Simpson 260-8XPI, Инструкция по эксплуатации, Страница: 18 / 28

18
more accurate reading.)
c. Plug the black test lead
into the –COMMON jack
and the red test lead into
the +jack.
d. Turn off power to the cir-
cuit to be measured and
discharge any capaci-
tors.
e. Connect the test leads
across the circuit voltage
to be measured with the
black lead to the
grounded side.
f. For the 2.5V range read
the value directly on the
scale marked 2.5VAC.
For the 10V, 25V, 50V and
250V ranges, read the red
scale marked AC and use
the black figure immedi-
ately above the scale.
3.8.2 AC Voltage Measurement 0-500V Range
Do not attempt any voltage measurement which may exceed 1000 volts or the
circuit-to-ground voltage of the Instrument, 1000 volts maximum.
Be sure that the range switch is set to the 250V/500V/1000V range, function switch
to AC volts only position, and test leads connected to common and 500V jack.
Do not touch the Instrument or test leads while the power is on the circuit being
measured.
Use extreme care when working in high voltage circuits. Do not handle the Instru-
ment or test leads while the circuit being measured is energized. OBSERVE ALL
SAFETY PRECAUTIONS in paragraph 3.2 and in the instruction manual for the
equipment being tested.
a.
Set the function switch to AC volts only position.
NOTE: The meter will not indicate if the switch is incorrectly set to a DC position.
b. Set the range switch at 250V/500V/1000V position.
c. Plug the black test lead into the -COMMON jack and the red test lead in the
500V jack.
d. Be sure the power is off in the circuit being measured and that all its capaci-
tors have been discharged.
e. Connect the test leads across the circuit voltage to be measured with the
black lead to the grounded side.
!
Figure 3-2. Frequency Response,
AC Voltage Ranges
R
O
R
R
E
E
VI
TA
L
E
R
T
N
E
C
R
E
P
+5
+4
+3
+2
+1
0
-1
-2
-3
-4
-5
10Hz
100Hz
1KHz 10KHz
100KHz
FREQUENCY
2.5 VAC RANGE
10VAC RANGE
50 VAC RANGE
250 VAC RANGE
500 VAC RANGE
1000 VAC RANGE
AC VOLTAGE RANGES