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Agilent L4445A   
Microwave Switch/Attenuator Driver  

Data Sheet

• LXI compliance includes 

built-in Ethernet connectivity 

• Fully-featured graphical 

Web interface

• Control of most popular 

microwave switches and 
attenuators

• Expandable with 34945EXT

• Distribution boards allow 

for easy wiring

• Switch read-back capabilities

• External power option 

for simultaneous switching

• Software drivers for 

most common programming 
environments

Microwave switch/attenuator 
driver offers support of most 
common microwave switches 
with distribution boards for 
easy configuration 

The Agilent L4445A is a LXI
Class C compliant instrument
that controls external switches
and attenuators. With its small
size and Ethernet connectivity,
the switch/attenuator driver
can be placed wherever your
application needs it.  

The Agilent L4445A provides
digital outputs to control
switches, attenuators, and
other devices that are typically
used to route signals in a high
frequency system. Many of the
most popular microwave switches

and attenuators are supported
through the distribution boards.
The distribution boards enable
fast and easy connection to the
microwave devices. 

Using this LXI instrument, you’ll
get all the benefits of an Ethernet
connection, instrument Web
server, standard software drivers
and more. The LXI standard is
supported by multiple vendors,
enabling lower cost of test with
accelerated test integration and
development. 

Agilent Technologies

Summary of Contents for L4445A

Page 1: ... that controls external switches and attenuators With its small size and Ethernet connectivity the switch attenuator driver can be placed wherever your application needs it The Agilent L4445A provides digital outputs to control switches attenuators and other devices that are typically used to route signals in a high frequency system Many of the most popular microwave switches and attenuators are s...

Page 2: ...945EXT and are used to route the power and control signals from the driver to the switches using user supplied cables This enables simple connections to the external switches without a lot of complicated wiring The following microwave switches and attenuators are supported with the Y1150A Y1155A distribution boards N181x U9397x series SPDT switches 8762 3 4 series SPDT switches screw terminals 876...

Page 3: ...CPI commands Define and execute switch sequences View error queue Get status reports on relay cycle counts firmware revisions and more Additionally since the Web server is built into the instru ment you can access it on any operating system that supports the Web browser without having to install any special software Password protection and LAN lockout are also provided to limit access for addition...

Page 4: ...ce switching wherever your application needs it Power button Status LEDs 9 pin cable Y1150A Y1155A distribution boards ordered separately User supplied switches and cables 34945EXT extender holds 4 distribution boards ...

Page 5: ...x 0 8 V Hi input voltage min 2 5 V Input resistance 100 kΩ Vin 5 V 20 kΩ Vin 5 V Maximum input voltage 30 V 34945EXT switch drive power supply 34945EXT powered by 34945A Voltage 24 V nominal external power supply required for switches needing different voltages Current 100 mA continuous 200 mA 15 ms pulse 25 duty cycle 34945EXT external power connection Voltage range 4 75 V to 30 V Current limit 2...

Page 6: ...ng Environment Full accuracy for 0 C to 55 C Full accuracy to 80 R H at 40 C Storage environment 40 C to 70 C Dimensions H x W x L 40 9 x 212 3 x 379 3 mm 1 61 x 8 36 x 14 93 in 34945EXT dimensions 38 1 x 114 3 x 284 5 mm 1 5 x 4 5 x 11 2 in with distribution boards installed Weight 3 6 kg 8 0 lbs Safety conforms to CSA UL IEC EN 61010 1 EMC conforms to IEC EN 61326 1 CISPR 11 Warranty 1 year 6 Pr...

Page 7: ...00BaseTx Optional IEEE 488 2 GPIB Software driver support for programming languages Software drivers IVI C and IVI COM for Windows NT 2000 XP LabVIEW Compatible with programming tools and environments Agilent VEE Pro T M Toolkit reqs Visual Studio NET National Instruments TestStand Measurement Studio LabWindows CVI LabVIEW Switch Executive Microsoft Visual Studio NET C C Visual Basic 6 1 Load I O ...

Page 8: ...itches qty 8 N1810UL DC 20 GHz SPDT Switches qty 1 L4445A Switch Attenuator Driver when ordering the L4445A the 34945EXT is automatically added for controlling switches qty 2 Y1152A Distribution Boards qty1 Y1150A Distribution Board Either build own cables using off the shelf parts or order qty 1 Y1159A 16 to 16 pin connect kit supplies for 2 cables and qty 2 Y1157A 9 to 10 pin cable kit supplies ...

Page 9: ... distribution board for one 87204x 206x or 87606B switch and two N181x switches Y1153A 34945EXT distribution board for two 84904 5 6 7 8 or 8494 5 6 step attenuators Y1154A 34945EXT distribution board for two 87222 transfer switches and six N181x SPDT switches Y1155A 34945A distribution board w generic screw terminals for driving 16 switch coils Cable kits for connecting switches to distribution b...

Page 10: ... assistance onsite education and training as well as design system integration and project management For more information on repair and calibration services go to www agilent com find removealldoubt www agilent com For more information on Agilent Technologies products applications or services please contact your local Agilent office The complete list is available at www agilent com find contactus...

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