Mainframe Multiplexer Expansion - Keithley 7021 Instruction Manual

Multiplexer Configuration
1
1
2
Rows
3
4
5
5x6 Matrix
Notes: 1. Models 7021 and 7022 backplane jumpers must be
removed from rows 2 and 4.
2. Model 7021 bank-to-bank jumpers must be removed.
Figure 2-12
Mixed card type example

Mainframe multiplexer expansion

Twelve- or 60-card multiplexer systems are possible by
connecting six Model 7001 or six Model 7002 mainframes,
respectively. Each Model 7021 added to the system provides
30 additional inputs. The limits on the number of cards in the
Model 7001/7002 switch system are due to triggering.
Section 4 explains how to connect a test system using two
mainframes.
2-8
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Card 1
7022
Columns
2 3 4 5 6
Card 2
7021
Inputs
1 26
6 11 16 21
22
2 7 12 17 27
3 8 13 18 23 28
4 9 14 19 24 29
5 10 15 20 25 30
Dual 1x12 and 1x18 Mux
Bank A
Bank B