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Analog Bus
Optional Terminal
Cards
12 Configuring the Agilent E8462A Multiplexer
Tree relays T0 through T21 (Channel 9000 through Channel 9021) con-
figure the module to the desired operating mode: 1-wire, 2-wire, 3-wire or
4-wire mode. You use the tree relays to manually configure this module in
one of the following configurations (or in a combination of these configur-
ations). Using the ROUTe:FUNCtion command sets the tree switches
automatically for any one of the following configurations (e.g., 2-64x2).
Quantity
Relays AB200 through AB204 (Channels 9200 through 9204) are the analog
bus connection control relays which connect the terminal busses to the front
panel analog bus connector.
The "Analog Bus Front Panel Connector" on the module allows you to
connect this Multiplexer to to a VXI Multimeter (such as the Agilent
E1411B and/or E1326B) directly. Either of these Multimeter's allow you to
configure the Multimeter and one or more E8462A Multiplexers in a
"Scanning Voltmeter" configuration. See Chapter 4 for information on
using the E8462A in a scanning voltmeter.
The E8462A has three optional terminal cards which you may purchase
from Agilent Technologies:
•
Option 012 Crimp & Insert Terminal Card is provided with the same
terminal connector described above but does not provide the
crimp-and-insert contacts. Additionally, you must order the quantity of
contacts your application requires. This terminal card provides strain
relief and a housing to protect the contacts. Refer to Option 012
Crimp-and- Insert Terminal Block on page 24.
•
Option 014 Fault Tolerant Terminal Card and Option 015 Ribbon
Cable Terminal Card provides nine ribbon-cable header connectors
(P101-P109). P101 through P108 contain 16 terminals (Ter0 through
Ter15) and all the 256 channels (CH000-CH255) and P109 is the
analog bus connector. Option 014 has PTC resistors; Option 015 does
not. Refer to Option 014 Fault Tolerant Terminal Block on page 24.
Switch Topology
1
256 x 1or
128 x 2 or
64 x 3 or
64 x 4
2
128 x 1 or
64 x 2 or
32 x 4
4
64 x 1 or
32 x 2 or
16 x 4
8
32 x 1 or
16 x 2
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