Simpson 260 Series 8 - DC Voltage Measurement: 0-250 mV Range; DC Voltage Measurement: 0-1 V Range

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4.5 DC Voltage Measurement 0-250mV Range
Before making voltage measurements, review the SAFETY PRECAUTIONS listed
in paragraph 4.1. Also, when using the 260 as a millivoltmeter, care must be
taken to prevent damage to the indicating instrument from excessive voltage.
Before using the 250 millivolt range, use the 1.0-volt DC range to determine that
the voltage measured is not greater than 250 millivolts (or .25 volt DC).
a. Set the function switch at +DC (Figure 4-1).
b. Plug the black test lead into the – COMMON jack and the red test lead into
the +50 µA/250mV jack.
c. Set the range switch at 50 µA (common position with 50V).
d. Connect the black test lead to the negative side of the circuit being measured
and the red test lead to the positive side of the circuit.
e. Read the voltage on the black scale marked DC and use the figures marked
0-250. Read directly in millivolts.
NOTE: For polarity reversing see paragraph 4.2.
4.6 DC Voltage Measurement 0-1V Range
a. Set the function switch at +DC (Fig-
ure 4-1).
b. Plug the black test lead into the –
COMMON jack and the red test
lead into the +1V jack.
c. Set the range switch at 1V (com-
mon position with 10V).
d. Connect the black test lead to the
negative side of the circuit being
measured and the red test lead to
the positive side of the circuit.
e. Read the voltage on the black
scale marked DC and use the fig-
ures marked 0-10. Then divide the
reading by 10.
NOTE: For polarity reversing see paragraph 4.2.
!
Figure 4-1. Jacks and Switch Positions
for Measuring DC Voltages, 0 through
250V Ranges
D
.C
.
D
.C
.
2.5 V.
10 V.
1V.
25 V.
50 A.
␮ AMPS.
250 V.
500 V.
I000 V.
+
COMMON
-
- D.C.
+ D.C.
260
ALL TERMINALS 1 V MAX
+1V.
+10A
50 ␮ AMPS.
250 MV.
+