Keithley 7017, Инструкция по эксплуатации

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Operation
3-5
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.
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
IN 4
IN 5
IN 6
OUT B
IN 7
IN 8
IN 1
IN 2
OUT A
IN 3
IN 4
Model 7017 #1
Model 7017 #2
Instrument
Note: This configuration maintains
50
Ω
characteristic impedance.
Figure 3-2
Maintaining 50
Ω
characteristic impedance