VA-10X User Manual
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version 7.0
page 8
INPUT unit
The INPUT unit consists of
(5)
INPUT coupling switch and
(10)
INPUT ÷10 mV
connector.
(5)
INPUT coupling switch
The switch must be set to ON, if an external waveform is used. If no external waveform
is used, the switch should be set to OFF to avoid coupling of noise.
(10)
INPUT ÷10 mV connector
If an external waveform is used the external source is connected to the INPUT ÷10 mV
BNC connector. The voltage supplied is divided by ten internally before reaching the
headstage.
Important
: If an external voltage source is used, the 3-position toggle switch
controlling the internal voltage source (#
6
) should be set to “0”. If the switch is set to
“-“ or “+”, the voltage at the electrode is the sum of the external voltage and the internal
voltage source.
COMMAND unit
The COMMAND unit consists of
(6)
COMMAND
polarity switch,
(7)
COMMAND potentiometer and
(8)
COMMAND voltage display
(6)
COMMAND polarity switch
This switch selects the polarity of the COMMAND voltage. “+” corresponds to a range
of 0 - +1000 mV, “-” to a range of 0 - -1000 mV and “0” disables the internal voltage
source.
(7)
COMMAND potentiometer
10-turn potentiometer for dialing the COMMAND voltage for DC amperometry if the
internal voltage source is used. The polarity is set by switch #
6
and the amplitude is
displayed at #
8
.
(8)
COMMAND voltage display
LC display that monitors the amplitude of the COMMAND voltage (XXXX mV).
(9)
POWER switch
POWER switch to turn on/off the power.
