.. _buffered_cables:

.. |br| raw:: html

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Buffered Cables
===================

The buffered cables have an integrated amplifier ("line driver"). |br|
At higher frequencies (e.g. 10 kHz and above) and higher resistivities (1 kOhm and above) you get a phase shift from the electrode-cable input. |br|
In order to avoid that you will use buffer cables (length 25m (@64kHz target f) or 5m (@524 target f) ). For the :ref:`SHFT sensor <shft-02e>` this is a must.
For the MFS-07e you also can reach this necessity. |br|
As electrodes you should use a steel rod. |br|
The frequency range for this buffered cables ("electrode pre-amplifier") is 64 kHz down to 1 Hz.

**LF-RF-2** filter settings for the buffered cables. |br|
**LF-RF-1** filter settings for the coils. |br|

For the default electrodes (non buffered) you should use the **LF-RF-1** filter settings. |br|