Pickering 4 785C Series User manual

pickeringtest.com Issue 3.0, October 2023
PXI/PXIe Microwave Multiplexer Modules
4x-785C User Manual

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: [phone]
e-mail: [email protected]
USA
Tel: (West) [phone]
Tel: (East) [phone]
e-mail: [e-mail]
France
Tel [phone]
e-mail: [email protected]
Germany
Tel: [phone]
e-mail: [email protected]
Sweden
Tel: [phone]
e-mail: [email protected]
Czech Republic
Tel: [phone]
e-mail: [email protected]
China
Tel: [phone]
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
Mechanical Description .............................................................................................................................................2.2
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.........................................................................................................................................4.3
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

Page (vi)
Appendix A
Relay Dimensional Drawings.........................................................................................................................................A.1
Appendix B
Mounting Bracket Information.......................................................................................................................................B.1
Appendix C
Part Number List..............................................................................................................................................................C.1
Contents

Page (vii)
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 40-785C (PXI) and 42-785C (PXIe) range of PXI microwave
multiplexer modules are suitable for switching 50 Ω signals
up to 67 GHz. They are available in single or dual SP4T or
SP6T configurations with relays mounted on the front panel.
Remote versions are also available which can support up to
three multiplexers in a single slot.
The remote multiplexer versions, as well as occupying less
PXI panel space, 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 versions are supplied with a 1.5 m interface cable.
The panel mounted 50 Ω terminated version occupies 3 slots
for the single version or 6 slots for the dual version. A 75 Ω
version is available with a bandwidth of 2.5 GHz and uses
Siemens 1.6/5.6 style connectors.
yAvailable as PXI or PXIe Modules
ySingle or Dual SP4T or SP6T Panel Mounted Multiplexer
yUp To 3 Remote SP4T or SP6T Multiplexers From Single
Slot Version
y50 Ω Versions With 3-67 GHz Bandwidth
y50 Ω Terminated and Unterminated Versions
y75 Ω Version With 2.5 GHz Bandwidth
yRelay Cycle Counting Included
yLED Indication
yVISA, IVI & Kernel Drivers Supplied for Windows
yPXI Version Supported by PXI or LXI Chassis
y3 Year Warranty
Microwave Multiplexer (Part No. 4x-785C) in
Single Unterminated Format
3
4C
5
6
1
2
off
3C
4
1
2
off
Single Unterminated SP6TSingle Unterminated SP4T
Single slot version
controls 1, 2 or 3
remotely mounted
microwave
multiplexers via
interface cables
The 4x-785C range is suitable for constructing complex
microwave switching networks and includes configurations
to suit most applications. Connection is by high performance
SMA, SMA 2.9, SMA 2.4, SMA 1.85 or N-type for 50 Ω versions.
These modules give you the highest RF and microwave
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.
Product Compatibility
The 4x-785C range has been introduced as an update to the
existing 40-785B family. These remain orderable but the new
4x-785C is recommended as it provides additional options
such as the PXIe control interface. The RF performance of the
4x-785C is identical to the 40-785B.
pickeringtest.com
4x-785C
PXI/PXIe Microwave Multiplexer
Issue 3.0 October 2022

Page 1.2 pickeringtest.com
Section 1 - Technical Specification
3C
4
1
2
off
3C
4
1
2
off
MUX Bank 1
MUX Bank 2
3
4C
MUX Bank 1
5
6
1
2
off
3
4C
5
6
1
2
off
MUX Bank 2
3C
4
1
2
off
3C
4
1
2
off
MUX Bank 1
MUX Bank 2
3C
4
1
2
off
MUX Bank 3
3
4C
MUX Bank 1
5
6
1
2
off
3
4C
5
6
1
2
off
MUX Bank 2
3
4C
5
6
1
2
off
MUX Bank 3
Dual Unterminated SP6TDual Unterminated SP4T Triple Unterminated SP6TTriple Unterminated SP4T
3
C
6
1
2
off
Single Terminated SP6T
3
4
C
5
6
1
2
off
Single Terminated SP4T
3
C
6
1
2
off
Dual Terminated SP6T
3
4
C
5
6
1
2
off
Dual Terminated SP4T
3
C
6
1
2
off
3
4
C
5
6
1
2
off
MUX Bank 1
MUX Bank 2
MUX Bank 1
MUX Bank 2
3
C
6
1
2
off
Triple Terminated SP6T
3
4
C
5
6
1
2
off
Triple Terminated SP4T
3
C
6
1
2
off
3
4
C
5
6
1
2
off
MUX Bank 1
MUX Bank 2
MUX Bank 1
MUX Bank 2
3
C
6
1
2
off
3
4
C
5
6
1
2
off
MUX Bank 3 MUX Bank 3
4x-785C Terminated Multiplexer Range (triple versions are only available in remote mount format)
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).
4x-785C Unterminated Multiplexer Range (triple versions are only
available in remote mount format)
4x-785C
pickeringtest.com Page 2
PXI/PXIe Microwave Multiplexer

Page 1.3 pickeringtest.com
Section 1 - Technical Specification
pickering
MUX BANK 1
Remotely Mounted Microwave Multiplexers
3 off Interface Cables 1.5m Length
4x-785C
Single Slot
Version
MUX BANK 2MUX BANK 3
6 45
123
6 4
5
123
6 4
5
123
Interconnection Between 4x-785C Single Slot Version
and Remotely Mounted Microwave Multiplexers
Remote Mount Microwave Multiplexer (18-67 GHz) Range:
• Upper left, unterminated (all frequencies) relay.
• Upper right, terminated 26.5 GHz, 40 GHz or 50 GHz relay.
• Lower left, unterminated (all frequencies) relay mounted to optional bracket.
• Lower right, terminated 26.5 GHz, 40 GHz or 50 GHz relay mounted to optional bracket.
Remotely Mounted Microwave Multiplexer Versions
4x-785C
pickeringtest.com Page 3
PXI/PXIe Microwave Multiplexer

Page 1.4 pickeringtest.com
Section 1 - Technical Specification
General Multiplexer Information
Relay Manufacturer: Radiall
Configuration: SP6T or SP4T Microwave
MUX with 1, 2 or 3
independent banks.
LED Indicators: Multiplexers have blue LEDs
to indicate a closed RF path.
Operate Time: Typically 15 ms
Maximum Cold Switch
Voltage: 100 V
Maximum Carry Current: 1 A
3 GHz Unterminated & Terminated Versions
Characteristic Impedance: 50 Ω
Connectors: N-type
Bandwidth DC to 3 GHz
Isolation: 80 dB (0-3 GHz)
Insertion Loss: 0.2 dB (0-3 GHz)
VSWR: 1.2:1 (0-3 GHz)
Maximum RF Carry Power: 400 W (0-3 GHz)
Termination Power Rating: 1 W per termination,
3 W total per 6 channel
multiplexer.
Expected Life (Low Power): 3 GHz option,
>2 million operations
3 GHz terminated option,
>2 million operations
Typical VSWR - 3 GHz Terminated
& Unterminated Versions
Typical Isolation (dB) - 3 GHz Terminated &
Unterminated Versions
Typical Insertion Loss (dB) - 3 GHz Terminated &
Unterminated Versions
4x-785C
pickeringtest.com Page 4
Specifications

Page 1.5 pickeringtest.com
Section 1 - Technical Specification
18 GHz Unterminated & Terminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA
Bandwidth DC to 18 GHz
Isolation: 80 dB (0-3 GHz)
70 dB (3-8 GHz)
60 dB (8-12.4 GHz)
60 dB (12.4-18 GHz)
Insertion Loss: 0.2 dB (0-3 GHz)
0.3 dB (3-8 GHz)
0.4 dB (8-12.4 GHz)
0.5 dB (12.4-18 GHz)
VSWR: 1.2:1 (0-3 GHz)
1.3:1 (3-8 GHz)
1.4:1 (8-12.4 GHz)
1.5:1 (12.4-18 GHz)
Maximum RF Carry Power: 240 W (0-3 GHz)
150 W (3-8 GHz)
120 W (8-12.4 GHz)
100 W (12.4-18 GHz)
Termination Power Rating: 1 W per termination,
3 W total per 6 channel
multiplexer.
Expected Life (Low Power): 18 GHz option
>5 million operations
18 GHz terminated option
>2 million operations
Typical Insertion Loss (dB) - 18 GHz Terminated Versions
Typical VSWR -18 GHz Unterminated Versions
Typical Isolation (dB) - 18 GHz Unterminated Versions
Typical Insertion Loss (dB) - 18 GHz Unterminated Versions
Typical VSWR - 18 GHz Terminated Versions
Typical Isolation (dB) - 18 GHz Terminated Versions
4x-785C
pickeringtest.com Page 5
Specifications

Page 1.6 pickeringtest.com
Section 1 - Technical Specification
26.5 GHz Unterminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA
Bandwidth DC to 26.5 GHz
Isolation: 80 dB (0-3 GHz)
70 dB (3-8 GHz)
60 dB (8-12.4 GHz)
60 dB (12.4-18 GHz)
50 dB (18-26.5 GHz)
Insertion Loss: 0.2 dB (0-3 GHz)
0.3 dB (3-8 GHz)
0.4 dB (8-12.4 GHz)
0.5 dB (12.4-18 GHz)
0.7 dB (18-26.5 GHz
VSWR: 1.2:1 (0-3 GHz)
1.3:1 (3-8 GHz)
1.4:1 (8-12.4 GHz)
1.5:1 (12.4-18 GHz)
1.7:1 (18-26.5 GHz)
Maximum RF Carry Power: 240 W (0-3 GHz)
150 W (3-8 GHz)
120 W (8-12.4 GHz)
100 W (12.4-18 GHz)
40 W (18-26.5 GHz)
Expected Life (low power): 5 million ops per position
Typical Insertion Loss (dB) - 26.5 GHz
Unterminated Versions
Typical VSWR - 26.5 GHz
Unterminated Versions
Typical Isolation (dB) - 26.5 GHz
Unterminated Versions
4x-785C
pickeringtest.com Page 6
Specifications

Page 1.7 pickeringtest.com
Section 1 - Technical Specification
26.5 GHz Terminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA
Bandwidth DC to 26.5 GHz
Isolation: 80 dB (0-3 GHz)
70 dB (3-8 GHz)
60 dB (8-12.4 GHz)
60 dB (12.4-18 GHz)
55 dB (18-26.5 GHz)
Insertion Loss: 0.2 dB (0-3 GHz)
0.3 dB (3-8 GHz)
0.4 dB (8-12.4 GHz)
0.5 dB (12.4-18 GHz)
0.7 dB (18-26.5 GHz
VSWR: 1.2:1 (0-3 GHz)
1.3:1 (3-8 GHz)
1.4:1 (8-12.4 GHz)
1.5:1 (12.4-18 GHz)
1.7:1 (18-26.5 GHz)
Maximum RF Carry Power: 240 W (0-3 GHz)
150 W (3-8 GHz)
120 W (8-12.4 GHz)
100 W (12.4-18 GHz)
40 W (18-26.5 GHz)
Termination power rating: 1 W per termination,
3 W total per 6 channel
multiplexer
Expected Life (low power): >2 million ops per position
Typical VSWR - 26.5 GHz
Terminated Versions
Typical Isolation (dB) - 26.5 GHz
Terminated Versions
Typical Insertion (dB) Loss - 26.5 GHz
Terminated Versions
4x-785C
pickeringtest.com Page 7
Specifications

Page 1.8 pickeringtest.com
Section 1 - Technical Specification
40 GHz Unterminated & Terminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA 2.9
Bandwidth DC to 40 GHz
Isolation: 70 dB (0-6 GHz)
60 dB (6-12.4 GHz)
60 dB (12.4-18 GHz)
55 dB (18-26.5 GHz)
50 dB (26.5-40 GHz)
Insertion Loss: 0.2 dB (0-6 GHz)
0.4 dB (6-12.4 GHz)
0.5 dB (12.4-18 GHz)
0.7 dB (18-26.5 GHz)
1.1 dB (26.5-40 GHz)
VSWR: 1.3:1 (0-6 GHz)
1.4:1 (6-12.4 GHz)
1.5:1 (12.4-18 GHz)
1.7:1 (18-26.5 GHz)
2.2:1 (26.5-40 GHz
Maximum RF Carry Power: 40 W (0-6 GHz)
30 W (6-12.4 GHz)
25 W (12.4-18 GHz)
15 W (18-26.5 GHz)
5 W (26.5-40 GHz)
Termination power rating: 1 W per termination,
3 W total per 6 channel mux
Expected Life (Low Power): >2 million ops per position
Typical VSWR - 40 GHz Terminated Versions
Typical Isolation (dB) - 40 GHz Terminated Versions
Typical Insertion (dB) Loss - 40 GHz Terminated Versions
Typical Isolation (dB) - 40 GHz Unterminated Versions
Typical Insertion Loss (dB) - 40 GHz Unterminated Versions
Typical VSWR - 40 GHz Unterminated Versions
4x-785C
pickeringtest.com Page 8
Specifications

Page 1.9 pickeringtest.com
Section 1 - Technical Specification
50 GHz Unterminated & Terminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA 2.4
Bandwidth DC to 50 GHz
Isolation: 70 dB (0-6 GHz)
60 dB (6-12.4 GHz)
60 dB (12.4-18 GHz)
55 dB (18-26.5 GHz)
50 dB (26.5-40 GHz)
50 dB (40-50 GHz)
Insertion Loss: 0.2 dB (0-6 GHz)
0.4 dB (6-12.4 GHz)
0.5 dB (12.4-18 GHz)
0.7 dB (18-26.5 GHz)
0.9 dB (26.5-40 GHz)
1.2 dB (40-50 GHz)
VSWR: 1.3:1 (0-6 GHz)
1.4:1 (6-12.4 GHz)
1.5:1 (12.4-18 GHz)
1.7:1 (18-26.5 GHz)
1.9:1 (26.5-40 GHz)
2.2:1 (40-50 GHz)
Maximum RF Carry Power: 40 W (0-6 GHz)
30 W (6-12.4 GHz)
25 W (12.4-18 GHz)
15 W (18-26.5 GHz)
5 W (26.5-40 GHz)
3 W (40-50 GHz)
Termination power rating: 1 W per termination,
3 W total per 6 channel
multiplexer
Expected Life (Low Power): >2 million operations per
position
Typical VSWR - 50 GHz Terminated &
Unterminated Versions
Typical Isolation (dB) - 50 GHz
Terminated & Unterminated Versions
Typical Insertion Loss (dB) - 50 GHz
Terminated & Unterminated Versions
4x-785C
pickeringtest.com Page 9
Specifications

Page 1.10 pickeringtest.com
Section 1 - Technical Specification
67 GHz Unterminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA 1.85
Bandwidth DC to 67 GHz
Isolation: 70 dB (0-6 GHz)
60 dB (6-12.4 GHz)
60 dB (12.4-18 GHz)
55 dB (18-26.5 GHz)
50 dB (26.5-40 GHz)
50 dB (40-50 GHz)
50 dB (50-65 GHz)
50 dB (65-67 GHz)
Insertion Loss: 0.3 dB (0-6 GHz)
0.4 dB (6-12.4 GHz)
0.5 dB (12.4-18 GHz)
0.7 dB (18-26.5 GHz)
0.9 dB (26.5-40 GHz)
1.2 dB (40-50 GHz)
1.2 dB (50-65 GHz)
1.7 dB (65-67 GHz)
VSWR: 1.3:1 (0-6 GHz)
1.4:1 (6-12.4 GHz)
1.5:1 (12.4-18 GHz)
1.7:1 (18-26.5 GHz)
1.9:1 (26.5-40 GHz)
2.2:1 (40-50 GHz)
2.2:1 (50-65 GHz)
2.2:1 (65-67 GHz)
Maximum RF Carry Power: 40 W (0-6 GHz)
30 W (6-12.4 GHz)
25 W (12.4-18 GHz)
15 W (18-26.5 GHz)
5 W (26.5-40 GHz)
3 W (40-50 GHz)
1 W (50-65 GHz)
1 W (65-67 GHz)
Expected Life (Low Power): >2 million operations per
position
Typical VSWR - 67 GHz Unterminated Versions
Typical Isolation (dB) - 67 GHz Unterminated Versions
Typical Insertion Loss (dB) - 67 GHz Unterminated Versions
4x-785C
pickeringtest.com Page 10
Specifications

Page 1.11 pickeringtest.com
Section 1 - Technical Specification
67 GHz Terminated Versions
Characteristic Impedance: 50 Ω
Connectors: SMA 1.85
Bandwidth DC to 67 GHz
Isolation: 70 dB (0-6 GHz)
60 dB (6-12.4 GHz)
60 dB (12.4-18 GHz)
55 dB (18-26.5 GHz)
50 dB (26.5-40 GHz)
50 dB (40-50 GHz)
50 dB (50-65 GHz)
50 dB (65-67 GHz)
Insertion Loss: 0.3 dB (0-6 GHz)
0.4 dB (6-12.4 GHz)
0.5 dB (12.4-18 GHz)
0.7 dB (18-26.5 GHz)
0.9 dB (26.5-40 GHz)
1.2 dB (40-50 GHz)
1.4 dB (50-65 GHz)
1.7 dB (65-67 GHz)
VSWR: 1.3:1 (0-6 GHz)
1.4:1 (6-12.4 GHz)
1.5:1 (12.4-18 GHz)
1.7:1 (18-26.5 GHz)
1.9:1 (26.5-40 GHz)
2.2:1 (40-50 GHz)
2.2:1 (50-65 GHz)
2.2:1 (65-67 GHz)
Maximum RF Carry Power: 40 W (0-6 GHz)
30 W (6-12.4 GHz)
25 W (12.4-18 GHz)
15 W (18-26.5 GHz)
5 W (26.5-40 GHz)
3 W (40-50 GHz)
1 W (50-65 GHz)
1 W (65-67 GHz)
Termination power rating: 1 W per termination,
3 W total per 6 channel
multiplexer
Expected Life (Low Power): >2 million operations per
position
Typical VSWR - 67 GHz Terminated Versions
Typical Isolation (dB) - 67 GHz Terminated Versions
Typical Insertion Loss (dB) - 67 GHz Terminated Versions
4x-785C
pickeringtest.com Page 11
Specifications

Page 1.12 pickeringtest.com
Section 1 - Technical Specification
2.5 GHz Unterminated Version
Characteristic Impedance: 75 Ω
Connectors: 1.6/5.6
Bandwidth DC to 2.5 GHz
Isolation: 80 dB (0-1 GHz)
70 dB (1-2.5 GHz)
Insertion Loss: 0.2 dB (0-1 GHz)
0.3 dB (1-2.5 GHz)
VSWR: 1.2:1 (0-1 GHz)
1.3:1 (1-2.5 GHz)
Maximum RF Carry Power: 400 W (0-1 GHz)
240 W (1-2.5 GHz)
Expected Life (Low Power): >2 million operations per
position
Typical VSWR - 2.5 GHz 75 Ω Versions
Typical Isolation (dB) - 2.5 GHz 75 Ω Versions
Typical Insertion Loss (dB) - 2.5 GHz 75 Ω Versions
4x-785C
pickeringtest.com Page 12
Specifications

Page 1.13 pickeringtest.com
Section 1 - Technical Specification
Operating/Storage Conditions
Operating Temperature:
Humidity:
Altitude:
0 °C to +55 °C
Up to 90 % non-condensing
5000 m
Storage Temperature:
Humidity:
Altitude:
-20 °C to +75 °C
Up to 90 % non-condensing
15000 m
Mechanical Characteristics
Front panel mounted multiplexers:
• 40-785C Single unterminated versions (except 3 GHz)
- 3 slot 3U PXI (CompactPCI card)
• 40-785C 3 GHz versions
- 4 slot 3U PXI (CompactPCI card)
• 40-785C Single terminated versions
- 3 slot 3U PXI (CompactPCI card)
• 40-785C Dual unterminated versions
- 3 slot 3U PXI (CompactPCI card)
• 40-785C Dual terminated versions
- 6 slot 3U PXI (CompactPCI card)
• 42-785C Single unterminated versions (except 3 GHz)
- 3 slot 3U PXIe, compatible with PXIe hybrid slot
• 42-785C 3 GHz versions
- 4 slot 3U PXIe, compatible with PXIe hybrid slot
• 42-785C Single terminated versions
- 3 slot 3U PXIe, compatible with PXIe hybrid slot
• 42-785C Dual unterminated versions
- 3 slot 3U PXIe, compatible with PXIe hybrid slot
• 42-785C Dual terminated versions
- 6 slot 3U PXIe, compatible with PXIe hybrid slot
Remote mounted multiplexers:
• 40-785C Remote mounted versions
- Single slot 3U PXI (CompactPCI card)
• 42-785C Remote mounted versions
- Single slot 3U PXIe, compatible with PXIe hybrid slot
Remote mounted multiplexer versions are supplied with a
1.5 m interface cable for each of the supplied microwave
relays.
3D models for all versions in a variety of popular file formats
are available on request.
Power Requirements - 40-785C
+3.3 V +5 V +12 V -12 V
0.13 A 0.01 A 0.75 A 0
Power Requirements - 42-785C
+3.3 V +12 V
0.36 A 0.95 A
Connectors
40-788 - PXI bus via 32-bit P1/J1 backplane connector.
42-788 - PXIe bus via XJ3 and XJ4 backplane connectors.
Signals via front panel mounted coaxial connectors:
• 3 GHz, 50 Ω versions - N-type
• 18 GHz, 50 Ω versions - SMA
• 26.5 GHz, 50 Ω versions - SMA
• 40 GHz, 50 Ω versions - SMA-2.9
• 50 GHz, 50 Ω versions - SMA-2.4
• 67 GHz, 50 Ω versions - SMA-1.85
• 2.5 GHz, 75 Ω versions - Siemens 1.6/5.6
4x-785C
pickeringtest.com Page 13
Specifications