ISO-STIM 01D User Manual
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version 4.3
page 7
(
8, 10
) OVER LEDs
LED indicating that the amplifier is 10% below its negative limit (limit is ±100 V in
VOLTAGE OUTPUT MODE). In CURRENT OUTPUT MODE the limit (±100 V) is
set by the corresponding voltage at the electrode due to Ohm’s Law [V = I*R]), i.e. this control
indicates during an experiment in CURRENT OUTPUT MODE that the electrode resistance
increases and the amplifier is not be able to provide the current which is set if the electrode
resistance increases further.
(
9
) STIMULATION INDICATOR LED
LED indicating the application of a voltage or current stimulus. Independent of the
stimulus length the LED lights up for 300 ms at the beginning of each pulse.
(
11
) CHASSIS connector
Jack linked to the CHASSIS. The green banana connector of the supplied cable is
connected here.
(
12
) OUTPUT MODE switch
The output signal can be either a voltage (OUTPUT MODE switch set to
VOLTAGE) or a current (OUTPUT MODE switch set to CURRENT). The polarity
of the output signal is set by switch
#7
Important
: If the CAP.COMP. (
#15
) is overcompensated in CURRENT MODE the stimulus
isolator will ring and not work properly!
(
13, 14
) OUTPUT plugs
The ISOLATED OUTPUT signal is available at two plugs (red and black). The
polarity of the input or the +,0,- switch respectively is not changed, i.e. the red
plug is positive (+) if the output polarity switch is set to + or the analog input signal
is positive. This signal is completely isolated from earth. The black jack serves as
reference point for the isolated output signal. The black banana connector of the supplied cable
is connected to the black jack and the red to the red jack.
Caution
: THIS INSTRUMENT HAS A HIGH VOLTAGE OUTPUT (UP TO
100 V)!!!
Do not touch these pins or bare wires connected to these pins. Always turn power off if you
manipulate devices connected to these pins.
(
15
) CAP. COMP. trim pot
The CAP.COMP. potentiometer compensates for the input capacitances in isolated
CURRENT output operation only. Capacity compensation is achieved by turning the
potentiometer with a small screw driver clockwise, until the current signal at the oscilloscope
is as square as possible.
Important
: If the CAP.COMP. is overcompensated in CURRENT MODE the stimulus isolator
will ring and not work properly!
