Specifications

Overview of 34945A/L4445
RF/Microwave/Attenuator Driver
The 34945A/L4445A Microwave
Switch/Attenuator driver is
designed to support virtually
any RF/Microwave switch or
attenuator. The two products
make it especially easy to
control and monitor Agilent’s
most popular RF/Microwave
switches and attenuators.
Agilent provides a wide range
of discrete RF/Microwave
switches and attenuators
that meet very high standards
of performance: High Isolation,
High Repeatability, Low
VSWR, Low Insertion Loss,
and Very Long Life.
The RF/Microwave
Switch/Attenuator Driver
Each L4445A or 34945A
plug-in module connects to a
34945EXT extender module
through a standard 9-pin
D-sub datacomm cable. Each
34945EXT extender module
uses up to four 34945EXT
distribution boards (Y1150A-
Y1155A) for connecting directly
to external switches. Up to
seven more 34945EXT extender
modules can be daisy-chained
(from one 34945EXT to the next)
using a standard RJ-45 cable.
The 34945A/L4445A can
supply 24 V power to the first
34945EXT through the 9-pin
D-sub cable. This allows driving
common 24 V RF/Microwave
switches and attenuators directly
without the need for an external
power supply. Each daisy-chained
34945EXT extender module
requires power from an external
power supply. A total of eight
34945EXT extender modules
are supported in a single 34980A
mainframe. This can be a single
34945A and eight 34945EXT
extenders, or it could be eight
34945As each with a single
34945EXT. You can also build
any combination in between. The
example below shows the use
of the 34980A and the L4445A.
5
34945A Plug-in Module
34980A
34945EXT
extender holds
4 distribution boards
L4445A
LXI Module