Startup Procedures; Before Applying Power; Before Using The Test Fixture; Fixture Options - Protek 9216A User Manual

Startup Procedures

When turned on, the meter will first enter the self-test mode and perform the
following procedure: first, it will display the program version "0X" and the model
number "HC9216" for about three seconds. Next, the meter will display "test" and
"....." while it performs the self-test. If all tests are successful, "test pass" will be
displayed as a result. In order for the self-test to operate correctly, it is important
to follow certain startup procedures.

Before Applying Power

Prior to turning the unit on, be sure there are no components in the input fixture.
Components in the fixture will cause the self-test to fail and display an error code.

Before Using the Test Fixture

When the self-test is completed, "over range" will be displayed, and the user can
proceed to set up the test conditions and to make measurements. For maximum
accuracy, however, a "null calibration" of the test fixtures needs to be performed
before taking any measurements.

Fixture Options

On the front panel of the instrument there are four BNC connectors designated IL,
PL, PH, IH. In what is known as a "4-wire Kelvin connection," two of these
terminals provide current to and from the device under test, and two of the
terminals sense the potential (voltage) across the device. Separate wires are
used for sensing the voltage so to minimize the effect of the current in the sensing
wires inside the meter and to minimize stray impedance that can cause
measurement errors.
There are several fixtures available for special measurements: Radial fixture
(standard), Kelvin clips, SMD tweezers, and BNC adapter. The optional fixtures
may be purchased through our distributors.
The standard 9216A test fixture attaches to the four input terminals on the front
panel of the meter and provides two polarized, spring-loaded connection slots to
secure radial-leaded components under test while they are being measured. The
fixture also accommodates axial-leaded components whose leads are bent to
enable insertion into the fixture. Most components will plug into this test fixture,
thereby eliminating the need for special fixtures.
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