VTI Instruments EX1200 Series User manual

EX1200 SERIES
SWITCH CARDS
USER’S MANUAL
P/N: 82-0127-001
May 26th 2016
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509
[phone]

VTI Instruments Corp.
2 EX1200 Switch Card Preface
TABLE OF CONTENTS
INTRODUCTION
Certification .......................................................................................................................................................... 6
Warranty ............................................................................................................................................................... 6
Limitation of Warranty ......................................................................................................................................... 6
Restricted Rights Legend ...................................................................................................................................... 6
Declaration of Conformity .................................................................................................................................... 6
GENERAL SAFETY INSTRUCTIONS ............................................................................................................................. 7
Terms and Symbols .............................................................................................................................................. 7
Warnings ............................................................................................................................................................... 7
SUPPORT RESOURCES ............................................................................................................................................... 9
SECTION 1.................................................................................................................................................................. 10
INTRODUCTION ....................................................................................................................................................... 10
Overview ............................................................................................................................................................ 10
Plug-in Module Installation ................................................................................................................................ 10
Microwave Module Installation .......................................................................................................................... 11
Module Shielding/Grounding ............................................................................................................................. 11
Scanning ............................................................................................................................................................. 11
Application Environments .................................................................................................................................. 12
SECTION 2.................................................................................................................................................................. 13
SWITCHING OVERVIEW ........................................................................................................................................... 13
General Purpose Switching ................................................................................................................................. 13
Power Switching ................................................................................................................................................. 13
Matrix/Multiplexer Switching ............................................................................................................................ 13
RF Switching ...................................................................................................................................................... 14
SECTION 3.................................................................................................................................................................. 15
EX1200 SERIES TERMINAL BLOCKS ....................................................................................................................... 15
Introduction ........................................................................................................................................................ 15
Jumper Configuration ......................................................................................................................................... 16
Terminal Block Receiver .................................................................................................................................... 17
Programming Overview...................................................................................................................................... 17
Measure Thermistor Temperature ................................................................................................................. 17
Use Thermistor as a Reference Junction ....................................................................................................... 18
SECTION 4.................................................................................................................................................................. 19
EX1200-2001 PLUG-IN MODULE ........................................................................................................................... 19
20-Channel 16 Amp SPST Switch...................................................................................................................... 19
Connector Pins and Signals ................................................................................................................................ 19
Logical Diagram ................................................................................................................................................. 21
EX1200-2001 Specifications .............................................................................................................................. 22
Relay Breaking Capacity .................................................................................................................................... 22
EX1200-2002 PLUG-IN MODULE ........................................................................................................................... 23
12-Channel 16 Amp Form C (SPDT) Switch ..................................................................................................... 23
Connector Pins and Signals ................................................................................................................................ 23
Logical Diagram ................................................................................................................................................. 24
EX1200-2002 Specifications .............................................................................................................................. 25
EX1200-2007A PLUG-IN MODULE ......................................................................................................................... 26
48-Channel 1000 V Multiplexer ......................................................................................................................... 26
Connector Pins and Signals ................................................................................................................................ 26
Logical Diagram ................................................................................................................................................. 28
EX1200-2007A Specifications ........................................................................................................................... 29
EX1200-2008H PLUG-IN MODULE ......................................................................................................................... 30

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EX1200 Switch Card Preface 3
30-Channel 3 (1 x 10) High-Voltage Multiplexer .............................................................................................. 30
Connector Pins and Signals ................................................................................................................................ 30
Logical Diagram ................................................................................................................................................. 32
EX1200-2008H Specifications ........................................................................................................................... 33
EX1200-3001 PLUG-IN MODULE ........................................................................................................................... 34
1 x 64 2-wire Multiplexer ................................................................................................................................... 34
Connector Pins and Signals ................................................................................................................................ 34
Logical Diagram ................................................................................................................................................. 36
EX1200-3001 Specifications .............................................................................................................................. 38
EX1200-3001DS PLUG-IN MODULE ...................................................................................................................... 39
1 x 64 2-wire Multiplexer with Discharge Circuit .............................................................................................. 39
Connector Pins and Signals ................................................................................................................................ 39
Logical Diagram ................................................................................................................................................. 41
EX1200-3001DS Specifications ......................................................................................................................... 42
EX1200-3048 PLUG-IN MODULE ........................................................................................................................... 43
48-Channel 300 V/ 2 A Multiplexer ................................................................................................................... 43
Connector Pins and Signals ................................................................................................................................ 43
Logical Diagram ................................................................................................................................................. 45
EX1200-3048 Specifications .............................................................................................................................. 47
EX1200-3048S PLUG-IN MODULE ......................................................................................................................... 48
48-Channel Two-Wire FET Multiplexer ............................................................................................................ 48
Connector Pins and Signals ................................................................................................................................ 48
Logical Diagram ................................................................................................................................................. 50
EX1200-3048S Specifications ............................................................................................................................ 52
EX1200-3072 PLUG-IN MODULE ........................................................................................................................... 53
72-Channel 300 V/ 2 A Multiplexer ................................................................................................................... 53
Connector Pins and Signals ................................................................................................................................ 53
Logical Diagram ................................................................................................................................................. 55
EX1200-3072 Specifications .............................................................................................................................. 57
EX1200-3096 PLUG-IN MODULE ........................................................................................................................... 58
96-Channel 100 V / 0.5 A Two-Wire Multiplexer.............................................................................................. 58
Connector Pins and Signals ................................................................................................................................ 58
Logical Diagram ................................................................................................................................................. 61
EX1200-3096 Specifications .............................................................................................................................. 63
EX1200-3164 PLUG-IN MODULE ........................................................................................................................... 64
16 (1x4) 2-wire 300 V/ 2 Amp Multiplexer ........................................................................................................ 64
Connector Pins and Signals ................................................................................................................................ 64
Logical Diagram ................................................................................................................................................. 66
EX1200-3164 Specifications .............................................................................................................................. 68
EX1200-3824 PLUG-IN MODULE ........................................................................................................................... 69
8 (1 x 24) Solid State, 100V/100mA Multiplexer ............................................................................................... 69
EX1200-3824 Standard Board ............................................................................................................................ 69
EX1200-3824 with Attenuator Option................................................................................................................ 69
Connector Pins and Signals ................................................................................................................................ 70
Logical Diagram ................................................................................................................................................. 72
EX1200-38TB .................................................................................................................................................... 73
EX1200-3824 Specifications .............................................................................................................................. 76
EX1200-4003 PLUG-IN MODULE ........................................................................................................................... 77
Dual 4 x 16 Two-Wire Matrix, 300 V / 2 A ....................................................................................................... 77
Logical Diagram ................................................................................................................................................. 79
EX1200-4003 Specifications .............................................................................................................................. 81
EX1200-4128 PLUG-IN MODULE ........................................................................................................................... 82
4 x 128 One-wire Matrix, 150 V/0.5 A ............................................................................................................... 82
Connector Pins and Signals ................................................................................................................................ 82
Logical Diagram ................................................................................................................................................. 86
EX1200-4128 Specifications .............................................................................................................................. 88
EX1200-4260 PLUG-IN MODULE ........................................................................................................................... 89

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4 EX1200 Switch Card Preface
2 x 60 2-Wire Matrix .......................................................................................................................................... 89
Connector Pins and Signals ................................................................................................................................ 89
Logical Diagram ................................................................................................................................................. 93
EX1200-4260 Specifications .............................................................................................................................. 94
Relay Breaking Capacity .................................................................................................................................... 94
EX1200-4264 PLUG-IN MODULE ........................................................................................................................... 95
2 x 64 2-Wire Matrix .......................................................................................................................................... 95
Connector Pins and Signals ................................................................................................................................ 95
Logical Diagram ................................................................................................................................................. 99
EX1200-4264 Specifications ............................................................................................................................ 100
Relay Breaking Capacity .................................................................................................................................. 100
EX1200-5001 PLUG-IN MODULE ......................................................................................................................... 101
80-Channel 2 Amp Form A (SPST) Switch ..................................................................................................... 101
Connector Pins and Signals .............................................................................................................................. 101
Logical Diagram ............................................................................................................................................... 103
EX1200-5001 Specifications ............................................................................................................................ 105
EX1200-5002 PLUG-IN MODULE ......................................................................................................................... 106
32-Channel, 2 Amp Form C (SPDT) Switch .................................................................................................... 106
Connector Pins and Signals .............................................................................................................................. 106
Logical Diagram ............................................................................................................................................... 108
EX1200-5002 Specifications ............................................................................................................................ 110
EX1200-5004 PLUG-IN MODULE ......................................................................................................................... 111
32-Channel, 5 A SPDT Switch ......................................................................................................................... 111
Connector Pins and Signals .............................................................................................................................. 111
Logical Diagram ............................................................................................................................................... 113
EX1200-5004 Specifications ............................................................................................................................ 114
378HEX1200-5006 PLUG-IN MODULE ................................................................................................................. 115
40-Channel 2 Amp Form A (SPST) Switch ..................................................................................................... 115
Connector Pins and Signals .............................................................................................................................. 115
Logical Diagram ............................................................................................................................................... 117
EX1200-5006 Specifications ............................................................................................................................ 119
EX1200-6101 PLUG-IN MODULE ......................................................................................................................... 120
10 SP4T RF Multiplexers, 1.3 GHz .................................................................................................................. 120
Connector Pins and Signals .............................................................................................................................. 120
Logical Diagram ............................................................................................................................................... 122
EX1200-6101 Specifications ............................................................................................................................ 123
EX1200-6102 PLUG-IN MODULE ......................................................................................................................... 124
17-Channel (1x2) Coaxial Switches, 1.3GHz ................................................................................................... 124
Connector Pins and Signals .............................................................................................................................. 124
Logical Diagram ............................................................................................................................................... 126
EX1200-6102 Specifications ............................................................................................................................ 127
EX1200-6111 PLUG-IN MODULE ......................................................................................................................... 128
5-Channel SP4T Coaxial Switch ...................................................................................................................... 128
Connector Pins and Signals .............................................................................................................................. 128
Logical Diagram ............................................................................................................................................... 130
EX1200-6111 Specifications ............................................................................................................................ 131
EX1200-6216 PLUG-IN MODULE ......................................................................................................................... 132
Dual 1 x 16 RF Mux, 1 GHz Switch ................................................................................................................. 132
Connector Pins and Signals .............................................................................................................................. 132
Logical Diagram ............................................................................................................................................... 134
EX1200-6216 Specifications ............................................................................................................................ 135
EX1200-6216HV PLUG-IN MODULE .................................................................................................................... 136
Dual (1x16) 500 V 250 MHz Multiplexers....................................................................................................... 136
Connector Pins and Signals .............................................................................................................................. 136
Logical Diagram ............................................................................................................................................... 138
EX1200-6216HV Specifications ...................................................................................................................... 139
EX1200-6301 PLUG-IN MODULE ......................................................................................................................... 140

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EX1200 Switch Card Preface 5
4 Channel SP4T, RF Multiplexer, 50 Ω, 3 GHz ............................................................................................. 140
Connector Pins and Signals .............................................................................................................................. 140
Logical Diagram ............................................................................................................................................... 141
EX1200-6301 Specifications ............................................................................................................................ 142
EX1200-6301T PLUG-IN MODULE ....................................................................................................................... 143
4 Channel SP4T, Self-terminated RF Multiplexer, 50 Ω, 3 GHz ................................................................... 143
Connector Pins and Signals .............................................................................................................................. 143
Logical Diagram ............................................................................................................................................... 144
EX1200-6301T Specifications .......................................................................................................................... 145
EX1200-7100 PLUG-IN MODULE ......................................................................................................................... 146
DC - 26 GHz Microwave Switch Carrier and Relay Driver ............................................................................. 146
Front Panel Enclosure ....................................................................................................................................... 146
Microwave Switch Modules ............................................................................................................................. 147
7102 Microwave Module ............................................................................................................................ 147
7104 Microwave Module ............................................................................................................................ 148
7106 Microwave Module ............................................................................................................................ 148
7122 Microwave Module ............................................................................................................................ 149
Installing a Switch Module .......................................................................................................................... 149
EX1200-7100 Carrier Front Panel Connectors ................................................................................................. 150
EX1200-7100 Soft Front Panel......................................................................................................................... 150
EX1200-7100 Specifications ............................................................................................................................ 151
EX1200-SMP ....................................................................................................................................................... 152
EX1200-SMP4 Carrier Module ........................................................................................................................ 152
EX1200-08442 I/O Matrix Card ...................................................................................................................... 153
SMP ARCHITECTURE ................................................................................................................................... 154
Connector Pins and Signals .............................................................................................................................. 154
Logical Diagram ............................................................................................................................................... 155
EX1200-08442 Specifications .......................................................................................................................... 159
Inserting IO Matrix cards into SMP-4 Module ........................................................................................... 160
Inserting SMP-4 Module into EX1268A Chassis ........................................................................................ 161
Removing SMP-4 Module from the EX1268A Chassis .............................................................................. 161
Removing IO Matrix cards from SMP-4 Module and EX1268A Chassis ................................................... 162
SMP FIRMWARE UPDATE PROCEDURE .................................................................................................. 163
APPENDIX A ............................................................................................................................................................. 167
POWER CONSUMPTION AND WEIGHT .................................................................................................................... 167
Reference Tables .............................................................................................................................................. 167
APPENDIX B ............................................................................................................................................................. 169
SWITCH CARD ACCESSORIES ................................................................................................................................ 169
List of Accessories ............................................................................................................................................ 169
26-pin Connector ......................................................................................................................................... 169
41-pin Connector ......................................................................................................................................... 170
104-pin Connector ....................................................................................................................................... 170
160-pin Connector ....................................................................................................................................... 171
200-pin Connector ....................................................................................................................................... 171
50-pin Connector ......................................................................................................................................... 171

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6 EX1200 Switch Card Preface
CERTIFICATION
VTI Instruments Corp. (VTI) certifies that this product met its published specifications at the time of shipment from
the factory. VTI further certifies that its calibration measurements are traceable to the United States National
Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that
organization’s calibration facility, and to the calibration facilities of other International Standards Organization
members. Note that the contents of this document are subject to change without notice.
WARRANTY
The product referred to herein is warranted against defects in material and workmanship for a period of one year
from the receipt date of the product at customer’s facility. The sole and exclusive remedy for breach of any warranty
concerning these goods shall be repair or replacement of defective parts, or a refund of the purchase price, to be
determined at the option of VTI.
For warranty service or repair, this product must be returned to a VTI Instruments authorized service center. The
product shall be shipped prepaid to VTI and VTI shall prepay all returns of the product to the buyer. However, the
buyer shall pay all shipping charges, duties, and taxes for products returned to VTI from another country.
VTI warrants that its software and firmware designated by VTI for use with a product will executeits programming
when properly installed on that product. VTI does not however warrant that the operation of the product, or
software, or firmware will be uninterrupted or error free.
LIMITATION OF WARRANTY
The warranty shall not apply to defects resulting from improper or inadequate maintenance by the buyer, buyer-
supplied products or interfacing, unauthorized modification or misuse, operation outside the environmental
specifications for the product, or improper site preparation or maintenance.
VTI Instruments Corp. shall not be liable for injury to property other than the goods themselves. Other than the
limited warranty stated above, VTI Instruments Corp. makes no other warranties, express, or implied, with respect to
the quality of product beyond the description of the goods on the face of the contract. VTI specifically disclaims the
implied warranties of merchantability and fitness for a particular purpose.
RESTRICTED RIGHTS LEGEND
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subdivision (b)(3)(ii) of the
Rights in Technical Data and Computer Software clause in DFARS 252.227-7013.
DECLARATION OF CONFORMITY
The declaration of conformity for the EX1200 Series Mainframe applies to all of its available plug-in modules and
options. For specifics, refer to the EX1200 Series Mainframe User’s Manual.
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509 U.S.A.

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EX1200 Switch Card Preface 7
GENERAL SAFETY INSTRUCTIONS
Review the following safety precautions to avoid bodily injury and/or damage to the product.
These precautions must be observed during all phases of operation or service of this product.
Failure to comply with these precautions, or with specific warnings elsewhere in this manual,
violates safety standards of design, manufacture, and intended use of the product.
Service should only be performed by qualified personnel.
TERMS AND SYMBOLS
These terms may appear in this manual:
WARNING
Indicates that a procedure or condition may cause bodily injury or death.
CAUTION Indicates that a procedure or condition could possibly cause damage to
equipment or loss of data.
These symbols may appear on the product:
ATTENTION
- Important safety instructions
Frame or chassis ground
Indicates that the product was manufactured after August 13, 2005. This mark is
placed in accordance with EN 50419, Marking of electrical and electronic
equipment in accordance with Article 11(2) of Directive 2002/96/EC (WEEE).
End-of-life product can be returned to VTI by obtaining an RMA number. Fees
for take_2ack and recycling will apply if not prohibited by national law.
WARNINGS
Follow these precautions to avoid injury or damage to the product:
Use Proper Power Cord The power cable provided with this instrument meets the required
regulatory and statutory safety standards as indicated by this
product’s declaration of conformity. VTI recommends that the
power cord provided be used with the instrument that it is provided
with. If a different power cord is must to be used, however, it is the
responsibility of the user to select a power cord that meets any and
all regulatory and statutory requirements for their industry and
country.
Use Proper Power Source To avoid electrical overload, electric shock, or fire hazard, do not
use a power source that applies other than the specified voltage.
Power Consumption Prior to using the EX1200 series switch cards, it is imperative that
the power consumption of all cards that will be installed in the
mainframe be calculated on all power supply rails. Power
consumption information is provided in Appendix A. Information
regarding power consumption calculations can be found in the
EX1200 Series User’s Manual (P/N: 82-0127-000). Failure to do
so may result in damaging the switch card and the mainframe.

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8 EX1200 Switch Card Preface
WARNINGS (CONT.)
Avoid Electric Shock To avoid electric shock or fire hazard, do not operate this product
with the covers removed. Do not connect or disconnect any cable,
probes, test leads, etc. while they are connected to a voltage source.
Remove all power and unplug unit before performing any service.
Service should only be performed by qualified personnel.
Ground the Product This product is grounded through the grounding conductor of the
power cord. To avoid electric shock, the grounding conductor must
be connected to earth ground.
Operating Conditions To avoid injury, electric shock or fire hazard:
- Do not operate in wet or damp conditions.
- Do not operate in an explosive atmosphere.
- Operate or store only in specified temperature range.
- Provide proper clearance for product ventilation to prevent
overheating.
- DO NOT operate if any damage to this product is suspected.
Product should be inspected or serviced only by qualified
personnel.
Improper Use The operator of this instrument is advised that if the equipment is
used in a manner not specified in this manual, the protection
provided by the equipment may be impaired.
Conformity is checked by inspection.

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EX1200 Switch Card Preface 9
SUPPORT RESOURCES
Support resources for this product are available on the Internet and at VTI Instruments customer
support centers.
VTI Instruments Corp.
World Headquarters
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509
Phone: [phone]
Fax: [phone]
VTI Instruments
Cleveland Instrument Division
5425 Warner Road
Suite 13
Valley View, OH 44125
Phone: [phone]
Fax: [phone]
VTI Instruments
Lake Stevens Instrument Division
3216 Wetmore Avenue, Suite 1
Everett, WA 98201
Phone: [phone]
Fax: [phone]
VTI Instruments, Pvt. Ltd.
Bangalore Instrument Division
74, 75, Millers Road
Bangalore – 560 052
India
Phone: [phone]
Phone: [phone]
Fax: [phone]
Technical Support
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Visit 160Hhttp://www.vtiinstruments.com for worldwide support sites and service plan information.

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10 EX1200 Switch Card Introduction
321HSECTION 1
INTRODUCTION
OVERVIEW
Signal switching is at the heart of every automated test system. It is responsible for routing signals
of interest between test system instruments and the device under test (DUT). The purpose of the
testing is to improve product quality. The switch distributes instrument I/O, which can reduce
overall system cost. Since switching is effectively an extension of the instrument, it should be
transparent to the overall system. EX1200 switching products employ extensive signal shielding
and high-quality relays to ensure that the test system is “minimally aware” of the switch’s
presence.
PLUG-IN MODULE INSTALLATION
All EX1200 series switch cards must be installed into an EX1200 series mainframe to be used.
The mainframe operates on 90 V to 250 V at 50 Hz/60 Hz which is used to supply the cards the dc
voltages required for the cards to function properly. Before installing a plug-in module into an
EX1200 series mainframe, make sure that the mainframe is powered down. Insert the module into
the base unit by orienting the module so that the circuit board of the module can be inserted into
the slot of the base unit. Position the cover so that it fits into the module’s slot groove. Once the
module is properly aligned, push the module back and firmly insert it into the backplane
connector.
FIGURE 1-1: MODULE INSTALLATION (EX1200-3048 SHOWN)
NOTE To maximize air flow for cooling, blanking panels (P/N: 41-0472-012) should be installed into the
empty slots of EX1200 mainframes.

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EX1200 Switch Card Introduction 11
The maximum safe voltage for an EX1200 system is determined by the plug-in card with the
lowest voltage rating.
MICROWAVE MODULE INSTALLATION
For the EX1200-7100 Plug-in Module, microwave switch modules can be installed. Before
installing a switch module into the EX1200-7100 carrier, ensure that the mainframe is powered
down. Insert the switch module into the desired slot of the carrier. Slide the module into the
mating connector at the rear of the carrier using the two guide pins to ensure proper orientation.
Once the guide pins are aligned, push the module firmly mating connector. The module is then
sMUXred to the front panel of the carrier using four socket head cap screws.
FIGURE 1-2: MICROWAVE SWITCH INSTALLATION
MODULE SHIELDING/GROUNDING
Most EX1200 modules incorporate an integral shield into the design of the PCB that attenuates
noise and crosstalk between adjacent channels/modules. To properly utilize this feature, tie the
appropriate front panel connector pins to the mating cable’s common shield and/or ground. If this
feature is present on a module, the pins are identified in the module appendix in the Connector
Pins and Signals table and the signal is noted as “SHIELD”.
Leaving the SHIELD pins unconnected may have detrimental effects on signal crosstalk and
isolation. If no cable shield connection is available, chassis ground may be used to attach the
SHIELD pins.
Many plug-in modules also incorporate ground pins, labeled “GND_C” or simply “GND”. These
pins tie the module to chassis ground. Note that the SHIELD pins are not tied to ground and have
no electrical connections.
SCANNING
The EX1200 switch cards provide scanlist functionality to maximize measurement throughput.
The scanlist allows the relay state to be advanced by a hardware trigger rather than requiring the
state of the relay to be updated manually during program execution. Doing this eliminates the need
to wait on the controller to wait for a state to be settled and send the command to update relays
providing maximum throughput performance

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12 EX1200 Switch Card Introduction
APPLICATION ENVIRONMENTS
The EX1200 switching platform supports a wide variety of application environments. The
switches can be manually controlled through the embedded, web-based soft front panel or
programmatically on a Windows-based PC through the provided IVI VTEXSwitch driver
controlled on most platforms through the C++ driver. The EX1200 also allows for integration into
NI’s Switch Executive for high-level configuration and control.

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EX1200 Switching Overview 13
322HSECTION 2
SWITCHING OVERVIEW
GENERAL PURPOSE SWITCHING
When selecting switch cards for a test system, the following should be taken into consideration:
 Power Specifications
 Minimum Contact Rating
 Switching Time
 Bandwidth
The relay must be able to accommodate both the voltage, current, and total power that will be
switched and all of these specifications should be checked before making a selection. The
minimum contact rating and switching time specifications are important in systems where relays
will be opened and closed many times throughout the test. The faster the switch performs, the
faster the test will finish. The bandwidth specification indicates the frequencies the switch is able
to switch. Interchannel isolation and crosstalk are also affected by the frequency of the signals
being switched.
POWER SWITCHING
The EX1200-200x high-power switch cards provide high-power switching in a small form factor.
The EX1200-2001 and the EX1200-2002 are the only switch modules in their class with the
ability to switch up to 16 A. As such, the high-power cards are an ideal solution for applications
such as: ac line power switching, switching of dc or power supplies, controlling or driving relays
for industrial machines (robotics, numerical control machines), automotive engine control, and
solenoid switching. These switch cards also include a front panel interrupt line which will open all
relays in the module to provide safety. They can also be used in the setup phase of a scanlist to
switch power to and from a DUT before reading data into a multiplexer to the DMM.
MATRIX/MULTIPLEXER SWITCHING
Matrix and multiplexer cards allow the user the ability to combine multiple in the same chassis to
create larger switching systems: For matrix cards, multiple cards can be combined by connecting
either rows or columns of the relay together. For example, by placing six EX1200-4128’s in a
chassis and connecting all four rows of each module to the EX1200 backplane, a 4 x 768 can be
formed is a 1U rack with no external wiring.
To improve bandwidth specifications, it is important to utilize the stub breaking relays that are
incorporated into most matrix and multiplexer cards. These relays typically separate banks of
relays from each other or isolate the switch card from the DMM backplane. By keeping these
relays open, the length a signal must travel, and the amount of resistance it will encounter, can be
reduced, increasing the path’s bandwidth. Examples of these relays are shown in 323HFigure 2-1.

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14 EX1200 Switching Overview
FIGURE 2-1: STUB BREAKING RELAYS
When programming switches to perform 2-wire and 4-wire measurements, the 2-wire and 4-wire
channel names must be used. For “standard” matrix cards (i.e. 2-banks of paired H/L inputs), the
2- and 4-wire name, the 1-wire names is used as the base. The convention is illustrated in
324HTable 2-1 below:
1-Wire Channel Name 2-Wire Channel Name 4-Wire Channel Name
CH1_1L CH1_1
CH_1
CH1_1H
CH2_1L CH2_1
CH2_1H
CH1_2L CH1_2
CH_2
CH1_2H
CH2_2L CH2_2
CH2_2H
TABLE 2-1: STANDARD 2- AND 4-WIRE NAMING CONVENTIONS
For “non-standard” matrix cards, this convention cannot be used, however. For these switch cards,
the full 2- and 4-wire names are provided following the 1-wire discussion for those cards.
RF SWITCHING
The EX1200-6xxx cards can be used for high bandwidth applications such as switching to/from
oscilloscopes and function generators. These modules provide a maximum of 10 W of switching
power and the stub effects are terminated to ensure maximum signal fidelity.

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EX1200 Series Terminal Blocks 15
325HSECTION 3
EX1200 SERIES TERMINAL BLOCKS
INTRODUCTION
VTI offers differential and single-ended terminal blocks (TBs) for many of the EX1200 series
switch cards. The terminal blocks can be used to simplify cabling. In addition to this, the
differential terminal blocks also provide users an on-board thermistor for cold junction
compensation (CJC) when making temperature measurements. Signal pin mapping is provided for
the terminal blocks with its associated switch card.
FIGURE 3-1: EX1200-TB200

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16 EX1200 Series Terminal Blocks
JUMPER CONFIGURATION
Differential TBs have the ability to use an on-board 10 kΩ thermistor (RT1) to connect to an
instrument when temperature measurements are being made. Before doing so, the P2 header must
be configured correctly. The function of this header is to make a connection between the T1 and
T2 terminals on the terminal block, the CJC (RT1) sensor, and two other TB terminals.
In the default position, pin 1 is shorted to pin 6 and pins 3 and 4 are shorted (see 326HFigure 3-2) on
P2. This configuration allows T1 and T2 to be used in any type of measurement. When configured
to one of the other two configurations, the channels associated with these terminals are dedicated
to making temperature measurements and cannot be used in any other manner.
To use RT1 for CJC measurements, short pin 2 to pin 3 and pin 4 to pin 5. This will join T1 and
T2 to L_VS and H_VS. The terminal numbers for L_VS and H_VS differ between TB modules
and are documented with the terminal block pin mapping information for each switch card.
To use an external sensor for temperature measurements, short pin 1 to pin 2 and pins 5 and 6 on
P2. This joins T1 and T2 to RL_I and RH_I. For the TB104 and TB160, the external sensor should
be connected to T1 and T2 or T161 and T162 when in this configuration. For the TB200, the
external sensor can be connected T1 and T2 or T181 and T182 when in this configuration.
FIGURE 3-2: P2 JUMPER CONFIGURATION DIAGRAM
NOTE The actual switch card channel that is dedicated to temperature measurement through the P2
header is dependent on the channel to which T1 and T2 of the terminal block are connected.
327HFigure 3-2, an EX1200-TB160-1 is shown where T1 and T2 are connected to CH1_1L and
CH1_1H, respectively. The channels are indicated in the Terminal Block Pin Mapping discussion
for each switch card.

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EX1200 Series Terminal Blocks 17
TERMINAL BLOCK RECEIVER
The EX1200-TBR chassis is a 1U receiver capable of housing six terminal blocks. The
EX1200-TBR ships with rubber feet for table top installations, but may be fitted with rackmount
ears for installation into a test rack (P/N: 70-0367-010).
To install a terminal block into the EX1200-TBR, insert the flanges on the side of the terminal
block into the guide rails of the desired slot. Continue to push the terminal block into the receiver
until it is sMUXred by the rear-locking latch of the receiver. To remove the terminal block from
the EX1200-TBR, hold the center thumbscrew on the terminal block, then pull the terminal block
from the receiver.
Terminal Block Flange
Rear-locking latch
Cabling removed for clarity
FIGURE 3-3: TERMINAL BLOCK INSTALLATION INTO THE EX1200-TBR
PROGRAMMING OVERVIEW
To measure the thermistor temperature, first ensure that the P2 jumper has been configured
properly (see 328HJumper Configuration for more detail). Next, a scan list is developed which scans
CH1_1. In the following programming overview, a method for taking measurements using the on-
board thermistor will be provided.
Two scenarios will be provided: one where only the thermistor temperature is measured and one
where the RT1 is used as a reference junction and other channels make temperature
measurements. In the first example, the user can only measure the thermistor temperature at
CH1_1. In the second example, the user can measure the thermistor temperature at CH1_1 and can
also measure temperature on another channel which uses the CH1_1 as a reference junction.
Note that, in these examples, it is assumed that the EX1200 DMM is being used and that the P2
jumper has been configured appropriately.
Measure Thermistor Temperature
Either the VTEXScanner driver or the scanner soft front panel can be used to perform this
sequence.
1) Set the DMM to measure temperature using the thermistor.
a. Set the DMM function to Temperature.
b. Set the transducer type to Thermistor.
c. Set the thermistor resistance to 10000 (the thermistor is 10 kΩ).

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18 EX1200 Series Terminal Blocks
2) Save and provide a name for the DMM configuration for the scanning purposes (here, TEMP
is used).
3) Setup the scanlist
a. Add a scan step with a sweep phase that scans CH1_1 using the previously saved
configuration (e.g. CH1_1=TEMP)
b. The setup phase can be ignored for this example.
4) Initiate & Read
a. Initiate the scan
b. Read back the data
Use Thermistor as a Reference Junction
1) Set the DMM to measure temperature using the thermistor.
a. Set the DMM function to Temperature.
b. Set the transducer type to Thermistor.
c. Set the thermistor resistance to 10000 (the thermistor is 10 kΩ).
d. Set the isReferenceJunction parameter to True.
2) Save and provide a name for the DMM configuration for the scanning purposes.
3) Set the DMM to measure temperature using a Type K thermocouple (any thermocouple type
can be selected here, but Type K below).
a. Set the DMM function to Temperature.
b. Set the transducer type to Thermocouple.
c. Set the thermocouple type to Type K.
d. Set the reference type to External.
e. Set the isReferenceJunction parameter to False.
4) Save and provide a name for the DMM configuration for the scanning purposes.
5) Setup the scanlist
a. Add a scan step with a sweep phase that scans CH1_1 using the first saved configuration.
(e.g. CH1_1=RefJunction).
b. Add another scan step with a sweep phase that scans another channel (e.g.
CH1_2=TEMP).
c. The setup phase can be ignored for this example.
6) Initiate & Read
a. Initiate the scan
b. Read back the data

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EX1200-2001 Plug-in Module 19
329HSECTION 4
EX1200-2001 PLUG-IN MODULE
20-CHANNEL 16 AMP SPST SWITCH
The EX1200-2001 and EX1200-2002 are the only switch modules in their class with the ability to
switch up to 16 A. Some applications include: ac line power switching, switching of dc or ac
power supplies, control or driving relays for industrial machines (robotics, numerical control
machines), automotive engine control, and solenoid switching.
Since these modules typically switch power to the UUT or interface, the digital input lines on the
EX1200 series mainframes support the ability to force all relays automatically to their normally
open state if a fault condition occurs. This approach instantly removes all power to the UUT or
interface. These modules can be automatically configured in the setup phase at the beginning of
each scan step to facilitate test sequencing and control.
The EX1200-2001 can be controlled programmatically using IviSwtch-compliant calls. Both path
level programming and individual relay control are available. Refer to the host driver
documentation for additional details. 330HFigure 4-2 provides a logical diagram of the switch module
and identifies the switches used by the module. This information can be used for individual relay
control through the driver.
CONNECTOR PINS AND SIGNALS
FIGURE 4-1: EX1200-2001 FRONT PANEL (FRONT VIEW)

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20 EX1200-2001 Plug-in Module
Pin Signal Pin Signal
A CH_1NO Z CH_11COM
B CH_1COM a CH_12NO
C CH_2NO b CH_12COM
D CH_2COM c CH_13NO
E CH_3NO d CH_13COM
F CH_3COM e CH_14NO
H CH_4NO f CH_14COM
J CH_4COM h CH_15NO
K CH_5NO j CH_15COM
L CH_5COM k CH_16NO
M CH_6NO m CH_16COM
N CH_6COM n CH_17NO
P CH_7NO p CH_17COM
R CH_7COM r CH_18NO
S CH_8NO s CH_18COM
T CH_8COM t CH_19NO
U CH_9NO u CH_19COM
V CH_9COM v CH_20NO
W CH_10NO w CH_20COM
X CH_10COM x SHIELD
Y CH_11NO
NOTE Pin x is connected to a shield layer located directly under the relays and connecting wires.
Optimum performance is obtained when Pin x is tied to system or chassis ground and the front
panel mounting screws are sMUXred to the chassis frame.
TABLE 4-1: CONNECTOR PINS & SIGNAL ASSIGNMENTS