3-5
3.6.3 1
×
8 mux configuration
The three banks of the Model 7038 can also be connected
together in the 1
×
8 mux configuration shown in Figure 3-3.
Here OUTA and OUTB are connected to IN9 and IN10 of
bank C using the supplied CA-193-1A jumpers. IN1 through
IN8 are the eight mux inputs, while OUTC is the 1
×
8 mux
output. Note that IN11 and IN12 are not used with this
configuration.
Aside from providing a 1
×
8 mux, there are a couple other
advantages to using this configuration. For one thing, the
characteristic impedence is always maintained at 75
Ω
. Sec-
ondly, it is possible to have all channels effectively open sim-
ply by selecting an unused channel (IN11 in Figure 3-3).
IN1
IN2
IN3
IN4
OUTA
IN5
IN6
IN7
IN8
OUTB
IN9
IN10
IN11
IN12
OUTC
Model 7038
1 x 8 Mux
Output
Eight Mux
Inputs
CA-193-1A
Jumpers
Figure 3-3
1
×
8 multiplexer configuration
Содержание 7038
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