FB4 Manual BETA - Pangolin Laser Systems Inc.
Contents
1. The scan fail monitor would also be connected to a shutter or to the laser diode drivers but the method of connection depends on the exact scan fail monitor being used Consult the manufacturer of the scan fail monitor for details The color signals are connected in exactly the same way as the X and Y signals were connected using differential signaling ILDA DB 25 pin 5 is connected to the positive modulation input on the red laser diode driver while pin 18 is connected to the negative modulation input ILDA DB 25 pin 6 is connected to the positive modulation input on the green laser diode driver while pin 19 is connected to the negative modulation input ILDA DB 25 pin 7 is connected to the positive modulation input on the blue laser diode driver while pin 20 is connected to the negative modulation input The discussion about color signals above as well as the diagram makes the assumption that the laser diode driver has differential inputs to begin with As two examples laser diode drivers made by Laserwave and by Viasho do have differential inputs but as two other examples laser diode drivers made by CNI and Melles Griot do not Also it is possible that the laser projector would have an ion laser and PCAOM used for color modulation In this case the same connection scheme and discussion applies PCAOM drivers made by NEOS do have differential inputs but PCAOM drivers made by AA do not In genera2. 25 Connectors For projectors the ISP specification states that the DB 25 connector should be a male connector However I recommend putting two connectors on the projector one male and one female This maximizes ease of use because it allows the use of any type of DB 25 cable between the projector and signal source and also allows easy daisy chainng of multiple projectors when needed 28 FB4 User Manual Beware of fhe Phantom Ground Connections Above we have discussed the benefits of using a single point grounding scheme One thing to be aware of is that even when the wire connections are made carefully it is possible that the components themselves might provide phantom connections to ground thus destroying the single point grounding scheme and creating more of a spider web shaped grounding scheme For example this would happen if the metal housing of a DPSS laser is connected to the laser diode driver s ground connection A phantom ground connection would be made by screwing the metal DPSS laser housing down to the metal base plate in the laser projector Therefore when assembling the laser projector you will need to use an ohm meter to identify which components have metal parts connected to the electrical ground and which might come in contact with the base plate or other conductive projector parts Once such parts have been identified they should be isolated from the projector base plate I always recommend using nylo
3. Color 3 Blue 0 to 5V 4 Color 4 Deep Blue 0 to 5V 5 Color 5 Yellow 0 to 5V 6 Color 6 Cyan 0 to 5V 7 Shutter 0 to 5V 8 GND ILDA DB 25 Pinouts Appendix A FB4 Connections If you want to connect FB4 Axis and Color outputs to an ILDA DB25 connector the relevant signal names pin numbers and voltage levels are described below Signal name X Y Intensity Blanking Interlock A Red Green Blue Deep blue Yellow Cyan Z Not connected Shutter X Y Intensity Blanking Interlock B Red Green Blue Deep blue Yellow Cyan Z Ground Pin Voltage level Notes 1 5V to 5V 2 5V to 5V 3 not applicable to FB4 4 connect to pin 17 5 OV to 5V 6 OV to 5V 7 OV to 5V 8 OV to 5V 9 OV to 5V 10 OVto 5V 11 not applicable to FB4 12 13 0V to 5V 14 5V to 5V 15 5V to 5V 16 not applicable to FB4 17 connect to pin 4 18 connect to pin 25 19 connect to pin 25 20 connect to pin 25 21 connect to pin 25 22 connect to pin 25 23 connect to pin 25 24 not applicable to FB4 25 Common ground cable shield 9 10 Lasershow Player model FB4 User Manual Shutter Actuator Output Connector FB4 has a built in PWM output which may be connected directly to an actuator for the purposes of implementing a redundant mechanical shutter The signals are described below Shutter Actuator Output Pin Signal name 1 GND 2 PWM Voltage Ou
4. Connector FB4 may be connected to an optional daughterboard which provides DMX Input and DMX Through capability When this daugherboard is used FB4 can receive DMX signals and trigger content stored on the removable SD memory card as well as adjust the size position rotation color and other parameters The DMX capability provided by this daughterboard also conforms to the RDM standard of DMX The DMX and RDM functionality of the FB4 is accessible through the FB4 menus RDM Pin Signal name 7 GND 6 DMX RX 5 DMX TL 4 I2C SCL 3 I2C SDA 2 I2C INT 1 VCC 3 3V 14 Lasershow Player model FB4 User Manual Status Indicator Lights GREEN Power amp SD card status OFF No Power FLASHING Not used at the moment BLINKING No SD Card SOLID ON SD Card Present YELLOW Network status OFF Network is not detected FLASHING Obtaining IP Address BLINKING IP Address Obtained SOLID ON Connected to QS or BEYOND ORANGE DMX amp Art NET status OFF No active DMX or Art NET signal detected BLINKING DMxX signal detected SOLID ON ArtNET or sACN detected Appendix A FB4 Connections 15 RED Laser Emission status OFF No laser output and no connection to QS or BEYOND SLOW BLINKING QS or BEYOND active Laser output disabled BLINKING QS or BEYOND active and Laser output is enabled SPECIAL CASES ALL 4 LEDs BLINKING
5. of the Pangolin web site to ensure that you are using the very latest version of QuickShow or BEYOND When you start the software it should automatically detect the FB4 and show it on the status bar Within the Projector Settings dialog box use the test patterns to perform initial setup including size scan rate and color adjustments Appendix A FB4 Connections Note that this manual is currently evolving and FB4 includes some features that are not yet documented Power Input Connector The Power connector is located at the top as shown in the picture A stripped and tinned wire must be firmly pressed into to the holes in the connector To release a wire after it has been inserted insert a small pin or the tip of an X ACTO knife trough the small slits adjacent to each hole and then pull on the wire FB4 requires 5 to 30 volts DC at 2 watts If you use the optional DMX or ILDA daughterboards 2 5 watts of power should be budgeted Appendix A FB4 Connections 7 Axis X and Y scanner Outputs 0095 7250000000909 i co os call Axis Output Pin Signal name Voltage level 1 Y Positive 5V to 5V 2 Y Negative 5V to 5V 3 GND 4 GND 5 X Negative 5V to 5V 6 X Positive 5V to 5V 8 Lasershow Player model FB4 User Manual Color Outputs Sete ee Dos ca oe call Color Output Pin Signal Name Voltage level 1 Color 1 Red 0 to 5V 2 Color 2 Green 0 to 5V 3
6. 24V and 24V power wires are connected from these power supplies to the scanner amplifiers As with the power supplies the scanner amplifiers may also be embodied as two separate single axis amplifiers or as one dual axis amplifier as indicated by the light gray box around them The most important part of Figure is the Central Grounding Point This is really the single most important connections concept inside the laser projector and the thing that many people do not initially Appendix B Making The Right Connections 19 understand Basically any component inside the laser projector that requires a ground connection should make a home run to the Central Grounding Point This connection scheme is called a Single Point Grounding Scheme which is also known as a Star Grounding Scheme The Central Grounding Point should be located close to the power supplies Unlike the 24V and 24V which can simply be connected to the scanner amplifiers in a daisy chain fashion as shown the ground connections designated PG in the diagram for Power Ground require more careful consideration and must each make a home run type connection to the Central Grounding Point When an AC ground connection is used green wire on the diagram the easiest thing to do would be to connect it to the Central Grounding Point as well This is because often times this Central Grounding Point is eventuall
7. FB4 User Manual BETA J ED BY ANGOLIN POWER BEYOND 55 Pangolin Laser Systems Copyright 2015 Pangolin Laser Systems Inc All rights reserved Due to our policy of continuous product improvement information in this manual is subject to change without notice Chapter 1 Getting Started Congratulations on selecting the FB4 Laser controller You now own the most powerful and flexible lasershow controller hardware available for use with Pangolin software FB4 gives you the exceptional laser quality and convenience along with the ability to use both QuickShow and BEYOND software Power If you purchased a laser projector that includes FB4 then power is already supplied from inside the projector TE If you are a projector manufacturer incorporating FB4 into a projector you will need to supply power to the FB4 at the connector shown on the left The power required is a single 5 to 30 volts at 2 watts This may be sourced from the same power supply that feeds the scanners or laser diode drivers The power connector is located at the top of the FB4 as shown A stripped and tinned wire must be firmly pressed into each round hole found on the connector With the FB4 in the orientation shown above negative is on the left and positive is on the right The connector will normally have red and black markings to indicate positive and negative respectively 4 FB4 User Manual If you need to
8. Waiting for Firmware Update and No Valid Firmware on the SD Card ALL 4 LEDs SOLID ON Firmware Update in Progress Appendix B The following article appeared in the 2012 edition of The Laserist magazine It is provided below as guide to connecting the FB4 with the other projector components Making the right connections for a perfect image Incorrect connections can lead to distorted images and other problems which are then mistakenly blamed on poor scanner tuning or poor component performance Incorrect connections can also lead to a dangerous projector for example one which will output a beam even when it is not connected This article is intended to be a guide for projector manufacturers on the best way to assemble components to create a laser projector conforming to the ILDA Standard Projector ISP specification When discussing the connections inside a laser projector it is best to conceptually separate these connections into two categories Connections that are related to power supplies referred to as Power Connections and connections that are related to the ILDA DB 25 signals referred to as Signal Connections We will discuss the power connections first Appendix B Making The Right Connections 17 Power Connections Fuse Switch 6 pe TH FROM AC J MAINS SUPPLY 1 24V SUPPLY PG X SCANNER AMP CENTRAL GROUNDING rout 7 N 24V SUPPLY PG Y SCANNER AMP i This
9. al reset is required so that if power is interrupted from the laser projector and then power is restored at some point in the future the laser projector will not automatically start outputting light until some manual intervention takes place such as pressing a button or cycling the position of the key switch The manual reset provides an additional level of safety Consider this scenario a laser projector is operating in a nightclub but at some point the power to the entire night club goes out Then everybody leaves because there is no power Some time later the power comes back on If the laser also comes back on and emits a non moving beam and if this non moving beam is parked onto dark fabric it could start a fire Because of factors such as this the manual reset is required by certain countries The key switch cover interlock and external interlock are all easily 30 FB4 User Manual understood and implemented but the time delay and manual reset provide some difficulty since off the shelf components such as laser diode drivers do not have a time delay or manual reset feature Often times these two features are implemented in the form of an electronic circuit made by the projector manufacturer As a point of interest Pangolin s Professional Audience Safety System PASS incorporates differential receivers for both the color signals and position signals and also implements the time delay and manual reset features thus this mult
10. ctively If you look closely at the power supply you should see the words Line and Neutral or letters L and N that designate which wire goes where Note that there are AC power cords that do not have polarized plugs and these two may become swapped at the point that the projector plugs into the wall However you should still maintain a sense of Line and Neutral throughout the laser projector always connecting the Line terminals of all power supplies to the same preferably brown wire and Neutral terminals to the other preferably blue wire The most important difference between the Line and Neutral connections is that the Line connection is the one that you use when connecting a switch and fuse in line with power supplies With laser projectors whose optical output power is relatively low for example a few hundred milliwatts and projectors that have a plastic enclosure there may only be two AC power wires Line and Neutral and the Ground wire may or may not be used For projectors that have a metal enclosure a Ground wire international color code is green as shown must always be used and connected as shown The Power Connections diagram shows two separate power supplies used to generate 24V and 24V for the scanner amplifiers but this could be embodied as a single power supply that generates both voltages as indicated by the light gray box In either case the
11. dulation basically means that the laser can be fully on or fully off This does not conform to the ISP standard However what s worse is that the TTL modulation inputs float high which means that when the projector is disconnected from the signal source it produces a full power non moving beam On a recent trip I saw this happen on two separate occasions by projectors made by two separate companies And in both cases the non moving full power beam landed on dark fabric which actually caught fire One thing to keep in mind under very bad circumstances laser projectors may present hazards Projectors must be designed to be safe and one of the safety aspects is to prevent light from coming out of them when the projector interlock is opened and when they are not connected TTL modulation should really be avoided but if it is used at the very least a differential receiver should be used which would force the TTL lasers to float low instead of float high Shutter and DB 25 Common Signals The ILDA DB 25 pin 13 provides a signal to control a shutter but its presence is somewhat optional and may depend on local or federal laws where the laser projector is to be used For example for projectors that use solid state lasers it might be argued that between the fast and complete extinction offered by the laser diode driver itself coupled with the fact that the projector interlock actually removes the power from the la
12. ected as the Laser Emission Indicator 22 FB4 User Manual Signal Connections FROM ILDA DB 25 PIN 1 FROM ILDA DB 25 PIN 14 FROM ILDA DB 25 PIN 2 FROM ILDA DB 25 PIN 15 FROM ILDA DB 25 PIN 5 FROM ILDA DB 25 PIN 18 FROM ILDA DB 25 PIN 6 FROM ILDA DB 25 PIN 19 FROM ILDA DB 25 PINT FROM ILDA DB 25 PIN 20 FROM ILDA DB 25 PIN 13 FROM ILDA DB 25 PIN 25 Y SCANNER AMP YPOS Y GND RED MOD SG RED MOD RED LASER DIODE DRIVER GREEN MOD sG GREEN LASER DIODE DRIVER GREEN MOD BLUE MOD BLUE LASER SG DIODE DRIVER BLUE MOD SHUTTER SHUTTER DRIVER SG optional SHUTTER Figure 4 os SCAN FAIL MONITOR optional ONLY CONNECT THIS COLOR IF THE SCAN FAIL MONITOR HAS DIFFERENTIAL INPUTS FOR THE POSITION SIGNAL most do not so these would not be connected in most cases NOTE The SG signal ground inputs are NOT CONNECTED This is Important The PG power ground were connected on the Power Connections diagram and they were connected using a single point grounding scheme The SG are never used AS LONG AS differential inputs are available for the scanner amps as well as the laser diode drivers and shutter drivers If one or more of these do not have a differential input then you will need to make a differential receiver and connect it in such a way that from the standpoint of the ILDA connector it is a fully differential system The diff
13. en times when pin 1 is going from OV to 5V pin 14 will be going from OV to 5V The actual signal level is found by subtracting thus 5V minus 5V 10V This means that the voltage level that the X scanner amp should sense is 10V Note that I used the term often times above The reality is that there is no strict requirement for the X signal to be equal but opposite when compared to the X signal As far as the projector 1s concerned the same X position could be commanded if the X signal goes to 10V and the X signal stays at OV because 10V minus OV 10V Likewise the same result could be generated if the X signal goes to 20V and the X signal goes to 10V because 20V minus 10V 10V This is an important concept because the ISP standard absolutely requires projectors to derive all motion and color signals by taking the difference between two signals No motion or color signal should be assumed to be referenced to ground and within the projector no motion or color signal should be connected to ground With that in mind you will notice that we connect ILDA DB25 pin 1 to the X input on the X scanner amplifier and we connect pin 14 to the X input For the Y axis we connect pin 2 to the Y input of the Y scanner amplifier and we connect pin 15 to the Y input Note that although the scanner amplifiers themselves may have a Signal Ground input labeled SG in the diagram this is NOT con
14. erential receiver connections will need to be made such that SG is considered to be a Virtual Ground so that ground bounce on each element can be subtracted See Differential Receiver diagram for more information Note that the shutter signal is intended to be TTL level so a simple optical isolator may be used as long as the series resistor on the optical isolator is 650 ohms or higher This point may be connected to the central grounding point see notes for details We will now discuss the connections that are related to the ILDA DB 25 signals starting with a discussion of the scanner amplifiers The ILDA DB 25 connector primarily contains signals that control the motion of the beam i e X Y scanning and the color and brightness of the beam i e R G B beam power There are other signals on the DB 25 such as the projector interlock mentioned above a shutter signal and some multi propose user signals but this article only discusses motion and color related signals as well as the shutter and projector interlock Appendix B Making The Right Connections 23 The motion and color related signals are arranged as differential pairs For the purpose of the laser projector the word differential means that the laser projector must derive the actual signal level by taking the difference between two signals i e by subtracting For example ILDA DB 25 pin 1 contains the X signal and pin 14 contains the X signal Oft
15. i purpose projector control board can help to solve some of the most difficult problems in constructing a projector Appendix C FB4 Engineering Drawings FB4 User Manual MAX SCREW LENGTH 0 426 10 81 M3 x 0 5 THREAD 4 PLACES Se ee ee a rarity LILILILS 2 12654 1 811 46 DRAWN R Smith Friday June 26 2015 DIMENSIONS ARE IN INCHES mm MATERIAL TED ANGLE PROJECION Various WEGHT Pangolin Laser Systems Inc l Pangolin Laser Systems FB4 SE 7e FB4SE May2015 A3 33 Appendix C FB4 Engineering Drawings 1 445 36 70 1 315 33 40 0 683 17 35 CONNECTOR DIMENSIONS THE SAME AS STANDARD DB 25 PLUG FEMALE IS ILDA OUT MALE IS ILDA IN 0 787 20 1 339 34 eeo0oo0e0e0ocoooo00osa eceooo0oo0ocooocdso j 0 295 7 50 0 413 10 50 1 161 29 50 1 280 32 50 2 4 40 THREAD THRU ALL DO NOT SCALE DRAWING REVISION Pangolin Laser Systems Inc mE Pangolin Laser Systems FB4 SE ILDA Daughterboard WEIGHT SCALE21 SHEET 10 1 FB4 User Manual MAX SCREW LENGTH 0 946 24 03 a i g Le 1 157 29 38 1 929 49 Be SECOND SHEET FOR HOLE PATTERN DETAI Pangolin Laser Systems Inc lt a Pangolin Laser Systems DIMENSIONS ARE IN INCHES from FB4 SE DMX Daughterboard Crau ee Various aa FB4SE_DMX AS 35 Appendix C FB4 Engineering D
16. l scanner amplifiers to have a differential input however some very low cost scanner amplifiers may not Since the ISP standard absolutely requires all motion and color signals to be implemented as differential pairs within the projector this means that if you have scanner amplifiers or laser diode drivers that do not have differential inputs you will need to implement the differential receiver as a separate circuit Appendix B Making The Right Connections 25 One easy way to do this is with a difference amplifier as shown in Figure 5 below A single op amp along with four resistors can be used to receive the differential signal from the X Y R G or B signal and generate a single ended signal which is then connected to the scanner amplifier or laser diode driver Note that this circuit is drawn and implemented in such a way that it has two inputs and also two outputs One of the outputs is the single ended signal that drives the component but the other output is a ground reference This needs to be connected to the Signal ground input terminal of the scanner amplifier or laser diode driver The connection is made this way in lieu of connecting this to any other ground so that Ground Bounce can be detected and rejected by this circuit Also note that this diagram does not show the pin numbers of the op amp and also omits the op amp power supply connections for clarity The op amp must receive power from a po
17. mented as two spring loaded switches connected in series with the general projector interlock loop described above Two switches are used instead of one to provide redundancy in this safety feature Some governments may require an additional connector to be placed on the projector called an external interlock connector Electrically this connector only needs to have two pins and this is connected in series with the general projector interlock loop One example of how this connector might be used is when the laser projector is only supposed to project a certain effect such as a cone shape at only a certain time such as when a performer is in just the right place that the cone will surround them The external interlock can be connected to a pressure pad that is only active when the performer is standing in place A time delay is used so that when the projector is turned on it won t start emitting laser light right away This is in place so that the laser operator can turn on the laser projector and then advise others who might be in the room that the laser is coming on The time delay allows the laser operator and others to take their place to avoid accidental exposure to the laser Of course this assumes that exposure would be harmful in the first place which isn t always the case Nevertheless the US and other countries require a time delay to be a part of the projector The time delay is normally set for 20 to 30 seconds A manu
18. n spacers under any laser to provide a physical and electrical separation between the laser and the base plate The metal case of scanners and thus the X Y mount of the scanners are another notorious place to generate a phantom ground connection and this should be isolated where possible Ofher Projector Parts That May Be Necessary In addition to the fundamental components described above which are certainly a part of most laser projectors additional components might also be needed or desired For example the United States and certain other countries require additional safety features for laser projectors including laser emission indicator key switch cover interlock external interlock time delay and a manual reset The laser emission indicator was described above The other elements are described below Appendix B Making The Right Connections 29 A key switch is required for laser projectors because under the wrong circumstances laser projectors could be hazardous and should be used only by trained laser operators To prevent untrained personnel from operating the laser a key switch is used The key should only be given to the trained laser operator If the projector covers could be easily opened or removed by a user or operator the laser projector is required to have a cover interlock which will prevent the lasers from operating when the cover is opened This cover interlock 1s ideally imple
19. nd connected to the interlock lines This Appendix B Making The Right Connections 21 provides an easy mechanism for laser operators to prevent laser output when needed The interlock portion of the ISP standard is intended to help prevent light from coming out of the projector if the projector is mistakenly connected to a non laser signal source Although it is shown in the diagram as a relay which applies or removes power from reaching the laser diode drivers the interlock system may be implemented in other ways including as an additional shutter within the projector The ISP specification allows for voltages up to 25 volts and currents up to around 160 milliamps to exist on the DB 25 pins Thus the projector interlock must be facilitated in such a way that these values are not exceeded However I recommend that you try to implement an interlock that uses far less voltage and current for example 5 volts and 5 milliamps This could be done using an electronic relay instead of an electro mechanical relay The interlock signals may also be implemented using other methods that might provide an increased level of safety for example by outputting a small sine wave signal on pin 4 and comparing it to the voltage received on pin 17 It is also a good idea to put an LED or some other indicator somewhere within the interlock system so that the user can see when the interlock is enabled or disabled In the diagram we show an LED conn
20. nected The reason this is not connected is because if it were this would destroy the single point grounding scheme that was established and discussed above in the Power Connections section of this article Basically since the scanner amplifiers have differential inputs it is only those differential inputs that are used for ILDA DB 25 signals The only ground connection is made from the Power Ground to the Central Grounding Point already mentioned above If a scan fail interlock were used it would be connected to the X POSITION and Y POSITION signal from the scanner amplifier But there is something tricky to watch out for You should consult the 24 FB4 User Manual manufacturer of the scan fail interlock to determine whether or not the scan fail interlock itself has a differential position input If the scan fail monitor does not have a differential position input you should NOT connect the Signal ground or Position ground from the scanner amplifier to the scan fail monitor Doing so would again destroy the single point grounding scheme The scan fail monitor already has a ground connection to the Central Grounding Point established on the Power Connections diagram You should only connect the scan fail monitor to the scanner amplifier s ground connection if the scan fail monitor itself has differential inputs Pangolin s PASS safety system does have a differential position input but most others do not
21. plies and laser diode drivers or may each operate on a separate power supply and driver The diagram shows a single power supply operating three solid state laser diode drivers but there may be only a single laser or in fact the laser may be an ion laser with completely separate power supply Nevertheless the diagram shows conceptually what must be accomplished for best results If the laser power supply is small enough to fit within the projector then the Power Ground from the power supply as well as the Power Ground from the laser diode driver should each be routed to the Central Grounding Point If an ion laser were used then a PCAOM would be used to modulate the beam In this case you would connect the Power Supply of the PCAOM driver as well as the PCAOM driver each to the Central Grounding Point using a home run type connection Projector Interlock required by the ISP standard Figure 1 also shows a relay placed in series with the laser power supplies This relay is intended to facilitate the interlock feature of the ILDA Standard Projector When connected as shown the laser diode drivers and optionally the shutter driver will only receive power when the interlock loop is closed The interlock facilitates an additional layer of safety for laser projectors and is required by the ISP standard It is also possible for users to place a Red Mushroom Switch in series with the ILDA cable a
22. point may go to the AC ground or it may go to ILDA DB 25 pin 25 See notes for details L N LASER SUPPLY G Note The relay is for conceptual understanding only and the interlock may be implemented using a different scheme SCAN FAIL MONITOR PG optional RED LASER DIODE DRIVER COM GREEN LASER DIODE DRIVER The interlock voltage may not exceed 25 volts and interlock current may not exceed 160mA A lower voltage and current are preferred such as 5V and 5mA BLUE LASER DIODE DRIVER FROM ILDA DB 25 PIN 4 INTERLOCK FROM ILDA DB 25 PIN 17 SHUTTER DRIVER optional L designates the AC Line connection N designates the AC Neutral connection G designates the AC Ground connection PG designates the DC Power Ground connection Figure 1 general manner in which power connections should be made between the various components 18 FB4 User Manual We will discuss the connections for the scanner power supplies first because they are at the top of the diagram and also because once that foundation is laid the other power connections can be easily understood Power enters the projector from the AC Mains Supply An integrated switch and fuse assembly is often used as shown The international color standard specifies the brown wire as the LINE or Hot lead and the blue wire as the NEUTRAL lead These are connected to the power supply LINE and NEUTRAL connections respe
23. rawings HOLES M3 x 0 5 THREAD 0 083 2 10 0 780 19 80 0 102 2 60 NAME DATE DRAWN R Smith Friday June 24 2015 DIMENSIONS ARE IN INCHES fmm MATERIAL WEGHT DO NOT SCALE DRAWING REVISON Pangolin Laser Systems Inc THLE Pangolin Laser Systems FB4 SE DMX Daughterboard aiii FB4SE_DMX A3 SCALE SHEET 20F 2
24. remove the power wires from the FB4 each wire may be released by inserting a very small pin or tip of an X ACTO knife into the small slots adjacent to each hole Connecting to a Projector The FB4 has Axis output and Color output signals having a voltage level that is compatible with the ILDA ISP standard If your FB4 is not already installed on your projector please refer to the Appendix A for the pinouts Turning it on When power is applied to the FB4 a green light will illuminate Pressing down on the knob will wake up the FB4 for configurations FB4 is configured at the factory to be usable with Pangolin s QuickShow or BEYOND software However other operational modes are possible including DMX OSC as well as the ability to access internal test patterns when they are stored on the removable SD memory card Initial Operation Connect FB4 to your computer or local area network using a standard CAT5 or CAT6 Ethernet cable When FB4 detects a network the yellow light on FB4 should flash indicating network activity From the factory the FB4 is initially configured to use an automatic IP address but FB4 may also be assigned to a manual IP address using the menus accessed using the dial on the front Chapter 1 Getting Started 5 Software Sefup Download and install QuickShow or BEYOND which can be found on installation media included with FB4 or included with the projector You may also check the Support section
25. ser diode drivers a shutter is therefore not needed But for ion lasers even those modulated by a PCAOM a shutter would still be desired In general it can be said that the shutter Appendix B Making The Right Connections 27 offers an additional layer of safety for the laser projector and thus it is a desirable thing to have Unlike the motion control signals and color control signals the shutter signal is not considered to be an analog signal It is TTL in nature and thus the shutter is either fully opened or fully closed The shutter is fully opened when pin 13 is roughly 5V when compared to pin 25 Also the shutter signal is not a true differential signal since noise immunity is not really needed due to the fact that it is TTL in nature However for the purpose of projector connections it should be considered to be a differential signal whose counterpart is pin 25 ILDA DB25 pin 25 is considered to be the Common signal of the ILDA connector However this Common signal is not necessarily a Ground signal since under many circumstances this signal is not connected to Ground within the projector Since the shutter signal is TTL in nature and referenced to DB 25 pin 25 one good way to receive this signal is using an optical isolator The optical isolator will receive the TTL level signal between pin 13 and pin 25 and allow isolation of these signals from the rest of the projector components DB
26. tput As a shutter actuator we recommend the VRAD 1510 or VRAD 506 actuator from the ScannerMAX division of Pangolin Appendix A FB4 Connections 11 X Y Scanner Position feedback input Connector FB4 can optionally monitor the X Y scanner s position signals and provide additional safety related functions These functions are selectable and adjustable in the FB4 menus When implemented the scanner s position signals may be fed into the FB4 as described below If this signal is not implemented the connector should be left unplugged Feedback Pin Signal name Voltage level 1 Y 10 to 10 2 Y 10 to 10 3 X 10 to 10 4 X 10 to 10 12 Lasershow Player model FB4 User Manual FB4 ILDA Daughferboard Connector FB4 may be connected to an optional daughterboard which provides ILDA Input and ILDA Through capability When this daugherboard is used FB4 can direct the ILDA Input through FB4 circuitry for signal modification before forwarding those signals to the Axis and Color outputs on the FB4 The signal modification includes the ability to adjust the color level and color shift as well as the orientation of the ILDA input All of these ILDA input signal modifications are accessible through the FB4 menus ISP Input Pin Signal name 1 GND 2 I2C SDA 3 I2C SCL 4 I2C INT 5 VCC 3 3V 6 BIN j G IN 8 RIN 9 Y IN 10 X IN 11 VSS 5 8V 12 VDD 5 8V Appendix A FB4 Connections 13 FB4 DMX Daughterboard
27. wer supply that is capable of feeding it a minimum of 5V and SV 10K 1 10K 1 FROM ILDA SIGNAL TO SIGNAL GROUND TERMINAL OF INPUT DO NOT connect to power ground FROM ILDA SIGNAL TO SINGLE ENDED INPUT 10K 1 10K 1 NOTES OP AMP may be any type that is stable at unity gain TL084 is a popular choice for a single package with four op amps The OP AMP also has power terminals which are not shown in this diagram The power terminals must be fed from split supplies with a voltage level of at least 5V and 5V Connecting the power terminals of the op amp to a positive voltage and ground only with no negative supply will not provide sufficient head room against negative going common mode signals which will certainly exist Figure 5 Difference Amplifier TTL Versus Analog Color Modulation Avoiding Fires The ISP standard requires the color signals to respond in an analog fashion such that OV does not produce any light from the projector 2 5V produces around half the nominal laser power and 5V produces the full laser power The ISP standard also assumes that if the laser 26 FB4 User Manual projector is disconnected from the signal source there should be NO light coming out of the laser projector because there would be no difference between the differential color signals I have recently seen several projectors that used laser diode drivers that used TTL modulation inputs rather than analog modulation inputs TTL mo
28. y through phantom ground connections connected to the optical plate within the projector If phantom ground connections can be completely prevented then the AC ground connection could simply be connected to the projector chassis but not to the central grounding point This provides the best performance but requires the most careful projector design and layout and close attention to detail in terms of avoiding phantom ground connections When an AC ground is not used or when the AC ground is connected only to the projector chassis and there are absolutely no phantom ground connections then ILDA DB 25 pin 25 MUST be connected to the Central Grounding Point Note that the ILDA DB 25 pin 25 should NOT be connected to the Central Grounding Point if the AC ground connection is already connected there otherwise there will be a ground loop formed external to the projector which is undesirable 20 FB4 User Manual Power Connections For the Laser In addition to showing the connections for the scanner power supply Figure 1 also shows the connections for the lasers However unlike the connections for the scanner amplifiers the connections shown for the lasers are intended to be more conceptual than literal The reason is because although scanner amplifiers are highly standardized and generally all require the same kind of power supplies and connections the lasers themselves may have integrated AC power sup
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