Simpson 260 - Frequency Correction - Models 260 and 270

OPERATING INSTRUCTIONS
5. Turn on the power in the circuit to be meas-
ured. Observe the meter reading. If the
voltage сап be read on а lower range, the switch
may be set for this range to obtain a more accur-
ate reading.
For the 0-2.5 Ve range read the value dir-
ectly on the special arc marked 2.5V. AC ONLY.
For the lOV., 50V., апа 250V. ranges read the
red arc marked A.C. and use the black figures
immediately above the arc.
For the 1000 V. range read the red arc mark-
ed A.C. Multiply the 0-10 figures by 100.
The Simpson Models 260 and 270 measure A.C.
RMS voltage using two germanium diodes in a mod-
ified full wave bridge circuit especially designed
to give a wide frequency response. They are use-
ful over а range from 10 cycles to 500,000 cycles
per second. The curves below show the response
of the 2.5, 10, and 50 volt ranges. The 2.5 and
10 volt ranges are within 5% from 10 to 100 KC/S.
MODEL 260 MODEL 270
SUBTRACT FROM
METER READING
20 "MES NI
С ДРАМИ. 4
ү tov |
METER READING p. SOV | AN |
5
ГЕ
КҮҮ
10
100
10K
{OOK
IM
10K
100K
IM
CYCLES ГЕН SECOND
FREQUENCY CORRECTICN - MODELS 260 and 270
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