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Chapter 7 Plug-in Modules
N2268A 50Ω 3.5 GHz Dual 1-to-4 MUX Module
7
N2268A 50
Ω
3.5 GHz Dual 1-to-4 MUX Module
The Agilent N2268A consists of two, independent, 1-to-4 MUX switches
(GROUP 00 and GROUP 10) that provide bidirectional switching. The
latching relays in this module are configured in a “tree” structure to
provide isolation and low VSWR (voltage standing wave ratio). Each
channel in this module can switch up to 30 Vdc or peak ac at frequencies
from dc to 3.5 GHz.
Specifications for the N2268A are given on page 319.
N2268A Simplified Schematic
A simplified schematic is shown on the next page. The N2268A contains
two 1-to-4 MUXs, designated as GROUP 00 and GROUP 10. The two
groups are isolated from each other. Each 1-to-4 multiplexer consists of
three form-C relays. A tree relay is connected to the common channel.
The two channel relays allow selection of one of the four channel in each
group. Channels in each group are break-before-make and are numbered
as 00 through 03 for GROUP 00 and 10 through 13 for GROUP 10.
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