Simpson 260 - DC Voltage Measurement 0-250 Mv Range; DC Voltage Measurement 0-1 V Range

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4.6 DC Voltage Measurement 0-250mV Range
Prior to making voltage measurements, review the SAFETY PRE-
CAUTIONS listed in paragraph 4.2. Also, when using the 260 as a
millivoltmeter, care must be taken to prevent damage to the indicat-
ing instrument from excessive voltage. Before using the 250 millivolt
range, use the 1.0-volt DC range to determine that the voltage mea-
sured 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 in 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 4.3.
4.7 DC Voltage Measurement 0-1V Range
a. Set the function switch at +DC (Figure 4-
1).
b. Plug the black test lead into the – COM-
MON jack and the red test lead into the
+1V jack.
c. Set the range switch at 1V (common po-
sition with 10V).
d. Connect the black test lead to the nega-
tive 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
0-10. Then divide the reading by 10.
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.
+
NOTE: For polarity reversing see paragraph 4.3.