Solartron 1287 - Polarisation

fc.v^j V/
[rest
V/II
selected with half
standby
The
sequence starts
at half
standby and ends
at the rest level.
Switching
from ’ON’ to
’STANDBY’
When
the ’standby’
action key
is pressed,
the cell is switched
from its
present
’on’ state directly
to either
full or
half standby
(according to the
STANDBY
menu set
up).
3
POLARIZATION
The polarization
voltage, current
and input
of the cell
are selected
using this key
in SET
UP mode.
3.1 {POL V}
> >
Remote command
PVF.
Refer
to Chapter
4,
Section 6.
1
.
Polarization
Voltage.
In potentiostatic
mode,
the SI 1287 applies
a controlled
d.c.
potential difference
across
RE1 and RE2.
This voltage
is set up via POL
V menu.
3.2
{POL
1}
> >
Remote command
PCF.
Refer to
Chapter
4,
Section 6.
1
.
Polarization
Current.
In galvanostatic
mode, the
SI1287 drives
a controlled
d.c.
current through
the cell
This current
is set up via POL
I menu.
The
polarisation
current selected
must
be
within
the
range
dictated
by the
standard resistor
in use,
as given in
section 2.1.
3.3
{POL I/P}
> >
Remote
command
PI/. Refer
to Chapter
4,
Section 6.1.
Polarization
Input.
This is an
externally generated
polarization voltage
signal,
which
may be
added to the internal
d.c.
polarization voltage
set.
The external
signal
(e.g. from the
generator of an FRA)
may
be
left
at unity
gain
or attenuated
by
xO.Ol
(40dB)
by selecting
the appropriate
POL I/P menu
option:
[xl
j
or [x.01].
Selecting
[x.01] improves
the
signal-to-noise
ratio if the external
signal
noise is
proportionally lower
at high signal
levels.
3.8
JWS / SI1287
User Guide
/ Issue AF