Test-Ok eC-test-mate, Hardware Reference Manual

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eC-test-mate Type II (TCC 212)
This type focuses on communication interfaces. Besides a power supply, two analog inputs and four digital
bidirectional in/outputs and four digital outputs, interfaces for some common standards are provided: CAN,
RS485, I2C and UART.
Functional Description
This section describes all the functional blocks of the eC-test-mate Type II which is specialized for testing
UUTs with communication interfaces.
Besides the electrical specification of the interface pins on the connectors of the eC-test-mate Type II 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 II is shown in the figure below:
As can be seen from the diagram, the numbering of inputs, outputs and other functions start at 201. The
reason is that multiple eC-test-mate types can be combined into one bigger tester. The first digit indicates
the eC-test-mate type (2) while the last two digits increment up from 1.
Note that the UART and RS485 blocks use the same internal UART, resulting in only one of the two blocks
being active.
Analog Inputs (201..202)
There are two identical high impedance analog inputs (numbered 201 and 202) on the board which are fed
into 12-bit Analog-to-Digital Converters (ADC for short).
The valid input voltage range is 100mV..24V, with a resolution of 1 mV.
See
Analog Inputs (101..104) for a detailed description of the specifications.