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ELC-03XS User Manual
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In addition, using a toggle switch a bridge balance circuit can be activated, to compensate for
the electrode artifact (BRIDGE mode, only in CC mode). An ELECTRODE RESISTANCE
test mode can be activated with a push button. The electrode resistance is measured directly in
M and displayed on the POTENTIAL display.
Input configuration:
The amplifier has two inputs, both for VC and CC mode. The signal applied to the analog
input BNCs is converted either into a voltage command signal (x1 or x10 scaling) for the VC
or VCx10 voltage clamp modes, or to a current in the CC, CCx10 and BRIDGE mode.
Besides this, a signal generated from the 10-turn HOLD potentiometer can be transferred into
a pulse using the GATE TTL input BNC. This control can be also used as HOLDING
potentiometer if the switch in the GATE BNC is turned off.
Computer control of the mode of operation
In the EXT position of the MODE SELECT switch all MODEs OF OPERATION can be
selected by TTL signals connected to the rear panel (see chapter 4).
Output configuration
The ELC-03XS amplifier has two output BNCs for POTENTIAL and one output BNC for the
CURRENT signal. The POTENTIAL OUTPUT x1 is a pure DC output that monitors the
electrode potential directly from the headstage. The signal at the POTENTIAL OUTPUT can
be high and low-pass filtered and amplified.
The current output signal is amplified and can be filtered by a low-pass filter.
Digital displays
All ELC amplifiers are equipped with two digital displays, one for CURRENT (nA) and one
for POTENTIAL (mV) or ELECTRODE RESISTANCE (M). The mode of operation is
indicated by LEDs located close to the digital displays.
Oscillation shut-off unit
All ELC amplifiers are equipped with an oscillation shut-off unit to protect the preparation. If
it is active all outputs of the amplifier were disconnected if the system begins to oscillate.
Penetration unit
All ELC amplifiers are also equipped with a penetration unit (BUZZ) to facilitate the
penetration of the cell membrane or to clean clogged electrodes.
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version 2.2
page 7
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