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eC-test-mate

Hardware Reference Manual

Version 1.1.0.0.

10/21/2014

Содержание eC-test-mate

Страница 2: ...Description 19 Analog Inputs 201 202 19 Digital Inputs 201 204 20 Digital Outputs Group 201 and 202 20 Bi Directional Digital I O 20 Serial Channel UART 201 20 RS485 RS485 201 21 CAN CAN 201 21 I2C I2...

Страница 3: ...pter applying too high voltages may result in damage to the device Unlike the TEST OK fixture the Test Probes are connected directly to the Unit Under Test UUT hereafter without an intermediate nail b...

Страница 4: ...er If the Unit Under Test UUT requires more test points then there are available on one or when the mix of required test functions is not available from a specific eC test mate type then it is possibl...

Страница 5: ...ype I there are also references to the TEST OK Description Language TDL commands that can be used to control the functional blocks A block diagram of the eC test mate Type I is shown in the figure bel...

Страница 6: ...pecifications Input impedance 1 8M Input range 100mV 24V Resolution 1 mV Accuracy 20mV or 0 2 Sampling rate 2kHz with digital filtering The maximum allowed input voltage that will not result in damage...

Страница 7: ...rt circuit by means of a 100 series resistor Clamping diodes protect the outputs against voltages above 26V and below 0V if such voltages were inadvertently applied to the outputs All outputs are set...

Страница 8: ...working input voltage is 24V Clamping diodes protect the inputs against voltages above 25V and below 0V The maximum allowed input voltage that will not result in damage is 31V Some of the inputs have...

Страница 9: ...d for 5V and 24V is applied on the corresponding EC test mate pin then there will be a voltage of 18 5V across the 100R resistor which would result in 3 4W dissipation Note besides the maximum current...

Страница 10: ...the input pins the open drain outputs have this series resistor as well resulting in a voltage divider This may cause unexpected behaviour is low resistance pull up resistors are present Associated te...

Страница 11: ...st and guarantees that there is no unnecessary delay between the reception of data and the availability on the host The RxTimeout method allows to synchronize with the stream of bytes from the target...

Страница 12: ...vantage is that the receiving software does not need to have any knowledge about the packet size If the packet contains bytes with the same value as STX and ETX then these values cannot be transmitted...

Страница 13: ...rarily disconnect due to a reset of the USB circuitry Worst case voltage output accuracy is 0 25 When switched off the power supplies are disconnected from the connector Note that if a value lower tha...

Страница 14: ...he pin is called BOARD_DETECT Note it is mandatory that the Board Detect pin of every eC test mate that is used in a test is connected to GND on the UUT when using the TEST TRACK or eC my test softwar...

Страница 15: ...Digital Output 102 2 Input 0 24V Output Open drain 12 Digital Input 103 Digital Output 102 3 Input 0 24V Output Open drain 13 Digital Input 104 Digital Output 102 4 Input 0 24V Output Open drain 14 Di...

Страница 19: ...nds that can be used to control the functional blocks A block diagram of the eC test mate Type II is shown in the figure below As can be seen from the diagram the numbering of inputs outputs and other...

Страница 20: ...outputs the line can be left floating by setting the output to 0 A pull up resistor shall be present on the UUT Serial Channel UART 201 The serial channel numbered as 201 is designed to work with sign...

Страница 21: ...s RS485 driver will be in the high impedance state See section Serial Channel UART 101 for the configurable parameters baud rate etc Associated test command s CONFIG_RS485 TRANSMIT_RS485 RECEIVE_RS485...

Страница 22: ...8V for longer periods to these test pins may damage the eC test mate Currently the SCL clock frequency is fixed at 100kHz Associated test command s I2C_START I2C_WRITE I2C_READ I2C_STOP Programmable...

Страница 23: ...Digital Input 203 Digital Output 202 3 Input 0 24V Output Open drain 13 Digital Input 204 Digital Output 202 4 Input 0 24V Output Open drain 14 UART 201 VCC 0 5V typical 0 24V allowed 15 Digital Outpu...

Страница 27: ...s on the connectors of the eC test mate Type III there are also references to the TEST OK Description Language TDL commands that can be used to control the functional blocks A block diagram of the eC...

Страница 28: ...e digital level goes from 0 to 1 at 1 5V while remains 1 until the voltage drops below 0 75V Digital Outputs Group 301 A total of seven digital outputs are provided The output voltage corresponding to...

Страница 29: ...alog value in firmware 7 Analog Input 302 Digital Input 302 8 Analog Input 303 Digital Input 303 9 Analog Input 304 Digital Input 304 10 Analog Input 305 Digital Input 305 11 Analog Input 306 Digital...

Страница 30: ...yright TEST OK All Rights Reserved 30 35 Max 7W or 1A when used with TEST Mate docking station Without the docking station the maximum depends on the power capabilities of the USB port 2W typical 22 G...

Страница 34: ...eC test mates to provide up to 7W instead of 2W when connected to a regular USB port Second eC test mates connected to the Docking Station are electrically isolated from the PC and from the mains pow...