Metrohm 746 VA Trace Analyzer - Manual (Page 340)

5.7.3 Alphabetical instruction list
746 VA Trace Analyzer / 747 VA Stand
5-189
The phase dependent differences in the current measurements give
curves which can be evaluated using the baselines of type
AC2 rel. or
AC2 abs. (see section 5.6.3).
U / 2
I.abs
I
U
Comments • The AC2MODE measurement mode can be used with all types of
electrodes together with the instructions MEAS , SWEEP , DSWEEP ,
FSWEEP or TSWEEP .
• The electrode type DME , SMDE , HMDE or RDE must be entered before
the AC2MODE measurement mode.
• With the AC2MODE measurement mode, the potentiostat always
operates in the operating mode "fast". SWEEP and FSWEEP are thus
identical for this mode.
• The quantity t.drop important for the definition of t.step depends
on the type of electrode selected:
DME t.drop = 20 ms
HMDE and RDE t.drop = 0 ms
SMDE t.drop = Drop.size ×× 40 ms
see also AC1MODE, SWEEP, DME, SMDE, HMDE, RDE
Σ (I
n+
– I
n–
)
n
I =
I.rel = I
f
+ I
r
I
f
I
r
n = Meas.cycles