Simpson 260-8XPI, Инструкция по эксплуатации, Страница: 7 / 28

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1.4 Overload Circuit Test
a. Set the range switch to R X 10,000 POSITION and the function switch to -DC
POSITION.
b. Plug the black test lead into the -COMMON jack terminal and touch the other
end of the test lead to the +10 A input terminal. (The relay reset button
should rise, indicating that the overload circuit is in working condition.)
NOTE: No damage will occur to the Instument as a result of this test.
1.5 Printed Circuit
Most of the component parts are mounted on a printed circuit board which simpli-
fies assembly and maintenance, thus, extending the useful life of the Instrument.
1.6 Adjust-A-Vue Handle
A carrying handle is attached to the Instrument case. The handle may be used to
support the Instrument in a convenient sloping position for easy viewing. The
case can also be placed in either a vertical or horizontal position. The horizontal
position is preferable for greater accuracy since the Instrument is calibrated in
this position.
1.7 Test Leads
Each Instrument is furnished with one pair (Catalog Number 00125) of probe
type test leads (one red and one black, each 48 inches long) for all applications
of the Instrument. These test leads have elbow prods on one end to connect the
leads to the recessed jacks on the Instrument front panel. The probe tips at the
opposite end have threaded shoulders to accept the screw-on insulated alligator
clips (furnished with the test leads). The test leads and the insulated alligator
clips are rated for the voltage and current ranges available on the 260. Maximum
ratings are 1000V AC or DC or 10 DC amperes. These ratings for the test leads
must not be exceeded in any application.
1.8 Technical Data
Table 1-1. Technical Data
1. DC VOLTS:
Ranges:
0-2.5-10-25-50-250-500-1000V
Sensitivity: 20,000 ohms per volt
2. DC MILLIVOLTS:
Range:
0-250mV
Sensitivity: 20,000 ohms per volt
3. AC VOLTS:
Ranges:
0-2.5-10-25-50-250-500-1000V
Sensitivity: 5,000 ohms per volt