{NULL}
> >
Remote
command is
NUZ. Refer to Chapter
4,
Section 6.16.
Nulling
compensates for
stray voltages induced in the cell leads.
The three
commands
involved are:
loffl
Null values
no longer applied, but retained
for further use
(when
they are
re-applied
in accordance with
the Null ON command). These values
may
be
overwritten
by another evaluate
sequence.
[on]
Re-applies previously
evaluated null values, after Null
OFF has been selected.
[Evaluate]
This starts the
nulling sequence in which the stray
voltages are measured,
stored
and then applied
as
null values.
The instruction;
GDNRE1&2
S/CDVMI/P
O/C WE&CE ENTER
is displayed indicating
that the user must:
1/ Ground
RE1 and RE2
2/
Short circuit DVM I/P
3/ Open circuit WE
and CE
4/ Press
ENTER (to continue).
During the evaluation
"NULLING" is
displayed.
Do
not alter any connections
or enter commands
at this time.
A "NULL
COMPLETED"
message appears briefly and the SI1287
beeps,
when
the nulling offsets have
been
evaluates
and stored for
future use. The
SI1287 switches
to standby, and the NULL
is
left
set to ’on’.
JWS / Si 1 287 User Guide
/ issue AF
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