Chapter 2
Setting Up
25
Multiple Front-ends
Multiple front-ends can be connected up to a PowerLab. The number
that can be connected depends on the number of inputs on the
PowerLab. The initial front-end should be connected as shown in
Figure 2–1. The remainder are daisy-chained via I
2
C cables,
connecting the I
2
C output of the last connected front-end to the I
2
C
input of the next front-end to be added, as shown in Figure 2–2. The
BNC cable for each front-end is connected to one of the inputs of the
PowerLab (except where otherwise specified).
PowerLab I
2
C output
Front-end I
2
C input
I
2
C connector cable
BNC connector cable
Front-end signal output
PowerLab I
2
C output
Front-end I
2
C inputs
Front-end I
2
C output
Figure 2–2
Connecting multiple
front-ends to the PowerLab
(two single front-ends
shown for simplicity)
Figure 2–1
Connecting a front-end to
the PowerLab: a PowerLab
has only one I
2
C output,
and each front-end has one
I
2
C output and one I
2
C input
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