Agilent Technologies L4445A Manuale utente

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 indi-

cation 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 Y1150A-

Y1155A 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 advan-

tage of the remote capabilities

and distribute your tests world-

wide. Monitor, troubleshoot, or

debug your application remotely.

Ethernet communication also

can be used with the support

of LAN sockets connections.

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 instru-

ments into your system — even

if your system includes instru-

ments 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 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

additional security.

Software for most popular

programming environments

Full support for standard pro-

gramming environments

ensures compatibility and effi-

ciency. You can use direct I/O

with the software you already

have and know, or use standard

IVI and LabVIEWTM software

drivers that provide compati-

bility 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®

Figure 1. The Web interface makes it easy to set up, troubleshoot and maintain

your test remotely

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

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 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 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

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 system1Windows®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®

1Load I/O Libraries Version M for Windows NT support or version 14.0 for Windows 98 SE support

Product Specifications (continued)

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 distribu-

tion 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 speci-

fied, 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.

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/55A-

supplies to build 2 cables

Other accessories

Y1160A

Rack mount kit for

L4400 series instruments-

racks 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.

Printed in USA, May 17, 2007

5989-4828EN

Related Agilent literature

Data Sheets

5988-6302EN

Agilent VEE Pro

5989-1441EN

Agilent W1140A-TKT

T&M Toolkit 2.0 with

Test Automation

5989-1439EN

Agilent E2094N

I/O Libraries Suite 14

5989-2272EN

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