Pickering 4-781A Series Manual de usuario
Page (ii)
© Copyright (2023) Pickering Interfaces. All Rights Reserved.
No part of this publication may be reproduced, transmitted, transcribed, translated or stored in any form, or by any
means without the written permission of Pickering Interfaces.
Technical details contained within this publication are subject to change without notice.
FM38792
Page (iii)
Worldwide Technical Support and Product Information
Pickering Interfaces Headquarters
Stephenson Road, Clacton-on-Sea, CO15 4NL United Kingdom
Tel: +44 (0)1255-687900
e-mail: [email protected]
USA
Tel: (West) +1 541 471 0700
Tel: (East) +1 781 897 1710
e-mail: ussales@pickeringtest.com
France
Tel +33 9 72 58 77 00
e-mail: [email protected]
Germany
Tel: +49 89 125 953 160
e-mail: [email protected]
Sweden
Tel: +46 340-69 06 69
e-mail: [email protected]
Czech Republic
Tel: +420 558 987 613
e-mail: [email protected]
China
Tel: +86 4008 799 765
e-mail: [email protected]
Technical Support
For Technical Support please contact Pickering Interfaces either by phone, the website or via e-mail.
Warranty
All products manufactured by Pickering Interfaces are warranted against defective materials and workmanship for a period
of three years, excluding programmable power supplies, from the date of delivery to the original purchaser. Any product
found to be defective within this period will, at the discretion of Pickering Interfaces be repaired or replaced.
Products serviced and repaired outside of the warranty period are warranted for ninety days.
Extended warranty and service are available. Please contact Pickering Interfaces by phone, the website or via e-mail.
Environmental Policy
Pickering Interfaces operates under an environmental management system similar to ISO 14001.
Pickering Interfaces strives to fulfil all relevant environmental laws and regulations and reduce wastes and releases to the
environment. Pickering Interfaces aims to design and operate products in a way that protects the environment and the health
and safety of its employees, customers and the public. Pickering Interfaces endeavours to develop and manufacture products
that can be produced, distributed, used and recycled, or disposed of, in a safe and environmentally friendly manner.
Page (iv)
Meaning/Description Symbol
PROTECTIVE EARTH (GROUND)
To identify any terminal which is intended for connection to an
external conductor for protection against electric shock in case of a
fault, or the terminal of a protective earth (ground) electrode.
DANGEROUS VOLTAGE
To indicate hazards arising from dangerous voltages.
WARNING/CAUTION
An appropriate safety instruction should be followed or caution to a
potential hazard exists.
Refer to the relevant instructions detailed within the product
manual.
HEAVY
If this product is heavy reference should be made to the safety
instructions for provisions of lifting and moving.
STATIC SENSITIVE
To indicate that static sensitive devices are present and handling
precautions should be followed.
!
kg
Safety Symbols
The following safety symbols may be used on the product and throughout the product documentation.
Product Safety
Page (v)
Contents
Copyright Statement........................................................................................................................................................(ii)
Technical Support and Warranty...................................................................................................................................(iii)
Product Safety...................................................................................................................................................................(iv)
Contents (this page).........................................................................................................................................................(v)
Warnings and Cautions...................................................................................................................................................(vi)
Section 1
Technical Specification....................................................................................................................................................1.1
Section 2
Technical Description ......................................................................................................................................................2.1
Functional Description...............................................................................................................................................2.1
Section 3
Installation.........................................................................................................................................................................3.1
Pre Operation Checks ................................................................................................................................................3.1
Hardware Installation................................................................................................................................................3.2
Software Installation..................................................................................................................................................3.2
Testing Operation........................................................................................................................................................3.3
Section 4
Programming Guide.........................................................................................................................................................4.1
Programming Options for Pickering PXI/PXIe Modules......................................................................................4.1
Module Architecture...................................................................................................................................................4.2
Programming the Module.........................................................................................................................................4.4
Using Pickering Drivers in LabVIEW.......................................................................................................................4.6
Section 5
Connector Information .....................................................................................................................................................5.1
Section 6
Trouble Shooting..............................................................................................................................................................6.1
Section 7
Maintenance Information................................................................................................................................................7.1
Appendix A
Part Number List......................................................................................................................................... A.1
Page (vi)
WARNING - Hazardous Environments Symbol
This product is not specifically designed for use in hazardous environments, for example in explosive
atmospheres. If the product is to be used in hazardous environments we recommend that the user ensures
suitable protective measures are taken.
!
CAUTION - Handling of Electrostatic-Sensitive Devices Symbol
Certain semiconductor devices used in this equipment are liable to damage due to static voltage. Observe the
following precautions when handling these devices in their unterminated state, or sub-assemblies containing
these devices:
• Persons removing sub-assemblies from equipment using these devices must be earthed by a wrist strap
and a resistor at the point provided on the equipment.
• Soldering irons used during the repair operations must be low voltage types with earthed tips and isolated
from the mains voltage by a double insulated transformer.
• Outer clothing worn must be unable to generate static charges.
• Printed Circuit Boards (PCBs) fitted with these devices must be stored and transported in anti-static bags.
Warnings & Cautions
WARNING - Danger of Electric Shock Symbol
This module may contain hazardous voltages. Before removing the module from the rack remove all supplies
and disconnect user I/O signals.
Unused slots in the PXI/PXIe/LXI chassis are populated with blanking plates to prevent access to user I/O
signals that may be present. Blanking panels are available to order from Pickering in a variety of slot widths.
If the product is not used in this manner for example by using an extender card then additional care must be
taken to avoid contact with exposed signals.
CAUTION - Product Documentation Symbol
Suitably qualified & trained users should ensure that the accompanying documentation is fully read and
understood before attempting to install or operate the product.
!
Safety Instructions
Safety Instructions
All cleaning and servicing requires the equipment to be isolated and disconnected from the power source and user I/O signals
(refer to the Maintenance Section).
• Appropriate manual handling procedures should be followed as dictated by the weight of the individual module or the
combined weight of the modules & chassis.
• Should a fault occur with the module or chassis, immediately isolate and disconnect the incoming power to the chassis and
the user I/O signals.
• Ensure the equipment is installed, operated and maintained by trained and authorised personnel.
• For suitably equipped products in the event of an emergency press the red “emergency stop” button situated on the front of
the unit.
Page 1.1 pickeringtest.com
Section 1 - Technical Specification
The 40-781A (PXI) and 42-781A (PXIe) modules consist of one,
or two microwave changeover switches capable of switching
up to 50 GHz in 50 Ω. They are available with either internal
or external terminations and connections are via front panel
mounted high quality SMA, SMA 2.9 or SMA 2.4 connectors.
Externally terminated versions have the advantage that the
terminations can be removed and replaced with higher power
RF loads. This also allows alternative configurations such as
terminated 4-port bypass (1 termination removed) and 5-port
DP3T (both terminations removed). See overleaf for diagrams
of these configurations.
yAvailable as PXI or PXIe Modules
y1 or 2 Changeover Relays Per Module
yRemote Mounted Version Available
yInternal or External Termination
y50 Ω Characteristic Impedance
y18 GHz, 26.5 GHz, 40 GHz & 50 GHz Bandwidths
yFailsafe & Latching Relay Options
yRelay Cycle Counting Included
yLED Indication (Failsafe Versions Only)
yDrivers Supplied for Windows & Linux,
Plus Support for Real-time Systems
yPXI Version Supported by PXI or LXI Chassis
y3 Year Warranty
Microwave Switch (Part No. 4x-781A-xx1)
in Single SPDT Format
PXI Dual SPDT Microwave
Switch with Internal
Termination
The 4x-781A gives you the highest RF switching performance
available within a Pickering switching system. Although
designed for microwave applications, they have many uses
in the RF spectrum where extremely low insertion loss and
ultra high isolation are critical. They may also be used at
lower frequencies where power handling to 240 W (without
termination) is required.
Remote Versions
The remote versions, as well as occupying less panel space
in the case of the dual options, allow the microwave relays
to be placed closer to the UUT and RF test equipment.
This can shorten the length of cables and improve system
performance. Remote switches are supplied with a 1.5 m
interface cable.
NC
Com
NO
SPDT Switch
NC
Com
NO
SPDT Switch
Internally Terminated Externally Terminated
Remote version controls
1 or 2 remotely mounted
SPDT microwave relays via
interface cables
pickeringtest.com
4x-781A
PXI/PXIe Terminated SPDT Microwave Relays
Issue 4.0 September 2023
Page 1.2 pickeringtest.com
Section 1 - Technical Specification
Product Compatibility
The 4x-781A range has been introduced as an update to the
existing 40-781 family. These remain orderable but the new
4x-781A is recommended as it provides additional options such
as the PXIe control interface. The RF performance of the 4x-781A
is identical to the 40-781.
Relay Type
To provide maximum flexibility this range is available with either
failsafe or latching relays. For definition, the contacts of failsafe
relays return to the default state when the system power is
removed whereas latching relay contacts retain their last set
state when the power is removed.
Relay Cycle Counting
To aid with module “health” monitoring all versions are
provided with a relay cycle counting cycle feature. The number
of operations per contact are stored on the module and can be
used to determine if a relay is approaching EOL. This information
could allow system connections to be revised so that signals
applied to heavily used contacts are swapped with lightly used
contacts to prolong the working life of the relay(s).
NC
Com
NO
NC
Com
NO
SPDT Switch 1
SPDT Switch 2
NC
Com
NO
NC
Com
NO
SPDT Switch 1
SPDT Switch 2
Microwave Switch (Part No. 4x-781A-xx2)
in Dual SPDT Format
Internally Terminated Externally Terminated
2 3 4 5
State 1 (Default)
2 3 4 5
State 2
1
1
1 2 3 4
State 1 (Default)
1 2 3 4
State 2
Configured as a Terminated
4-Port Bypass Switch
(With One External
Termination Removed)
Configured as a
5-Port DP3T Switch
(With Both External
Terminations Removed)
Alternative Configurations for Externally
Terminated Versions
pickering
BANK 1
Remotely Mounted Microwave
SPDT Terminated Relays
2 off Interface
Cables 1.5m Length
40/42-781A
Remote
Version
BANK 2
Remotely Mounted Microwave Relay Versions
Interconnection Between 4x-781A
Remote Version and Remotely
Mounted Microwave Relays
Microwave SPDT
Terminated Relay &
Cable for Remote
Mounting
4x-781A
pickeringtest.com Page 2
PXI/PXIe Terminated SPDT Microwave Relays
Page 1.3 pickeringtest.com
Section 1 - Technical Specification
Specifications - 18GHz Versions
Characteristic Impedance: 50 Ω
Connector Type: SMA
Insertion Loss: <0.2 dB to 3 GHz
<0.3 dB to 8 GHz
<0.4 dB to 12.4 GHz
<0.5 dB to 18 GHz
Isolation: >80 dB to 3 GHz
>70 dB to 8 GHz
>60 dB to 18 GHz
VSWR: <1.2:1 0 to 3 GHz
<1.3:1 to 8 GHz
<1.4:1 to 12.4 GHz
<1.5:1 to 18 GHz
Power Handling - Externally
Terminated Versions:
1 W limited by terminations.
Note: External terminations can be removed and replaced
with higher power loads.
Power Handling - Internally
Terminated Versions:
1 W limited by terminations.
RF Average Carry Power
at 25 °C:
240 W to 3 GHz
150 W to 8 GHz
120 W to 12.4 GHz
100 W to 18 GHz
Operate Time: 10 ms
Expected Life
40/42-781A-1xx:
40/42-781A-0xx:
>10 million operations
>2 million operations
Typical Isolation - 18 GHz Versions
Typical Insertion Loss - 18 GHz Versions
Typical VSWR - 18 GHz Versions
4x-781A
pickeringtest.com Page 3
Specifications
Page 1.4 pickeringtest.com
Section 1 - Technical Specification
Specifications - 26.5GHz Versions
Characteristic Impedance: 50 Ω
Connector Type: SMA
Insertion Loss: <0.2 dB to 3 GHz
<0.3 dB to 8 GHz
<0.4 dB to 12.4 GHz
<0.5 dB to 18 GHz
<0.7 dB to 26.5 GHz
Isolation: >80 dB to 3 GHz
>70 dB to 8 GHz
>60 dB to 12.4 GHz
>60 dB to 18 GHz
>55 dB to 26.5 GHz
VSWR: <1.2:1 0 to 3 GHz
<1.3:1 to 8 GHz
<1.4:1 to 12.4 GHz
<1.5:1 to 18 GHz
<1.7:1 to 26.5 GHz
Power Handling - Externally
Terminated Versions:
1 W limited by terminations.
Note: External terminations can be removed and replaced
with higher power loads.
Power Handling - Internally
Terminated Versions:
1 W limited by terminations.
RF Average Carry Power
at 25 °C:
240 W to 3 GHz
150 W to 8 GHz
120 W to 12.4 GHz
100 W to 18 GHz
40 W to 26.5 GHz
Operate Time: 10 ms
Expected Life
40/42-781A-3xx:
40/42-781A-2xx:
>10 million operations
>2 million operations
Typical Isolation - 26.5 GHz Versions
Typical Insertion Loss - 26.5 GHz Versions
Typical VSWR - 26.5 GHz Versions
4x-781A
pickeringtest.com Page 4
Specifications
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