Fluke 123 — руководство пользователя по измерительным инструментам [20/86]

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Fluke 123/124

Users Manual

Looking at the Measurement

Connections

Look at the top of the test tool. The test tool provides two

4-mm safety shielded banana jack inputs (red input A and

gray input B) and a safety 4-mm banana jack input

(COM). (See Figure 1-5.)

Input A

You can always use the red input A for all single input

measurements possible with the test tool.

Input B

For measurements on two different signals you can use

the gray input B together with the red input A .

COM

You can use the black COMmon as single ground for low

frequency measurements, and for Continuity, Ohm (Ω),

Diode, and Capacitance measurements.

Warning

To avoid electrical shock or fire, use only one

COM

(common) connection, or ensure that

all connections to COM

are at the same

potential.

Figure 1-5. Measurement Connections