Simpson 260 - Measuring A.C. Voltage to 5000 Volts; Measuring Output Voltages

OPERATING INSTRUCTIONS
MEASURING А.С. VOLTAGE ТО 5000 VOLTS
WARNING: Be extremely careful when working on
high voltage circuits. Do not touch the meter
or test leads while power is on in the circuit
being measured.
1, Set the function switch at A.C.
2. Set the range selector switch at 5000 V.
3. Connect the black lead to the COMMON-jack
and the red lead to the А.С. 5000 V, jack.
hl. Ве sure power is off in the circuit to be
measured and that all its capacitors have
been discharged. Connect the test leads.
5, Turn on the power in the circuit to be meas-
ured. Do not touch the meter or test leads.
6. Read the voltage on the red arc marked A.C.
Use the 0-50 figures and multiply by 100.
"7. Turn off the power before disconnecting the
test leads.
MEASURING OUTPUT VOLTAGES
An output voltage is the A.C. component only,
in & mixture of A.C. and D.C. voltages. This
occurs mostly in amplifier circuits.
Models 260 and 270 have & capacitor in series
with the OUTPUT jack. This blocks the D.C. com-
ponent of the current, but allows the desired A.C.
component to pass on to the meter circuit. The
blocking capacitor alters the A.C. response. The
following curves show the кы range over
which the accuracy is within 210%. However, the
instrument ís useful up to 600 kilocycles per
second.
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