74
Rear panel I/O
AZURA® Detector ECD 2.1 Instructions, V6685
Fig. 62
Top: CONFIG screen. Bottom: ECD 2.1 signal processing from elec-
trochemical flow cell to output. R is a selectable I/E resistor of 100M,
10M, 1M, 100K or 1K in the I/E converter circuit.
The output parameter Vout source can also be selected/set using Dialo-
gue Elite. Go to the device settings menu and Acquisition tab and set the
analogue output to DAC or I/E converter. The instrument is by default set
to DAC. For regular measurements it is advised to use the DAC output.
Fig. 63
Dialogue Elite Acquisition tab analog Output setting.
DAC output
The DAC output is the processed signal by the ECD 2.1’s CPU and is iden-
tical to that of the digital cell current signal obtained via data-acquisition
over LAN using the Elite Dialogue or the ClarityChrom® chromatography
software.
The signal in mV from this output is directly related to the range setting of
the ECD 2.1. So for example in the case the 200 µA measurement range
is selected ‘Range = 200 µA’ the DAC signal on the analog data connec-
tor corresponds with +1000 mV = +200 µA and -1000 mV = -200 µA (so
+/- 1V full scale). To convert the signal in mV to the actual cell current in
nA use the following calculation:
T e m p
=
3 5 °
C
C o n t
r
a s t
=
2 0
C O N F I
G
V a l
v e =
P r
e s e n t
V o u t
s o u r
c e =
D A C
I
D 1
m a s t
e r
=
n o
P R E V
I
O
Summary of Contents for Azura ECD 2.1
Page 1: ...HPLC Detector ECD 2 1 Instructions Document No V6685 ...
Page 32: ...28 ECD 2 1 controller AZURA Detector ECD 2 1 Instructions V6685 Pulse mode ...
Page 33: ...29 ECD 2 1 controller AZURA Detector ECD 2 1 Instructions V6685 Scan mode CONFIC menu ...
Page 34: ...30 ECD 2 1 controller AZURA Detector ECD 2 1 Instructions V6685 DIAG menu ...
