Figure; Maintaining 50 Ω Characteristic Impedance; Matrix Connections - Keithley 7017 Instruction Manual

Maintaining 50 Ω characteristic impedance
The proper method for connecting two Model 7017 multiplex-
ers together is shown in Figure 3-2. Here, the A and B outputs
of one Model 7017 are connected to two inputs of multiplexer
A of a second Model 7017 card. With this configuration, the
proper 50 Ω characteristic impedance is maintained for opti-
mum bandwidth and minimal signal loss and reflections.
Model 7017 #1

Figure 3-2

Maintaining 50 Ω characteristic impedance
IN 1
IN 2
OUT A
IN 3
IN 4
IN 5
IN 6
OUT B
IN 7
IN 8

Matrix connections

A 4 × 4 matrix may be formed by connecting the two out-
puts together using a short coaxial cable, as shown in Figure
3-3. Note that this connection scheme provides a convenient
way to connect four DUTs to four different test instruments.
This method also maintains the proper 50 Ω characteristic
impedance.
IN 1
IN 2
OUT A
IN 3
Note: This configuration maintains
50Ω characteristic impedance.
IN 4
Model 7017 #2
Operation
Instrument
3-5