Pickering 40-781 User manual

pickeringtest.com
Issue 2.3 June 2021
40-781 User Manual
PXI Terminated Microwave SPDT Relay Modules

Page (II) PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
Page (II) REED RELAY MODULE 40-110/115/120/125
pickering
© COPYRIGHT (2021) 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.
ISO 9001
Reg No. FM38792

Page (III)
PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
Page (III)
REED RELAY MODULE 40-110/115/120/125
pickering
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 full 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.
Worldwide Technical Support and Product Information
pickeringtest.com
Germany
Tel: [phone]
E-mail: [email protected]
Sweden
Tel: [phone]
E-mail: [email protected]
USA
Tel: (West) [phone]
Tel: (East) [phone]
E-mail: [email protected]
Czech Republic
Tel: [phone]
E-mail: [email protected]
France
Tel [phone]
E-mail [email protected]
Pickering Interfaces Headquarters
Stephenson Road Clacton-on-Sea CO15 4NL United Kingdom
Tel: [phone]
E-Mail: [email protected]
China
Tel: [phone]
E-mail: [email protected]

Page (IV) PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
Page (IV) REED RELAY MODULE 40-110/115/120/125
pickering
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
PRODUCT SAFETY
The following safety symbols may be used on the product and throughout the product documentation.

Page (V)
PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
Copyright Statement ...................................................................II
Technical Support and Warranty................................................III
Product Safety .............................................................................IV
Contents (this page)....................................................................V
Warnings and Cautions ..............................................................VII
Section 1
Technical Specication...............................................................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 Modules ............4.2
Module Architecture..............................................................4.2
Programming the Module .....................................................4.3
Section 5
Connector Information................................................................5.1
Connector Layout..................................................................5.1
Section 6
Trouble Shooting.........................................................................6.1
Section 7
Maintenance Information............................................................7.1
CONTENTS

Page (VI) PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
THIS PAGE INTENTIONALLY BLANK

Page (VII)
PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
Page (VII)
REED RELAY MODULE 40-110/115/120/125
pickering
WARNINGS AND CAUTIONS
WARNING - HAZARDOUS ENVIRONMENTS SYMBOL
atmospheres. If the product is to be used in hazardous environments we recommend that the user
ensures suitable protective measures are taken.
!
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 host 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 - 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:
1. 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.
2. 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.
3. Outer clothing worn must be unable to generate static charges.
4.
anti-static bags.
CAUTION - PRODUCT DOCUMENTATION SYMBOL
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 (VIII) PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
THIS PAGE INTENTIONALLY BLANK

Page 1.1
PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
pickeringtest.com
PXI Terminated SPDT Microwave Relay Modules 40-781
ISSUE 2.1 MAY 2021
y1 or 2 Changeover Relays Per Module
yInternal or External Termination
y50 Ω Characteristic Impedance
y18 GHz Bandwidth
yLED Indication
yVISA, IVI & Kernel Drivers Supplied for
Windows
ySupported by PXI or LXI Chassis
y3 Year Warranty
The 40-781 Microwave switching module consists of one, or
two changeover switches capable of switching frequencies
to 18 GHz in 50 Ω. It is available with either internal or
external terminations and connections are made via front
panel mounted high quality SMA coaxial connectors.
The externally terminated versions have the advantage
that the terminations can be removed and replaced with
RF loads capable of handling higher power. 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.
These modules give you the highest RF and microwave
switching performance available within a Pickering
40-781 Single Changeover
Relay, Internal Terminations
NC
Com
NO
SPDT Switch 1
NC
Com
NO
SPDT Switch 1
NC
Com
NO
NC
Com
NO
SPDT Switch 1
SPDT Switch 2
NC
Com
NO
NC
Com
NO
SPDT Switch 1
SPDT Switch 2
40-781 Dual Changeover
Relay, Internal Terminations
40-781 Dual Changeover
Relay, External Terminations 40-781 Single Changeover
Relay, External Terminations
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 for lower frequency
applications where power handling to 240 W (without
termination) is required.

Page 1.2 PXI TERMINATED SPDT MICROWAVE RELAY 40-781
pickering
SECTION 1 - TECHNICAL SPECIFICATION
Terminated SPDT Microwave Relay, 40-781
pickeringtest.com
Specifications
1 2 3 4
STATE 1
(DEFAULT)
1 2 3 4
STATE 2
2 3 4 5
STATE 1
(DEFAULT)
2 3 4 5
STATE 2
1
1
40-781-12x Configured as a Terminated 4-Port Bypass
Switch (With One External Termination Removed)
40-781-12x Configured as a 5-Port DP3T Switch
(With Both External Terminations Removed)
Switching Specification
Configuration: SPDT Microwave Switch
with automatic termination
on the NO and NC paths,
1 or 2 independent banks.
LED Indicators: Blue LEDs to indicate
activated relays.
Operate Time: 10 ms
Characteristic Impedance: 50 Ω
Connectors: SMA
Maximum Frequency: 18 GHz
Expected Life
40-781-1xx:
40-781-0xx:
>10 million operations
>2 million operations
RF Specification
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