User
Guide
for
Axoclamp
900A
Input/Output
Connections
Front
Panel
Figure
1.
Axoclamp
900A
Front
Panel.
Audio
Output
The
headphones
socket
drives
headphones
or
a
powered
speaker
to
monitor
the
audio
output
of
the
Axoclamp
900A.
The
output
is
the
same
as
that
available
at
the
rear
panel
headphones
socket.
Inputs
V
‐
CLAMP
COMMAND:
Voltage
commands
to
the
Axoclamp
900A
are
accepted
at
this
input.
The
External
Command
is
enabled
or
disabled
in
the
Options
/
General
tab
of
Axoclamp
900A
Commander.
MODE:
This
is
enabled
when
the
user
has
checked
one
of
the
Switch
to
dSEVC/TEVC
on
ext
input
checkboxes
in
the
Headstage
1
or
2
section
at
the
top
of
the
Axoclamp
900A
Commander.
For
example,
a
TTL
Low
(0–0.8
V)
input
at
MODE
could
select
one
of
the
V
‐
Clamp
modes
while
a
TTL
High
(2–5
V)
input
could
select
I
‐
Clamp.
These
inputs
can
be
a
TTL
Digital
Signal
controlled
by
pCLAMP.
High
and
low
behavior
is
user
selectable
in
the
Options
/
Auto
tab
of
Axoclamp
900A
Commander.
I
‐
CLAMP
COMMAND:
Current
commands
to
the
Axoclamp
900A
are
accepted
at
this
input.
The
External
Command
is
enabled
or
disabled
in
the
General
tab
under
the
Options
toolbar
button.
The
scaling
depends
on
the
headstage
connected
to
each
channel.
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