[CE
o/c]
Known as "half standby",
in which only
CE is isolated. In half
standby, only
the following
measurements are valid:
RE1, RE2, ARE, ARE-Bi, DVM I/P, POL,
IPOL, CE, I,
I-Bi.
Invalid
measurements are not displayed,
as
stated in [all o/c].
2.4
{ON MODE}
> >
The remote command
is
ONw. Refer
to
Chapter
4,
Section
6.3.
Selects the initial polarisation conditions of the cell when the SI1287
is switched
from the ’standby’
state to ’on’ mode. The use of this parameter prevents the cell
from
experiencing high voltages or currents at switch on, in the short time
before
the SI 1287 feedback loops gain full control.
On completion of the "polarization on" sequence the cell may be polarized
either
"at rest" or
at a
previously
defined level. This is known as the polarization "on
mode".
[pol V/I] selected with full
standby
When
the ’ON’ action key is pressed, the
SI1287
goes through
a
controlled
polarization sequence,
from full standby to
the
setup of
POL V
(or POL I) to
the
cell.
The following Table 3.2 shows the sequences that occur, for both
P
STAT and
G
STAT modes, except where indicated.
Table
3.2
Polarization ON Sequence
Sequence Followed
Full Sequence
Pol
V/i
&
Full
Standby
Pol
V/I
& Half
Standby
Rest V/I
& Full
Standby
Rest V/!
& Half
Standby
1
-
1
.
1
.
Full Standby. (Initial state)
2 2 2 2
2. Half
Standby.
3
-
3
-
3. One second pause. (RE1 and RE2 settle.)
4 4 4 4 4.
ARE Measured. (Cell’s
rest potential)
5 5 5 5 5. Polarisation set to rest potential and
bandwidth Type J* selected.
6 6 6 6 6. All electrodes connected.
7
7
7
7 7. 40ms pause (for
polarization
to stabilize).
8 8 8 8 8. Selected bandwidth is set.
9 9
- -
9. Selected polarization applied to
each cell.
*
For the G STAT mode Polarisation current is set to zero and bandwidth Type
C
is selected.
[pol V/I] selected with half standby
The sequence starts from half standby and no pause is required.
[rest V/I] selected with full standby
The full sequence is performed, except
step
9. This means that
the
polarisation
will remain at the rest level.
JWS / S1 1 287
User Guide /
issue
AF
3.7
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