10-9
Mode = CV
General Parameters
Initial E (mV) = 0 -3276 to 3276
High E (mV) = 0 -3276 to 3276
Low E (mV) = 0 -3276 to 3276
Scan Rate = 100 1 to 51200 (
µ
V/s)
1 to 51200 (mV/s)
1 to 300 (V/s)
Initial Direction = Negative Negative or Positive
Number of Segments = 2 0 to 65535
Sensitivity = 1
µ
A/V 100 mA/V to 100 nA/V (10 pA/V with the
Low Current Module)
Specific Parameters
Sample Interval (mV) = 1 1 to 20
Quiet Time (sec) = 2 0 to 65535
Comments
(
LSV
/
CV
)
a) The wave form generator that drives the potentiostat is a Digital-to-Analog
Converter (DAC) with 2
16
(65,636) resolution elements. The resolution of the
staircase potential wave form is 0.1 mV, which generates a potential range of
±
3276 mV. The rate at which the potential can change (the
Scan Rate
) is
dependent on the rate at which each digital element can be changed. This rate
is determined by the speed of the clock pulses, which is set at 2.048 x 10
6
pulses/s in the BAS 100B/W. The rate of change from the DAC is controlled
by allowing only a fraction of the clock pulses to reach the DAC. The allowed
Scan Rates
(for mV/s) are calculated from the equation shown below and
some values are listed in Table 10-1. If the entered scan rate is between two
values, the higher scan rate will be used.
2.048 x 10
6
pulses/s x 0.1 mV/pulse =
Scan Rate
(mV/s)
Frequency divisor
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