Datasheet
714-921-9095 bkprecision.com 6
consumption may increase. As this 50 Ω input is a low
impedance connection, it is possible to extend the cable
without difculty.
3. Switch the probe “ON.”
4. Switch to the desired attenuation ratio.
5. Use the hook probes to contact the circuit to be tested.
1.4 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 set on attenuation 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 the typical 1 MΩ
impedance input. When the oscilloscope is set to 50 Ω input, the actual
vertical scale will be doubled: 10 V/div for the 10x setting and 100 V/div
for the 100x setting. See Table 1.
Vertical Scale on Oscilloscope
Scope Input
Impedance
Probe
Attenuation
Setting
Actual
Attenuation
Setting
Vertical Scale
Reading on the
Oscilloscope
Actual Vertical
Scale of the
Oscilloscope
1 MΩ 10x 10x 0.5 V/div 5 V/div
1 MΩ 100x 100x 0.5 V/div 50 V/div
Table 1 Oscilloscope Readings
Offset Zero Procedure
The PR-60 differential probe can be adjusted to zero the probe’s offset
voltage using the offset adjustment tool supplied with the probe.
Follow this procedure to perform the offset adjustment.
1. Connect the PR-60 probe to channel 1 of the scope. Turn
on the probe power. You may use the USB power cable or