Low-Voltage Tests; Application; Test Descriptions; Enable - Cablescan 90 Series Setup Manual

Series 90 Setup Manual

LOW-VOLTAGE TESTS

Application

Low Voltage Tests are basic Series 90 test functions and are run on both low voltage and high
voltage Series 90 systems. Low-voltage Tests are available when the tester type is set to Series
90 or Series 90HV. The Low-voltage Tests are described below:

Test Descriptions

Enable

Enable is used to turn on or off the low-voltage tests without requiring the check boxes for
each test to be unchecked. Enable can be unchecked while testing a high-voltage system and
only high-voltage tests are to be run.

System Status

System Status tests the following voltages and circuits and reports errors accordingly:
 VCC Voltage
 Ground Voltage
 +6.0V Voltage
 AD Reference Voltage

Short Test

Short Test performs shorts tests between all test points on the scanner boards. (Interface
cables must be disconnected during diagnostics.)

Sense Line Test

Sense Line Test verifies isolation and noise levels for each test point.

Raw FET On Test

Raw FET On Test verifies FET On condition for each test point by activating its 5-volt driver
and verifying that the FET pulls the signal to ground.

Raw FET Off Test

Raw FET Off Test verifies FET Off condition for each test point by activating its 5-volt
driver and verifying that the signal is not pulled to ground.

Capacitance Test

Capacitance Test verifies the capacitance for each test point. The result of this test is only
important in case the tester will be used to measure capacitors.

Resistor Bank

TestDiag uses a set of thirteen fixed resistors to verify the accuracy of the tester. These
values were selected to test the full range of the tester and each current source. A schematic
of the resistor bank is provided in Appendix A.
 +2.0V Voltage
 -5.0V Voltage
 RAM on the controller card
 Scanner Assign Errors
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