Agilent Technologies L4445A User Manual

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
Microwave switch driver for easy routing of high frequency signals in your system
The L4445A allows you to control switches, attenuators and other devices close to your device under test. The L4445A combined with the 34945EXT provides the power and control signals to drive up to 64 switch coils—that’s 32 standard SPDT switches.
The L4445A can be extended by adding additional 34945EXT extenders. The first 34945EXT is powered by the L4445A. You can add up to seven additional 34945EXT extenders with user supplied power. Multiple switch operations are performed in sequential order, or for faster, simultaneous switching, you can connect an external power supply to the 34945EXT.
The digital outputs can also be used to drive LEDs for indi­cation of the switch position. The L4445A/34945EXT also has digital inputs so that you can read back the actual position of the switch or attenuator.
The L4445A comes with a standard 9-pin connector for simple connection to the 34945EXT. The Y1150A-Y1155A distribution boards plug onto the 34945EXT 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 Y1150A­Y1155A distribution boards:
• N181x/U9397x series SPDT switches
• 8762/3/4 series SPDT switches (screw terminals)
• 8765x coaxial switches
• 8766x/8767x/8768x multiport switches
• 87104x/106x/L710xx/L720xx multiport switches
• 87406x series matrix switches
• 87204x/206x series multiport switches
• 87606x series matrix switches
• 87222x/L7222 transfer switches
• 849x series attenuators
• 8490x series attenuators
• Screw terminal connections
Ethernet connectivity enables simple connection to the network and remote access to measurements
The Ethernet interface offers high-speed connections that allow for remote access and control. You can set up a private network to filter out unwanted LAN traffic and speed up the I/O throughput, or take advan­tage of the remote capabilities and distribute your tests world­wide. Monitor, troubleshoot, or debug your application remotely. Ethernet communication also can be used with the support of LAN sockets connections.
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The optional GPIB interface has many years of proven reliability and can be used for easy integration into existing applications.
The L4445A ships with the Agilent E2094 I/O Libraries Suite making it easy for you to configure and integrate instru­ments into your system — even if your system includes instru­ments from multiple vendors.
Fully-featured graphical Web interface makes it easy to set-up and troubleshoot your tests from anywhere in the world
The built-in Web browser interface provides remote access and control of the instrument via a Java-enabled browser such as Internet Explorer. Using the Web interface, you can set up, troubleshoot, and maintain your instrument from remote locations.
• View and modify instrument setup
• Configure switch channels and switch pairs
• Open or close switches
• Send, receive and view SCPI 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 instru­ment, 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 additional security.
Software for most popular programming environments
Full support for standard pro­gramming environments ensures compatibility and effi­ciency. You can use direct I/O with the software you already have and know, or use standard
IVI and LabVIEWTMsoftware drivers that provide compati­bility with the most popular development environments:
• Agilent T&M Toolkit for Microsoft Visual Studio®.NET and Agilent VEE Pro
• National Instruments LabVIEW, LabWindows/CVI, TestStand, and Switch Manager
• Microsoft C/C++® and Visual Basic®
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Figure 1. The Web interface makes it easy to set up, troubleshoot and maintain your test remotely
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High-performance 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
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Specifications and Characteristics
34945EXT switch drive
64 channels, low side drive mode Driver off voltage (max) 30 V
Driver off leakage current 500 uA Driver on current (max) 600 mA Driver on voltage (max) 0.5 V @ 600 mA
64 channels, TTL drive mode Hi output voltage 3 V @ Iout = 2 mA
Lo output voltage 0.4 V @ Iin = 20 mA Lo input current 20 mA
34945EXT position indicator sense inputs
Channels 64 Lo input voltage (max) 0.8 V Hi input voltage (min) 2.5 V Input resistance >100 k@ Vin 5 V
>20 k@ 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 A
LED indicator (Current mode divers)
Channels 64 Supply voltage 5 V nominal LED drive current 5 mA nominal
(prog 1-20 mA)
Driver compliance voltage 0.8 V
Maximum 8 34945Ext’s per L4445A
Product Specifications
Memory
States 5 instrument states with user label in non-volatile memory
General specifications
Power supply Universal 100 V to 240 V ±10%
Power line frequency 50 Hz to 60 Hz ±10% automatically sensed
Power consumption 15 VA
Operating 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
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Product Specifications (continued)
Software
Agilent connectivity Agilent I/O Libraries Suite 14 or greater (E2094N) software included
Minimum system requirements
PC hardware Intel Pentium 100 MHz, 64 Mbyte RAM, 210 Mbyte disk space
Display 800x600, 256 colors, CD-ROM drive
Operating system
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Windows®98 SE/NT/2000/XP
Computer interfaces
Standard LAN 10BaseT/100BaseTx
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®
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Load I/O Libraries Version M for Windows NT support or version 14.0 for Windows 98 SE support
Product Specifications (continued)
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Ordering information
Example configuration:
A test system is being built that requires the following Microwave Switching:
• (qty 2) Agilent 87206B SP6T Switches
• (qty 8) Agilent N1810UL SPDT Switches
Select the quantity of distribu­tion boards for the required switches using the ordering info below:
• Qty 2 Y1152A Distribution boards to control qty 2 87206B switches.
• Qty 1 Y1150A Distribution board to control qty 8 N1810UL switches.
Notice that each Y1152A can also drive two N181x switches. Therefore if you only needed to drive 4 N1810 switches, then you could have controlled those switches via the Y1152A distribution boards already selected.
Here is the final recommended configuration:
• (qty 2) 87206B DC-20 GHz SP6T Switches
• (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 for 4 cables).
We recommend that the switch be ordered with options for 24 V coils, position indicators, and socket connectors. Since 24 V latching relays are speci­fied, there is no need for an external power supply. The L4445A instrument can provide power for a single 34945EXT. Easy-to-build ribbon cables can be built to interface each of the switches to the Y1150A and Y1152A distribution boards. See the Application note: Configuring an RF/ Microwave Switch System (5989-2272EN) for additional configuration details.
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Ordering information (Continued)
L4445A Microwave Switch/ Attenuator driver
Includes User’s guide on CD, test report, power cord, and Quick Start package
Option -GPIB
Adds GPIB interface
Option 0B0
Deletes printed manual set, full documentation included on CD ROM
Option ABA
English printed manual set
L4445A Accessories
Distribution boards are required for control of external switches. One 34945EXT external driver required for each 64 coils – holds 4 distribution boards per 34945EXT extender
Y1150A
34945EXT distribution board for 8 N181x SPDT switches
Y1151A
34945EXT distribution board for two 87104x/106x multiport or 87406B matrix switches
Y1152A
34945EXT 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 boards:
Y1157A
9-to-10 pin cable kit for Y1150A, Y1152A, Y1154A ­supplies to build 4 cables
Y1158A
10-to-10/10-to-14 pin cable kit for Y1153A, Y1154A ­supplies to build 2 cables
Y1159A
16-to-16 pin cable kit for Y1150A/51A/52A/53A/54A/55A­supplies to build 2 cables
Other accessories
Y1160A Rack mount kit for L4400 series instruments­racks 2 instruments side-by-side with sliding tray
For additional information please visit:
http://www.agilent.com/find/L4445A
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Revised: May 7, 2007
Product specifications and descriptions in this document subject to change without notice.
© Agilent Technologies, Inc. 2007 Printed in USA, May 17, 2007 5989-4828EN
Related Agilent literature
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5988-6302EN
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5989-1441EN
Agilent W1140A-TKT
T&M Toolkit 2.0 with Test Automation
5989-1439EN
Agilent E2094N I/O Libraries Suite 14
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Configuring an RF/Microwave Switch System
Agilent Direct
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