User
Guide
for
Axoclamp
900A
Additional
Notes
Output
signal
gain
is
also
affected
by
the
headstage
current
injection
resistor
selected.
Scaled
Output
Gain
is
telegraphed
to
compatible
data
acquisition
programs.
Lowpass
Filter
The
type
of
lowpass
filter
enabled,
Bessel
or
Butterworth,
is
displayed
in
the
Scaled
Output
section
in
the
lower
half
of
both
V
‐
Clamp
and
I
‐
Clamp
tabs.
Filter
cutoff
frequencies
are
displayed
in
the
adjustable
field
to
the
right
of
the
filter
type.
The
Axoclamp
900A
Commander
offers
a
choice
of
two
different
lowpass
filters
to
the
Scaled
Output:
Bessel
or
Butterworth.
Select
these
on
the
Options
/
General
tab.
Different
cutoff
frequency
settings
are
available
for
the
two
filter
types.
Right
‐
click
on
the
adjustable
field
to
see
the
options.
Bessel
is
the
default
lowpass
filter,
as
it
is
preferred
for
time
‐
domain
analysis.
How
To
Set
the
Lowpass
Filter
Check
you
have
the
correct
filter
type.
To
change
it
go
to
the
Options
/
General
tab.
Adjust
the
field
value
using
glider
control,
or
select
from
the
right
‐
click
popup
menu,
to
set
the
desired
filter
cutoff
frequency.
Changes
apply
immediately.
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