Appendix G: Optional Interface 5000 Monitor Board--Introduction
81
Caution:
Voltages outside the
AUX IN
range of ±5 V could damage the Reference 3000
circuitry.
Appendix G: Optional Interface 5000 Monitor Board
Introduction
In order to monitor various different signals, you
will need the Interface 5000 Monitor Board. This is
an optional accessory that allows you to observe
several different input signals, including an auxiliary
input, among others.
Connectors
There are six connectors on the Interface 5000
Monitor Board:
EXT SIG IN
The
EXT SIG IN
BNC connector allows you to add a
voltage to the Interface 5000’s signal generator. This
signal is summed with the other signal-generator
sources, including the IR DAC, the Scan DAC, and the DDS output.
The outer shell of the BNC is connected to the Interface
5000’s floating ground.
The signal generator output is usually directly connected to the potentiostat’s input. When the cell is turned on
in potentiostat mode, the feedback is such that a negative signal-generator output creates a positive differential
electrometer signal, which corresponds to a negative working electrode versus reference electrode voltage.
The polarity of the
EXT SIG IN
signal is inverted at the signal generator’s output. As described above, a negative
input signal on this BNC creates a positive change in the working electrode versus reference electrode voltage.
The input impedance of this signal is 3 k
Ω
in parallel with 15 pF.
AUX IN
The
AUX IN
BNC connector allows you to measure a voltage from outside the Interface 5000 using the
Interface 5000’s internal A/D. The scaling is
3 V in equals
30 000 A/D counts. This is a resolution of 100 µV
per bit. The results are reported in volts. The input is differential (see Appendix D).
The allowed input voltage range is
5 V.
Consult Appendix D for additional information concerning this connector.
Caution:
The shell of the
EXT SIG IN
BNC is connected to the Interface 5000
’s Floating
Ground. Connection of this BNC to a piece of earth-ground-referenced equipment can compromise the
Interface 5000
’s ability to float
, and invalidate data collected on earth-grounded cells.
Summary of Contents for Interface 5000
Page 2: ...2 ...
Page 18: ...Introduction 18 ...
Page 30: ...Installation 30 ...
Page 36: ...Calibration 36 ...
Page 64: ...Appendix A Interface 5000 Specifications 64 ...
Page 72: ...Appendix D Power LED Blink Codes and Error Messages 72 ...
Page 74: ...Appendix E CE Certificate Declaration of Conformity 74 Low Voltage Certificate of Conformance ...
Page 75: ...Appendix E CE Certificate Declaration of Conformity 75 RFI Certificate of Conformance ...
Page 76: ...Appendix E CE Certificate Declaration of Conformity 76 ...
Page 80: ...Appendix F Heat in Interface 5000 Multichannel Systems Interface Power Hub Systems 80 ...
Page 85: ......
