Testing Your BIA System
Your BIA system should be tested periodically to verify that
the impedance measurements are as accurate as possible.
The 500 ohm resistor supplied with your BIA system is used to verify
the integrity of your system.
The resistor is shipped in a plastic test
tube and looks like a piece of wire with a small brown cylinder on the
middle of it.
Testing Your Q3
The following steps will test the impedance circuitry, the subject cables,
the subject cable connector and the system's batteries. Follow these steps
to test your BIA system:
-
First make sure that your system is fully charged. It is very important
that your system is fully charged before continuing.
-
Disconnect the charging cord from the wall outlet.
-
Attach the 500 ohm resistor (located in the test tube) to the subject cables.
Note that the two red clips should be adjacent to the plastic middle of
the resistor and that the clips of the red cable should be on one side,
the black on the other (see diagram above).
-
Turn the power switch on, and note the resistance value displayed by the
impedance meter. The resistance displayed should be between 495 and 505
ohms. If the resistance is inside of this range, then the impedance circuitry,
cables and batteries are in good working order. If the resistance is outside
of this range, record the resistance value and continue with the next steps.
-
To check the subject cable connector, press lightly on the base of the
cables where they attach to the BIA system (labelled SUBJECT). If the resistance
fluctuates more than 10 or 15 ohms, the connector may be damaged. Record
the amount of fluctuation, and continue with the next step.
-
To check the subject cables, move the cables to different positions and
note the resistance displayed on the meter. Should the resistance fluctuate
more than 5 ohms, there is probably a break in the cables, and you should
call RJL Systems to order a replacement subject cables.
If all the previous steps were performed with good results, your BIA system
has checked out OK. If you experience unusual results while a subject is
being tested, review the sections Subject Interfacing and Electrode Placement.
If the results are still incorrect, call RJL Systems service department.
When you call, please have the results of the above tests available for
reference.
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