VTI Instruments Ametek EX1200A Series User manual

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EX1200A SERIES
HIGH-DENSITY SWITCH/MEASURE
AND CONTROL SYSTEMS
USER’S MANUAL
P/N: 82-0132-000
Rev February 9th, 2017
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509
[phone]

VTI Instruments Corp.
2 EX1200A Series Preface
TABLE OF CONTENTS
TABLE OF CONTENTS................................................................................................................................................2
Certification..........................................................................................................................................................5
Warranty...............................................................................................................................................................5
Limitation of Warranty.........................................................................................................................................5
Trademarks...........................................................................................................................................................5
Restricted Rights Legend......................................................................................................................................5
DECLARATION OF CONFORMITY...............................................................................................................................6
DECLARATION OF CONFORMITY...............................................................................................................................7
GENERAL SAFETY INSTRUCTIONS.............................................................................................................................8
Terms and Symbols ..............................................................................................................................................8
Warnings...............................................................................................................................................................8
SUPPORT RESOURCES .............................................................................................................................................10
SECTION 1..................................................................................................................................................................11
INTRODUCTION.......................................................................................................................................................11
Features...............................................................................................................................................................11
EX1200A System Specifications........................................................................................................................14
EX1200A Series 1 U, Full Rack Mainframe Dimensional Diagram ..................................................................16
EX1200A Series 3 U Mainframe Dimensional Diagram....................................................................................17
EX1200A Series DMM Specifications...............................................................................................................18
DMM Removal/Replacement.............................................................................................................................25
Explanation of Specifications.............................................................................................................................28
Maximizing Measurement Performance.............................................................................................................30
SECTION 2..................................................................................................................................................................33
PREPARATION FOR USE...........................................................................................................................................33
Unpacking...........................................................................................................................................................33
Determine System Power Requirements ............................................................................................................33
Installation Location...........................................................................................................................................33
Warm-Up Time...................................................................................................................................................34
Plug-in Module Installation................................................................................................................................34
Removing Plug-in Modules................................................................................................................................35
EX1202A Mainframe Installation Options.........................................................................................................35
EX1206A Mainframe Installation Options.........................................................................................................44
3U Mainframe Installation Options....................................................................................................................49
Blanking Panel....................................................................................................................................................54
Connecting/Disconnecting Line Power ..............................................................................................................54
Software Installation...........................................................................................................................................54
Driver Installation...............................................................................................................................................55
Network Configuration.......................................................................................................................................55
Network Troubleshooting...................................................................................................................................56
Time Configuration ............................................................................................................................................62
SECTION 3..................................................................................................................................................................65
BASIC MAINFRAME OPERATION .............................................................................................................................65
Input Connections...............................................................................................................................................65
DMM Bus...........................................................................................................................................................70
LED Indicators ...................................................................................................................................................71
Locking...............................................................................................................................................................71
Triggering...........................................................................................................................................................71
SECTION 4..................................................................................................................................................................73
BASIC EX1200A DMM OPERATION ......................................................................................................................73
Overview ............................................................................................................................................................73
DMM Input Connections....................................................................................................................................74

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EX1200A Series Preface 3
DMM MEASUREMENT BASICS ...............................................................................................................................77
Select an Input Connector...................................................................................................................................77
Configure the Measurement ...............................................................................................................................78
Configure Triggering..........................................................................................................................................78
Take the Measurement........................................................................................................................................80
Retrieve the Data................................................................................................................................................80
DMM FUNCTIONS ..................................................................................................................................................81
Range..................................................................................................................................................................81
Resolution...........................................................................................................................................................82
Integration/Aperture Time..................................................................................................................................83
Auto-Zero ...........................................................................................................................................................83
Limits..................................................................................................................................................................84
Math Functions...................................................................................................................................................84
DC Voltage Measurements.................................................................................................................................85
AC Voltage Measurements.................................................................................................................................88
DC and AC Current Measurements....................................................................................................................91
Resistance Measurements...................................................................................................................................92
Frequency/Period Measurements........................................................................................................................94
Temperature Measurements................................................................................................................................96
Self-Test ...........................................................................................................................................................104
SECTION 5................................................................................................................................................................105
SCANNER OVERVIEW............................................................................................................................................105
Overview ..........................................................................................................................................................105
SECTION 6................................................................................................................................................................107
TRIGGERING .........................................................................................................................................................107
Overview ..........................................................................................................................................................107
SECTION 7................................................................................................................................................................109
WEB PAGE OPERATION.........................................................................................................................................109
Introduction ......................................................................................................................................................109
General Web Page Operation ...........................................................................................................................110
Soft Front Panel Main Page..............................................................................................................................111
Scanner Soft Front Panel..................................................................................................................................112
Instrument Soft Front Panels ............................................................................................................................119
Switch Soft Front Panels ..................................................................................................................................119
DMM Soft Front Panel.....................................................................................................................................122
DMM Calibration Web Page............................................................................................................................127
Network Configuration.....................................................................................................................................130
Time Configuration ..........................................................................................................................................131
LXI Synchronization ........................................................................................................................................133
LXI Identification.............................................................................................................................................135
Blink LAN Indicator.........................................................................................................................................136
Change Password..............................................................................................................................................136
Upgrade ............................................................................................................................................................137
SECTION 8................................................................................................................................................................143
PROGRAMMING.....................................................................................................................................................143
Programming References..................................................................................................................................143
SECTION 9................................................................................................................................................................145
MAINTENANCE .....................................................................................................................................................145
Replaceable Fuse..............................................................................................................................................145
CPU Board Removal/Replacement (3U Mainframes Only).............................................................................145
EX1200A DMM CALIBRATION/VERIFICATION....................................................................................................147
Introduction ......................................................................................................................................................147
Required Resources..........................................................................................................................................147
Setting Up the Instruments ...............................................................................................................................147

VTI Instruments Corp.
4 EX1200A Series Preface
Connecting to the EX1200A.............................................................................................................................148
Login into SFP..................................................................................................................................................149
Time Configuration ..........................................................................................................................................150
Performing Calibration.....................................................................................................................................150
Performing Verification....................................................................................................................................152
APPENDIX A.............................................................................................................................................................155
ONBOARD MEMORY .............................................................................................................................................155
Memory Listings and Clearing Procedures.......................................................................................................155
APPENDIX B.............................................................................................................................................................157
POWER CONSUMPTION .........................................................................................................................................157
Plug-in Module Power Consumption ...............................................................................................................157
APPLICATION NOTE..............................................................................................................................................158
Overview ..........................................................................................................................................................158
EX1206A and EX1208A Power Consumption Calculation .............................................................................158
INDEX.......................................................................................................................................................................161

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EX1200A Series Preface 5
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. Note that specifications are subject to change without notice.
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 execute its 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.
TRADEMARKS
Java Runtime Environment™ are trademarks or registered trademarks of Sun Microsystems, Inc. or its subsidiaries
in the United States and other countries. LabVIEW™ and LabWindows/CVI™ are trademarks of National
Instruments Corporation. Visual Basic®, Windows®, and Internet Explorer® are registered trademarks of the
Microsoft Corporation or its subsidiaries. Linux® is a registered trademark of the Linux Foundation. IVI™is a
trademark of the IVI Foundation. Bonjour™ is a trademark of Apple, Inc.
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.
VTI Instruments Corp.
2031 Main Street
Irvine, CA 92614-6509 U.S.A.

VTI Instruments Corp.
6 EX1200A Series Preface
DE C L A R A T I O N O F CO N F O R M I T Y
Declaration of Conformity According to EN ISO/IEC 17050-1:2004
MANUFACTURER’S NAME VTI Instruments Corporation
MANUFACTURER’S ADDRESS 2031 Main Street
Irvine, California 92614-6509
PRODUCT NAME High-Density Switch/Measure and Control System
MODEL NUMBER(S) EX1202A and EX1206A Mainframes and Plug-in Modules
PRODUCT OPTIONS All
PRODUCT CONFIGURATIONS All
VTI Instruments declares that the aforementioned product conforms to the requirements of the Low Voltage
directive (European Council directive 2014/35/EU, dated 22 July 1993) and the Electromagnetic
Compatibility directive (European Council directive 2014/30/EU; generally referred to as the EMC
directive). In substantiation, the products were tested and/or evaluated to the standards shown below:
SAFETY EN61010-1:2010
EMC EN61326-1:2013
EN55011 Class A Group 1
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
EN61000-4-11
CISPR 22
June 2016
Steve Mauga, QA Manager

www.vtiinstruments.com
EX1200A Series Preface 7
DE C L A R A T I O N O F CO N F O R M I T Y
Declaration of Conformity According to EN ISO/IEC 17050-1:2004
MANUFACTURER’S NAME VTI Instruments Corporation
MANUFACTURER’S ADDRESS 2031 Main Street
Irvine, California 92614-6509
PRODUCT NAME High-Density Switch/Measure and Control System
MODEL NUMBER(S) EX1208A Mainframes and Plug-in Modules
PRODUCT OPTIONS All
PRODUCT CONFIGURATIONS All
VTI Instruments declares that the aforementioned product conforms to the requirements of the Low Voltage
directive (European Council directive 2014/35/EU, dated 22 July 1993) and the Electromagnetic
Compatibility directive (European Council directive 2014/30/EU; generally referred to as the EMC
directive). In substantiation, the products were tested and/or evaluated to the standards shown below:
SAFETY EN61010-1:2010
EMC EN61326-1:2013
EN55011 Class A Group 1
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
EN61000-4-11
CISPR 22
June 2016
Steve Mauga, QA Manager

VTI Instruments Corp.
8 EX1200A Series Preface
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. Note that this
product contains no user serviceable parts or spare parts.
Service should only be performed by qualified personnel. Disconnect all power before servicing.
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 or in the manual:
ATTENTION - Important safety instructions
Indicates hazardous voltage.
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-back 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
To avoid hazard, only use the power cord specified for this product.
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.
The mains outlet that is used to power the equipment must be
within 3 meters of the device and shall be easily accessible.
User Proper Fuse
To avoid fire hazard, only use the type and rating fuse specified for
this product.
Power Consumption
Prior to using EX1200A series plug-in modules, it is imperative that
the power consumption of all modules that will be installed in the
mainframe be calculated for all power supply rails. The required
information can be found in Appendix B of the EX1200A Series
User’s Manual (P/N: 82-0127-000).Failure to do so may result in
damaging the switch card and the mainframe.

www.vtiinstruments.com
EX1200A Series Preface 9
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.
-
When selecting the installation location, be certain that there is
enough space around the power plug and the outlet so that they
are readily accessible. Do not insert the power cord into an
outlet where accessibility to the plug cord is poor.
-
All unused slots should be closed with the dummy filler panels
to ensure a proper air circulation. This is critical to avoid
overheating of the cards.
-
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.

VTI Instruments Corp.
10 EX1200A Series Preface
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]
AMETEK Instruments Pvt. Ltd. India
4th Floor, Block A,
Divyashree NR Enclave,
EPIP Industrial Area,
Whitefield,
Bangalore –560066 INDIA
Phone: [phone]
Fax: [phone]
Technical Support
Phone: [phone]
Fax: [phone]
E-mail: sup[email protected]
Visit http://www.vtiinstruments.com for worldwide support sites and service plan information.

www.vtiinstruments.com
EX1200A Series Introduction 11
SECTION 1
INTRODUCTION
FEATURES
High-density Switch Subsystem with Scanning Measure and Control
The EX1200A systems are the highest density scanning switch/measure and control subsystem on
the market today with the capacity to switch up to 576 channels of voltage or temperature in a 1U
mainframe. A variety of modules can be utilized to build a comprehensive switching system
capable of routing dc to RF signals, as well as power signals up to 16 A. Input channels can be
routed directly to an optional 6½ digit DMM through an internal multiplexer bus to simplify
cabling. Analog and digital I/O modules can be added to control external devices.
The EX1200As provide a scalable architecture available as a half rack, 1U mainframe capable of
accepting up to two plug-in modules in addition to the optional DMM, as well as a full rack, 1U
version capable of accepting up to six plug-in modules and the optional DMM. This level of
scalability offers system developers the ability to easily construct small to large systems with a
common platform that maximizes reusability of engineering development.
Optimized Performance
EX1200As leverages the same technology that made VTI’s VXI-based SMIP switching family the
most successful modular switching platform for high-performance requirements in the most
demanding and complex application spaces. Now, VTI makes this powerful, cost-effective
solution commercially available for functional test systems, process monitoring, signal switching,
automotive ECM, temperature/data logging, and cable harness and battery testing.
The primary functions of EX1200As focus on signal switching, data logging, level detection, and
control. The compact 1U design provides the granularity to address small channel requirements
while allowing for multiple boxes to be “daisy-chained” together through the communications
interface based on Ethernet to accommodate larger applications.
Measurement Integrity
VTI has a long history of delivering high-density, modular switching solutions for the most
demanding applications in the military and aerospace market. VTI has years of experience in
designing switching systems that preserve the integrity of the signal that are routed between high-
performance instrumentation and complex designs under test. This provides the test developer
with the assurance that the switching system will not interfere with the signals of interest.
When tests are run in an uncontrolled environment, it is difficult to maintain predictable data over
a wide range of temperatures. The EX1200A system multimeter improves the accuracy of test data
by incorporating multiple calibration sets. Up to eight calibration sets can be stored on an
EX1200A, allowing the system to be ‘fine-tuned’ at various temperatures, thus returning reliable,
accurate, environment-independent data.

VTI Instruments Corp.
12 EX1200A Series Introduction
More than Switch and Measure
EX1200As include a wide range of modules that can be used to create a stimulus/response test
subsystem. Analog output modules can be used as part of the test sequence to generate waveforms
or set control levels and can be synchronized with measurement inputs. Digital I/O modules are
also available and can be used to control external devices such as relay coils, or as bus emulation
with pattern generation capability of up to 10 MHz. Inputs can be constantly monitored,
independent of the scanlist with an event detector in order to detect fault conditions that must be
immediately serviced by the test system.
Fast Throughput
The full-featured scanlist and tight synchronization with the internal DMM minimizes processor
overhead and reduces the overall test execution time. Channel lists can be stepped through in
sequence and synchronized with DMM measurements. No processor intervention is required, thus
the overall time to complete test can be limited to integration/settling time of DMM and settling
time of relays.
Low Cost of Ownership
EX1200As can be used to mix thermocouple, RTD, thermistor, and voltage channels in a single
mainframe to offer maximum flexibility for multiple applications and seamless network
integration with other instruments. This scalable architecture in a small footprint optimizes the
cost/channel across a wide range of channel counts. The Ethernet-based communication interface
is based on an industry standard that is built to stand the test of time and eliminates concerns
related to interface obsolescence and support cost commonly found on PC-based architectures.
Since EX1200As interface over a standard LAN connection, it is not affected by computer bus
obsolescence.
Maintenance Friendly
The EX1200A systems interface with the host computer using low-cost, readily available, and
lightweight Ethernet cabling. In addition, the switch modules are pluggable from the front,
resulting in very low MTTR, simplified wiring to termination panels, and a reduction in sparing
costs. The onboard relay monitor tracks relay actuations and stores the data in memory simplifying
predictive maintenance. Embedded monitor and control panels provide immediate access to
instrument functions and require no third party software beyond standard web tools creating a
framework for simplified front-line maintenance.
“Best-in-Class” Software
VTI delivers a variety of software utilities and options that are designed to accelerate the time it
takes to begin using an EX1200A. It is delivered with an embedded web interface that provides
virtual control of all functions in the module without the need for any third party software aside
from a standard web browser and Java Runtime Environment™ (JRE). These graphical front
panels have been designed to closely emulate actual front panel controls to optimize ease of use.
The functionality has been implemented such that most operations can be accessed through a very
clean main panel with no function panel being more than one layer deep.
More than an Embedded Control Panel
Each switch and instrument has its own embedded web interface that can be used to directly
monitor and control operation of the device. In addition, a powerful soft front panel dedicated to
scanning measurement operations is provided. Operators can quickly setup a list of channels to be
measured at programmable intervals with desired functions per channel (e.g. dc voltage,
temperature, resistance, etc.) as well as the state of discrete switches and analog and digital output
channels at the beginning of each scan step. This robust utility provides a very quick and easy
mechanism for defining test sequences where stimulus and switch settings need to be modified
during the test and input channels can be measured to verify how they respond to these changes.

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EX1200A Series Introduction 13
EXLab - Setup and Run
EX1200As are supported by the popular EXLab turnkey software package. It allows end users to
quickly setup a data-logging test scenario and begin collecting data within minutes. The EXLab
intuitive GUI significantly shortens the time-consuming tasks of test setup and configuration –
from setting channel configurations and display routines, to creating and exporting data files.
Test engineers can begin monitoring, recording, and analyzing data faster than ever before. Setup
is quick and easy with EXLab auto instrument discovery and intuitive GUI for setting channel
configurations. EX1200A instruments are auto-identified and once setup is complete, engineers
are immediately ready to capture, display, and analyze data. With EXLab and an EX1200A,
engineers can design a mixed signal distributed measurement system including voltage,
thermocouple, RTD, and digital inputs. A wide range of graphical displays are available to
generate customized displays of multiple channels simultaneously. EXLab systems save time and
reduce the frustration normally associated with software development efforts.
Flexible Application Programming Options
Every EX1200A series module is delivered with an application programming interface (API) that
conforms to the industry standard IVI™specifications for its class. The IVI drivers port seamlessly
into the most commonly used application development environments such as LabView™,
LabWindows/CVI™, C++®, and Visual Basic®, among others. The intuitive APIs simplify
programming and expose all available instrument functionality, eliminating the need for low-level
coding. The EX1200A series driver is designed to support advanced functionality such as:
End-end path-level programming across mainframes
Logical channel naming
Relay odometer for predictive maintenance
Scanning of multiple channels
LXISync API for sophisticated triggering options
While IVI is intended for Windows®-based operating systems, VTI’s innovative approach to
driver development allows users to develop their applications using an IVI-like interface that can
be imported into Linux®and other operating systems. This flexibility provides system developers
with true OS independence without the need to sacrifice the convenience that instrument drivers
deliver.

VTI Instruments Corp.
14 EX1200A Series Introduction
EX1200A SYSTEM SPECIFICATIONS
GENERAL SPECIFICATIONS
MODULE SLOTS
1 U Mainframes
EX1202A
EX1206A
3 U Mainframes
EX1208A
Two standard plug-in module (PIM) slots
Six standard PIM slots
Sixteen standard PIM slots
DIMENSIONS
1 U Mainframes
EX1202A
EX1206A
3 U Mainframes
EX1208A
Embedded, ½ rack U mainframe (17.22” D, 8.61” W, 1.75” H)
Embedded, 1 rack U mainframe (17.22” D1, 17.27” W, 1.75” H)
Embedded, 3 rack U mainframe (17.56” D2, 16.72” W, 5.22” H)
Note1: Add 0.5” to depth for DMM handles.
Note2: Add 1.0” to depth for DMM handles.
WEIGHT
1 U Mainframes
EX1202A
EX1262A
EX1206A/EX1266A
3 U Mainframes
EX1208A/EX1268A
4.9 lbs (2.3 kg)
5.3 lbs (2.4 kg)
7.1 lbs (3.2 kg)
16.2 lbs (7.4 kg)
ENVIRONMENTAL
Operating temperature
Operating altitude
Operating humidity
Storage temperature
Storage altitude
Storage humidity
Shock and vibration
0 °C –55 °C
10,000 ft (3,000 m) maximum
5% - 95% non-condensing @ 0°C - 30°C, 5% - 75% non-condensing @ 30 °C –40 °C,
5% - 45% non-condensing @ 40 °C –50 °C (per 3.8.2 of MIL-PRF-28800F Class 3)
-40 °C –70 °C
15,000 ft (4,500 m) maximum
5% –95%, non-condensing
Per 3.8.5 of MIL-PRF-28800F, Class 3
POWER SPECIFICATIONS
AVAILABLE POWER1
EX1202A/06A
EX1208A
120 W
1000 W
USEABLE POWER1
EX1202A
EX1262A
EX1206A
EX1266A
EX1208A
EX1268A
102.48 W
96.53 W
101.48 W
95.53 W
976.48 W
970.53 W
* For more information, see the Power Consumption in Appendix B.
MAXIMUM CURRENT PER RAIL1,2
3.3 V 5 V 24 V
EX1202A
EX1262A
EX1206A
EX1266A
EX1208A
EX1268A
3.00 A 13.08 A 3.17 A
3.00 A 13.07 A 2.92 A
3.00 A 12.88 A 3.17 A
3.00 A 12.87 A 2.92 A
40.00 A 36.00 A 29.02 A
40.00 A 35.99 A 28.77 A
Note1: For more information, see the Power Consumption in Appendix B.
Note2: For more information on calculating power consumption, please refer to the Power Consumption in Appendix B.
Note3: These values indicate the maximum current provided by the power supply. This value is limited by the carrying capacity for that rail. See
the Maximum Current Carrying Capacity per Slot specification for more information.
MAXIMUM CURRENT CARRYING CAPACITY PER SLOT
3.3 V rail
5 V rail
24 V rail
6 A
3.75 A
1.6 A

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EX1200A Series Introduction 15
POWER SPECIFICATIONS (CONTINUED)
INPUT POWER RATING
EX1202A/EX1206A
EX1208A
230 VA
1380 VA
LINE VOLTAGE
90 V to 250 V
LINE FREQUENCY
Manually set to 50 Hz or 60 Hz (default)
LXI SPECIFICATIONS
LXI COMPLIANCE
LXI Version 1.4 Specification with Extended functions
LXI Wired Trigger Bus, LXI Event Messaging, LXI Clock Synchronization,
LXI Timestamped Data, LXI Event Logs
EVENT RESPONSE TIMES
Minimum Typical Maximum
Event Source → Trigger Destination
LXI → LXI
LXI → DIO
LXI → LAN
LXI → BPL
DIO → LXI
DIO → DIO
DIO → LAN
DIO → BPL
LAN → LXI
LAN → DIO
LAN → LAN
LAN → BPL
BPL → LXI
BPL → DIO
BPL → LAN
BPL → BPL
48 ns 54 ns 58 ns
34 ns 38 ns 44 ns
1.4 ms 1.45 ms 1.5 ms*
75 ns 80 ns 85 ns
175 ns 180 ns 185 ns
160 ns 165 ns 170 ns
1.4 ms 1.45 ms 1.5 ms*
200 ns 205 ns 215 ns
3.6 ms 3.8 ms 4.5 ms
3.6 ms 3.8 ms 4.5 ms
15 ms 17 ms 25 ms*
3.8 ms 4.0 ms 4.8 ms
74 ns 79 ns 84 ns
64 ns 69 ns 74 ns
1.6 ms 1.65 ms 1.7 ms*
10 ns 15 ns 20 ns
* The maximum time for events routed to the LAN depend on many factors (network traffic, bandwidth, etc.) and can vary dramatically .
TIMESTAMP ACCURACY
200 µs
CLOCK SPECIFICATIONS
Clock oscillator accuracy
Synchronization accuracy
Timestamp
Accuracy
Resolution
±50 ppm
Reports “synchronized” when < ±200 µs of the 1588 master clock
As good as time synchronization down to 50 ns
25 ns

VTI Instruments Corp.
16 EX1200A Series Introduction
EX1200A SERIES 1 U, FULL RACK MAINFRAME DIMENSIONAL DIAGRAM

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EX1200A Series Introduction 17
EX1200A SERIES 3 U MAINFRAME DIMENSIONAL DIAGRAM

VTI Instruments Corp.
18 EX1200A Series Introduction
EX1200A SERIES DMM SPECIFICATIONS
GENERAL SPECIFICATIONS
MODEL
EX1200-2165
EX1200-2365
6.5 Digit DMM for use with EX1206A
6.5 Digit DMM for use with EX1208A
MEASUREMENT FUNCTIONS
DC voltage (DCV), true rms AC voltage (ACV)
DC current (DCI), true rms AC current (ACI)
2-wire ohms (2W-R), 4-wire ohms (4W-R)
COOLING
Recommended airflow
5.9 L/s (12.5 CFM) minimum
ENVIRONMENTAL
Operating temperature
Operating altitude
Operating humidity
Storage temperature
Storage altitude
Storage humidity
Shock and vibration
0 °C –55 °C
10,000 ft (3,000 m) maximum
5% - 95% non-condensing @ 0°C - 30°C, 5% - 75% non-condensing @ 30 °C –40 °C,
5% - 45% non-condensing @ 40 °C –50 °C (per 3.8.2 of MIL-PRF-28800F Class 3)
-40 °C –70 °C
15,000 ft (4,500 m) maximum
5% –95%, non-condensing
Per 3.8.5 of MIL-PRF-28800F, Class 3
WARM-UP TIME
30 min
MEMORY
131,071 readings (with timestamp)*.Timestamp is relative to a trigger event with
microsecond resolution.
* 209,715 readings with no timestamp, 131,071 readings with timestamp, 52,428 readings in debug mode
SAVED STATES
1 user configuration state in non-volatile memory
LINE FREQUENCY
Manually set to 50 Hz or 60 Hz (default)
LIMITS
Programmable lower and upper limit values
READING BUFFER STATISTICS
Count, Minimum, Maximum, Average
TRIGGER
Type
Automatic or programmable delay
MAXIMUM NON-DESTRUCTIVE INPUTS
SIGNAL
CAT-I INPUTS LIMIT
HI or Sense HI to LO
HI or Sense HI to Guard
HI or Sense HI to Chassis (GND)
LO or Sense LO to Guard
LO or Sense LO to Chassis (GND)
Guard to Chassis (GND)
Maximum common mode voltage
Using external probe
Current input protection
450 V
450 V
450 V
200 V
450 V
450 V
450 V
1.5 kV
3.15 A, 250 V fast-acting fuse, externally accessible
NOTE All accuracy specifications on the following pages are after 30 minute warm-up with trigger auto-delay,
range auto-delay, and auto-zero ON.
TCal , is the temperature at which the DMM was calibrated as reported by the DMM’s internal
temperature sensor.
The DMM is calibrated at approximately TCal = +32 °C ± 5 °C internal temperature (see the DMM
calibration log file for the exact temperature)

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EX1200A Series Introduction 19
RESOLUTION
INTEGRATION TIME (PLC)
60 HZ APERTURE TIME
50 HZ APERTURE TIME
RESOLUTION
10
167 ms
200 ms
6 ½ digits
1.0
16.7 ms
20 ms
5 ½ digits
0.1
1.67 ms
2 ms
4 ½ digits
< 0.01
0.167 ms
0.2 ms
3 ½ digits
Aperture Time is programmable from 100 µs to 2 s
PLC = Aperture Time * Line Frequency
The driver only supports settings that correspond to 10 PLC, 1.0 PLC, 0.1 PLC, and 0.01PLC
DC VOLTAGE –1YEAR ACCURACY
RANGE
RESOLUTION
INPUT
RESISTANCE*
TCAL 5 °C
0°C TO +55 °C
%READING
%RANGE
<30%RANGE
>30%RANGE
100 mV, 6 ½ digit
0.1 µV
10 G, 10 M
0.0150%
0.0060%
15.0 µV
30.0 µV
1 V, 6 ½ digit
1.0 µV
10 G, 10 M
0.0060%
0.0010%
30.0 µV
300.0 µV
10 V, 6 ½ digit
10.0 µV
10 G, 10 M
0.0035%
0.0007%
300.0 µV
3.0 mV
100 V, 6 ½ digit
100.0 µV
10 M
0.0050%
0.0009%
3.0 mV
30.0 mV
300 V, 6 ½ digit
100.0 µV
10 M
0.0055%
0.0035%
30.0 mV
30.0 mV
100 mV, 5 ½ digit
1.0 µV
10 G, 10 M
0.0150%
0.0068%
15.3 µV
33.0 µV
1 V, 5 ½ digit
10.0 µV
10 G, 10 M
0.0060%
0.0011%
33.0 µV
330.0 µV
10 V, 5 ½ digit
100.0 µV
10 G, 10 M
0.0035%
0.0008%
330.0 µV
3.3 mV
100 V, 5 ½ digit
1 mV
10 M
0.0050%
0.0010%
3.3 mV
33.0 mV
300 V, 5 ½ digit
1 mV
10 M
0.0055%
0.0037%
33.0 mV
33.0 mV
100 mV, 4 ½ digit
10.0 µV
10 G, 10 M
0.0150%
0.0075%
15.6 µV
36.0 µV
1 V, 4 ½ digit
100.0 µV
10 G, 10 M
0.0060%
0.0012%
36.0 µV
360.0 µV
10 V, 4 ½ digit
1 mV
10 G, 10 M
0.0035%
0.0009%
360.0 µV
3.6 mV
100 V, 4 ½ digit
10 mV
10 M
0.0050%
0.0011%
3.6 mV
36.0 mV
300 V, 4 ½ digit
10 mV
10 M
0.0055%
0.0040%
36.0 mV
36.0 mV
*Selectable input resistance to support external high-voltage probe. 10 GΩ Typical; > 1 GWorst Case - 10.0 MΩ  1%.
Over-range: 20% of range, except 300 V range
Normal Mode Rejection Ratio (NMRR) at power line frequency  0.1%: 60 dB for 1 PLC, 10 PLC, 100 PLC.
Common Mode Rejection Ratio (CMRR): 140 dB at DC.
Input bias current: <100 pA typical at 23 °C.
DC CURRENT –1YEAR ACCURACY
RANGE
RESOLUTION
MAXIMUM
BURDEN
VOLTAGE*
TCAL 5 °C
0°C TO +55 °C
%READING
%RANGE
<30%RANGE
>30%RANGE
1 mA, 6 ½ digit
1 nA
<0.1 V
0.0500%
0.0100%
396 nA
4.35 uA
10 mA, 6 ½ digit
10 nA
<0.1 V
0.0500%
0.0060%
4.35 uA
43.5 µA
100 mA, 6 ½ digit
100 nA
<0.6 V
0.0500%
0.0060%
43.5 µA
435 µA
1 A, 6 ½ digit
1.0 µA
<0.4 V
0.0700%
0.0070%
435 µA
4.40 mA
3 A, 6 ½ digit
1.0 µA
<0.9 V
*0.1000%
0.0060%
4.40 mA
4.40 mA
1 mA, 5 ½ digit
10 nA
<0.1 V
0.0500%
0.0105%
399 nA
4.38 µA
10 mA, 5 ½ digit
100 nA
<0.1 V
0.0500%
0.0061%
4.38 µA
43.8 µA
100 mA, 5 ½ digit
1.0 µA
<0.6 V
0.0500%
0.0061%
43.8 µA
438 µA
1 A, 5 ½ digit
10.0 µA
<0.4 V
0.0700%
0.0072%
438 µA
4.42 mA
3 A, 5 ½ digit
10.0 µA
<0.9 V
*0.1000%
0.0061%
4.42 mA
4.42 mA
1 mA, 4 ½ digit
100 nA
<0.1 V
0.0500%
0.0110%
402 nA
4.41 µA
10 mA, 4 ½ digit
1.0 µA
<0.1 V
0.0500%
0.0062%
4.41 µA
44.1 µA
100 mA, 4 ½ digit
10.0 µA
<0.6 V
0.0500%
0.0062%
44.1 µA
441 µA
1 A, 4 ½ digit
100.0 µA
<0.4 V
0.0700%
0.0073%
441 µA
4.44 mA
3 A, 4 ½ digit
100.0 µA
<0.9 V
*0.1000%
0.0062%
4.44 mA
4.44 mA
*Add 0.15% of reading above 2 A.
Over-range: 20% of range, except 3 A range