio for Channel 1 set S1 5 to closed S1 1 through S1 4 open and S1 6 through S1 8 open Set the step a...

Page 91: ...P switches on S1 through S11 to open Set the Channel Configuration switch to Serial Digital Audio for Channel 1 set S1 5 to closed S1 1 through S1 4 open and S1 6 through S1 8 open Set the step attenu...

Page 92: ...2 S2 3 S3 4 S4 5 S5 6 S6 7 S7 8 S8 9 S9 10 S10 11 S11 16 HD Serial Digital Component Check for Channel 1 Primary Switch between 2 and 5 dB down from nominal Connect the equipment as shown in Figure 5...

Page 93: ...again CHECK that the ECO switches between 2 and 5 dB down 17 HD Serial Digital Component Check for Channel 1 Backup Switch between 2 and 5 dB down from nominal Connect the equipment as shown in Figur...

Page 94: ...mary again CHECK that the ECO switches between 2 and 5 dB down 18 HD Serial Digital Component Check for Channels 2 through 11 Switch between 2 and 5 dB down from nominal Repeat the previous two proced...

Page 95: ...Adjustment Procedure...

Page 96: ......

Page 97: ...the two levels available from User Configuration switches SX 6 R266 and SX 7 R265 They are available so that the user can check the levels of signals other than the five predefined levels The procedu...

Page 98: ...Adjustment Procedure 6 2 ECO422D SD HD Changeover Unit Instruction Manual...

Page 99: ...Maintenance...

Page 100: ......

Page 101: ...which will be the most time efficient and cost effective Tektronix maintains service centers around the world to provide quick turn around repair and recalibration services When this service is used e...

Page 102: ...n benzene toluene xylene acetone or similar solvents Clean the exterior surfaces of the instrument with a dry lint free cloth or a soft bristle brush If dirt remains use a cloth or swab dampened with...

Page 103: ...itive 100 to 500 V EL 74F 74ALS and 155 P N parts 200 to 500 V Schottky Signal Diodes 250 V Schottky TTL 500 V High frequency Bipolar Transistors and ICs 400 to 600 V JFETs 600 to 800 V Low frequency...

Page 104: ...tion The Performance Verification and Adjustment Procedures are included in this manual Corrective Maintenance The following procedure is designed to assist in isolating problems which in turn expedit...

Page 105: ...ment The inadvertent movement of leads or a probe could cause a short circuit or transient voltages capable of destroying components Determine the nature of the problem Attempt to make the determinat...

Page 106: ...e customers NOTE When considering which service offerings best suit the current need remember that Tektronix provides a limited parts and service warranty for all its products No customer repairs shou...

Page 107: ...Tektronix instruments are sometimes made to accommodate improved components as they become available and to improve circuit performance Therefore it is important to include the following information w...

Page 108: ...op row of BNCs Then remove the two screws from the posts see Figure 7 1 Next unscrew the posts from the Main board and remove them see Figure 7 1 Finally keeping the board level slide the board toward...

Page 109: ...ake sure BNCs clear rear panel Remove board this way Make sure BNCs clear clips Figure 7 2 Slide the Connector board out this way CAUTION Use extreme care when sliding any of the boards to clear the r...

Page 110: ...ginal packaging is not available or is unfit for use repackage the instrument as follows 1 Obtain a corrugated cardboard carton whose inside dimensions are at least six inches greater than the dimensi...

Page 111: ...Replaceable Electrical Parts...

Page 112: ......

Page 113: ...8 1 ECO422D SD HD Changeover Unit Instruction Manual Replaceable Electrical Parts Refer to the Mechanical Parts List chapter for a complete listing and description of replaceable parts for the ECO422D...

Page 114: ...Replaceable Electrical Parts 8 2 ECO422D SD HD Changeover Unit Instruction Manual...

Page 115: ...Replaceable Mechanical Parts...

Page 116: ......

Page 117: ...n your order H Part number H Instrument type or model number H Instrument serial number H Instrument modification number if applicable If a part you have ordered has been replaced with a new or improv...

Page 118: ...e the U S Federal Catalog handbook H6 1 for further item name identification Following is an example of the indentation system used to indicate relationship 1 2 3 4 5 Name Description Assembly and or...

Page 119: ...MOUNTING PARTS 14 211 0324 00 10 SCR ASSEM WSHR 4 40 X 0 188 PNH SST PASS T 9 TORX DR MACHINE END MOUNTING PARTS 15 671 3241 01 1 A1 FRONT PANEL CKT BD ASSY 16 119 4112 00 1 A4 POWER SUPPLY SWITCHING...

Page 120: ...1000V 8 01 GRAY W BLK BRM STRIPES 0 25 STRIP BOTH 200 0237 04 1 COVER FUHLR PLASTIC 200 2264 00 1 CAP FUSEHOLDER 3AG FUSES 204 0832 00 1 BODY FUSEHOLDER 3AG 5 X 20MM FUSES 220 0187 00 1 NUT HEX 4 40...

Page 121: ...0216 00 1 CABLE ASSY PWR 3 18 AWG 2 5M L BLACK STANDARD ONLY OPTIONAL ACCESSORIES 161 0215 00 1 CABLE ASSY PWR 3 0 75MU 2 5MM L GREY EUROPEAN OPTION A1 ONLY 161 0066 10 1 CA ASSY PWR 3 0 1MM SQ 250V 1...

Page 122: ...Replaceable Mechanical Parts 9 6 ECO422D SD HD Changeover Unit Instruction Manual...

Page 123: ...ECO422D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 A1 FIG 1 EXPLODED VIEW A2 A3 A4 36 37 38...

Page 124: ......

Page 125: ...Appendices...

Page 126: ......

Page 127: ...on ELSW provides electronic switching on channels four five and six instead of the mechanical relay switching used in the standard instrument This enhancement provides faster glitch free switching for...

Page 128: ...Appendix A Options A 2 ECO422D SD HD Changeover Unit Instruction Manual...

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