7.5
Using external probes
You can use any probe with Bode 100 that offers a standard BNC connector. The use of probes can
have the following advantages:
•
Reduction of the capacitive loading added by connecting Bode 100 to your circuit.
•
Easier probing possibilities when no BNC connectors are available on the DUT.
•
Protection of Bode 100 from hazardous voltages if isolating probes are used.
1 MΩ 10:1 probes are recommended. 1 MΩ probes feature a divider in the probe that lowers
DC voltage as well. Furthermore 1 MΩ probes provide a lower impedance path that reduces
channel-channel crosstalk and noise. OMICRON Lab recommends using the PML-111O
probe from PMK for the use with Bode 100.
For more information on how to configure probes correctly, how to perform calibration and how to set
up the Bode Analyzer Suite, please refer to the User Manual.
WARNING
Death or severe injury due to hazardous voltage levels possible.
Bode 100 is a SELV device and the housing is not connected to safety ground via the
power supply.
► Ensure that voltage and current probes used with Bode 100 are properly grounded
in accordance with their manufacturer's guidelines.
► When working with voltage or current probes, always connect the Bode 100's
ground terminal (available for HW Rev. 2 or higher) with a solid connection of at
least 3.6 mm² cross-section and not longer than 10 m to the ground terminal in the
laboratory.
NOTICE
Risk of permanent damage of the device.
The inputs of Bode 100 inputs are AC coupled with a maximum allowed DC voltage of 50 VDC. A
standard, passive, 10:1 probe with 9 MΩ tip-resistor will not divide the DC voltage.
► Use suitable probes when measuring on DC levels above 50 V
► Do not use standard 10:1 oscilloscope probes with the Bode 100
OMICRON Lab
Getting started
21