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2.
Vertical Scale on Oscilloscope
The actual vertical scale of the oscilloscope is equal to the
attenuation factor multiplied by the range of vertical scale
selected on the oscilloscope. For example, with the probe on
factor 10x, the oscilloscope on 0.5 V/div, the real vertical scale
is 10 x 0.5 = 5 V/div. With the probe on 100x, the real vertical
scale is 100 x 0.5 = 50 V/div. These values apply when the
oscilloscope is set to 50 Ω input. When the oscilloscope is set to
1 MΩ input, the actual vertical scale will be halved: 2.5 V/div for
the 10x probe setting and 25 V/div for the 100x probe setting.
See the chart below.
Vertical Scale on Oscilloscope
Probe
Scope Input
Output
Impedance
Impedance
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
1 MΩ
50 Ω
1 MΩ
3.
External Power Source
Power consumption of the probe is about 200 mA, thus it is not
suited for battery usage. Use the supplied adapter only. The
probe may be damaged when the input power exceeds 12 VDC.
4.
Using a DMM
Using a DMM rather than an oscilloscope can significantly
increase your accuracy. Use the CT2944-50 plus the CT3956
converter to use the probe with a DMM.
800-572-1028
Probe
Vertical Scale
Attenuation
Reading on the
Setting
Oscilloscope
10x
0.5 V/div
100x
0.5 V/div
10x
0.5 V/div
100x
0.5 V/div
caltestelectronics.com
Actual Vertical Scale
of the Oscilloscope
5 V/div
50 V/div
2.5 V/div
25 V/div
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