EXT-10C User Manual
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(
3
) GAIN DC switch
Switch to set the GAIN of the outgoing DC signal. Three GAIN factors are
available: x10, x100 or x1k.
(
4
) C-COMP
.
potentiometer
Control for compensation of stray capacities of the microelectrode (10 turn
potentiometer, range 0-20 pF). Due to the positive feedback circuit
overcompensation of the capacity will lead to oscillations which may damage the
cell.
(
5
) POTENTIAL x10 meter
The analog POTENTIAL monitor displays the offset in the range of
±
30 mV
and is used for optimal cancellation of the OFFSET.
(
6
) –OVER +OVER LEDs
LEDs that indicate if the amplifier 10% below it’s positive or negative limit
(±10 V). The linear range of the amplifier is
±
12 V.
(
7
) OFFSET potentiometer
10 turn potentiometer to compensate for the OFFSET of a DC signal.
Note
: Position 5 on the OFFSET control corresponds to 0 mV offset.
(
8
) GAIN AC switch
Switch to set the GAIN of the outgoing AC signal. Three GAIN factors are
available: x100, x1k or x10k.
(
9
) AC OUTPUT connector
BNC connector providing the amplified signal AC coupled. The amplification factor
is set by switch (
8
).
(
10
) NOTCH switch (optional)
Switch to set the NOTCH filter (50 Hz / 60 Hz) or to bypass the NOTCH filter (switch
position OFF).
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version 1.5
page 8