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Surface Capacitive flat touchscreens Surface Capacitive 5020RSU dual controller Surface Capacitive touchmonitors Surface Capacitive technology |
Surface Capacitive 5020RSU Dual Serial/USB Controller
ElectricalSupply Voltage and CurrentThe CTR-502000-SC-RSU-0xR can be powered from a grounded supply of +5V or +12V. Input voltage specifications are shown below:
Current requirement is 80 mA @ 5 volt or 12 volt regulated, maximum. Typical average power dissipation is 325 mw for a 5V supply and 780mW for a 12V supply. Inrush current is the current above the non-touch steady state operating current that results in a transfer of charge. The maximum charge transferred due to inrush current is 15 mC, Q = ∫i·dt. The duration of inrush current shall not exceed 50 ms. Total noise and ripple must be less than 100 millivolts peak to peak for frequencies below 1 Megahertz, and less than 50 millivolts peak to peak for frequencies above 1 Megahertz. Serial InterfaceEIA 232E (Serial RS-232), DCE configuration. 8 Data Bits, 1 Stop Bit, No Parity, Full Duplex. Hardware handshaking: RTS/CTS. DSR is pulled HIGH (>+3V) by the CTR-502000-SC-RSU-0xR when connected and powered. DTR can be asserted by the host to interrupt the flow of data from the controller. Note that if the application does not monitor CTS, then an interval of approximately 5 seconds should be inserted between the issuance of a reset command and any other command. Baud Rate9600 (default) and 19200 USB InterfaceThe CTR-502000-SC-RSU-00R controller is an interrupt-type, full-speed USB device. The CTR-502000-SC-RSU-01R controller does not support USB communication. CommunicationsThe CTR-502000-SC-RSU-00R controller communicates with the host over either a serial port or the USB, but not both. The CTR-502000-SC-RSU-01R controller only communicates with the host by serial port. By default, the controller communicates over a RS-232 serial link. If, however, communication is received through the USB port, the controller switches to an exclusively USB communicating mode. Once switched into the USB mode, the controller hardware must be reset through a power cycle to restore RS-232 communication. CTR-502000-SC-RSU-00R supports full SmartSet protocol in both USB and serial modes. CTR-502000-SC-RSU-01R supports Custom Emulation protocol in serial mode only. Initial/ Stream/ Untouch Modes. Software DriversThe CTR-502000-SC-RSU-00R controller is compatible with all Elo drivers versions 4.6.3 and later on all supported platforms. Please consult Elo TouchSystems Technical Support for information regarding driver support for the CTR-502000-SC-RSU-01R controller. Touch Resolution4096x4096, size independent. Conversion TimeApproximately 10 ms per coordinate set. Ambient Operating and Storage Environmental ConditionsAll Humidity is non-condensing.
Figure 1. Storage and Operating Temperature and Humidity Conditions ESDController AlonePer EN 6100-4-2 1995. Level 4. ESD impulses applied directly to the pins on P2. The Serial port is tested to simulate ESD impulses applied to the monitor connectors. This is done by applying the ESD impulses to P1 via a 560 ohm resistor and a 10" wire. The pins to be tested in this way are shown in Table 1 - P1 pins for ESD testing. The USB pins, pins 1,3 and 4 are tested using an ESD generator equipped with a standard finger probe and set to 15kV. The ESD generator is applied to the series A receptacle at the host end of a 1m USB cable, which is plugged into the controller USB series B receptacle. The controller is powered up and grounded. The controller may not function correctly after applying the discharge, however, it functions without deterioration after reset or recycle of the supply. The ESD tests are conducted with the controller integrated into a monitor with the controller and the ESD generator grounded to the monitor chassis. Table 1. P1 Pins for ESD Testing
Controller and ScreenWhen ESD impulses are applied to an Elo surface capacitive screen connected to the CTR-502000-SC-RSU-0xR controller, the screen and controller combination is tested to the standards shown below:
EMIRadiationThe CTR-502000-SC-RSU-0xR controller is verified to comply with these standards for electromagnetic radiation.
The controller test configuration is as follows.
Verification of the controller's compliance does not guarantee compliance of the end equipment in which the controller is installed. SusceptibilityThe CTR-502000-SC-RSU-0xR controller is verified to comply with European Norm EN61000-4-3 section 9.B at a test level of 3 volts per meter. ReliabilityReliability performance is summarized in the following table: Table 2. Predicted Reliability
Shock and VibrationThe controller, when packaged in Elo standard controller shipping container, meets the requirements of the National Safe Transit Association project 1A test procedure. Agency ApprovalULElo TouchSystems controller model series CTR-* (* = all models) is a "CNR/USR" UL Recognized Component, category NWGQ2, Information Technology Equipment Including Electrical Business Equipment. Recognition information for the CTR family of models is contained in file number E162681 (Volume 2, Section 2, Issued 7-24-94). CEElo TouchSystems controller model CTR-502000-SC-RSU-0xR is CE compliant for use in the European Union (as a component it must be judged in its final use). The Elo Declaration of Conformity states compliance to the Low Voltage Directive 73/23/EEC (*all models, EN 60950/IEC 950) and EMC Directive 89/336; EEC (EN 50081-1 Class B, EN 50082-1). Test results are on file. FCCThe CTR-502000-SC-RSU-0xR has been tested to verify compliance with FCC class B limits. Test results are on file. Conformance to these or to more stringent limits may require special attention to system grounding and shielding, and it may be necessary to apply ferrite suppressor beads to cables. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Documentation
Hardware Functional SpecificationsThis section contains general information about the CTR-502000-SC-RSU-0xR controller's characteristics, some of which may be preliminary in nature. Please refer to MS600483, MKTG DWG,CTR-502000-SC-RSU-0xR, for accurate mechanical information. Mechanical CharacteristicsDimensions
Figure 2. Dimensions and Connector Location The CTR-502000-SC-RSU-0xR controller measures 1.4" by 3.3" overall. There are four mounting holes located as shown in Figure 2, each of a diameter of 0.156". Total height of the controller is less than 0.500". Components may extend a maximum of 0.338" above the top of the p.c. board. Leads and bottom components are a maximum of 0.100" below the bottom of the p.c. board. The p.c. board thickness is nominally 0.063". Connectors and Signal DescriptionsConnector descriptions and pin-outs are described in the following sections. Power and Interface Connector, P1The power/interface connector, P1, is a 1.25mm pitch 20 pin, top contact style connector designed for use with single wired pins in a 20 pin header. Pin numbering and functions are defined in P1 power and interface connectorFigure 3 and Table 3 through Table 5, below. Mating housing and terminals are required to meet the mechanical and electrical characteristics of the Molex 51127 housing and 50516 terminals. The power/interface connector location is shown in Figure 2.
Figure 3. P1 Power and Interface Connector Table 3. Power/Interface Connector P1 Pin Numbers and Signal Names
Table 4. USB Interface on Connector P1, Pins and Signal Names
Table 5. Serial Interface on Connector P1, Pins and Signal Names
Touchscreen Connector, P2The touchscreen connector, P2, mates to a standard Elo TouchSystems Surface Capacitive Touchscreen. Pin function and numbers are defined in Figure 4 and Table 6, below. Pin function relative to a typical Elo TouchSystems Surface Capacitive Touchscreen is shown in Figure 5.
Figure 4. Pin Diagram for Touchscreen Connector, P2
Figure 5. Normal Elo Surface Capacitive Touch Screen Connections Table 6. Touchscreen Connector, P2, Pins and Signal Names
Self Diagnostic FunctionsThe CTR-502000-SC-RSU-0xR controller has one LED status indicator, D5. At power on the LED blinks once and remains off during the microprocessor's power on self test. During this time the screen must not be touched or grounded in any manner. For the CTR-502000-SC-RSU-00R, upon completion of self tests, the LED blinks at a rate of once per second. Thereafter, when a touch is detected, the LED lights continuously. When no touch is detected, the controller LED resumes blinking at a rate of once per second. If an error condition is detected, the LED blinks at a rate of four times per second. For the CTR-502000-SC-RSU-01R, upon completion of self tests, the LED remains dark except while the screen is touched during which time it is illuminated. PerformanceTouch ResolutionX and Y axis coordinate range is {0,..,4095}. Coordinate OrientationOrientation for RS232 Communication
Figure 6. Default Touch Coordinate Orientation, RS-232 Communication When the CTR-502000-SC-RSU-0xR controller is connected to a Surface Capacitive touchscreen with normal wiring, the origin for the coordinate system is located at the bottom left corner of the touch surface. This orientation applies when the controller is communicating via an RS-232 serial port, when controller calibration and scaling features are disabled and when the touchscreen is positioned as shown in the figure above. This is consistent with Elo AccuTouch and IntelliTouch touchscreens. Orientation for USB Communication
Figure 7. Default Touch Coordinate Orientation, USB Communication When the CTR-502000-SC-RSU-0xR controller is connected to a Surface Capacitive touchscreen with normal wiring, the origin for the coordinate system is located at the top left corner of the touch surface. This orientation applies when the controller is communicating via USB, when controller calibration and scaling features are disabled and when the touchscreen is positioned as shown in the figure above. This orientation complies with section 5.9, "Orientation", of the USB Device Class Definition for Human Interface Devices (HID). Touch Reporting SpeedTouches are reported at approximately every 25 milliseconds at 9600 baud for serial communication. In USB mode, the interrupt interval is 8 milliseconds. Time from incidence of touch to the beginning of the coordinate report is typically 18 milliseconds in serial mode. Minimum touch duration to guarantee a touch report is 37 milliseconds. Grounded/Ungrounded OperationThe CTR-502000-SC-RSU-0xR controller requires that its power supply be grounded for correct operation. The CTR-502000-SC-RSU-0xR controller will show a deviation in reported touch position if the user touches ground while touching the screen. This deviation is less than 5% of the screen diagonal. Touch Detect TimeThe CTR-502000-SC-RSU-0xR controller will detect a touch within 10 milliseconds. Untouch Detect TimeThe CTR-502000-SC-RSU-0xR controller will detect an untouch within 10 milliseconds. LinearityThe CTRCTR-502000-SC-RSU-0xR controller, when used with an Elo touch sensor with measured linearity better than 1% will provide overall touch linearity better than 1.5%. Touch Pressure Dependent Position ChangeThe CTR-502000-SC-RSU-0xR controller reported touch position will deviate less than 2% of the screen diagonal as the touch varies from 0.3 Newton to 3 Newtons. JumperThe jumper function on the CTR-502000-SC-RSU-0xR controller is enabled by placing a shorting jumper on the jumper header. This function reinitializes the NVRAM with default data on the subsequent power on cycle. The stored serial number is not modified by this function. The jumper header location is shown in Figure 2. Drawings
Cable Drawings
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Specifications
for the 5020RSU controller (Part # E731406, RoHS compliant) include:
