Chapter 7 -- Auxiliary Electrometer Option--Connections Using Custom Cables
7 - 3
Table 7-1
AE Cable Connections
Pin
Type Name Wire Color
Connector
Color
Normal Connection
1 Analog Input Odd Ch - Black Yellow Low side of odd channel
reference side
2 Analog Input Odd Ch + Black Purple High side of odd channel
working side
3 Ground Floating Ground
-- --
4 Analog Input Even Ch - Red Yellow Low side of even channel
reference side
5 Analog Input Even Ch + Red Purple High side of even channel
working side
6 Ground Floating Ground
-- --
7 Digital input !Cable Ground if cable present
8 Digital In !Power On Ground if AE powered
9 Ground Floating Ground
Note that pins 8 and 9 must be grounded on any cable that will be used to take voltage readings.
The analog inputs are both labeled (with labels on the wires) and color coded. The wires are black for odd
numbered channels (Channel 1,3, 5, and 7) and red for the even numbered channels (Channels 2, 4 ,6 and 8).
The working side plug (the positive input) is purple, and the reference side (the negative input) is yellow.
Connections Using Custom Cables
The user can build custom cables for AE connections. Follow the pin designations in the table above. Pins 7
and 8 must be grounded.
AE Specifications
See Appendix E.