DPSI LCD Operating Instructions Version 1.0. Contents

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2 Contents 1. Preface Characteristics Display- and Control-Elements Dimensions Assembly Push-Buttons and LED-Indicators Functions of Buttons Functions of LEDs Readouts of the LC-Display Readout after Power-On Readout of Receiver Information Readout of Receiver Errors Readout of the Current Supply Readout of Current Supply Errors Resetting Stored Values Programming / Setup Programming Options Operating Mode Switching Positions Failsafe Switching Positions Master/Slave Units Battery Type Buzzer On/Off Language Factory Settings Exit / Return Technical Data of DPSI LCD Warranty Page 2 of 32

3 1. Preface With the DPSI LCD you purchased a high grade, modern and secure product. We appreciate your trust! Long lasting experience for years in development and manufacturing of electronically systems as well as the knowledge of the world s best model airplane pilots has influenced the development. All products are developed by experienced engineers and manufactured at EMCOTEC GmbH in Germany on our own production line. Extensive optically and electronically end tests for every system, which leaves our house, assure that you, our customer acquire an absolute reliable product, which considerably increases the reliability of your valuable RC-Model. Of course, the DPSI LCD (just like all products from EMCOTEC) not only has been tested extensively in the laboratory, but also went through intensive flight-testing. Like done in the automobile industry an FMEA (Failure Mode and Effect Analysis) reduces the possibility of damage and malfunction on operating errors to a minimum. Hint: We kindly ask you to read these operating instructions carefully and observe the installation hints. Thus, errors can be avoided in advance. We are all ears for your wishes and questions. Challenge us! Bobingen, January 2008 The Staff of EMCOTEC GmbH Page 3 of 32

4 2. Characteristics The DPSI LCD serves as an optional extension to DPSI products, which can control a LC-Display: DPSI receiver switch (e.g. TWIN Mini stand alone) DPSI dual current supply (e.g. entire TWIN Mini) Additional future products It displays (dependent on DPSI base system) important information in plain text which is gathered during operation. These is information about Signal quality of the receiver Supply voltage of receiver (batteries) Withdrawn capacities from batteries Current flow in receiver equipment and much more. Due to the integrated LEDs system states can be realized immediately without first reading the text in the display. Critical situations are indicated by quickly blinking LEDs. Root cause can than be read from the display. Three push buttons serve as display selectors or serve for setting up options. It was never easier to display different data or set up diverse options. The optimized handling concept was evaluated in practical studies and is therefore nearly self explaining. The DPSI LCD can also serve as On/Off switch for certain products of the EMCOTEC DPSI program, thereby eliminating the need for the regular switch actuator. The DPSI LCD is mounted into the model just like a cockpit instrument. In this way, a functional handling and display unit results, upgrading the overall picture of the model by these small dimensions and a shapely housing. Page 4 of 32

5 There is a 6-pin connector in the center of the back side of the DPSI LCD for a connection cable. The connection cable (4-pin or 6-pin depending on DPSI base system) is simply connected to the 6-pin connector. Reverse polarity is impossible. The other side of the cable is connected to the corresponding DPSI system (e.g. DPSI TWIN Mini). Here, polarity must be observed. The red wire is positive and must be congruent with the corresponding markings (+) at the base system (see picture). Page 5 of 32

6 3. Display- and Control-Elements Page 6 of 32

7 4. Dimensions Page 7 of 32

8 5. Assembly The DPSI LCD can be used as a cockpit instrument. Cut a squared hole of 57mm edge length and 6mm inner radii into the cockpit (or similar mounting plate). The DPSI LCD is then to be fed through the hole from back to front (!) and secured using 4 regular M3 screws. The screws are self cutting and find sufficient material in the plastic of the mounting latches. Screw distance is 60mm. Drilling template 1:1 scale: Page 8 of 32

9 6. Push-Buttons and LED-Indicators 6.1. Functions of Buttons Depending on the used or connected DPSI system, the three push buttons of the DPSI LCD can be used as On/Off switch (e.g. for the DPSI TWIN Mini including adapted dual power supply). Turning on is accomplished by pushing the SET -button. Turning off is done by pushing the DOWN ( ) and UP ( ) buttons simultaneously (!) for about 2 seconds. When turned on, the buttons work for conforming entries ( SET ) or for selections of information from the display DOWN ( ) and UP ( ). By pushing the UP - or DOWN -buttons multiple times, the menu (one frame with text) advances. There are some particular features in the layout of the buttons: 1.) If the SET -button is permanently pushed for about 5 seconds during turning the power on, the system changes into programming mode (setup). Here, several setups for the system can be accomplished. 2.) If during operation first the UP -button ( ) and additionally the SET -button is pushed, memorized information can be deleted (reset menu). 3.) If the SET -button is pushed during operation, all LEDs will be turned off. After pushing this button again, the LEDs are turned back on again. The ultra bright LEDs are very well recognizable even in bright day light. If the ambient light is dim, the LEDs glare which cause difficulties to read the display. Therefore, the LEDs can be turned off. Page 9 of 32

10 Function Turning DPSI on * Turning DPSI off * Turning LEDs off Turning LEDs on Start setup Reset menu Buttons Push SET momentarily Push + for 2 seconds simultaneously Push SET momentarily during operation Push SET momentarily during operation Push SET during power on for 5 sec. Push, then press SET simultaneously * Not possible with all systems! 6.2. Functions of LEDs After turning the DPSI LCD on, all eight LEDs are turned on temporarily from left to right in order to test their functioning. The LEDs have different meanings and therefore are assigned distinctive groups. Depending on the connected system, the LEDs have an assigned function or not. If e.g. there is no receiver switching unit installed in the system, the corresponding LEDs (green and blue) are not used. If no power supply is integrated into the system, the red and yellow LEDs are not used. Assignment of the LEDs (top view onto display) Battery 1 Receiver 1 Battery 2 Receiver 2 Red Yellow Green Blue Red Yellow Green Blue The red and yellow LEDs are assigned to battery faults The green and blue LEDs are assigned to receiver (errors) Red means: Yellow means: Green means: Blue means: Error (Danger) Warning All ok Additional information (which receiver is active) Page 10 of 32

11 Indicating battery errors (DPSI battery switch) Red LED Steadily lit if charging state of corresponding battery is low for more than 10 minutes. There is low voltage (=>urgently charge battery). Quick blinking, if the battery voltage drops below 5.0 volts. Fast blinking therefore indicates e.g. loose contacts or a totally emptied battery. The error indication is active until power off. Yellow LED Steadily lit if the battery is discharged down to about 60-70% (no low voltage yet). The error indication is active until power off. Indicating receiver errors (DPSI receiver switch) Green LED As long as the corresponding receiver provides a valid servo signal to the failsafe input of the DPSI, the LED is steadily lit. Green therefore stands for: receiver ok. If an erroneous or a defined failsafe signal or no signal at all is recognized at the failsafe input, the LED is turned off. If the receiving quality drops and the receiver shows several malfunctions, the green LED flickers. The LED therefore is an indicator for decreasing receiving quality (=> range test). Blue LED The blue LED always indicates which receiver is active and which receiver provides the connected servos connected to the DPSI system control signals (left LED = RX1 active, right LED = RX2 active). Page 11 of 32

12 Quick blinking of both blue LEDs indicates failsafe issues of both receivers simultaneously! This state is critical also, because both receivers were malfunctioning during operation at least for a short time! Summary: LED Status Red LED on Red LED blinks Yellow LED on Yellow LED off Green LED on Green LED off Blue LED on Blue LEDs blinks Indication Low voltage (battery almost discharged) Battery fault (malfunction) or voltage < 5.0 V Low battery capacity => charge battery Battery voltage ok Receiver signal ok No receiver signal, receiver defective or a defined failsafe signal of the receiver This receiver provides actually the signals for servos connected to the DPSI Both receivers malfunctioned during operation simultaneously Hint: Fast blinking of a LED indicates a critical situation which can lead to a breakdown of the total system! Hint: In order not to be dazzled by the LEDs when reading the LC-Display, the LEDs can be turned off and back on by pushing the SET -button momentarily. Page 12 of 32

13 7. Readouts of the LC-Display The LC-Display indicates all information in plain text using 3 lines, 12 characters each. The display varies, depending on which DPSI system the DPSI LCD is connected to. Display in respect to receivers (e.g. receiver switch): - The currently active receiver - How often the system switched receivers - The receiving quality - The servo position of the failsafe channel - Indication of the operating mode (Failsafe or Master/Slave => Teacher/Student) - Display of current receiver voltage - Flight-time (operating time in minutes) Display in respect to power supply (e.g. battery switch): - Actual voltage battery 1 and battery 2 - Maximum voltage battery 1 and battery 2 - Minimum voltage battery 1 and battery 2 - Display of current receiver voltage - Actual current battery 1 and battery 2 - Average current battery 1 and battery 2 - Maximum current battery 1 and battery 2 - Withdrawn capacity of battery 1 and battery 2 - Flight-time (operating time in minutes) Withdrawn capacity (in milli-ampere-hours mah) and operating time can be reset on users demand (=> reset menu). Hint: The DPSI LCD displays two times: a total time (that is the time, the system stores every 30 seconds and which can be reset by the user) and the time of the actual turn on cycle (A) which is automatically set to zero at power off. Page 13 of 32

14 7.1. Readout after Power-On Optional Display: When turning the DPSI LCD on (or connecting it) the starting frame is displayed for about 2 seconds. Here one can see which DPSI system is supported (here: DPSI TWIN Mini). Now one can see how the system is programmed (Failsafe or Master/Slave mode). At the same time, the corresponding switching values (= servo positions) are displayed in ms or %. For additional 4 seconds, the current servo positions of both failsafe channels are displayed (in ms or in %). This is for quick control. In case the system is in Master/Slave mode it will be optionally displayed. The numbers indicate the threshold where switching between Master (Teacher) and Slave (Student) occurs. Here too, the current servo positions of both failsafe channels are displayed for additional 4 seconds. Hint: Depending on the DPSI system the DPSI LCD is connected to, information displayed varies after power on. Frames are only exemplarily described. Since depicted information is self-explanatory, differences in other systems are not further described. Page 14 of 32

15 7.2. Readout of Receiver Information The system switches to regular display mode after displaying the start information (first 3 frames). Different screen information can be selected by the and buttons. Receiver switch operating mode Failsafe The main menu of the receiver switch shows information about the connected receivers. The black arrow in the top most line indicates the currently active receiver (here: RX2 ). The next lines means: 1x switched from receiver 1 to receiver 2. Receiving quality of receiver 1 is 97%. Page 15 of 32

16 The last line depicts information for receiver 2: 0x switched from receiver 2 to receiver 1, its receiving quality is 100%. Hint: The signal quality refers to the percental ratio of correctly evaluated servo pulses to erroneous servo pulses at the failsafe input. This means, all good and all bad (e.g. failsafe) servo pulses are recorded and the ratio is built. As a matter of fact, a receiver s receiving quality can be less than 100% but no switching occurs. That s due to the fact that only qualified errors can cause switching and not just only a single (failsafe)-signal. This is not critical. Even so, the quality can be 100%, but switching took place. Because time is considered in the calculation, a single error does not count in long lasting operation. Hint: If the receiving quality reaches less than 90%, this is considered critical and one should take corrective actions like a different antenna layout or other counter measures. Here, receiver 1 is active. 12 transfers occurred from RX1 to RX2 and 11 transfers from RX2 to RX1. The quality of receiver 1 is 99%, receiver 2 has 89%. Receiver switch in operating mode Master/Slave (=Teacher/Student) While the system (DPSI TWIN Mini) is operated in Teacher/Student mode, the display indicates who s in control of the model and how long the Teacher (Master) or Student (Slave) was in control during this power on cycle. Page 16 of 32

17 Additional indications of the receiver switch: Here, the Slave (=Student) is in control. The servo position on failsafe input of the main receiver (!) is -120%. The student is in control since 00:01:12 h:m:s By pushing the and buttons, other displays are possible. Thus, one can change to a frame which shows the current servo positions at the failsafe inputs of the receiver switch (DPSI TWIN Mini), displayed in % or ms. Now, simple monitoring of the failsafe setup is possible. Current servo position at both failsafe inputs RX1 and RX2. Depiction in %-values (like in transmitter) or in ms (units are programmable.) Page 17 of 32

18 Output voltage / supply voltage of DPSI TWIN Mini. At the same time, this is the voltage, the receiver and eventually the servos are supplied with. The actual and minimum value (of this power on cycle) is displayed. Depiction of operating time. The line A =Actual indicates the time since last power on in the h:m:s format. The last line indicates the operating time since last reset. This time can be reset. Memorizing occurs every 30 seconds, the maximum error can therefore be 30 seconds 7.3. Readout of Receiver Errors If a receiver totally malfunctions for at least 5 seconds or doesn t provide a reasonable servo signal, the regular frame alternates with a corresponding error message frame every 2 seconds. The error message display does not show up if the receiver outputs a defined failsafe signal (e.g. PCM or FASST / IFS). A defined signal does not point to a receiver malfunction, but rather to a bad radio connection. The error indication exists until power off and serves as control if a receiver was totally malfunctioning during operation.. Page 18 of 32

19 Hint: If one of the or buttons is pushed during error display, output is inhibited for 10 seconds and the regular display menu can be accessed Readout of the Current Supply Depending on which DPSI base system the DPSI LCD is connected to, additional frames are released. The DPSI TWIN Mini, configured as plain receiver switch, only implements frames for receiver information. The DPSI TWIN Mini with mounted dual power supply (battery switch) owns additional displaying options, which refer to batteries and the power consumption of the system. This display shows the actual ( ACT ) voltage of both connected batteries. Here, the maximum voltage ( MAX ) of both batteries is displayed for the current power on cycle. The minimum voltage ( MIN ) of both batteries in current power on cycle is displayed. Page 19 of 32

20 Supply voltage of the DPSI TWIN Mini and therefore of the connected receiver and servos. The actual value and the minimum value during this power-on cycle are displayed. Display of actual ( ACT ) current flow from battery 1 and / or battery 2. If the current is less than 0.05A, <0.05A is displayed. Display of maximum ( MAX ) current, which is withdrawn from battery 1 and / or battery 2 in this power-on cycle. If the current is higher than 19A, > 19.00A is displayed. Display of average current flow, which was withdrawn from battery 1 and / or battery 2 in this power on cycle. Display of capacity withdrawn from battery 1 and / or battery 2 in milli-ampere-hours. The value is being accumulated and only reset to zero after deletion of the data. If exceeding 9999mAh, the value >9999mAh will be displayed. Here, the sum of the values of both batteries is displayed. First, actual total current and secondly maximum current from both batteries. Here, the sum of capacity values of both batteries is displayed. First, the withdrawn capacity (since last reset) and second the average current from both batteries. If higher than 19.99Ah the value >19.99Ah is displayed. Page 20 of 32

21 7.5. Readout of Current Supply Errors When ever a battery malfunctions, this is displayed in plain text. Even an overload of the batteries or dual current supply is displayed. An overload exists, if the maximum allowable continuous current is exceeded for at least 10 seconds. If a battery is discharged down to about 60-70%, it is due to recharge which is indicated by a corresponding menu. In case of both batteries to be charged, this too is displayed. In case of a loose contact or a voltage less than 5.0 volts, an error is indicated. This error leads to blinking of the corresponding red LED. It is displayed if the DPSI system is overloaded. An overload exists, if the maximum allowable current according to the data sheet is exceeded for about 10 seconds. Page 21 of 32

22 8. Resetting Stored Values The values for operating time (flight-time in minutes) and withdrawn capacity (in mah) can be reset. This is usually done after charging the batteries. Because the batteries are normally fully charged after charging, the DPSI system counts withdrawn capacity starting from 0 after reset. Hint: The capacity can only be reset if the DPSI LCD is connected to a DPSI system which supports measurement of capacity (e.g. dual power supply). The DPSI TWIN Mini without a dual power supply unit (just as receiver switch) does not support this function (only reset of the flight-time)! In order to reset saved values during operation push the and the SET -button simultaneously. button When activating the reset menu deleting data must be confirmed. The reset menu exits without changing anything if no buttons were pushed after 10 seconds. Deletion of values is confirmed with OKAY! and the reset menu is automatically exited. Page 22 of 32

23 9. Programming / Setup Different options can be easily programmed for the DPSI systems. Programming refers to e.g. desired operating mode (Failsafe or Master/Slave), settings for failsafe switching, displaying format of servo pulses (ms or %) and battery types to be used (NiMH, LiFePo, LiPo). Programming options vary depending on the DPSI base system. Therefore, only the principal concept of programming is described. Settings for options or their influences can be found in the operating instructions of the corresponding DPSI base system. In order to access the programming options, the SET button must be pressed for about 5 seconds during powering the DPSI system on. The programming menu is designed such that the desired programming option is selected by pushing the -button and the -button. The arrow ( ) points to the currently active line. Pushing the SET - button starts the option. By pressing the arrow button several times, the start is reached again, i.e. reaching the first frame. Page 23 of 32

24 9.1. Programming Options The operating mode configures a receiver switch (e.g. DPSI TWIN Mini) as plain switch or if Master/Slave (Teacher/Student) operation is desired (see 9.2.). The switching position defines the switching values (in % of the servo track) where receiver switching should take place (see 9.3.). Units define the display of the FS servo position in ms or % (see 9.5.). The battery type defines the thresholds for correct low voltage detection. This option is depending on the system being used (see 9.6.). The buzzer (if the corresponding DPSI system is equipped with a buzzer) can be switched on or off for acoustical error indication (see 9.7.). Language for displaying texts is selectable for German or English. The setting is active immediately, i.e. text appear immediately in the selected language (see 9.8.). Factory setting sets the system back to original values. If uncertain of errors during programming, this might be helpful (see 9.9.). Programming mode is exited with Exit/Return. The system resets and restarts with the newly programmed settings (see 9.10.). If the End/Return option is not confirmed, the menu starts from the beginning. Page 24 of 32

25 9.2. Operating Mode An option is programmable or not depending on the DPSI system used. Confirming operating mode using the SET -button brings you into the submenu for setup. At the beginning, the active line is always RETURN. If the SET -button is pushed again, the menu is exited. The asterisk * after FAILSAFE indicates an active option. Using selects the corresponding line (here Master/Slave ) and SET confirms the programming. Now, the asterisk * appears at option Master/Slave. By selecting RETURN and confirming using the SET -button exits the menu. Page 25 of 32

26 9.3. Switching Positions Failsafe The option Switching Position defines which signals at the failsafe input of the DPSI TWIN Mini switches from one receiver to the other. If the option FAILSAFE is programmed, PASS and FAIL are displayed. In case Master/Slave was activated, MAST. and Slave are displayed instead. When activating this option, both current saved values are displayed (here +120% and -120%). If the value of PASS is to be changed, the line is to be selected and confirmed using SET. Asterisk * and the current servo position at the failsafe channel in % is displayed now. As soon as the desired value is reached, it is confirmed by pressing SET. The asterisk disappears. The same is conducted for FAIL and the menu is exited. You find additional information in the operating instructions for the DPSI TWIN Mini. Page 26 of 32

27 9.4. Switching Positions Master/Slave For programming Master/Slave (Teacher/Student) operation, thresholds are to be programmed as well where receiver switching has to occur. Programming works just like for failsafe switching. Hint: Master/Slave setting can be used without explicit Teacher/Student operation. This means: the main receiver RX1 (Master) is always active until it e.g. changes into the failsafe state due to radio disturbance. The DPSI TWIN then switches to the backup receiver RX2 (Slave). As soon as the main receiver RX1 works flawlessly again and providing regular servo pulses, the DPSI TWIN switches automatically back! Evaluation of RX2 failsafe signals does not take place. Therefore, non failsafe capable receivers can be used. Page 27 of 32

28 9.5. Units Programming of units is conducted identical to all other settings. When programming switching positions, the units are always specified in %. In this case this setting therefore refers only to the display of the servo positions during normal operation Battery Type In order to guarantee correct low voltage indication (depending on the base system), the battery type must be programmed. Because different batteries have different voltages, this programming is mandatory. Page 28 of 32

29 The corresponding battery type is selected with the arrow buttons and the selection is confirmed by SET. Depending on the base system, selectable battery types vary. The principal of programming keeps always the same Buzzer On/Off This option is not available all the time. See operating instructions of the corresponding DPSI base system Language Using this option selects the language of the LC-Display. Changing the language setting is immediately active. Page 29 of 32

30 9.9. Factory Settings If a mistake occurred during programming or in case of uncertainty of an adjustment of the system, the base system can be reset to its delivery state with this option Exit / Return Using this option exits the programming mode and the system conducts a reset. Prior changes are then active. Hint: Over time, setup or programming options change. Because the system is self explaining, programming of new options should be of no problems. 10. Technical Data of DPSI LCD Supply Voltage Current Consumption (turned on) CE-Test Environmental Conditions (Operating) Allowable Temperature Range Dimensions (Width x Height x Depth) Screw Diameter for Mounting Hole Spacing for Mounting Hole Cutting for Housing Weight Housing Material Warranty 5.0V (from DPSI-System) Approx. 5-30mA (depending on activated LEDs) According to 2004/108/EC -10 C C -25 C C 67mm x 67mm x 11.3mm 4x M3 screws 60mm 57mm x 57mm with 6mm Radii in corners Approx. 35g ABS 24 month Page 30 of 32

31 11. Warranty EMCOTEC GmbH shall issue a 24-month warranty on the DPSI LCD. The guarantee period shall begin with delivery of the equipment by the retailer and shall be not extended by any warranty repair or warranty replacement. During the period of guarantee, the warranty shall cover the repair or replacement of any proven manufacturing or material defects at no charge. There shall be no specific entitlement to repair work. In case of a warranty claim, the manufacturer shall reserve the right to exchange the equipment for a product of equal value if repair of the item is not feasible for economic reasons. There shall be no assumption of liability for consequential damages that are brought about by a proven defect during operation of the DPSI LCD. There shall be no extended claims for damages. All transportation, packaging and travel expenses shall be borne by the purchaser. No liability shall be assumed for any damages during transport. If repair is needed, the equipment must be sent to the appropriate service center of the respective country or directly to EMCOTEC GmbH. The guarantee shall only be valid when the following conditions are met: The guarantee document (original invoice) must include the delivery date, the company stamp, the serial number and signature of the retailer. No intervention in the equipment may have been undertaken. It must have been operated in accordance with our operating instructions. Only the power sources and other accessory devices and components that were recommended by us may have been used. The guarantee document, the original invoice and other pertinent Information regarding the malfunction (a Short description of the defect) must be included with the transmittal. The equipment must still be the property of the initial purchaser. If equipment is sent in that later proves to be functional following an initial inspection, we shall impose a flat processing fee of 15. In all other respects, the general business terms and conditions of EMCOTEC embedded Controller technologies GmbH shall apply for any items not listed. (P) Version 1.0 from February, 14th 2008 Robert Hussmann Page 31 of 32

32 Legal information: Trademarks: The following names are registered trademarks: - EMCOTEC - DPSI - Dual Power Servo Interface - DPSI RV Other product names mentioned in this manual may also be trademarks or registered trademarks of their respective owners. Copyright information: This manual is copyrighted by EMCOTEC GmbH. All rights reserved. This document may not be copied either entirely or in part, nor may it be transferred to any type of medium or translated into any other language without the express written approval of EMCOTEC GmbH. Manual Note: EMCOTEC GmbH reserves the right make changes to this manual and to equipment described herein without notice. Considerable effort has been made to ensure that this manual is free of errors and omissions. We shall not assume responsibility or liability for any errors that may be contained in this manual nor for any incidental, concrete or consequential damage that may arise from the provision of this manual, or the use of this manual in operating the equipment, or in connection with the performance of the equipment when so operated. Page 32 of 32