Simpson 270-5, Инструкция по эксплуатации

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0-10. Then divide the reading by 10.
4.7 DC Voltage Measurement 0-2.5 Through 0-500V Range.
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 + jack.
c. Set the range switch at one of the
five voltage range positions marked
2.5V, 10V, 50V, 250V or 500V.
When in doubt as to the voltage present,
always use the highest voltage range
as a protection to the Instrument. If the
voltage is within a lower range, the
switch may be set for the lower range to
obtain a more accurate reading.
IMPORTANT: Be sure power is off in the
circuit being measured and all capaci-
tors discharged.
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. Turn on the power in the circuit be-
ing measured.
f. Read the voltage on the black scale marked DC. For the 2.5V range, use the
0-250 figures and divide by 100. For the 10V, 50V, and 250V ranges, read the
figures directly. For the 500V range, use the 0-50 figures and multiply by 10.
Turn off power to the circuit and wait until the meter indicates zero before discon-
necting the test leads.
4.8 DC Voltage Measurement 0-1000V Range
Use extreme care when working with high voltage circuits. Do not touch the
Instrument or test leads while power is on in the circuit being measured.
Before proceeding with the following steps, review Safety Precautions in Para-
graph 4.1.
a.
Set the function switch at + DC (Figure 4-1).
b. Set the range switch at 1000V (dual position with 500V).
c. Plug the black test lead into the - COMMON jack and the red test lead into the
1000V jack.
d. Be sure power is off in the circuit being measured and all capacitors dis-
Figure 4-1. Jacks and Switch
Positions for Measuring DC Voltages
!
2.5V.
1V
-D.C.
+D.C.
10V.
50V
μ AMPS
250V.
500V
1000V
COMMON
+1V.
+50 μ AMPS.
250MV.
1000V
AC. D.C
ALL TERMINALS 1KV. MAX.
WARNING
READ MANUAL BEFORE USE
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