Agilent Technologies Switch U2121A 101 User Manual

Agilent U2121A-101 RF  
Switch Driver Board  
Operating Guide  
Agilent Technologies  
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Safety Symbols  
The following symbols on the instrument and in the documentation  
indicate precautions, which must be taken to maintain safe operation of  
the instrument.  
Equipment protected throughout by  
double insulation or reinforced  
insulation  
Direct current (DC)  
Alternating current (AC)  
Off (supply)  
Both direct and alternating current  
Three-phase alternating current  
Earth (ground) terminal  
On (supply)  
Caution, risk of electric shock  
Caution, risk of danger (refer to this  
manual for specific Warning or Caution  
information)  
Protective conductor terminal  
Caution, hot surface  
Frame or chassis terminal  
Equipotentiality  
Out position of a bi-stable push control  
In position of a bi-stable push control  
U2121A-101 Operating Guide  
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General Safety Information  
• Do not load the output terminals above the specified current limits.  
• Do not use the device if it appears damaged or defective.  
• Observe all markings on the device before connecting any wiring to  
the device.  
WARNING  
• Do no operate the device in the presence of flammable gases or  
fumes.  
• Do no install substitute parts or perform any unauthorized  
modification to the device.  
Applying excessive voltage or overloading the device will cause  
irreversible damage to the circuitry.  
CAUTION  
Use the device with the cables provided.  
Repair or service that is not covered in this manual should only be  
performed by qualified personnels.  
To avoid ESD damage to the RF switch driver board, users are highly  
recommended to comply with the following cautions:  
User are required to discharge themselves to any large metal object  
(e.g. Shelf, desk, etc.) prior to operating the RF switch driver board.  
Operate the RF switch driver board under an ESD protected workstation,  
with the minimum requirements of using wrist strap (connected to ground)  
and ESD pad. The wrist strap can be grounded by connecting to the power  
supply ground and/or circuit board ground.  
Avoid human body contact or a charged material to the on-board components  
and circuitries. Always hold the board edges when carrying the RF switch driver  
board.  
IV  
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Environmental Conditions  
This instrument is designed for indoor use and in an area with low  
condensation. The table below shows the general environmental  
requirements for this instrument.  
Environmental conditions  
Operating temperature  
Storage temperature  
Operating humidity  
Requirements  
0 °C to 40 °C  
–40 °C to 70 °C  
Up to 85% at 40 °C (non-condensing)  
5% to 90% RH (non-condensing)  
Storage humidity  
The U2121A-101 RF switch driver board complies with the following safety  
and EMC requirements.  
CAUTION  
IEC 61326-2002/EN 61326:1997+A1:1998+A2:2001+A3:2003  
Canada: ICES-001:2004  
Australia/New Zealand: AS/NZS CISPR11:2004  
IEC 61010-1:2001/EN 61010-1:2001 (2nd edition)  
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Regulatory Markings  
The C-tick mark is a registered  
trademark of the Spectrum  
The CE mark is a registered trademark  
Management Agency of Australia.  
This signifies compliance with  
the Australia EMC Framework  
regulations under the terms of the  
Radio Communication Act of 1992.  
of the European Community. This CE  
mark shows that the product complies  
with all the relevant European Legal  
Directives.  
This instrument complies with the  
WEEE Directive (2002/96/EC)  
marking requirement. This affixed  
product label indicates that you must  
not discard this electrical/electronic  
product in domestic household waste.  
ICES/NMB-001 indicates that this  
ISM device complies with the  
Canadian ICES-001.  
Cet appareil ISM est confomre a la  
norme NMB-001 du Canada.  
This symbod indicates that a device,  
or part of a device, may be susceptible  
to electrostatic discharges (ESD),  
which can result in damage to the  
product. Observe ESD precautions  
given on the product, or its user  
documentation, when handling  
equipment bearing this mark.  
VI  
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Waste Electrical and Electronic Equipment (WEEE) Directive  
2002/96/EC  
This instrument complies with the WEEE Directive (2002/96/EC) marking  
requirement. This affixed product label indicates that you must not discard  
this electrical/electronic product in domestic household waste.  
Product Category:  
With reference to the equipment types in the WEEE directive Annex 1, this  
instrument is classified as a “Monitoring and Control Instrument” product.  
The affixed product label is shown as below.  
Do not dispose in domestic household waste  
To return this unwanted instrument, contact your nearest Agilent  
Technologies, or visit:  
for more information.  
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DECLARATION OF CONFORMITY  
According to EN ISO/IEC 17050-1:2004  
Generic example  
Manufacturer’s Name:  
Manufacturer’s Address:  
Agilent Technologies Microwave Products (M) Sdn. Bhd  
Bayan Lepas Free Industrial Zone,  
11900, Bayan Lepas, Penang, Malaysia  
Declares under sole responsibility that the product as originally delivered  
Product Name:  
Models Number:  
Product Options:  
Agilent RF Switch Board  
U2931A  
This declaration covers all options of the above product(s)  
complies with the essential requirements of the following applicable European Directives, and  
carries the CE marking accordingly:  
Low Voltage Directive (2006/95/EC)  
EMC Directive (2004/108/EC)  
and conforms with the following product standards:  
EMC  
Standard  
Limit  
IEC 61326:2002 / EN 61326:1997+A1:1998+A2:2001+A3:2003  
CISPR 11:1990 / EN55011:1990  
Class A Group 1  
4 kV CD, 8 kV AD  
3 V/m, 80-1000 MHz  
0.5 kV signal lines, 1 kV power lines  
0.5 kV line-line, 1 kV line-ground  
3 V, 0.15-80 MHz  
IEC 61000-4-2:1995 / EN 61000-4-2:1995  
IEC 61000-4-3:1995 / EN 61000-4-3:1996  
IEC 61000-4-4:1995 / EN 61000-4-4:1995  
IEC 61000-4-5:1995 / EN 61000-4-5:1995  
IEC 61000-4-6:1996 / EN 61000-4-6:1996  
IEC 61000-4-11:1994 / EN 61000-4-11:1994  
1 cycle / 100%  
Canada: ICES-001:2004  
Australia/New Zealand: AS/NZS CISPR11:2004  
The product was tested in a typical configuration with Agilent Technologies test systems.  
IEC 61010-1:2001 / EN 61010-1:2001  
Safety  
Additional Information:  
The U2931A receives power from an AC/DC power supply model DSA-60W-20 1 24060.  
This DoC applies to above-listed products placed on the EU market after:  
31-March-2008  
Date  
Tay Eng Su  
Quality Manager  
For further information, please contact your local Agilent Technologies sales office, agent or distributor,  
or Agilent Technologies Deutschland GmbH, Herrenberger Straße 130, 71034 Böblingen, Germany.  
Template: A5971-5302-2, Rev. E  
U2931A  
DoC Revision 1.0  
VIII  
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Product Regulations  
EMC  
Performance Criteria  
IEC 61326-1:2002 / EN 61326-1:1997+A1:1998+A2:2001+A3:2003  
CISPR 11:1990 / EN 55011:1990 – Group 1 Class A  
IEC 61000-4-2:1995 / EN 61000-4-2:1995 (ESD 4kV CD, 8kV AD)  
IEC 61000-4-3:1995 / EN 61000-4-3:1996 (3V/m, 80% AM)  
IEC 61000-4-4:1995 / EN 61000-4-4:1995 (EFT 0.5kV line-line, 1kV line-earth)  
IEC 61000-4-5:1995 / EN 61000-4-5:1995 (Surge 0.5kV line-line, 1kV line-earth)  
IEC 61000-4-6:1996 / EN 61000-4-6:1996 (3V, 0.15~80 MHz, 80% AM, power line)  
IEC 61000-4-11:1994 / EN 61000-4-11:1994 (Dips 1 cycle, 100%)  
Canada: ICES-001:2004  
A
A
A
A
A
A
Australia/New Zealand: AS/NZS CISPR11:2004  
IEC 61010-1:2001 / EN 61010-1:2001  
Safety  
Additional Information:  
The product herewith complies with the essential requirements of the Low Voltage Directive 2006/95/EC and the  
EMC Directive 2004/108/EC and carries the CE Marking accordingly (European Union).  
1Performance Criteria:  
A Pass - Normal operation, no effect.  
B Pass - Temporary degradation, self recoverable.  
C Pass - Temporary degradation, operator intervention required.  
D Fail - Not recoverable, component damage.  
N/A – Not applicable  
Notes:  
Regulatory Information for Canada  
ICES/NMB-001:2004  
This ISM device complies with Canadian ICES-001.  
Cet appareil ISM est confomre à la norme NMB-001 du Canada.  
Regulatory Information for Australia/New Zealand  
This ISM device complies with Australian/New Zealand AS/NZS CISPR11:2004  
U2121A-101 Operating Guide  
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Contents  
Introduction  
4
Product at a Glance  
Product outlook  
Installation Guide 10  
B. Install prerequisites and software 12  
C. Connect the hardware solution to your PC 14  
D. Launch the Agilent U2121A-Based RF Switch Driver Software 15  
Maintenance 23  
Disassemble Procedure 24  
Ordering Info 26  
Optional accessory 26  
Appendix A: Control Instructions 29  
Appendix B: Y1157A Cable Assembly Instructions 31  
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Introduction  
The Agilent U2121A- 101 (also known as U2931A) RF switch driver  
with cable is an adapter board designed for use with the Agilent  
U2121A digital IO device. It enables you to control various types of  
RF switches easily and has enhanced driving capability and consists  
of different types of connectors to suit different switches.  
The U2121A- 101 purchase consists of a driver interface module, an  
interface cable (equipped with a 37- pin D- sub connector on one end  
and four 10-way terminal block connectors on the other end), a  
10- pin to D- sub adapter, and a 24 VDC, 2.5 A power adapter. This  
module is connected to the U2121A using the provided interface  
[1]  
cable. You can also use the Y1157A cable, which is a 10- pin ribbon  
connector to 9- pin D- Sub cable kit for the Agilent N1810/11/12  
coaxial switches.  
This module is consists of five RF switch driver channels and one  
general IO terminal. Each channel is pre-programmed to drive three  
different types of Agilent RF switches. Only one type of RF switch  
can be connected to a single channel during operation.  
DO NOT connect different types of RF switches to the same channel during  
operating time.  
CAUTION  
The U2121A- 101 module is designed to handle 24 VDC switches.  
[1] Refer to Appendix B for Y1157A cable kit assembly.  
2
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Power supply  
The switches on this module are powered by the provided power  
adapter. There is only one power supply voltage available for this  
module, which is 24 VDC, 2.5 A.  
Power consumption  
The U2121A- 101 can drive up to 1500 mA continuously using the  
provided power supply. For each channel, it is able to drive up to 300  
mA load per switch. Precaution must be taken to ensure that the  
total current consumption on all channels is not more than 1500 mA,  
which is the maximum driving capability of the module.  
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Standard Purchase Items Checklist  
Verify that you have received the following items with your purchase.  
U2121A- 101 RF switch driver board with cable purchase. If anything is  
missing or damaged, please contact the nearest Agilent Sales Office.  
RF switch driver board  
RF switch driver board interface  
U2931- 60013 10 ways IDC to 9- pins D- Sub adapter  
U2931- 60012 power adapter  
Agilent U2121A- 101 RF Switch Driver Board Operating Guide  
Agilent U2931A RF Switch Driver Product Reference CD- ROM  
4
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Product at a Glance  
Product outlook  
Top view (without casing)  
Connector for  
8765x-024 RF switches  
Connector for 8762/3/4  
8765x/324 RF switches  
Connector for  
general I/O  
Connector for  
general output  
Connector for  
general input  
DC power jack  
Power  
rating  
Digital IO  
terminal  
Connector for  
N181x RF switches  
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Product dimensions  
Top view (without casing)  
72.00 mm  
150.00 mm  
Top view (with casing)  
85.00 mm  
153.00 mm  
Front view (with casing)  
Side view (with casing)  
38.00 mm  
85.00 mm  
6
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Connector Pins Configuration  
Pin out configuration for all terminals  
Table 1 8762/2/3 and 8765x-324 Series switches (X1 to X5)  
Pin  
1
Function  
Position #1  
Position #2  
N.C.  
2
3
4
+24 V  
Table 2  
8765x-024 Series switches (SL1 to SL5)  
Pin  
1
Function  
Position #2  
N.C.  
2
3
+24 V  
4
+24 V  
5
Position #1  
Table 3  
N181X Series switches (SV1 to SV5)  
Pin  
1
Function  
GND  
Pin  
2
Function  
+5 V  
3
N.C.  
4
Indicator B  
+5 V  
5
Position B  
Position A  
+24 V  
6
7
8
Indicator A  
N.C.  
9
10  
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IO mapping  
There are three main control bits used in the U2121A- 101 as shown  
in tables below. These control bits also refers to the U2121A control  
bit status.  
Table 4  
Output enable/disable control  
Control Stage  
Output disabled  
Output enabled  
Control Bit, DO14  
OFF (0)  
Description  
To disable all outputs in U2121A- 101  
To enable all outputs in U2121A- 101  
ON (0)  
Table 5  
Position information read back control  
RF Switches  
Control Bit  
D16  
Description  
D15  
8765x and 8762/3/4 OFF (0)  
ON (1)  
Read position information from 8765x and  
8762/3/4 series switches  
N181x  
ON (1)  
OFF (0)  
Read position information from N181x  
series switches  
DO NOT set both D15 and D16 control bits to ON stage!  
WARNING  
8
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Each of the five RF switch channels uses two digital output pins and  
two digital input pins during the operation.  
Table 6a IO mapping for 8762/3/4, 8765x-324 and N181x Series RF switches  
Channel  
Control Bit  
Position Bit  
State A  
O1  
State B  
O2  
State A  
State B  
1
I1  
I3  
I5  
I7  
I9  
I2  
I4  
2
O3  
O4  
3
O5  
O6  
I6  
4
O7  
O8  
I8  
5
O9  
O10  
I10  
General IO  
O11, O12 & O13  
I11, I12 & I13  
Table 6b IO mapping for 8765x-024 Series RF switches  
Channel  
Control Bit  
Position Bit  
State A  
O2  
State B  
O1  
State A  
State B  
1
I2  
I4  
I1  
I3  
I5  
I7  
I9  
2
O4  
O3  
3
O6  
O5  
I6  
4
O8  
O7  
I8  
5
O10  
O9  
I10  
General IO  
O11, O12 & O13  
I11, I12 & I13  
Table 7  
Position indicator stage definition  
RF Switches Model  
8732/3/4 Series and 875x Series  
N181x Series  
Activated  
OFF (0)  
Deactivated  
ON (1)  
ON (1)  
OFF (0)  
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Installation Guide  
Follow the step- by-step instructions shown in the following flowchart  
to get started with the preparations and installations of your Agilent  
U2121A- Based RF Switch Driver Software.  
You need to install the IVI-COM driver if you are going to use the U2121A- 101  
with Agilent VEE Pro, LabVIEW, or Microsoft Visual Studio .  
NOTE  
®
®
A. Check your system  
B. Install prerequisites and software  
C. Connect the hardware solution to your PC  
D. Launch the Agilent U2121A-Based RF  
Switch Driver Software  
10  
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A. Check your system  
Prior to any installation or configuration, please ensure that your PC  
meets the following minimum system requirements.  
Hardware requirements  
Hardware required Specification (minimum)  
Processor  
1.6 GHz Pentium® IV or higher  
Operating System  
Windows® XP Professional or Home Edition (Service Pack  
1 or later), or Windows® 2000 Professional (Service Pack  
4 or later)  
Video  
1024×768 recommended  
Browser  
Microsoft® Internet Explorer 5.01 or higher (6.0 or higher  
recommended)  
Available RAM  
128 MB or higher (256 MB or higher recommended)  
1 GB required for installation  
Hard Disk Space  
Software requirements  
Software required  
Version (minimum)  
[1]  
Agilent VEE Pro Runtime  
Agilent U2121 IVI Driver  
Version 8.5  
[1]  
Version 1.0.9.0  
[2]  
Agilent IO Libraries Suite  
Version 15.0  
or higher  
®
[1]  
Microsoft .NET Framework Version 1.1 and 2.0  
®
Agilent IO Libraries Suite 15.0 is required if your PC is running on Microsoft  
Windows Vista™ 32-bit operating system.  
NOTE  
[1] Bundled with Agilent U2121A-Based RF Switch Driver Software installer.  
[2] Obtained from Agilent Automation-Ready CD.  
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B. Install prerequisites and software  
There are two options you may choose from to install the  
prerequisites and Agilent U2121A-Based RF Switch Driver Software.  
You may choose to install from the provided Product Reference  
CD-ROM or obtain the installation software from Agilent's website to  
install the software.  
Prior to installing the prerequisites and Agilent U2121-Based RF Switch Driver  
Software, ensure that your PC meets the minimum system requirements for  
installation and operation processes.  
NOTE  
Installing the application software from CD  
1 Disconnect any instrument that is connected to your PC and close  
all other applications on your PC.  
2 Insert the Product Reference CD- ROM into your CD- ROM drive.  
3 The installer will automatically launch the Agilent U2121A- Based  
Installation Menu. Click Application to begin installation of the  
following items:  
i
Microsoft .NET Framework 2.0  
ii Agilent VEE Pro 8.5 Runtime  
iii Agilent U2121 IVI Driver  
iv Agilent U2121A- Based RF Switch Driver Software  
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4 If the installation menu does not appear after a few seconds, go to  
Start > Run and type <drive>:\Application\setup.exe where  
<drive> is your CD- ROM drive location.  
5 Click OK to begin the installation of the following items.  
6 If you do not have any of the prerequisites installed, the  
InstallShield Wizard software prerequisite will appear.  
7 Click OK to begin the installation of the listed missing  
prerequisites.  
8 Once the above installation has completed, installation of the  
U2121A- Based RF Switch Driver Software will proceed as normal.  
9 The Agilent RF Switch Driver InstallShield Wizard dialog will appear.  
Click Next to begin.  
10 Read the License Agreement and select I accept the terms in the License  
Agreement to proceed. You may click Print to print a hardcopy of the  
Agilent License Terms for your reference. Click Next to proceed.  
11 Fill in the Customer Information Form accordingly, and click Next.  
12 Click Next to install to the specified folder or click Change to install  
to a different folder.  
13 Click Install to begin the installation of the U2121A- Based RF  
Switch Driver Software.  
14 Click Finish when the installation has completed.  
15 A shortcut to this software will be created to your desktop.  
USING THE LICENSED MATERIALS INDICATES YOUR ACCEPTANCE OF THE  
LICENSE TERMS. IF YOU DO NOT AGREE TO ALL OF THESE TERMS, YOU  
MAY RETURN ANY UNOPENED LICENSED MATERIAL FOR A FULL REFUND,  
IF THE LICENSED MATERIALS ARE BUNDLED OR PRE-LOADED WITH  
ANOTHER PRODUCT, YOU MAY RETURN THE ENTIRE UNUSED PRODUCT  
FOR A FULL REFUND.  
NOTE  
Downloading the application software from the Web  
1 Go to http://www.agilent.com/find/DIOsolution/, and download the  
Agilent U2121A- Based RF Switch Driver Software.  
2 Save the file to any location on your hard disk.  
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3 Disconnect any instrument that is connected to your PC and close  
all other applications on your PC.  
4 Double- click the saved installation file to begin installation.  
5 If you do not have any of the prerequisites installed, the InstallShield  
Wizard software prerequisite will appear.  
6 Click OK to begin the installation of the listed missing  
prerequisites.  
7 Once the above installation has completed, installation of the  
Agilent U21210A- BAsed RF Switch Driver Software will proceed as  
normal.  
8 Follow the instructions on your screen to begin the installation.  
9 Click Finish once the installation has completed.  
C. Connect the hardware solution to your PC  
1 Connect the U2121A- 101 board digital IO terminal to the U2121A  
terminal block using the interface cable.  
2 Connect the power adapter to the RF switch driver board’s DC  
power jack.  
3 Connect the RF switches as below:  
[1]  
i
For 8762/3/4 and 8765x- 324 RF switches, connect to any SL1  
[1]  
to SL5  
slot.  
[2]  
[2]  
ii For 8765x- 024 RF switches, connect to any X1 to X5  
slot.  
slot.  
[3]  
[3]  
iii For N181x RF switches, connect to any SV1  
to SV5  
Connect only one type of the RF switch to one channel. Do not use multiple  
switches simultaneously on one channel.  
NOTE  
[4]  
[5]  
[6]  
4 Connect other types of load to general IO, X7  
or X8  
and X9  
if required. The load voltage is 24 VDC. The maximum load should  
not exceed 300 mA per output channel and 3 mA per input  
channel.  
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The total allowable current is 1500 mA. Please ensure that the total current  
consumption is not more than 1500 mA.  
WARNING  
[1] SL1 to SL5 refers to the 8762/3/4 and 8765x-324 RF switch connectors for Ch1 to Ch5.  
[2] X1 to X5 refers to the 8765x-024 RF switch connectors for Ch1 to Ch5.  
[3] SV1 to SV5 refers to the N181x RF switch connectors for Ch1 to Ch5.  
[4] X7 refers to the connector for general I/O on the switch driver board.  
[5] X8 refers to the connector for general output on the switch driver board.  
[6] X9 refers to the connector for general input on the switch driver board.  
D. Launch the Agilent U2121A-Based RF Switch Driver  
Software  
Before you proceed, ensure that your system meets the minimum system  
requirements.  
NOTE  
1 Before attempting to start- up your U2121A- Based RF Switch Driver  
Software, it is recommended to follow the step- by- steps  
instructions below.  
2 Plug in your instrument via the supported USB socket.  
3 Go to Start > All Programs > Agilent IO Libraries Suite > Agilent Connection  
Expert to launch the Connection Expert.  
4 The detected U2121A will be visible on the Instrument I/O on this PC  
explorer pane. Right- click on the U2121A instrument on the  
explorer pane.  
5 A context menu will appear as shown below. Select Send Commands  
To This Instrument.  
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6 The Agilent Interactive IO dialog box will appear. Click Send & Read  
to send the *IDN? default command. The instrument’s response  
should appear in the Instrument Session History panel.  
7 If the Connection Expert can successfully communicate with the  
U2121A, this indicates that the instrument has been installed  
correctly.  
The IO Control will launch automatically when you start your PC.  
NOTE  
Launching the VEE without the IO Control running will cause failure of the  
VEE to detect or establish any connection with the U2121A connected to  
your PC.  
To run the IO Control, go to Start > All Programs > Agilent IO Libraries  
Suite > Utilities > IO Control.  
16  
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8 Double- click Agilent U2121A-Based RF Switch Driver Software icon on  
your desktop or go to Start > All Programs > Agilent U2121A-Based RF  
Switch Driver > U2121A-Based RF Switch Driver Software to launch the  
software.  
9 The U2121A- Based RF Switch Driver Software screen will appear.  
10 To start the application, click on the Start button. The Select USB  
Device dialog box will appear displaying the connected U2121A  
devices. Select a U2121A device and click on it to establish the  
connection.  
11 Select the switch type corresponding to the connected switch on  
each channel.  
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12 Use the toggle paddle for each channel in the program to select  
respective switch position.  
13 Use the checkbox and the Send Output button in the General Output  
section to control the output devices connected to the RF switches.  
14 To view the General Input Status, click the Refresh Input Status Bits  
button in the General Input section.  
15 Click Exit to leave the program, all switches will be disabled upon  
exiting the program.  
Refer to the Agilent U2121A-Based RF Switch Driver Software Help File for more  
information.  
NOTE  
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Supported Switches  
The U2121A- 101A supports three types of Agilent RF switches as  
shown in Table 9. User can choose to drive the same switches in all  
five channels or a mixture of three switches for five channels.  
However, only one type of switch can be used in a channel at a time.  
Do not use multiple types of switches in the same channel.  
Drive modes  
The RF switch driver board drives the switches using the open  
collector drive method. It provides a current path to the ground when  
asserted.  
H
DO  
Channel  
L
Drive activated  
Continuous Drive  
Continuous drive method controls the switches by activating the  
control bit and holds it until it is disabled. This mode will have a  
consistent current draw when the switch is activated.  
Output  
enable  
Drive ChA  
Drive active  
Drive ChB  
Drive active  
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Pulse drive  
Pulse drive method controls the switches using a ~30 ms pulse. As  
shown in the figure below, the control signal is applied to one of the  
control bit and held for the preset time.  
Output  
enable  
Drive ChA  
Drive active  
Drive ChB  
Drive active  
General IO  
There are three digital outputs and three digital inputs available in  
the U2121A- 101 as an auxiliary port. These three output pins are  
capable to drive up to 300 mA of load. The digital input pin has a  
direct connection to the U2121A.  
Controlled supply  
Output  
From U2121A DO  
Input  
To U2121A DI  
Output circuit  
Input circuit  
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Product Characteristics and Specifications  
Table 8  
General characteristics of the U2121A-101 RF switch driver board  
General Characteristics  
Power consumption  
+24 VDC, 2.5 A  
Isolated ELV supply source  
Operating environment  
Storage temperature  
Operating humidity  
Storage humidity  
EMC  
0 °C to 40 °C  
–40 °C to 70 °C  
Up to 85% at 40 °C (non-condensing)  
5% to 90% RH (non-condensing)  
IEC61326-2002/EN61326:1997+A1:1998+A2:2001+A3:2003  
Canada: ICES-001:2004  
Australia/New Zealand: AS/NZS CISPR11:2004  
Safety  
IEC 61010-1:2001/EN 61010-1:2001 (2nd edition)  
300 mA (max)  
Driving current per channel  
Total current  
1500 mA (max)  
IO channels for RF switch  
Generic IO  
5 channels  
3 digital inputs and 3 digital outputs  
150 mm x 72 mm  
Board dimension (W x D)  
Casing dimension (W x D x H)  
Weight  
153 mm x 85 mm x 38 mm  
With casing: 146 g  
Without casing: 86 g  
Warranty  
One year  
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Table 9  
Type of switches supported by U2121A-101 RF switch driver board  
Switch/Attenuator  
Reference  
Coil Voltage  
Connection Type  
Drive Options  
Document No.  
Agilent N1810/11/12 Coaxial Switches  
N1810UL/TL  
N1811TL  
N1812TL  
Option 124  
24 VDC  
Option 201  
D-Sub 9-pin female  
Option 402  
Position Indicators  
5968-9653E  
Agilent 8762/63/64 Coaxial Switches  
8762A/B/C/F  
8763A/B/C  
8764A/B/C  
Option 024  
24 VDC  
STD  
5952-1873E  
Solder Lugs  
Direct coil for open drain  
Agilent Microwave SPDT Switches  
Option 324  
24VDC  
STD  
8765A/B/C/D  
8765A/B/C/D  
5952-2231E  
5952-2231E  
Solder Terminals  
Direct coil for open drain  
Option 024  
24 VDC  
STD  
Ribbon cable terminated  
with single in-line  
Direct coil for open drain  
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Maintenance  
1 Power off your device, unplug the DC power jack and remove the  
RF switch driver board interface cable from your device.  
2 Remove your device from the plastic casing.  
3 Shake out any dirt that may have accumulated on the RF switch  
driver board.  
4 Wipe your RF switch driver board with a dry cloth and install the  
plastic casing back in place.  
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Disassemble Procedure  
The following steps shows the disassemble procedure of the RF switch  
driver board from its casing.  
1 Remove the two screws on either side of the board.  
2 Remove the side panel from the casing.  
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3 Remove the PCA from the casing.  
4 The disassembled RF switch driver board is shown below.  
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Ordering Info  
To order the U2931A RF switch driver, please select the U2121A and  
U2121A–101 ordering options. This will include the U2121A digital IO  
device and U2121A–101 RF switch driver board and cable. You can  
also order the U2931A RF switch driver board as a standalone unit  
by choosing the U2931A–101 ordering option.  
Table 10 RF switch driver board ordering options  
Ordering Option  
(with U2121A)  
Ordering Option  
(as standalone)  
Description  
1
2
U2931A101  
U2931A102  
U2121A101 RF switch driver board  
U2121A-01  
U2121A101 RF switch driver board cable  
Optional accessory  
Table 11 RF switch driver board optional accessory  
Ordering Options  
Description  
1
Y1157A  
9-to-10 pin extension cable for N181x — supplies to build 4 cables  
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Appendix A: Control Instructions  
The COM driver minimum system requirements are as shown below.  
Minimum System Requirements  
PC hardware  
450 MHz Pentium II or higher, 128 MB RAM, 40 GB hard disk  
space, CD-ROM drive.  
®
Operating system  
Windows XP Professional or Home Edition, Service Pack 1 or  
®
later, Windows 2000 Professional, Service Pack 4 or later.  
Software driver  
IVI-COM  
Compatible with  
programming  
environments  
Agilent VEE  
®
Microsoft Visual Studio.NET, C/C++  
®
Microsoft Visual Basic 6/7  
LabVIEW  
Please adhere to the following instructions strictly to create the COM  
driver.  
To read digital input information.  
1 When reading digital input, set the desired channel to ON (1) and  
then read the target bit. Set the channel back to OFF (0) when the  
information has been read.  
2 Do not activate both Ch15 and Ch16 at the same time because this  
will cause an excessive current flow; which will result in a sudden  
temperature increase in the buffer IC and regulator IC.  
Prolonged exposure to increased temperature will cause overheating in your buffer IC  
and regulator IC.  
NOTE  
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To set digital output.  
1 To enable digital output control, set Ch14 to ON (1).  
2 For channel 1 to channel 5, only activated one bit at a time. Do  
not activate both bits together because this will damage your RF  
switches.  
3 Some RF switches will need pulse current control instead of  
continuous current control. Please refer to the respective RF  
switches' datasheets for more information. The wrong control  
method will lead to RF switch damage.  
Prolonged exposure to a continuous supplied current will cause overheating in  
your RF switch. Please ensure your devices temperatures are constantly  
monitored when supplying continuous current.  
NOTE  
Refer to the Agilent U2121A-Based RF Switch Driver COM Object Help File for  
more information.  
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Appendix B: Y1157A Cable Assembly Instructions  
The Y1157A is a 10- pin ribbon connector to 9- pin D- Sub cable kit  
which contains materials to build four cables.  
The key to building the cables correctly is to understand the  
orientation of the socket pins on the distribution boards and the pin  
number orientation of the cable connectors. This orientation is shown  
in Figure B- 1. When using the D- sub connector, always refer to the  
pin orientation shown in Figure B- 1. Do not use the pin numbers  
printed on the part.  
Distribution board  
connector (10-pin)  
Ribbon connector (10-pin)  
D-Sub connector (9-pin)  
Figure B-1 Distribution board socket and Y1157A cable connector Orientation  
The steps for building the cables are as follows:  
1 Cut the ribbon cable slightly longer than the desired length.  
2 Position the D- Sub connector and the ribbon cable connector as  
shown in Figure B- 2. Route the cable through the connectors,  
noting the location of cable pin 1. By convention, pin 1 is indicated  
in red (the dark line in the drawing).  
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Pin 1 of ribbon cable  
Strain relief  
Align connector contacts  
over cable lines  
“Press” until metal contacts are no longer  
visible (same for D-Sub connector)  
Figure B-2 Y1157A connector orientation and ribbon cable routing  
3 Move the connectors to the ends of the cable, allowing for some  
overlap on the D- Sub connector end and strain relief on the ribbon  
cable connector end. Note the orientation of the connectors and  
cable in Figure B- 2.  
4 Align the metal contacts of the ribbon connector over cable pin 1  
(Figure B- 2) and the other pins, press the ribbon cable connector  
onto the cable using a vise or clamp to press the contacts evenly  
through the cable insulation. Continue to press the connector until  
the metal contacts are no longer visible.  
5 Fasten the strain relief clamp over the cable and into the ribbon  
cable connector as shown in Figure B- 2. Remove any excess cable  
after the clamp is in place.  
6 Align the metal contacts of the D- Sub connector over cable pin 1  
and the other pins, press the D- Sub connector onto the cable using  
a vise or clamp to press the contacts evenly through the cable  
insulation. Continue to press the connector until the metal contacts  
are no longer visible. Remove any excess cable after the connector  
is in place.  
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Contact us  
To obtain service, warranty or technical  
assistance, contact us at the following  
phone or fax numbers:  
United States:  
(tel) 800 829 4444  
Canada:  
(tel) 877 894 4414  
China:  
(tel) 800 810 0189  
Europe:  
(fax) 800 829 4433  
(fax) 800 746 4866  
(fax) 800 820 2816  
(tel) 31 20 547 2111  
Japan:  
(tel) (81) 426 56 7832 (fax) (81) 426 56  
7840  
Korea:  
(tel) (080) 769 0800  
Latin America:  
(tel) (305) 269 7500  
Taiwan:  
(fax) (080) 769 0900  
(tel) 0800 047 866  
(fax) 0800 286 331  
Other Asia Pacific Countries:  
(tel) (65) 6375 8100  
(fax) (65) 6755 0042  
Or visit Agilent World Wide Web at:  
Product specifications and descriptions in  
this document are subject to change  
without notice. Always refer to Agilent web  
site for the latest revision.  
© Agilent Technologies, Inc. 2008  
Printed in Malaysia  
Second Edition, June 6, 2008  
U2931-90001  
Agilent Technologies  
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