BAS 100B/W - Page 29

3-4
Com Port
This specifies which PC communications port is connected
to the BAS 100B. A value of 0 disables the
communication.
Baud Rate
This specifies the rate at which information is transferred
between the PC and the BAS 100B.
Line Freq.
This specifies the line frequency of the local A.C. voltage.
The selected frequency determines the default
Sample
Width
for pulse experiments - 17 ms for 60 Hz and 20 ms
for 50 Hz (1 line cycle is selected in order to minimize line
frequency interference).
Cell Stand
The BAS 100B/W can control the purging and stirring for
the BAS Cell Stands and the BAS Controlled Growth
Mercury Electrode (CGME). The knock/dispense routines
for the
SMDE
and
CGME
modes of the Mercury electrode
are also controlled by the BAS 100B/W, so the
Cell Stand
option must be set accordingly (the
SMDE
option can also
be used for the PAR 303A SMDE).
Purge/Stir
This activates purging/stirring between experiments.
Couple
This couples purging and stirring during the deposition step
of stripping experiments.
Audible
This activates a beep before and after each run
Knock
This synchronizes the drop knock/dispense of a mercury
electrode with the end of the potential pulse. If
Knock
is
not checked, then no knock or dispense will occur before or
during the experiment when using the
SMDE
or
CGME
modes (however, if
Controlled DME
in the
Controlled
Growth
dialog box is checked, then the valve is held open,
but no knock occurs).
PreDrops
This is the number of mercury drops dispensed from a
mercury electrode before the start of an experiment
(provided the
Knock
option is checked). For
SMDE
experiments using the BAS CGME, the number of
Pre
Drops
depends on the selected drop size as well as the
number entered. For
CGME
experiments, the number of
Pre Drops
delivered will match the number entered,
regardless of the drop size, and entering 0 will allow the
same drop to be used for multiple experiments (except in
polarography experiments).