Simpson 260-8XPI, Инструкция по эксплуатации, Страница: 14 / 28

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Figure 3-1. Operational Items and Features
4. Circuit Jacks: There are eight jacks on the front panel marked
with the functions they represent. These jacks pro-
vide the electrical connections to the test leads.
The COMMON (-) jack is used (in conjunction with
the black test lead) as the reference point for the
measurement of all the functions with the excep-
tion of the 10A range.
5. Point Adjust For Zero: With the Volt-Ohm-Milliammeter in an operating
position, check that the pointer indicates zero at
the left end of the scale when there is no input. If
pointer is off zero, adjust the screw located in the
cover below the center of the dial. Use a small
screwdriver to turn the screw slowly clockwise or
counterclockwise until the pointer is exactly over
the zero mark at the left end of the scale. With the
indicating pointer set on the zero mark, reverse
the direction of rotation of the zero adjuster slightly
to introduce mechanical freedom or “play”, but in-
sufficient to disturb the position of the indicating
pointer. This procedure will avoid disturbances to
the zero setting by subsequent changes in tem-
perature, humidity, vibration, and other environ-
mental conditions.
6. Reset Button: This white button is the overload protection circuit
breaker. Resetting this button will restore meter
to full operation, providing overload condition has
been removed.