Pickering 20-610 User manual

Page (1)
UNIVERSAL MULTIPLEXER MODULE 20-610
pickering
Issue 5.1 July 2019
User Manual
GPIB Universal Multiplexer Module
(Model No. 20-610)
pickeringtest.com pickering
SYSTEM 10/20
*Please contact Pickering for alternative
PXI/LXI/USB solutions
*

Page (II) UNIVERSAL MULTIPLEXER MODULE 20-610
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Page (II) REED RELAY MODULE 40-110/115/120/125
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© COPYRIGHT (2019) 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)
UNIVERSAL MULTIPLEXER MODULE 20-610
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Page (III)
REED RELAY MODULE 40-110/115/120/125
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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) UNIVERSAL MULTIPLEXER MODULE 20-610
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Page (IV) GENERAL PURPOSE REED RELAY MODULE 10-110/115/120/125
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Page (IV) REED RELAY MODULE 40-110/115/120/125
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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.

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UNIVERSAL MULTIPLEXER MODULE 20-610
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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 ............................................................3.1
Software Installation .............................................................3.3
Self-Test..................................................................................3.3
Section 4
Programming Guide....................................................................4.1
Programming the Module .....................................................4.1
Section 5
Connector Information................................................................5.1
Section 6
Trouble Shooting.........................................................................6.1
Installation Problems ...........................................................6.1
Maintenance Information............................................................7.1
Relay Lookup Tables.............................................................7.1
PCB and Component Layout................................................7.2
Appendix ......................................................................................A.1
Conguration Schematics....................................................A.1
CONTENTS
Please use the hyperlinked text to navigate to the page required

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Page (VII)
UNIVERSAL MULTIPLEXER MODULE 20-610
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Page (VII)
GENERAL PURPOSE REED RELAY MODULE 10-110/115/120/125
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WARNINGS AND CAUTIONS
WARNING - HAZARDOUS ENVIRONMENTS SYMBOL
This product is not specically 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.
!
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 System 10/20 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. Printed Circuit Boards (PCBs) tted with these devices must be stored and transported in
anti-static bags.
CAUTION - PRODUCT DOCUMENTATION SYMBOL
Suitably qualied & 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.

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Page 1.1
UNIVERSAL MULTIPLEXER MODULE 20-610
pickering SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
pickeringtest.com
GPIB Universal Multiplexer Module 20-610
ISSUE 4.2 JUL 2019
• Very High Density 352 Pin Multiplexer
• Dual or Quad Multiplexer Operation, Switching
1 or 2 Poles
• Expandable to 10,000 Channels Using Internal
Analogue Bus
• Automatic Isolation Switches Reduce
Capacitive Loading in Large Systems
• High Quality Ruthenium Reed Relays For
Maximum Reliability
• Built-In Self Test
• Suitable for Ribbon Cable Connection
• Versatile Configuration Options: “One Module
for ALL Your General Purpose Multiplexer
Applications”
• Built-In RS-232 Port
Quad MUX Mode: 44 Channels
Bank 1
1
2
3
4
43
44
Common
1
Bank 2
1
2
3
4
43
44
Common
2
Bank 3
1
2
3
4
43
44
Common
3
Bank 4
1
2
3
4
43
44
Common
4
1
2
3
4
87
88
Bank 1
1
2
3
4
87
88
Bank 2
Common 1
Common 2
Dual MUX Mode:
88 Channels
The 20-610 Universal 352 Pin Multiplexer Module was the rst in
a new generation of very high density multiplexers from Pickering
Interfaces. One standard module offers a very large range of
switching possibilities plus extensive built in self-test.
Model 20-610 offers the very highest density multiplexing with 352
switch pins.
Universal Multiplexer - For Now & The Future
The 20-610 may be used for most general purpose multiplexer
requirements. The analogue common/s may be routed to the front
panel or, for large system implementation, to one of the internal
analogue buses. This versatility means that one multiplexer
module is suitable for many different applications.
Simple Internal Expansion to 10,000 Channels
Up to 2816 input channels can be accommodated in one System
20 Case, over 10,000 with multiple expansion cases.
Built-in Automatic Isolation Switching connects only the currently
active multiplexer switch bank, thereby keeping capacitive loading
and leakage currents in large multiplexer systems to a minimum.
*Please contact Pickering for alternative
PXI/LXI/USB solutions
*

Page 1.2 UNIVERSAL MULTIPLEXER MODULE 20-610
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SECTION 1 - TECHNICAL SPECIFICATION
Universal Multiplexer Module – 20-610
pickeringtest.com
Overview
Common
1.1
2.1
88.1
1.1
2.1
88.1
Isolation
Switch
Isolation
Switch
Bank 1
Bank 2
Common
Common
1.2
1.1
2.2
2.1
44.2
44.1
Common
1.2
1.1
2.2
2.1
44.2
44.1
Isolation
Switches
Isolation
Switches
Bank 1
Bank 2
Common
1.2
1.1
2.2
2.1
44.2
44.1
Common
1.2
1.1
2.2
2.1
44.2
44.1
Isolation
Switches
Isolation
Switches
Bank 3
Bank 4
Dual 88 Channel 1-Pole
20-610-021
Quad 44 Channel 2-Pole
20-610-022
Bank 4
2 Pole
Bank 3
2 Pole
Bank 2
2 Pole
Bank 1
2 Pole
Bank 0
2 Pole
Common Out
Bank 6
2 Pole
Bank 5
2 Pole
Internal 24-Pole Analogue Bus
Chan 1-176 Chan 177-352 Chan 353-528 Chan 529-704 Chan 705-880 Chan 881-1056 Chan 1057-1232
Power Supply
GPIB/RS-232
Interface
20-610-022
Up to 8 Multiplexers can be housed
per case, larger systems are formed
using master/slave case expansion
20-610-022 20-610-022 20-610-022 20-610-022 20-610-022 20-610-022 20-610-022
Creating Larger Multiplexers
When more than one module is used to make up a multiplexer –
see diagram below, where seven modules are used to make up a
1232 channel 2-pole multiplexer – then all multiplexer units must
have the same internal address, the location of each module within
the multiplexer is given by its own bank address. Bank addresses
must start at 0 and should be contiguous.
If there is a problem with any of the modules used to make
up a large multiplexer then an error will be detected (use the
REPORT? query to discover the cause).
Analogue Bus
The analogue common can be routed (using internal jumpers)
out to either the front panel connectors or the internal analogue
bus. Routing to the front panel allows the user complete exibility,
routing to the internal analogue bus simplies large system
construction and ensures good signal isolation from external
interference.
The System 10/20 backplane features a shielded 24 pole analogue
bus. This would be used with a multiplexer constructed using more
than one module where the selected channel will be carried along
the backplane analogue bus.
Built-In RS-232 Port
The 20-610 also has a built in RS-232 port (9600 baud, XON/
XOFF, 8 bit, no parity). This is provided on a 4 pin Molex type
connector on the front panel. A separate adapter lead to allow use
with a standard 9 pin D-type is available. The RS-232 port allows
the module to be congured, controlled and monitored from any
RS-232 terminal. This can be a very versatile debugging aid.

Page 1.3
UNIVERSAL MULTIPLEXER MODULE 20-610
pickering SECTION 1 - TECHNICAL SPECIFICATION
Universal Multiplexer Module – 20-610
pickeringtest.com
Specifications
Specification - 20-610 MUX System
Switch Type: Ruthenium Reed
Max Standoff Voltage:
Max Power:
Max Switch Current:
Max Carry Current:
100V
10W
0.5A
1.2A
Path Resistance
On (Single Module):
Off (Single Module):
500mΩ (typical)
>109Ω
Capacitance Open Channel:
Capacitance Channel to Channel:
<6pF
<30pF
Crosstalk (Single Channel 50Ω)
Channel to Channel - 10kHz:
Channel to Channel - 100kHz:
Channel to Channel - 1MHz:
Bank to Bank - 100kHz:
Bank to Bank - 1MHz:
Bandwidth (3dB, 1 module):
>80dB
>65dB
>45dB
>80dB
>65dB
5MHz
Noise Level (0 to 1MHz in 50Ω
system):
<-80dBm
Operate Time:
Release Time:
7ms
6ms
Expected Life (Low power):
Expected Life (Full power):
>1x108ops
>5x106 ops
Safety & CE Compliance
All modules are fully CE compliant and meet applicable EU
directives: Low-voltage safety EN61010-1:2010, EMC Immunity
EN61326-1:2013, Emissions EN55011:2009+A1:2010.
Operating/Storage Conditions
Operating Conditions
Operating Temperature:
Humidity:
Altitude:
0°C to +55°C
Up to 95% non-condensing
5000m
Storage and Transport Conditions
Storage Temperature:
Humidity:
Altitude:
-20°C to +75°C
Up to 95% non-condensing
15000m
Programming
The 20-610 Multiplexer module is simple to program:
ARESET a Open all channels on device a
CHAN a,c Select channel con multiplexer a
When in dual mode the address is
prexed by 1 or 2 (in quad mode by 1, 2,
3 or 4).
CHAN a,c,s Multi-channel selection argument s
allows
opening/closing of any combination
of channels.
Also allows selection of all
channels except c (not available in 1 pole
mode on very high density 20-610-022).
DELAY t Force a minimum delay of tmilliseconds
between two instructions
DIAGNOSTIC? Report any Self Test errors
RESET Open all switches on all modules
VIEW? a View status of device a
Self Test Details
Self-Test is invoked at power on and may also be operated under
software (*TST?) or via a recessed push button. Self-Test pass
is indicated on a front panel LED with a full pass/fail description
available using the DIAGNOSTIC? command. Self-Test
comprises 2 levels:
1. Logic Test
2. Relay Coil Test
In the unlikely event of a relay needing replacement spare relays
are built into 20-610 module.
Multiplexer Operating System
The 20-610-022 very high density multiplexer operates in the
following mode:
Quad 44-Channel 2-Pole Switching
The 20-610-021 high density multiplexer operates in the
following mode:
Dual 88-Channel 1-Pole Switching
Multi channel selection: Care must be taken when selecting
many channels simultaneously not to overrate the power supply. A
10-910 power supply will allow the simultaneous selection of up to
300 channels in a large multiplexer system.

Page 1.4 UNIVERSAL MULTIPLEXER MODULE 20-610
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SECTION 1 - TECHNICAL SPECIFICATION
Universal Multiplexer Module – 20-610
pickeringtest.com
Ordering Information
© Copyright (2019) Pickering Interfaces. All Rights Reserved Pickering Interfaces maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet.
Product Customization
Pickering System 20 modules are designed and manufactured
on our own exible manufacturing lines, giving complete product
control and enabling simple customization to meet very specic
requirements.
Customization can include:
• Alternative relay types
• Mixture of relay types
• Alternative number of relays
• Different performance specications
All customized products are given a unique part number, fully
documented and may be ordered at any time in the future. Please
contact your local sales ofce to discuss.
Product Order Codes
352-Pin Multiplexer, Very High Density
Quad 44 Channel 2 Pole 20-610-022-Q/44/2
176-Pin Multiplexer, High Density
Dual 88 Channel 1 Pole 20-610-021-D/88/1
20-610 Shown WIth Cover Removed
Mating Connectors & Cabling
96-Pin DIN 41612 Socket, Crimp Pin
96-Pin DIN 41612 Socket, IDC
96-Pin IDC Cable, 1m Length
(Other lengths to order)
10-967-001
10-967-101
10-967-201

Page 1.5
UNIVERSAL MULTIPLEXER MODULE 20-610
pickering SECTION 1 - TECHNICAL SPECIFICATION
Mechanical Specications
Voltage Supplies
Logic Supply 5Vdc ±5%
Relay Supply 12Vdc ±10%
† Approx. dimensions. Standard 160mm Eurocard.
Model 20-610
Approx. Weight 1kg
Dimensions (mm) 6U Eurocard as specied in
DIN41494
Front Panel Width 45.6
Height 268
Overall Length † 189
Former Products
Please note that manufacture has now ceased for the product congurations listed below. Schematic diagrams
can be found in the Appendix. Should you require any additional information related to them not contained in this
manual please contact the factory.
Product Order Codes
Very High Density Configurations 20-610-022
Single MUX 352 Channel, 1 Pole, Front & Rear Analogue Bus
Single MUX 176 Channel, 2 Pole, Front & Rear Analogue Bus
Single MUX 88 Channel, 4 Pole, Front & Rear Analogue Bus
Single MUX 44 Channel, 8 Pole, Front & Rear Analogue Bus
Dual MUX 176 Channel, 1 Pole, Front & Rear Analogue Bus
Dual MUX 88 Channel, 2 Pole, Front & Rear Analogue Bus
Dual MUX 44 Channel, 4 Pole, Front & Rear Analogue Bus
Quad MUX 88 Channel, 1 Pole, Front & Rear Analogue Bus
High Density Configurations 20-610-021
Single MUX 176 Channel, 1 Pole, Front & Rear Analogue Bus
Single MUX 88 Channel, 2 Pole, Front & Rear Analogue Bus
Single MUX 44 Channel, 4 Pole, Front & Rear Analogue Bus
Dual MUX 44 Channel, 2 Pole, Front & Rear Analogue Bus
Quad MUX 44 Channel, 1 Pole, Front & Rear Analogue Bus

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SECTION 1 - TECHNICAL SPECIFICATION
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Page 2.1
UNIVERSAL MULTIPLEXER MODULE 20-610
pickering SECTION 2 - TECHNICAL DESCRIPTION
SECTION 2 - TECHNICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
Figure 2.1 - High Density Switching Matrix Module 20-610
Functional Block Diagram
STATUS LEDs
RELAY BOARD
SIMM
CONTROLLER
PCB ASSY
FRONT PANEL CONNECTORS
RELAY
COILS
RELAY
CONTACTS
TO FRONT
PANEL
CONNECTOR J3
DRIVER
ICs
CONNECTOR J1
A functional block diagram is provided in Figure 2.1. The module is powered via chassis connectors J1 and J3
with +12V relay and +5V logic supplies. The interface to the user test equipment is via the front panel mounted
connectors. The module comprises a SIMM Controller PCB Assy and a Relay PCB Assy populated with electro-
mechanical relays. Additional driver ICs are tted on the Relay PCB. The module is available in two Multiplexer
congurations utilising either SPST or DPST Normally Open relays. The drivers on the Relay PCB are fed with
serial data from the SIMM Controller PCB. General status LEDs are provided on the front panel. Relay switching is
determined by operator programming.

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SECTION 2 - TECHNICAL DESCRIPTION
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Page 3.1
UNIVERSAL MULTIPLEXER MODULE 20-610
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Page 3.1
GENERAL PURPOSE REED RELAY MODULE 20-110/115/120/125
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SECTION 3 - INSTALLATION
Power Supply
with
Interface Module
above
6U System 20 Modules
(Not position dependent)
3U System 10 Modules
(Not position dependent)
kg
PRE-OPERATION CHECKS (UNPACKING)
1. Check the module for transport damage and report any damage immediately to Pickering Interfaces.
Do not attempt to install the product if any damage is evident.
2. Position the chassis relative to any other equipment the module(s) will connect with. Ensure the chassis is not
connected to the electrical supply.
3. Ensure that the designated area for the chassis containing the module is of at and solid construction to
withstand and support the combined weight of the module(s) and chassis.
!
Refer to the Warnings and Cautions at the front of this manual
Modular products require installation in a suitable System 10/20 chassis.
The module is designed for indoor use only.
!
HARDWARE INSTALLATION
ELECTRICAL CONNECTION (CHASSIS)
1. The chassis must be electrically installed in accordance with local regional electrical codes by a qualied
engineer.
2. Ensure the power supply lead provides the necessary integrity of chassis ground.
Electrostatic discharge can damage the components on the module. To avoid such damage in handling the
board refer to page VII.
Ensure that there is adequate ventilation.
Figure 3.1 - System 10/20 Front Access Case Split 24/60 with Various Modules Fitted.

Page 3.2 UNIVERSAL MULTIPLEXER MODULE 20-610
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SECTION 3 - INSTALLATION
Page 3.2 GENERAL PURPOSE REED RELAY MODULE 20-110/115/120/125
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SECTION 3 - INSTALLATION
Figure 3.2 - Module Guide Rail Position
Figure 3.3 - A Partially Built System 20 Front Access Chassis
!
MODULE INSTALLATION
The module should be installed in accordance with the following procedure:
1. Ensure that the system is turned OFF but still connected to mains so that it remains grounded.
2. If the module has address switches ensure they are set to the appropriate position. (See Section 4).
Note individual modules are not sent out with a system drawing detailing their address.
3. Choose an appropriate slot in the rack and remove the blanking plate (if tted).
(See the Pickering 10-910M IEEE-488 GPIB System 10/20 Ancillaries manual for further details).
(When tted, additional modules will be automatically recognised by the interface card. See Figure 3.1).
4. If necessary t the module guide rails as supplied with the module to both the top and bottom of the chassis
in that slot position. One guide rail slot should be to the left of the connector as shown in Figure 3.2.
5. Align the module with the backplane and screw holes at the front of the chassis.
Hold the handle whilst slowly sliding the module into the card guides until the module seats rmly into the
backplane. See Figure 3.4. The front panel of the module should be ush with the front or rear panel of the
chassis.
6. Screw the front panel of the module to the chassis front panel mounting rails.
7. Ensure all necessary modules including the power supply are tted to the rack and other slots blanked off
before powering up.
To achieve the correct initialisation of the sytem, ensure any slave chassis are powered up before the master
chassis.

Page 3.3
UNIVERSAL MULTIPLEXER MODULE 20-610
pickering SECTION 3 - INSTALLATION
Page 3.3
GENERAL PURPOSE REED RELAY MODULE 20-110/115/120/125
pickering SECTION 3 - INSTALLATION
Figure 3.4 - Module Insertion in a Pickering 20-935A-001 Front Access Chassis
SOFTWARE INSTALLATION
Refer to the Pickering manual 10-921M.
For the latest version of the driver please refer to our web site pickeringtest.com where links to our Software
Download page will provide the driver software for the various programming environments encountered.
Self-Test Function
Self-Test is invoked at power on and may also be operated under software control (*TST?). Self-Test pass is
indicated on a front panel LED with a full pass/fail description available using the DIAGNOSTIC? command.
Self-Test comprises 2 levels, see Figure 3.6:
1. Logic Test: Checks all logic including on-board microprocessor, relay drivers etc.
2. Relay Coil Test: All reed relay coils are checked for continuity.
An enhancement to the Self-Test using an external xture may allow a Relay Contact test as shown in Figures 3.5
and 3.6. Please contact the factory for details.
Note: Spare reed relays are mounted onto the relay circuit board for fast repair, additional reed relays are available
from Pickering Interfaces.
Self-Test Operation
Self Test is always run at power on. If self test is run under software control it will rstly clear the whole multiplexer
(Manual Test will only function when the module is in a clear state). When the self-test has nished the multiplexer
will be returned to an all clear state (i.e. the previous state will not be remembered!).
Please note that because of the long self-test time that your computer may time out waiting for the test result (many
PC's have default timeouts set to low values).
Detailed Self-Test Reporting using the DIAGNOSTIC? Query
The DIAGNOSTIC? query will give an ASCII string detailing any self test failures. These will include:-
Logic: Microprocesor, RAM, EPROM, Relay Drivers, Invalid Link Settings etc.
Relay Coils: Open Circuit Coil.
This string is not intended to be processed by the user’s software, it is suitable for copying directly onto the screen
of your control computer. This information will then indicate maintenance required (please contact Pickering for
further help).

Page 3.4 UNIVERSAL MULTIPLEXER MODULE 20-610
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SECTION 3 - INSTALLATION
Figure 3.5 - 20-610 Relay Contact Test using an External Fixture