Ag-Tester HT101S, Справочное руководство

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9
Tester- Tee Harnessing
To understand the flow of circuits and over-all Ag-Tester product design, one needs to start with an understanding of
the interface harnessing, “Tester-Tee Harnesses”. Two harnesses are used for full Tester functionality.
TT- AE27994 In-Line Harness TT- AE27993 Stand-Alone Harness
1-
In-Line Harnessing.
This is used for full system diagnostic operations where the full connection from the
display to the sensor or valve is intact. Here, the system is left intact with the Ag-Tester Tool inserted in the line
feeding the Valve or Sensor in question from the balance of the system.
a. When in the “monitor mode” “Tip Jacks” are available representing each possible connection between
the component and the rest of the system. This provides a connection point for either, the Ag-Tester
Tool or another meter, oscilloscope or some other tool so tests can be performed to determine the
cause of the problem.
b. When in the other provided “modes of operation” the circuit control lines are disconnected between
the component and system balance to allow for diagnostic functions to be performed.
i. The “HT101S” allow the sensor to be independently tested while at the same time sending
feedback to the system balance to allow for diagnostics.
2-
Stand-Alone Harnessing
. Stand-alone harnessing allows for components to be “bench tested”. Using the
stand-alone harness allows that the Ag-Tester Tool provides the operational power and signals to the devise
being tested to fully test the component.
a. Monitor mode is not used unless using the Tester as a “multi-meter” for basic tests.
b. When in other modes of operation, the type of test being performed is selected. The Tip Jacks do not
represent the “Power Supplied” “Red LED” using this function.
i. The HT101S allows for either digital or analog sensors to be tested with the HT101S providing
operational power and signal paths for analysis. The test jacks and Led indicators are available
for tests on signal lines.