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DIGITAL DELAY Mega 475, Instruction Manual

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DIGITAL DELAY Mega 475 Instruction Manual Download Page 34

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Pro Mode S.L.E. 

  In Pro Mode the S.L.E.

 

can only be activated by 

pressing the Tap-Down button before the Transbrake is 
engaged.  When activated, the S.L.E. will close the Throttle 
Stop.  This allows the driver to push the gas pedal to wide 
open throttle position and have the engine rev only to the 
preset RPM level.  Once activated the S.L.E. stays on until 
the push-button used to apply the Transbrake is pressed, at 
which time the S.L.E. waits about 1/4 of a second for the 
Transbrake to fully engage then turns off, and the engine is 
returned to full throttle. 

 

Note:

  Pressing the Seven key while the S.L.E is activated, 

cancels the S.L.E. and returns full throttle control. 
 
S.L.E. Throttle Mode

 

 

There are two S.L.E. Throttle Mode settings, High 

and Low.  If set to High, when the S.L.E. Output is activated 
it will put out +12Volts.  If set to Low, when the S.L.E. 
output is activated it will 12Volts.  With the S.L.E. 
line selected, the S.L.E. Throttle Mode is changed by holding 
down the 

ZERO

 key until the output changes states.   

  
S.L.E. Starting Line Mode

 

 

The Starting Line Mode only affects the S.L.E. in 

Bracket Mode.  When turned on and in any P.B. Mode 
except 5, the S.L.E. will activate with the Transbrake 
solenoid or the Tap Down button.  This feature is used when 
the driver wants to stage the vehicle without having the gas 
pedal on the floor.  Or if a Tap Down button has not been 
installed in the vehicle.  With the S.L.E. line selected, use the 

 or 

 key to turn the starting line mode on or off.  When 

turned on an “

L

” will be displayed just before the S.L.E. 

time.    

Note:

  When in P.B. 5 the Starting Line Mode is forced to 

off. 

Summary of Contents for Mega 475

Page 1: ... 1 www RaceDigitalDelay com Mega 475 Instruction Manual ...

Page 2: ...he Mega 475 we started with the Mega 450 added the new ability to control a Dial Display board Then we further improved the design by adding some new features and upgrading others while retaining everything that made the original Mega 450 the bestselling Delay Box The Mega 475 may seem overwhelming at first But even if you have never owned a Mega or Elite series Delay Box the layout of the screens...

Page 3: ...acket Mode While there are new features in the Mega 475 the biggest change is the ability to directly control our full line of V2 Dial Display boards Just enter a new value for Your Dial and the number is automatically displayed on the Dial Display Board The Mega 475 also has the Set and Go Push button Mode This Push button Mode uses the press of one button to apply the Transbrake solenoid Then on...

Page 4: ...een 1 Page 13 Special Functions Screen 2 Page 14 Timers 1 and 2 Page 15 Shift Control Page 16 Dial Board Intensity Control Page 17 Driver s Reaction Tester Page 18 Replay Tach Page 19 Pro Mode Screens Pro Screen Page 20 Timers 1 and 2 Page 21 Shift Control Page 22 Driver s Reaction Tester Page 23 Replay Tach Page 24 Understanding Dial in and Delays Page 25 Special Functions Screen 1 Page 27 Specia...

Page 5: ...ge 61 Three Wire Push button Page 61 High Current Relay Page 61 Grounding Relay Page 61 Back Up Feature Page 62 Bypass Button Page 62 Recommended Wire Gauge Page 63 Wiring Diagram Page 64 Checking the Screen Before Mounting Page 64 Wiring the Dial Display Board Page 65 Warranty Warranty and Disclaimer Page 66 Categorized Contents Bracket The Push button Features Setting P B Mode and Interrupt Time...

Page 6: ... P T S O Page 35 Understanding The Timers Page 36 Understanding Throttle Mode Page 38 Understanding Timer Range Page 35 Bracket S L E Setting S F O Mode to 1 S L E Page 13 Setting S L E Page 14 Understanding the S L E Page 33 Understanding Tap Button Page 53 Additional Button Functions Chart Page 55 Bracket Line Lock Setting S F O Mode to 3 Line Lock Page 13 Understanding S F O Modes Page 32 Under...

Page 7: ...play Tach Screen Bracket Page 19 Understanding Replay Tach Screen Page 47 Dial Display Control Setting Dial Board Intensity Page 19 Understanding Dial Board Control Page 43 Turning off the Dial Board Feature Page 44 Wiring the Dial Display Board Page 65 Categorized Contents Pro Pro Timers Pro Screen Page 20 Setting Timers 1 and 2 Page 21 Setting Throttle Mode Page 21 Setting Timer Range Page 14 P ...

Page 8: ... Shift 1 on Pro Screen Page 20 Setting Shift Control Page 22 Understanding Shift Control Screen Page 39 Understanding Tach and Peak RPM Page 39 Understanding Shift Points Page 39 Understanding Shift Number Page 40 Understanding Shift Mode Page 40 Understanding Shift by Time or RPM Page 40 Changing the Shift Points Page 41 Testing the Shift features Page 42 The Reaction Tester Screen Pro Page 23 Un...

Page 9: ...own set of settings for both Bracket and Pro Modes The Mega 475 can also shift the vehicle by time or RPM up to five shifts Here again the shifter has separate shift points for both Bracket and Pro Mode The Tach and Replay Tach are accurate to 50 RPM increments The Tach also has a built in peak RPM feature The Replay Tach can now store up to 9 passes for later review on the screen of the Mega 475 ...

Page 10: ...that feature or time is turned off For most screens the text is to the left of each line to tell you what value or mode setting is being displayed for that line The exceptions are the Replay Tach and the Driver s Reaction Tester which do not have the text On the far right side of the screen Selection Arrows are used to show which line is currently selected The Next key is used to move the Selectio...

Page 11: ...on as a basic Crossover Delay Box without any changes done to it To use the additional features of the Mega 475 information needs to be entered There are two sets of screens one set for Bracket Mode and one set for Pro Mode Some of the features can only be set while in Bracket Mode For example the S F O Mode is only accessible when in Bracket Mode For this reason it is recommended that you setup t...

Page 12: ...enter a time Or use the or key to increase or decrease the time by one Dial Display explained page 43 Their Dial Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Delay 1 Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Delay 2 used for second hit at the tree...

Page 13: ...t side of the screen are used to show the line that is currently selected Use the NEXT key to change the selected line Tap Up Down Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one How Late Only used when taking two shots at the tree Use the CLEAR key to clear both the How Late information and the Tap Count P B Mode and Interrup...

Page 14: ...cted Use the NEXT key to change the selected line S L E Use the CLEAR key then use the NUMERICAL keys to enter a time Use the or key to turn starting line mode on or off Hold the ZERO key down to change the S L E Throttle Mode P T S O Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one All zero s shown as is off Timer 1 Use the or...

Page 15: ... the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 2 Use the CLEAR key next use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 3 Use the CLEAR key next use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 4 Use the CLEAR key next use the NUMERICAL k...

Page 16: ...LEAR key when the engine is off to clear the Peak RPM Shift Point Use the CLEAR key then use the NUMERICAL keys to enter a Shift Point Or use the or key to increase or decrease the Shift Point value by one Number of Cylinders Settings of 4 5 6 8 10 and 12 are available Use the or key to select the desired setting Shift mode Use the to select the Shift mode HI or LO The Shift Mode can only be chang...

Page 17: ...or decrease the intensity value by one A zero turns off the Day Dial Display Controller feature of the Mega 475 Night Intensity Setting 2nd Line Use the or key to increase or decrease the intensity value by one A zero turns off the Night Dial Display Controller feature of the Mega 475 Note To turn off the Dial Display control part of the Mega 475 set the intensity setting for both Day and Night to...

Page 18: ...h button Mode 5 press the button connected to P B 1 The Mega 475 will now display your reaction time Keep in mind that the reaction time does not directly correlate to the Delay times used on the Dial in and Delay screen This is because the Reaction Tester does not take into account the vehicle s roll out time NOTE While using the Driver s Reaction Tester the Transbrake solenoid will not be activa...

Page 19: ...own on the next line Time The time is in relation to the release of the Transbrake solenoid To jump to a specific time use the CLEAR key then use the NUMERICAL keys to enter the time Or use the or key to scroll through the pass Pass This is the pass being viewed With 1 being the last pass and 9 being 9 passes ago Use the NEXT key to select the desired pass to replay Shift The shifts can be directl...

Page 20: ... the NEXT key to change the selected line Shift 1 Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 1 Timer 1 Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 2 Timer 1 Use the CLEAR key then use the NUMERICAL keys to enter a time Or use the or ke...

Page 21: ...he NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 2 Use the CLEAR key next use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 3 Use the CLEAR key next use the NUMERICAL keys to enter a time Or use the or key to increase or decrease the time by one Stage 4 Use the CLEAR key next use the NUMERICAL key...

Page 22: ...CLEAR key when the engine is off to clear the Peak RPM Shift Point Use the CLEAR key then use the NUMERICAL keys to enter a Shift Point Or use the or key to increase or decrease the Shift Point value by one Number of Cylinders Settings of 4 5 6 8 10 and 12 are available Use the or key to select the desired setting Shift mode Use the to select the Shift Mode HI or LO The Shift Mode can only be chan...

Page 23: ...ected to P B 1 The Mega 475 will now display your reaction time Keep in mind that the reaction time does not directly correlate to the Delay time used on the Pro screen This is because the Reaction Tester does not take into account the vehicle s roll out time NOTE While using the Driver s Reaction Tester the Transbrake solenoid will not be activated This is to prevent any damage to the solenoid fr...

Page 24: ... shown on the next line Time The time is in relation to the release of the Transbrake solenoid To jump to a specific time use the CLEAR key then use the NUMERICAL keys to enter the time Or use the or key to scroll through the pass Pass This is the pass being viewed With 1 being the last pass and 9 being 9 passes ago Use the NEXT key to select the desired pass to replay Shift The shifts can be dire...

Page 25: ...llow light comes on the button is released and then the Crossover time starts counting down When the Crossover time reaches zero the Transbrake is released Thus releasing the vehicle from the starting line and starting the pass When it is desirable not to Crossover set the Dial ins to the same number When the Mega 475 does the subtraction of Your Dial in time from Their Dial in time the difference...

Page 26: ...emory The How Late time is displayed on line 4 of the Tap Multi Tap How Late screen Note No Delay Box including the Mega 475 can tell which hit at the tree is better only which hit at the tree reached zero first This means that if the first release on the opponent s top yellow was a perfect light and the second release on your bottom yellow was red you will red light If you are new to using a Dela...

Page 27: ...ubtracted from the first delay started Because you can Tap Up and Down in a single pass and the Tap amount is the same for both the Tap count will show a sum of the Taps Example if the Tap Amount is 07 and the Tap Up button was pressed once 1 and the Tap Down button was pressed twice 2 the sum is 1 This would be shown on the screen as 1 07 indicating that the result was one Tap Down and 007 was su...

Page 28: ...lay Used Delay Used indicates which delay that was used to release the Transbrake solenoid by displaying either a 1 for Delay 1 or a 2 for Delay 2 The rest of the digits are the How Late time The How Late time shows how much later the Transbrake would have released using the other delay time For example if the Delay Used shows a 2 it indicates that Delay 2 was used to release the Transbrake And if...

Page 29: ...elect the preferred method 1 PB Mode 1 one hit at the tree with one button Use this mode if you only planning on taking one hit at the tree This is the most commonly used mode 2 PB Mode 2 two hits at the tree with two buttons Use this mode if you want to take two hits at the tree with two separate buttons 3 PB Mode 3 two hits at the tree with one button Use this mode if you want to take two hits a...

Page 30: ...restarting the Delay 1 time and P B 2 restarting the Delay 2 time In P B Mode 3 only Push button 1 is used to apply the Transbrake When the button connected to the P B 1 input is pressed the transbrake solenoid is applied and the Cross time dial in difference Delay 1 is reset to the starting point When the button is released the Cross time starts counting down If the button is pressed again the De...

Page 31: ...n before the Transbrake releases the Mega 475 will restart the full delay sequence again This can be very helpful if you flinch and press the push button before the tree comes on Push button Interrupt Time The Push button Interrupt Time is a safety feature that keeps the Transbrake from being reapplied when a button is accidentally bumped or pressed during a pass This safety feature only affects t...

Page 32: ...inal to function as a Line Lock Control This allows the Line Locks to be used for a burnout and at the starting line 4 S F O Mode 4 Sets the S F O output terminal to function as a spare Transbrake output This can be used if the main Transbrake output was damaged by a short 5 S F O Mode 5 Turns the S F O output terminal off Note If the S F O terminal is not going to be used set the S F O mode to 5 ...

Page 33: ...e S L E to activate Once activated the S L E stays on until the Transbrake Delay time is counting down While the Transbrake Delay time is counted down the Mega 475 compares the S L E time to the remaining Delay time When the Delay time becomes less than the S L E time the S L E Output is turned off and the engine is returned to full throttle Any value between 0 00 and 9 99 can be used as a S L E t...

Page 34: ... S L E Throttle Mode settings High and Low If set to High when the S L E Output is activated it will put out 12Volts If set to Low when the S L E output is activated it will remove 12Volts With the S L E line selected the S L E Throttle Mode is changed by holding down the ZERO key until the output changes states S L E Starting Line Mode The Starting Line Mode only affects the S L E in Bracket Mode...

Page 35: ...time the Tap Down button is pressed while in either Stage 1 or 2 the P T S O time amount is subtracted from Stage 2 Each time the Tap Down button is pressed while in either Stage 3 or 4 the P T S O time amount is subtracted from Stage 4 Note To turn off the P T S O enter all zeros for the P T S O value When off will be displayed Timer 1 Range Each 4 Stage Timer also has a Timer Range setting The T...

Page 36: ...ge 2 starts counting down and at the completion of Stage 3 the time for Stage 4 starts counting down Additionally the Stage 3 time must be greater than the Stages 1 and 2 times added together If the Stage 3 time is less than the total of Stages 1 and 2 added together or if Stages 3 and 4 are set to zero Stages 3 and 4 will be turned off Another way of looking at the Stage timing is Stage 1 is how ...

Page 37: ...s on for the rest of the pass enter a Stage 2 time greater than the vehicle s ET The Chart below shows the operation of the 4 Stage Timer in relation to the release of the Transbrake solenoid Crossover Delay 01 35 Starting Line Enhancer 00 40 Timer 1 1 000 Timer 2 2 000 Timer 3 08 00 Timer 4 00 50 ...

Page 38: ...osite of Stage 1 in this example the Throttle Mode for Stage 2 has to be on Therefore at the completion of Stage 1 the output will switch and put out 12Volts for the duration of the Stage 2 time To change the Throttle Mode on any 4 Stage Timer screen hold down the Zero key for two seconds Canceling a Timing Cycle Using the Clear Key Pressing the clear key after the Transbrake has released will can...

Page 39: ...ach pass The 5 shifts can be made by time RPM or a combination of both The shifts occur in sequence starting with Shift Number 1 and progressing to Shift Number 5 As each shift is completed the Mega 475 checks to see if the next Shift Point setting is valid If the next shift point is invalid the shift routine is terminated and no further shifts will occur The only invalid RPM setting is zero If th...

Page 40: ...t Mode Down Arrow key The Shift Mode is used to select whether 12 Volts is applied or removed from the output for the shift Select the setting LO Normally Closed for shifter requiring the removal of 12Volts to shift Select the setting HI Normally Open for a shifter requiring 12Volts to shift The Shift Mode can only be changed when viewing the first shift To change the Shift Output while the Shift ...

Page 41: ...unit is ready to accept the new Shift Point Now using numerical keys enter the new Shift Point leading zeros do not have to be entered For example if a time of 2 35 for a Shift Point was desired 235 would be entered on the keypad If less than four digits are entered for a Shift Point pressing the Next key will act as an enter key and the leading zeros will be displayed on the LCD As the numbers ar...

Page 42: ...on time After entering the shift press and release the button connected to the P B 1 terminal One second after the Transbrake releases the shifter should move from low gear to second gear If the Mega 475 passes the second test continue on to the final test If the shifter does not move check to see if when the button connected to the P B 1 terminal is pressed and held that the text Transbrake On co...

Page 43: ...inal on the Mega 475 If the Tach is showing an RPM but seems to be off check the Number of Cylinders setting on line 3 If you are still having problems contact Digital Delay Understanding Dial Board Control When Your Dial is selected on the Mega 475 using the Selection Arrows after a short pause Your Dial time will flash between the 3 dashes and the dial amount While Your Dial is flashing the Dial...

Page 44: ... and the Dial Display board the bottom line on the Mega 475 screen will flash between three dashes and an error code number E 01 A No Board error code of 1 shown as E 01 on the screen means the Mega 475 cannot detect the Dial Display board This can be caused by the Dial Display not having power or there is a problem with the purple wire not making connection between the Mega 475 and the Dial Displ...

Page 45: ... the driver s reaction time If the driver lets go of the button too soon before the display turns on dashes will be shown on the screen to indicate a red light If the driver does not let go of the button within 75 seconds after the eights are displayed the display will show reaction time of all nines to indicate a missed light If you take more than one practice shot while in the Driver s Reaction ...

Page 46: ... locations for consistency and speed Start by getting a reaction time average at least 10 passes Then compare with an average from either another push button or the same button mounted in a different location NOTE The CLEAR key can be used to reset the Average Driver s Reaction time NOTE When in the Driver s Reaction Test Mode the Transbrake solenoid will not be activated This is to prevent any da...

Page 47: ...cording will be displayed on the screen Each time a pass is recorded the oldest pass pass 9 is erased Replaying a Pass To replay a recorded pass the engine must be turned off Then when the Replay Tach screen is being displayed the top row of digits display the engine RPM with the next row down being the corresponding time The time is relative to the release of the Transbrake The third line will di...

Page 48: ...ite Arrow key is pressed and released the scrolling speed will slow down Example if the Up Arrow key was pressed three times to get a faster scrolling speed pressing the Down Arrow key once would cause the scrolling speed to slow down Pressing the Down arrow an additional two times would cause the scrolling to stop If the Down Arrow was then pressed again the time would start scrolling down The la...

Page 49: ...h button is listed below individually to explain their functions depending on these conditions Button 1 Functions Note P B Mode 1 4 start timing on the release of the button P B 5 is the opposite and starts timing on the press of the button When in Bracket Mode P B Mode Set to 1 This is the most commonly used setting Press the button down when staging the vehicle and then release the button usuall...

Page 50: ...wn The button is then pressed and released a second time which starts the Delay 2 time counting down The Transbrake will release when either of the delay times reaches zero even if this results in a red light The main benefit of this setting is it allows two shots at the tree using only one push button in case you missed the tree with your first release The downside is you cannot reset the first d...

Page 51: ...elay 1 time again This is helpful if the driver flinches presses the button before the top yellow comes on When in Pro Mode P B Mode is set to 1 2 3 or 4 When the P B mode is set to 1 2 3 or 4 the Mega 475 will automatically use P B Mode 1 for Pro mode This is because P B modes 2 3 and 4 won t work with a Pro Tree Press the button down when staging the vehicle and then release the button when the ...

Page 52: ... be engaged to back up The back up feature is explained on page 62 There is no second or third function for Button 2 in Bracket Mode P B Mode is Set to 5 The first function for Button 2 is to set the Transbrake solenoid When the button is pressed the Transbrake will engage however on the release of the button the timing is started There is no second or third function for Button 2 in Bracket Mode W...

Page 53: ...ge 33 The second function for the Tap button is to Tap Down allowing time to be subtracted from the first delay started The Tap Down feature is explained on page 28 The third function for the Tap button is to activate the P T S O a Timer 1 Tap feature The P T S O feature is explained on page 35 When in Pro Mode Any P B Mode The first function for the Tap button is to set the S L E so the vehicle c...

Page 54: ...ne Lock button is Tap Up allowing time to be added to the first delay started The Tap Up feature is explained on page 27 There is no third function for the Line Lock button in Bracket Mode When in Pro Mode Any P B Mode The first function for the Line Lock button is to activate the Line Lock solenoid s for a burn out This also arms the Replay Tach at the same time There is no second or third functi...

Page 55: ... 55 ...

Page 56: ... the Master Cutoff switch or the Starter Solenoid Use whichever one is closer to the Mega 475 The gauge of the power wire needs to be selected according to current load To figure out your total current load add up the individual current draw of each device connected to an output on the Mega 475 Then use the list below to see what gauge power wire you need 1 15 Amps 14 gauge 16 25 Amps 12 gauge 26 ...

Page 57: ...re from your Linkage Stop solenoid to the S L E terminal Connect the other wire from the Linkage Stop solenoid to a ground If you want to use an Air Under the Carb Throttle Stop as an S L E you can use the S L E output Terminal If you want to use an Electric Under the Carb Throttle Stop as an S L E you must wire in an external relay to handle the higher current of the Electric Throttle stop 2 Time...

Page 58: ...ed to a Throttle Stop or some other device to be controlled by the 4 Stage timer down track Depending on what is being controlled by Timer 1 the Throttle mode can be set so the output will supply or remove 12 Volts The Timer output cannot supply ground One wire from the device needs to be connected to the T Stop terminal and the other wire from the device needs to be connected to ground Note If th...

Page 59: ...e push button to the P B 1 Terminal The other wire from the button is then connected to ground No other connections to the push button wires should be made See page 49 for more information on setting button modes P B 2 Terminal P B 2 stands for Push button 2 Connect either wire from an optional push button to the P B 2 Terminal The other wire from the button is then connected to ground See page 49...

Page 60: ...ferent operations 1 Any time before the vehicle is staged pressing the Line Lock push button will arm the Replay Tach for recording 2 With the S F O mode is set to 3 and before the Transbrake is engaged if Line Lock push button is pressed the Line Lock solenoid s connected to S F O will be engage for the burn out 3 After a Transbrake push button has been released every time the Line Lock push butt...

Page 61: ...ed an external relay needs to be wired between the output and the device To wire the additional relay Connect pin 85 to the desired terminal strip output Connect pin 86 to ground Connect pin 87 to power Connect pin 30 to the device Grounding Relay If the device to be controlled needs Ground instead of 12 Volts an external relay needs to be wired between the output and the device To wire the additi...

Page 62: ...he button connected to the P B 2 input can be used to back up the vehicle without starting a delay cycle Press the button to engage the Transbrake to back up When done press the CLEAR key on the keypad to release the Transbrake without starting a timing cycle If the S L E is being used and the starting line feature is turned the S L E will also turn on when backing up Bypass Button If Button 2 is ...

Page 63: ...re a Voltage drop will occur The larger the wire the smaller this voltage drop will be To minimize the voltage drop through the vehicle wiring use the listing below to select the wire gauge needed 1 15 Amps 14 gauge 16 25 Amps 12 gauge 26 40 Amps 10 gauge 41 60 Amps 8 gauge 61 80 Amps 6 gauge 81 120 Amps 4 gauge The length of wire also affects the amount of the Voltage drop Every foot of wire used...

Page 64: ... of the large LCD care should be taken when mounting the unit to make sure that the display is angled towards the driver s eyes Before mounting the Mega 475 place the box in the desired location and check the legibility of the display in both day and night conditions ...

Page 65: ...to the Purple wire on a V2 Mega Dial display board This wire is the data out from the Dial Display Tan Wire Connect the Tan wire from the Mega 475 to the Taillight circuit in the vehicle When the taillight is turned on the Tan wire is supplied power and the Night intensity setting is selected When the taillight is turned off power is removed from the Tan wire and the Day intensity is selected Note...

Page 66: ...ital Delay Inc and Digital Delay Electronics Inc against damages claims and expenses arising out of subsequent sales of or use of Digital Delay Inc and Digital Delay Electronics Inc products or products containing components manufactured by Digital Delay Electronics Inc and based upon personal injuries deaths property damage lost profits and other matters which BUYER its employees or sub contracto...

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