Benning MM P3 - Frequency Measurement Specifications; Pulse Duty Ratio Measurement Specifications; Measuring by Means of the BENNING MM P3; Measurement Preparation

12/ 2007 BENNING MM P3
25
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7.6 Frequency ranges
Overload protection for frequency measurements: 600 V
eff
7.6.1 Frequency ranges for square wave signals (Switch setting: Hz, %)
Measuring
range
Resolution
Measuring accuracy for 5 V
SS
max.
(square wave signal)
Sensitivity
5 Hz 0.001 Hz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
50 Hz 0.01 Hz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
500 Hz 0.1 Hz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
5 kHz 1 Hz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
50 kHz 10 Hz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
500 kHz 100 Hz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
5 MHz 1 kHz ± (0.3 % of the measured value + 5 digits) > 1.0 V
ss
(rectangle)
7.6.2 Frequency indication for sinusoidal signals (Switch setting: V
AC
, Hz, %) and
actuation of the „SELECT“ key:
Measuring accuracy: ± (0.3 % + 5 digits) applies to sinusoidal voltages of up
to 600 V
eff
(10 Hz - 500 Hz) and displayed values in the AC voltage range
(V
AC
) higher than 50 % of the final measuring range value
7.7 Pulse duty ratio for square wave signals (Switch setting: Hz, %)
Overload protection in the case of pulse ratio measurement: 600 V
eff
Meas. range Resolution
Measuring accuracy up to 5 V
SS
(square wave signal, 5 Hz - 5 kHz)
Sensitivity
(30 % ≤ % ≤ 70 %)
0.1 % - 99.9 % 0.1 % ± (0.5 % of the measured value + 3 digits) > 1.0 V
ss
(rectangle)
8. Measuring by means of the BENNING MM P3
8.1 Preparing the measurement
Operate and store the BENNING MM P3 at the specied storage and operating
temperatures only!
Do not permanently expose the device to sunlight.
- The connected black and red safety measuring lines comply with the valid
provision, if they are undamaged.
- Please protect the connected black and red safety measuring lines against
contamination and damages!
- Check insulation of the safety measuring lines. If the insulation is damaged,
multimeter must be replaced immediately.
- Check the safety measuring lines for continuity. If the conductor in the safety
measuring line is interrupted, replace the multimeter immediately.
- Before selecting another function by means of the rotary switch 7, disconnect
the safety measuring lines from the measuring point.
- Strong sources of interference in the vicinity of the BENNING MM P3 might involve
unstable readings and measuring errors.