ISO-STIM 01B User Manual
version 1.8
page 7
(12)
ISOLATED OUTPUT plug (negative)
The ISOLATED OUTPUT signal is available at two plugs (red and black). The polarity of the
+/- POLARITY switch (
#6
) is not changed, i.e. the red plug is positive (+) if the output polarity
switch is set to +. This signal is completely isolated from ground. 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.
(13)
ISOLATED OUTPUT plug (positive)
See (
#12
).
(14)
OFFSET trim pot
Trim-pot to compensate for the OFFSET of the stimulating electrode. It is recommended to
compensate the offset only in a completely warmed up condition i.e. after 30 minutes warm-up
time. Compensation procedure is also possible in current mode.
(15)
OUTPUT rotary switch
Switch for selecting current or voltage stimulation and for setting the maximum range to be set
with the AMPLITUDE potentiometer (
#5
).
(16)
IPG TIME (µs) potentiometer with switch
Potentiometer to select the interphase gap time (IPG) in bipolar stimulation mode (see 3.5.2).
IPG is turned off in the leftmost position (switch).
(17)
DIRECT INPUT (TTL) BNC connector
A TTL signal can be fed in here to trigger the output of the ISO-STIM-01D. Amplitude will be
set by
#5
,
#6
,
#15
. In unipolar mode (
#4
) the output will be active as long as a TTL HIGH signal
is fed into this input. In bipolar mode the output will be active for the time a TTL HIGH signal
is fed into this input. After this time an additional pulse is generated at the output with the same
duration and amplitude but with opposite polarity. The time between these two pulses is set by
the IPG TIME potentiometer (
#16
).
Important
: For bipolar mode to work correctly with DIRECT INPUT TTL, the pulse length
should not exceed 100 ms. Also, the pause between two pulses must have at least the length of
the pulse plus the set IPG time.
(18)
TRIGGER INPUT (TTL) BNC connector
A TTL signal can be fed in here to trigger the internal timing unit. Duration of the output signal
is set by the DURATION potentiometer (#
3
). Amplitude is set by
#5
,
#6
,
#15.
(19)
MANUAL TRIGGER pushbutton switch
This pushbutton has the same functionality as the TTL input (
#18
), but is for manual operation.
