BA-01X User Manual
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version 1.9
page 14
(31) ELECTRODE RESISTANCE TEST push button
Push button for testing the resistance of the electrode. When this button is pushed
DISPLAY (2) shows the electrode resistance in M
Ω
(see also (3)).
The selected mode is indicated by the M
Ω
LED (3). The resistance is measured
accurately regardless of the correct setting of other front panel elements such as
OFFSET, BRIDGE BALANCE etc. (see also Important note below).
Caution: When the ELECTRODE RESISTANCE push button is pressed, the BA-01X
automatically applies current pulses of
±
1 nA to the electrode. Therefore, it should not be
used during recordings from cells since this current may stimulate or damage the cell.
Important: With high resistance electrodes (R
EL
>20 M
Ω
) the displayed value is dependent
on the setting of the capacitance compensation.
POTENTIAL OUTPUT unit
The OUTPUT unit consists of (32) POTENTIAL OUTPUT FROM
HEADSTAGE connector, (33) POTENTIAL OUTPUT GAIN switch
and (34) POTENTIAL OUTPUT (mV) connector.
(32) POTENTIAL OUTPUT FROM HEADSTAGE connector
BNC connector monitoring the recorded membrane potential. This signal is scaled in V
and comes directly from the headstage, i.e. it is not amplified.
(33) POTENTIAL OUTPUT GAIN switch
Switch to set the gain of the POTENTIAL OUTPUT (mV) (34). The measured potential at
the electrode tip is multiplied by a factor of 10 (x10) or 100 (x100).
(34) POTENTIAL OUTPUT (mV) connector
BNC connector monitoring the recorded potential with a gain set by the POTENTIAL
OUTPUT GAIN switch (33).
(25) GROUND connector
Banana jack that is linked to the internal system ground which has no connection to
the 19" cabinet and the mains ground to avoid ground loops.
