DTS SLICE MICRO, SLICE NANO User Manual

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SLICE User’s Manual

Version 1.0i

July 2017

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SLICE User’s Manual July 2017

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Table of Contents

1. Contacting Technical Support ..................................................................................... 4

2. SLICE Overview ........................................................................................................ 5

2.1. SLICE MICRO and SLICE NANO ............................................................................ 5

2.2. SLICE Modular Concept ....................................................................................... 5

2.3. SLICE Basic Hardware Components ...................................................................... 7

2.3.1. Base+ SLICE .............................................................................................. 7

2.3.2. Bridge SLICE .............................................................................................. 9

2.3.3. IEPE SLICE ................................................................................................. 9

2.3.4. ACCEL SLICE ............................................................................................ 10

2.3.5. ARS PRO SLICE ......................................................................................... 10

2.3.6. Battery SLICE ........................................................................................... 10

2.3.7. Stack Extender ......................................................................................... 11

2.3.8. End-of-Chain (EOC) Terminal ...................................................................... 11

2.3.9. SLICE Distributor ....................................................................................... 12

2.3.10. SLICE USB Interface .................................................................................. 12

2.3.11. SLICE Ethernet Interface ............................................................................ 13

2.3.12. SLICE MICRO and NANO Connectors ............................................................ 14

2.4. Batteries ......................................................................................................... 14

2.4.1. 9.6 V Rechargeable NiMH Batteries .............................................................. 14

2.4.2. 11.1 V Rechargeable Lithium-Polymer Batteries ............................................ 15

2.5. SLICE Software ................................................................................................ 15

3. Mounting and Connecting SLICE Hardware ................................................................. 16

3.1. General Connection Guidelines ........................................................................... 16

3.2. Guidelines for High Shock and Vibration Testing ................................................... 16

3.3. SLICE Connectors and Cables ............................................................................ 17

3.3.1. SLICE Connectors ...................................................................................... 17

3.3.2. SLICE Cables ............................................................................................ 18

3.4. Power Requirements ......................................................................................... 19

3.5. Using the End-of-Chain (EOC) Terminal ............................................................... 20

3.6. Using the SLICE USB Interface ........................................................................... 21

3.7. Using the SLICE Ethernet Interface ..................................................................... 22

3.8. Using the SLICE Distributor ............................................................................... 23

4. Sensor ID and Supported Sensor Types ..................................................................... 24

4.1. Sensor ID ........................................................................................................ 24

4.2. Supported Sensor Types.................................................................................... 25

5. Software ................................................................................................................ 26

5.1. Basic Requirements .......................................................................................... 26

5.2. Data Collection Concepts ................................................................................... 26

5.2.1. Standalone Operation ................................................................................ 26

5.2.2. Data Collection Modes ................................................................................ 26

5.2.2.1. Circular Buffer Mode .............................................................................. 26

5.2.2.2. Recorder Mode ..................................................................................... 26

5.2.2.3. Hybrid Recorder Mode ........................................................................... 26

5.2.2.4. Continuous Recorder Mode ..................................................................... 27

5.2.3. Multiple-Event Modes ................................................................................. 27

5.2.4. Auto-Arm Data Collection ........................................................................... 27

6. Powering Up SLICE ................................................................................................. 28

6.1. Status (STS) LED ............................................................................................. 28

6.2. Power (PWR) LED ............................................................................................. 29

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Appendix A: SLICE Technical & Mechanical Specifications ................................................ 30

Appendix B: End-of-Chain (EOC) Terminal ..................................................................... 36

Appendix C: SLICE USB Interface ................................................................................. 37

Appendix D: SLICE Ethernet Interface ........................................................................... 39

Appendix E: SLICE Grounding Recommendations ........................................................... 41

Appendix F: SLICE Bridge Sensor Connections ............................................................... 47

Appendix G: SLICEWare XML File Format ...................................................................... 56

Appendix H: SLICEWare Binary File Format ................................................................... 60

Appendix I: Declaration of CE Conformity ...................................................................... 64

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1. Contacting Technical Support

SLICE systems are designed to be reliable and simple to operate. Should you need assistance, DTS has support engineers worldwide with extensive product knowledge and crash test experience to help via telephone, e-mail or on-site visits.

The best way to contact a DTS support engineer is to submit a request through the DTS Help Center web portal (support.dtsweb.com). You must be registered (support.dtsweb.com/registration) to submit a request (https://support.dtsweb.com/hc/en-

us/requests/new). Registration also enables access to additional self-help resources and

non-public support information.

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2. SLICE Overview

SLICE is an ultra-small, low-power, high-shock-rated data acquisition system. SLICE is a standalone system with microprocessor, memory, sensor excitation and signal conditioning with options for built-in battery and internal sensors. Systems from 3 to hundreds of channels can be built-up in 3 channel increments.

2.1. SLICE MICRO and SLICE NANO

SLICE comes in two sizes:

• SLICE MICRO (42 x 42 mm)

• SLICE NANO (26 x 31 mm)

They have the exact same function and circuit boards inside. SLICE MICRO has builtin connectors; SLICE NANO has wires with connectors.

2.2. SLICE Modular Concept

Modular system – Plug multiple SLICEs onto Base+ SLICE to make a Stack

• Each SLICE “Stack” can accommodate 8 sensor input SLICES. Each Bridge

SLICE has 3 analog input channels. You may want multiple “Stacks” if more channels are needed or placement in different locations makes sense for your application.

• Each SLICE “Stack” consists of 1 Base+ SLICE and up to 8 additional sensor

input SLICEs.

26 mm

31 mm

42 mm

SLICE NANO

SLICE MICRO

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Example SLICE set-up with multiple Stacks:

• SLICE Stacks are mounted to the device under test and chained together.

• The End-of-Chain Terminal can be connected to a trigger, battery, or other

devices.

• The beginning of the chain is connected to the SLICE Interface Device, SLICE

Ethernet Interface, SLICE USB Interface or directly to the PC. PC can be disconnected after arming for standalone operation.

• Up to 4 SLICE Stacks can be in any one chain.

• SLICE Distributor (not shown) allows for up to 4 SLICE chains for hundreds of

channel in one set-up.

SLICE BRIDGE

modules

Up to (8) per “Stack”

SLICE BASE module

(1) per “Stack”

SLICE NANO

Stack

SLICE MICRO

Stack

SLICE Interface

Device

PC provides USB control

Many options:

• Battery

• Trigger input

• Monitor status

• Up to 4 Stacks

Device Under Test

Example: Crash dummy, aircraft wing, vehicle chassis, industrial machinery, bridge structure, etc.

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2.3. SLICE Basic Hardware Components

Below are the basic components of a SLICE system. You will have some subset of these depending on your application or what was ordered.

The table below provides an overview of the types of SLICE modules available. Some modules are only available in the MICRO or NANO version.

SLICE Module

Description

MICRO

NANO

Base+ SLICE

One needed for each SLICE Stack

Yes

Bridge SLICE

3 channels of piezo-resistive and voltage sensor inputs.

Yes

IEPE SLICE

3 channels of piezo-electric sensor inputs

Yes

Accel SLICE

Bridge SLICE with integrated 3-axis accelerometer

Yes

ARS SLICE

Bridge SLICE with integrated 3-axis Angular Rate Sensor

Yes

Stack Battery

2-cell LiPo battery connected to bottom of Base+ SLICE

Yes

2.3.1. Base+ SLICE

See Appendix A for detailed specifications. See the DTS Support site for information on how to update firmware.

You must have at least one Base+ SLICE for any SLICE system. The Base+ SLICE is at the bottom of the SLICE Stack and has these components:

• Microprocessor

• 16 GB flash data memory standard (15 GB available for data storage)

• USB hub

• Power conditioning

• Control signals

A Base+ SLICE MICRO is shown below.

Note: For original Base SLICE specifications, see Version 1.0g of this manual.

SLICE Bus

Up to PC

SLICE Bus

Down to next

Base+ SLICE

Connector to Bridge SLICE or

other SLICE

input module

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# of

Channels*

Maximum Sampling Rate

(per channel)

500,000 samples per second (sps)

400,000 sps

300,000 sps

200,000 sps

* All channels are recorded even if they are not programmed.

How to Calculate Maximum Storage Times

With 15 GB available for data storage, there are a total of 7.5 G samples available in each Base+ SLICE (1 sample = 2 bytes).

To determine the maximum recording time, divide the number of samples by the product of the sampling rate and the number of available channels in the Stack.

7,500,000,000 = # of seconds Sampling rate (sps) X # of channels in Stack

Example 1: 10,000 sps using a 9-channel SLICE Stack

7,500,000,000 = 83,333 sec (23 hours) 10,000 X 9

Example 2: 100,000 sps using a 6-channel SLICE Stack

7,500,000,000 = 12,500 sec (3.47 hours) 100,000 X 6

Since the recording capacity of a SLICE system is very large, try to limit sampling rates and durations to the minimum necessary to avoid large and cumbersome data files. Large files take longer to download and may also be time-consuming to post-process or difficult to share with colleagues. Use of the Region of Interest (ROI) download can save a great deal of time if implemented properly.

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2.3.2. Bridge SLICE

See Appendix A for detailed specifications.

Up to 8 Bridge SLICEs can be stacked on top of the Base+ SLICE. Each Bridge SLICE has these components:

• 3 channels of analog input

• Sensor excitation

• Software adjustable gain, anti-alias filters, offset, and shunt check

• TEDS sensor ID

A Bridge SLICE MICRO is shown below.

2.3.3. IEPE SLICE

See Appendix A for detailed specifications.

Features:

• 3 input channels

• One 2.2 mA constant-current source per channel at up to 24 V

• Software adjustable gain, anti-alias filters and offset

• TEDS sensor ID

An IEPE SLICE MICRO is shown below.

Sensor input channels

Connector to

next SLICE

input module

Connector to next SLICE input module

Sensor input channels

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2.3.4. ACCEL SLICE

The ACCEL SLICE has Bridge SLICE electronics with the addition of a built-in 3axis accelerometer. The following specifications apply:

• Options from 25 to 500 g

• DC response

2.3.5. ARS PRO SLICE

The ARS SLICE has Bridge SLICE electronics with the addition of a built-in 3-axis angular rate sensor. The following specifications apply:

• Uses DTS ARS PRO (see http://dtsweb.com/products/dtsars.php)

• Options from 300 to 8000 deg/sec

• DC response

2.3.6. Battery SLICE

The Battery SLICE is connected to the bottom of the Base+ SLICE. It is only available in the SLICE NANO version. The Battery SLICE is only a back-up battery in case main power is lost. Specifications:

• 2-cell LiPo design, with charging directly from Base+ SLICE

• Only 3.5 mm thick

Accel and ARS

SLICEs can be

positioned in any

order in a SLICE MICRO Stack

ARS SLICE

ACCEL SLICE

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2.3.7. Stack Extender

The Stack Extender is only available for the SLICE NANO package. The Stack Extender allows the user to create a flatter, longer package.

2.3.8. End-of-Chain (EOC) Terminal

See Appendix B for detailed specifications.

The EOC Terminal provides the easiest method to attach a battery, trigger signal and status lamp to the SLICE system. It is ruggedized for high shock use.

Maximum channels:

1 chain x 2 Stacks x 8 Bridge SLICEs x 3 chan/Bridge = 48 channels

Connections:

• 2 SLICE Stack chain

• 9 to 15 VDC input power

• ON signal

• Status output, start record input and event input signals

Stack Extender

• Example: 12 channel system

• 1 Base+ SLICE

• 4 Bridge SLICEs

To DN port on Base+

SLICE MICRO or NANO

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2.3.9. SLICE Distributor

See the SLICE Distributor User’s Manual for detailed information.

The SLICE Distributor serves as a single interface supporting power, Ethernet communications and status signals for an extended SLICE system. It supports in excess of 200 channels via four SLICE MICRO/NANO chains (four stacks per chain), and is designed to integrate in-dummy and withstand high shock environments. It supports 9-18 VDC input power and back-up battery input.

2.3.10. SLICE USB Interface

See Appendix C for detailed specifications.

The SLICE USB Interface allows the connection of one SLICE chain. It is meant for bench-top use and is not ruggedized.

Maximum channels:

1 chain x 4 Stacks x 8 Bridge SLICEs x 3 chan/Bridge = 96 channels

Connections:

• 1 SLICE Stack chain

• USB communications

• 9 to 15 VDC input power

• ON/OFF switch

• Manual Start/Event

• AUX input (battery, trigger, etc.)

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2.3.11. SLICE Ethernet Interface

See Appendix D for detailed specifications.

The SLICE Ethernet Interface allows the connection of two SLICE chains. It is meant for bench-top use and is not ruggedized.

Maximum channels:

2 chains x 3 Stacks x 8 Bridge SLICEs x 3 chan/Bridge = 144 channels

Connections:

• 2 SLICE Stack chains

• Ethernet communications

• 9 to 15 VDC input power

• ON/OFF switch

• Manual Start/Event

• AUX input (battery, trigger, etc.)

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2.3.12. SLICE MICRO and NANO Connectors

See Section 3 for more connector information.

SLICE systems use lightweight, rugged plastic connectors with reliable, gold plated contacts. These are a MIL-STD-type pin and socket configuration where the socket is exposed, instead of the pin, which is mechanically more robust. For some bench-top units, LEMO-style as well as industry standard USB, Ethernet and SubD connectors are used.

A typical SLICE rugged plastic connector is shown below.

2.4. Batteries

DTS offers some commercial-off-the-shelf batteries for operation of SLICE systems. Batteries must be disconnected from the SLICE system before connecting to a charger.

2.4.1. 9.6 V Rechargeable NiMH Batteries

• Allows up to 40 min runtime with a 6 channel SLICE System.

• Package of 4 batteries ensures you’ll always have back-ups ready to use.

Finger actuated retention latch

Recessed pins

Exposed sockets

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2.4.2. 11.1 V Rechargeable Lithium-Polymer Batteries

• Available in 3 capacities: 2200, 4400, and 6600 mAh

2.5. SLICE Software

See the SLICEWare User’s Manual for detailed information. Appendices G and H provide information regarding file formats. See the DTS Support site for information on how to update firmware.

The SLICEWare software application allows for easy:

• Test set-up

• Sensor database management

• Real-time sensor check-out

• Test execution

• Data download and viewing

• Data export

A SLICE API (Application Programmers Interface) driver is also available.

Please contact technical support (support.dtsweb.com) for the latest update to your software version.

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3. Mounting and Connecting SLICE Hardware

This section gives details on how to connect your SLICE hardware. Choose the connection method you have from the options below for the quickest information.

3.1. General Connection Guidelines

Great care should always be taken when connecting any power, switch, sensor or any other device to the SLICE system.

• DO NOT exceed the rated voltage input range for the device. Whenever

possible use the power supply or battery pack supplied with your SLICE system.

• DO NOT connect directly to vehicle power or other noisy power sources.

• ALWAYS disconnect the battery from the SLICE system before connecting to a

battery charger.

• ALWAYS use SLICE NANO with a heat sink as the SLICE NANO case is very thin

aluminum with very little heat sinking ability. Never use SLICE NANO mounted to a thermally non-conductive surface like wood or plastic.

• Refer to proper grounding procedures described in Appendix E.

• Check that all cables show no signs of physical damage.

• Be sure all sensors have their cable shields ungrounded at the sensor end and

grounded at the SLICE input connector. (SLICE DAS units have grounded enclosures. Sensors should be floating.)

3.2. Guidelines for High Shock and Vibration Testing

SLICE MICRO and SLICE NANO components can generally be used in test environments with maximum acceleration levels as high as 500 g. If you have purchased a specialized high g SLICE NANO system, it can be used in environments up to 5,000 g if proper care is taken. Please contact DTS if you have any questions about using SLICE in high g environments.

Proper mounting of the SLICE system, cables, and accessories is critical to successful testing.

• DO NOT mount SLICE components in an area where they may be directly

impacted by an object.

• Use damping material whenever possible to help protect the SLICE system

from excessive shock or vibration, but remember that SLICE NANO requires a heat sink.

• Be sure that connectors and wiring are properly secured.

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3.3. SLICE Connectors and Cables

3.3.1. SLICE Connectors

SLICE is an ultra small data acquisition system. One challenge with a small system is electrical connections. Although connectors such as Bendix, Amphenol, and LEMO are common for instrumentation, all of these are much too large to be practical for SLICE.

The SLICE system uses circular plastic connectors manufactured by Omnetics Corporation (www.omnetics.com). These connectors use high-quality, machined contacts and are used in many military, aerospace and other high shock applications. Connectors are available direct from Omnetics or can be purchased from DTS.

Below are the connector types used by SLICE. See Appendix A for complete DTS part number information.

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3.3.2. SLICE Cables

DTS provides a number of different SLICE cable options depending on the connection needs. SLICE Stack-to-Stack connection cables are shown below.

SLICE MICRO Base units can be connected together via a daisy-chain cable. SLICE NANO Base units can be connected to each other directly or via a daisychain extension cable.

13000-3005x: SLICE MICRO Chain Cable

13000-3006x: SLICE NANO Chain Cable

Connections less than 8 inches Connections from ≥8 inches to ≤2 m

A longer, more robust version of the SLICE NANO Chain Cable is available for connections from >2 m to ≤5 m (DTS P/N 13000-3007x). (Note: the rated maximum separation between Stacks is 5 m.)

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3.4. Power Requirements

The SLICE system runs on DC power. Acceptable input power can range from 9 V minimum to 15 or 18 V maximum, depending on the accessories used with your system. Do not exceed the maximum input power for the accessory you are using.

To calculate the rough power needs for a particular system, use the information below:

POWER RE QUIREMENTS

10 V POWER INPUT /5 V SENSOR EXCITATION IDLE RECO RDING

BASE SLICE 40 mA 110 mA

BRIDGE SLICE 2 mA 55 mA

SENSOR LOAD (350 ohm/5 V SENS OR EXCITATION ) 0 mA 50 mA

SINGLE STACK POWER C ONSUMPTION AT 5 V SENS OR

EXCITATION

TOTAL

BASE (QTY) 1

BRIDGE (QTY) 2

SENSOR LOAD (% of 350 ohm) 100

IDLE C URRENT 44 mA

IDLE P OWER 330 mW

RECORD CURRENT 320 mA

RECORD POWER 2400 mW

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3.5. Using the End-of-Chain (EOC) Terminal

A diagram showing connections using the EOC Terminal is shown below.

Notes:

• Although this shows a SLICE MICRO system, connections with a SLICE NANO

are similar.

• The EOC Terminal is a shock rated item.

• Voltage input can be provided via the included power supply, a battery or any

voltage source between 9 and 15 VDC. Warning: Do not exceed the 15 VDC

input voltage range as damage may result.

• The ON terminal must be connected to the GND on the EOC Terminal for the

SLICE unit to turn on.

• If you connect an LED between the STS and GND terminals, you will get a

Status light when the system is armed.

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See Appendix B for detailed information on the SLICE End-of-Chain Terminal.

3.6. Using the SLICE USB Interface

The SLICE USB Interface is designed for bench-top, non-rugged use. See the example diagram below.

To DN port on the last

Base+ SLICE MICRO

or NANO in a SLICE

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Notes:

• Although this shows a SLICE MICRO, connections with a SLICE NANO are

similar.

• The SLICE USB Interface is NOT a shock rated item.

• Voltage input can be with the included power supply a battery, or any voltage

source between 9 and 15 VDC. Warning: Do not exceed the 15 VDC input

voltage range as damage may result.

• The AUX connector is a standard D-sub HD15. This can be used to hardwire a

Start Record or Event switch or monitor the Status line.

3.7. Using the SLICE Ethernet Interface

The SLICE Ethernet Interface is similar to the SLICE USB Interface. The main difference is that the SLICE Ethernet Interface has an Ethernet connection to the PC instead of a USB connection. This allows for a longer communications cable between the PC and the SLICE system. The SLICE Ethernet Interface can also connect 2 SLICE chains for large system configurations. See the example diagram below.

Notes:

• Although this shows a SLICE MICRO, connections with a SLICE NANO are

similar.

• The SLICE Ethernet Interface is NOT a shock rated item.

• Voltage input can be with the included power supply a battery, or any voltage

source between 9 and 15 VDC. Warning: Do not exceed the 15 VDC input

voltage range as damage may result.

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• The AUX connector is a standard D-sub HD15. This can be used to hardwire a

Start Record or Event switch or monitor the Status line.

3.8. Using the SLICE Distributor

The SLICE Distributor allows for the connection of up to 4 SLICE chains and converts the communications signals from USB to Ethernet. This allows for a longer communications cable between the PC and the SLICE system. The most common application for the SLICE Distributor is for an embedded system with a high channel count as shown for the in-dummy (manikin) configuration below.

SLICE Application Diagram: 42-channel integrated

SLICE NANO for H3-50% Dummy

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4. Sensor ID and Supported Sensor Types

This section covers basic information regarding SLICE compatible sensors and sensor ID. More detailed information regarding sensor connections can be found in Appendix F.

The diagram below shows a common 4-wire bridge sensor connection to a Bridge SLICE input channel.

4.1. Sensor ID

Sensor ID is also referred to as electronic ID (EID). The function of EID is for the SLICE hardware to automatically read and determine what sensor is attached to each sensor input channel.

SLICE uses EID chips from Maxim IC, model DS2401 (see http://www.maxim-

ic.com/quick_view2.cfm/qv_pk/2903). To make soldering of the EID easier, DTS

provides EID microcards, which have a chip scale packaged DS2401 soldered to a circuit board with wires attached (see below).

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4.2. Supported Sensor Types

The Bridge SLICE supplies 5 VDC excitation up to 20 mA and supports many types of accelerometers, load cells, pressure sensors and other sensor types. The following general sensor types are supported:

• Full (4-wire) or half bridge (2- or 3-wire) resistive and piezo-resistive types

• Voltage input: Input range 0.1 to 4.9 V; larger range with voltage expander

circuit

• Conditioned sensors with 5 V excitation and 2.5 V centered signal output

• Common piezo-electric sensor types

If you have questions regarding what sensors are supported, please contact

support.dtsweb.com and provide the sensor manufacturer and model number if

available.

EID “microcard” soldered to pins 4 and 6

Omnetics 7-pin Sensor Connector

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5. Software

See the SLICEWare User’s Manual for detailed information. Appendices G and H provide information regarding file formats. See the DTS Support site for information on how to update firmware.

5.1. Basic Requirements

SLICEWare is a Windows® based program. Minimum PC specifications are:

• Windows Vista, or Windows 7. 32- and 64-bit versions are available.

• 1 GHz or faster processor

• 2 GB RAM minimum. More RAM is important for longer/higher sample rate data

acquisition.

• 100 MB disk space for Software plus storage for test data

• 1024 x 768 minimum screen resolution

5.2. Data Collection Concepts

This section discusses the basics of data collection with SLICE.

5.2.1. Standalone Operation

SLICE is a standalone data logger. This means that once it is armed, the PC can be disconnected if desired. After receiving a Start Record or Trigger signal, the SLICE autonomously collects data, storing it to flash memory with no user interaction. After the test, the user can reconnect the PC to download the data.

There is also a real-time mode in the SLICEWare software application that allows the user to check channel inputs on an oscillograph-looking screen. (This data can be logged.)

5.2.2. Data Collection Modes

SLICE supports four data collection modes: Circular Buffer, Recorder, Hybrid Recorder, and Continuous Recorder. (Note: SLICEWare cannot simultaneously display the data while the system is recording.)

5.2.2.1. Circular Buffer Mode

In circular buffer mode, the user can program SLICE to record pre-trigger data. For example, the test set-up can specify to record x seconds pretrigger and x seconds post trigger. Time Zero (T=0) is marked when the trigger signal is received.

5.2.2.2. Recorder Mode

Recorder mode starts when a Start Record signal is received and continues for the time specified in the test set-up. If a trigger signal is received sometime after the Start Record, this marks the T=0 point.

5.2.2.3. Hybrid Recorder Mode

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Hybrid Recorder mode starts when a Start Record signal is received and continues until the unit receives a trigger signal and then records for the post-trigger time specified by the host software. The trigger signal marks the T=0 point and all data recorded is available for download.

5.2.2.4. Continuous Recorder Mode

Continuous Recorder mode starts when a Start Record signal is received and continues until the Start Record signal is released. The unit will then re-arm for another event. The LEDs on the unit will flash blue slowly then rapidly, and then the STATUS LED will become solid blue, indicating the unit is fully armed. The unit will continue to record new events until it records the number of events specified by the host software. If a trigger signal is received after the unit has re-armed the unit will disarm and no longer attempt to re-arm.

5.2.3. Multiple-Event Modes

All SLICE data collection modes have an equivalent multi-event arming mode. A unit armed in a multiple-event mode will re-arm when an event completes. The unit will stop re-arming when the number of events specified by the host software has been recorded.

5.2.4. Auto-Arm Data Collection

SLICE can be placed in an auto-arm mode that will cause the unit to arm automatically when the power cycled. The unit can be placed into this mode and record with any data collection mode.

NOTE:

An event or trigger signal applied anywhere in the SLICE chain is distributed throughout the system. This applies to level trigger as well.

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6. Powering Up SLICE

This section covers what to expect when powering up a SLICE system and running a test. The LEDs on the Base+ SLICE indicate the status of the system.

To initialize SLICE MICRO/NANO systems without power back-up:

1. Apply power to the Base.

2. Connect the SLICE system to the PC via the comm cable.

3. Initialize the software to enable communication.

If your system includes a battery (SLICE NANO Stack Battery or SLICE HG system), it is important that the internal capacitors be allowed to charge briefly before system initialization. An ON hardware signal is used to initialize the SLICE system; be sure to disable the ON signal prior to applying power.

To initialize SLICE NANO/HG systems that include power back-up:

1. Remove the hardware ON signal from your system.

2. Apply power to the Base.

3. Wait ~15 seconds to allow the internal capacitors to charge briefly.

4. Enable the hardware ON signal and connect the SLICE system to the PC via the comm

cable. (The LEDs will complete the power up sequence as soon as the ON signal is applied.)

5. Initialize the software to enable communication.

6.1. Status (STS) LED

Action

Result

Power up

Communicating with PC Recording Data (Recorder Mode) -or- Armed (Circular Buffer)

Armed in Recorder Mode

Unit received Event

Idle

Page 29

SLICE User’s Manual July 2017

support.dtsweb.com 29 Version 1.0i

The status LED is red, green or blue. At system power up, the LED cycles from red to green to blue followed immediately by the power LED boot-up sequence.

The status LED indicates communication and arm status.

• When the unit is not armed, the status LED will blink green when handling a

command from the PC.

• For Recorder Mode o When the unit is first armed, the LED will go solid blue to indicate that it

is waiting for the START RECORD signal but not taking data.

o When it receives the START RECORD signal, the LED will turn green to

indicate that it is actively recording data.

o The LED will turn off when data collection has completed. o If an EVENT signal is received while the unit is recording data, the LED

will turn red and then turn off when data collection has completed.

• For Circular Buffer Mode o When the unit is armed, the LED will go solid green to indicate that it is

collecting data and waiting for the EVENT signal.

o When an EVENT signal is received the LED will turn red and then turn off

when data collection has completed.

6.2. Power (PWR) LED

Action

Result

(not armed)

Power up

Connected to USB power Only

Connected to external power – power is OK

Connected to external power – power is low

The power LED is red, green or blue.

• At power up, the LED cycles from red to green to blue immediately after the

status LED has completed its boot-up sequence.

• When USB is connected, the LED will turn blue.

• With OK external power, the LED will turn green.

• With low external power, the LED will turn red.

• These transitions do not happen if the unit is armed.

Page 30

Specifications

BASE+ SLICE (NANO & MICRO)

One (1) required per stack – system microprocessor & memory

Size: MICRO 42 x 42 x 8 mm (1.65 x 1.65 x 0.32”)

Mass: MICRO 28 g (0.99 oz), NANO 14.2 g (0.50 oz) Connectors: Omnetics, circular locking, 12-pin

Number of

SLICEs

Per Stack*

Total

Channel

Count

1 3 ch 500000 2 6 ch 400000 3 9 ch 300000 4 12 ch 200000 5 15 ch 200000 6 18 ch 200000 7 21 ch 200000 8 24 ch 200000

Maximum

Sampling Rate

SPS/Channel

Compatibility: BASE+ works will all legacy NANO & MICRO

ENVIRONMENTAL

Military Standard: MIL-STD-810E Operating Temp: -40° to 60°C (-40° to 140°F) (Method 501,502) Altitude: -40°C @ 15240 m (50000 ft ) (Method 500) Vibration (Random): Exceeds 810-E vibration (Method 514)

Humidity: 95% RH non-condensing Shock: 500 g, 4 msec half sine

DATA RECORDING

Modes: Recorder, circular buffer, multiple event, arm on

Memory: 16 GB non-volatile flash per SLICE stack Sample Rate: Minimum 10 sps per channel <See Chart for Max: Up to 200k sps on ≤24 channels per stack

*Not including the one required BASE+ SLICE per stack

TRIGGERING

Hardware Trigger: Contact closure & TTL logic-level (active low) Level Trigger: Positive and/or negative level on any active

POWER

Supply Voltage: 9-15 VDC; >11 VDC when using Battery SLICE

SERVICES

24/7 Worldwide Tech Support ISO 17025 (A2LA) Calibration Onsite Calibration & Training

Current (Maximum): 70 mA @ 12 V plus sensor input SLICEs Power Control: Remote power control input for on/off Protection: Reverse current, ESD

SOFTWARE

Control: SLICEWare, DataPRO, API Operating Systems: Windows® Vista/7/8 (32/64-bit) Communication: USB; Ethernet available via SLICE Distributor

Application Consulting Software Integration OEM/Embedded Applications

Michigan, United States United Kingdom France Japan Asia Pacific

HEADQUARTERS

Seal Beach, California USA

Phone: +1 562 493 0158 Email: sales@dtsweb.com

BRIDGE SLICE (NANO & MICRO)

Three (3) inputs for external sensors

Size: MICRO 42 x 42 x 7 mm (1.65 x 1.65 x 0.32”)

Ma ss: MICRO 25 g (0.88 oz), NANO 13.8 g (0.49 oz) Connectors: Omnetics, circular locking; 3 single-channel

SIGNAL CONDITIONING

Number of Channels: 3 differential, programmable Input Range: ±2.4 V (2.5 V center) Bandwidth: DC to 40 kHz, programmable Gain Range: 1.0-1280, programmable Auto Offset Range: 100% of effective input range Bridge Support: Software controlled half-bridge completion Shunt Check: Emulation method, automatically calculated Sensor ID: Maxim Integrated (Dallas) silicon serial number Linearity (typical): 0.2% (gain 1 to 320), 0.5% (gain >320) Accuracy: 0.5% including reference uncertainty

ANALOG-TO-DIGITAL CONVERSION

Type: 16-bit SAR (Successive Approximation

EXCITATION

Method: Independent regulator for each channel Voltage: 5.0 V, up to 20 mA, short circuit safe Power Management: Shutdown when not armed or recording

POWER

Voltage: Supplied via BASE SLICE Current (Maximum): 110 mA with 350 ohm bridges all channels

ANTI-ALIAS FILTER

Fixe d Lo w Pa ss: 4-pole Butterworth, standard knee frequency at 40 kHz Adju stab le L ow P ass: 5-pole Butterworth set by software from 1 Hz to 40 kHz Response: Meets SAE J211/ISO6487 response corridors

NANO 26 x 31 x 6.5 mm (1.02 x 1.22 x 0.26”)

MICRO integrated, NANO cable assembly

5000 g option (SLICE NANO only)

power-up, and other modes available

Up to 500k sps on ≤3 channels per stack

sensor channel (first level crossing of any programmed sensor triggers system)

(NANO)

NANO 26 x 31 x 5.5 mm (1.02 x 1.22 x 0.22”)

7-pin or 1 three-channel 16-pin

Power varies significantly with sensor load

IEPE SLICE (NANO & MICRO)

Three (3) inputs for external sensors

Size: MICRO 42 x 42 x 7 mm (1.65 x 1.65 x 0.28”)

Mass: MICRO 28 g (0.99 oz), NANO 23 g (0.81 oz) Connectors: 10-32 coaxial (Microdot-compatible)

NANO 26 x 46 x 7 mm (1.02 x 1.81 x 0.28”)

SIGNAL CONDITIONING

Number of Channels: 3 Input Range: 0.5-23.5 V (12 V center) Bandwidth: DC to 40 kHz, programmable Gain Options: 1 or 10, user programmable Auto Offset Range: 100% of effective input range at gain of 1 Sensor ID: Works with EID or “TEDS” equipped sensors

ANALOG-TO-DIGITAL CONVERSION

Type: 16-bit SAR (Successive Approximation

EXCITATION

Current/Voltage: 2.2 mA constant current with 25 V source.

On/Off Control: Shutdown when not armed or recording

Contact DTS for other options if needed.

POWER

Voltage: Supplied via BASE SLICE Current (Maximum): 85 mA with sensors connected to all channels

ANTI-ALIAS FILTER

Fixed Low Pass: 4-pole Butterworth, standard knee frequency

Adjustable Low Pass: 5-pole Butterworth set by software from 1 Hz to

Response: Meets SAE J211/ISO6487 response corridors

at 40 kHz

40 kHz

CALIBRATION

Calibration Supplied: NIST traceable ISO 17025: ISO 17025 (A2LA Accredited) available Service Options: Factory or Onsite, Service Contracts available

ARS SLICE (MICRO only)

Built-in triaxial angular rate sensor

Size: MICRO 42 x 42 x 9 mm (1.65 x 1.65 x 0.35”) Mass: 30 g (1.06 oz) Number of Channels: 3 orthogonal axes Range Options: ±300, ±1500, ±8k deg/sec Bandwidth: 0–2,000 Hz Current (Maximum): 75 mA (power supplied via BASE SLICE)

ACCEL SLICE (MICRO only)

Built-in triaxial accelerometer

Size: MICRO 42 x 42 x 9 mm (1.65 x 1.65 x 0.35”) Mass: 30 g (1.06 oz) Number of Channels: 3 orthogonal axes Range Options: ±25, ±100, ±500 g Bandwidth: 0–400 Hz (±25, ±100 g), 0–5,000 Hz (±500 g) Current (Maximum): 65 mA (power supplied via BASE SLICE)

BATTERY SLICE (NANO only)

Optional back-up battery

Size: NANO 26 x 31 x 4 mm (1.65 x 1.65 x 0.16”) Mass: 7 g (0.25 oz) Charge Status: Backup battery charges when input voltage to

Charge Time: ~15 min. from complete discharge to full charge

Discharge Rate: ~5 seconds with 18 channels (1 Base + 6 Bridges)

BASE SLICE is >11 VDC

(100 mA at input connector on Base)

ACCESSORIES

See website for full line of SLICE NANO & SLICE MICRO accessories

www.dtsweb.com

Specifications subject to change without notice.

Page 31

SLICE NANO Base Pin Assignments

DOWN connector**

(looking into the connector)

Mating connector: DTS

P/N 80000-04030

Mating connector + backshell: DTS P/N 13000-30170

Pin Function

On (contact closure input to ground)

Start (contact closure input to ground)

Event (contact closure input to ground)

Status output (5 V via 10K with respect to ground)

5, 6

7–15 VDC

7, 8, 12

Ground

USB_PWR

USB_DP

USB_DM

** Both cables are 10 cm in length

UP* connector**

(looking into the connector)

Mating connector: DTS P/N 80000-04029

Mating connector + backshell: DTS P/N 13000-30180

Pin Function

On (contact closure input to ground)

Start (contact closure input to ground)

Event (contact closure input to ground)

Status output (5 V via 10K with respect to ground)

5, 6

7–15 VDC

7, 8, 12

Ground

USB_PWR

USB_DP

USB_DM

* to PC

11 12

Page 32

SLICE NANO Bridge Pin Assignments

Channels 1, 2 and 3*

(looking into the connector)

Mating connector: DTS P/N 80000-04019

Mating connector + backshell:

DTS P/N 13000-30310

Mating connector + backshell + ID:

DTS P/N 13000-30120

Function

+ Sig

- Sig

+ Ex

+ ID

5**

- Ex

6**

- ID

7**

Shield

* Three connectors; cables 6, 10

and 14 cm in length

** Pins 5, 6 and 7 are common

Function

+ Sig (Ch 1)

+ ID (Ch 1)

- Sig (Ch 2)

+ Sig (Ch 2)

- Sig (Ch 1)

+ Ex (Ch 1)

- Ex (Ch 1)

+ Ex (Ch 2)

*** One connector; cable 10 cm in length

Function

+ ID (Ch 2)

+ Sig (Ch 3)

+ Ex (Ch 3)

- Ex (Ch 3)

- Ex (Ch 2)

- Sig (Ch 3)

+ ID (Ch 3)

- ID (Ch 1, 2, 3)/Shield

-Ex/-ID/Shield are common

3 5 6

Channels 1-3***

(looking into the connector)

Mating connector: DTS P/N 80000-14031

Mating connector + backshell: DTS P/N 13000-30320

Mating connector + backshell + 3 IDs: DTS P/N 13000-30140

1 4 5

10 13

14 16

Ch 1

Ch 3

Ch 2

Page 33

SLICE NANO Mechanical Specifications

Ø3.2 mm (0.125 in) mounting thru holes x2

Accepts M2.5 (loose fit); 4-40 (free fit); M3 (tight fit)

Weight (+5 g)

Height

Lid

2.6 g

1.5 mm (0.059 in)

IEPE*

23 g

7 mm (0.276 in)

Bridge (1 conn)**

12.6 g

5.5 mm (0.217 in)

Bridge (3 conn)**

13.8 g

5.5 mm (0.217 in)

Base**

14.2 g

6.5 mm (0.256 in)

Battery

7 g (+1 g)

4 mm (0.157 in)

Extended Capacity Battery

20 g

16 mm (0.630 in)

** Includes cable assemblies See the DTS Support site for future updates.

Total Stack Height

mm (inch)

Mounting Screw Length (min)

BH or SHC

M2.5*/M3**

4-40**

13.5 (0.531)

18 mm

3/4"

17.5 (0.689)

22 mm

7/8"

19 (0.748)

25 mm

23 (0.906)

30 mm

1-1/8"

24.5 (0.965)

30 mm

1-1/8"

28.5 (1.122)

35 mm

1-1/4"

30 (1.181)

35 mm

1-3/8"

34 (1.339)

40 mm

1-1/2"

35.5 (1.398)

40 mm

1-3/4"

39.5 (1.555)

45 mm

1-3/4"

41 (1.614)

45 mm

1-3/4"

45 (1.772)

50 mm

46.5 (1.831)

60 mm

50.5 (1.988)

60 mm

2-1/2"

52 (2.047)

60 mm

2-1/2"

56 (2.205)

60 mm

2-1/2"

57.5 (2.264)

70 mm

2-1/2"

61.5 (2.421)

70 mm

63 (2.480)

70 mm

67 (2.638)

70 mm

Specifications may be revised without notice. Torque specs: * 3.9 in-lb (0.44 Nm); ** 5.2 in-lb (0.59 Nm)

D C C

B B A

90° cable clearance

Cables

A = 26 mm (1.024 in) B = 20.75 mm (0.817 in) C = 2.62 mm (0.103 in) D = 31 mm (1.220 in) D = 46 mm (1.811 in)*

Page 34

SLICE MICRO Pin Assignments

DOWN and UP* conne

ctors for SLICE MICRO Base

(looking into the connector)

Mating connector: DTS P/N 80000-04030

Mating connector + backshell: DTS P/N 13000-30170

Pin Function

On (contact closure input to ground)

Start (contact closure input to ground)

Event (contact closure input to ground)

Status output (5 V via 10K with respect to ground)

5, 6

7–15 VDC

7, 8, 12

Ground

USB_PWR

USB_DP

USB_DM

* to PC

Channels 1, 2 and 3 for SLICE MICRO Bridge

(looking into the connector)

Mating connector:

DTS P/N 80000-04019

Mating connector + backshell: DTS P/N 13000-30310

Mating connector + backshell + ID: DTS P/N 13000-30120

Pin Function

1 + Sig 2 - Sig 3 + Ex

4 + ID 5* - Ex 6* - ID 7* Shield

* Pins 5, 6 and 7 are common

1 2

Page 35

SLICE MICRO Mechanical Specifications

Weight

Height

mm (i

nch)

Lid ~9 grams 2 (0.079) IEPE ~28 grams 7 (0.276) Accel ~33 grams 9 (0.354) ARS ~33 grams 9 (0.354) Bridge ~25 grams 7 (0.276) Base ~28 grams 8 (0.314)

Assembly Screw

Length (F

Mounting Screw Length (min)

(BH or SHC)

Total Stack Height

mm (inch)

M3* M4** 6-32***/8-32**

17 (0.67) 16 mm 22 mm 7/8" 24 (0.95) 20 mm 30 mm 1-1/4" 26 (1.02) 25 mm 35 mm 1-1/4" 31 (1.22) 30 mm 35 mm 1-1/2" 33 (1.30) 30 mm 40 mm 1-1/2" 35 (1.38) 35 mm 40 mm 1-5/8" 38 (1.50) 35 mm 45 mm 1-3/4" 40 (1.57) 40 mm 45 mm 1-3/4" 42 (1.65) 40 mm 50 mm 2" 45 (1.77) 45 mm 50 mm 2" 47 (1.85) 45 mm 55 mm 2-1/4" 49 (1.93) 45 mm 55 mm 2-1/4" 52 (2.05) 50 mm 60 mm 2-1/4" 54 (2.13) 50 mm 60 mm 2-1/2" 56 (2.21) 55 mm 70 mm 2-1/2" 59 (2.32) 55 mm 70 mm 2-1/2" 61 (2.40) 60 mm 70 mm 3" 63 (2.48) 60 mm 70 mm 3" 66 (2.60) 65 mm 70 mm 3" 68 (2.68) 65 mm 80 mm 3" 70 (2.76) 70 mm 80 mm 3" 73 (2.87) 70 mm 80 mm 3" 75 (2.95) 75 mm 80 mm 3-1/2” 77 (3.03) 75 mm 90 mm 3-1/2” 80 (3.15) 80 mm 90 mm 3-1/2” 82 (3.23) 80 mm 90 mm 3-1/2” 84 (3.31) 80 mm 90 mm 3-1/2”

Specifications may be revised without notice. Torque specs: * 5.2 in-lb (0.59 Nm); ** 19.8 in-lb (2.24 Nm); *** 9.6 in-lb (1.1 Nm)

Ø4.3 mm (0.169 in) mounting thru holes x2

Accepts 6-32 (loose fit); M4 (free fit); 8-32 (tight fit)

A = 42 mm (1.654 in) B = 34.2 mm (1.346 in) C = 3.9 mm (0.154 in)

A B

Page 36

APPENDIX B – SLICE End-of-Chain Terminal

SLICE End-of-Cha

in Terminal

Function Connections

ON Turns on SLICE

Contact closure = ON to GND (continuous)

If ON signal is removed and the system is not armed, the system will turn off

If ON signal is removed and the system is armed, the system will remain on and collect data (sufficient input power permitting)

V+ Power input +V = input voltage (red)

-V = GND (black)

STS Status output 5 V logic-level output = STS to GND

Conditioned status output; LED direct drive (>

20 mA)

LED is on only when SLICE is collecting data

EVNT Event input Contact closure = EVNT to GND (momentary)

An EVNT signal can initiate data collection (circular buffer mode) or mark an event within the data collection window (recorder mode)

STRT Start record

input

Contact closure = STRT to GND (momentary)

A STRT signal initiates data collection (recorder mode)

Weight: 12 grams (wit

hout cabling) 20-30 AWG terminals. All GND terminations are common. Reverse polarity and overvoltage protection.

26 mm (1.024 in)

20.75 mm (0.817 in)

26 mm (1.024 in)

20.75 mm (0.817 in)

to DN port on SLICE

MICRO or

SLICE

NANO Base

Page 37

SLICE USB Interface (UI)

Correct input power applied

SLICE system is on

SLICE system is recording data

The SLICE USB Interface connects 1 SLICE system to a PC via USB.

* You must pull out on the switch before moving—do not force.

Page 38

SLICE USB Interface (UI)

Function

/ON

/START, CC to ground

/START

+Status out

/EVENT

/EVENT, CC to ground

STATUS

Ground

12.6 VDC out

-Status out

12.6 VDC out

Ground

USB power

USB_DP

USB_DM

15V IN

Ground

(ECG.2B.304.CLL)

This is a standard USB (“B”) interface. A commercial, off-the-shelf USB cable is acceptable.

(panel view)

Function

+Power (15 VDC)

-Power/Ground

3, 4

Ground

1 2 3

6 7 8 9 10

5 6 10

SLICE AUX

(ECG.2B.312.CLL) DB15F (high density)

(panel view) (panel view)

Page 39

SLICE Ethernet Interface (EI)

Input power is over voltage

Correct input power applied

System boot-up

System on

All SLICE systems are recording data

The SLICE Ethernet Interface connects 1 or 2 SLICE systems to a PC via Ethernet.

* You must pull out on the switch before moving—do not force.

Page 40

SLICE Ethernet Interface (EI)

Function

/ON

/START, CC to ground

/START

+Status out

/EVENT

/EVENT, CC to ground

STATUS

Ground

6.5-15 VDC out

-Status out

6.5-15 VDC out

Ground

USB power

USB_DP

USB_DM

15V IN

Ground

(ECG.2B.304.CLL)

This is a standard Ethernet (RJ45) interface. A commercial, off-theshelf patch cable is acceptable.

(panel view)

Function

+Power (9-15 VDC range)

-Power/Ground

3, 4

Ground

1 2 3

6 7 8 9 10

5 6 10

SLICE 1 / SLICE 2 AUX

(ECG.2B.312.CLL) DB15F (high density)

(panel view) (panel view)

Page 41

APPENDIX E

SLICE Grounding Recommendations

Page 42

SLICE Grounding and Shielding Overview

Electromagnetic Interference (EMI), Radio Frequency Interference (RFI) and Electrostatic Discharge (ESD) can seriously degrade the performance of electronic equipment if not addressed. DTS SLICE systems contain protection

EMI/RFI/ESD, h

owever, many dynamic testing environments (pyrotechnics, blast) are particularly noisy and require the utmost attention to grounding and shielding practices. The following recommendations are intended to maximize protection and keep systems functioning properly in

the harshest environments

Ground all DAS equipment, power supplies and sensor mounting fixtures whenever possible. This is an extremely important step toward ensuring the best performance from your SLICE system.

•Always connect a cable from a good Earth ground to the test article, test fixture or

instrumented vehicle. Not only does this help divert potentially disruptive electrical energy, it is also good safety practice. For remote testing applications, a metal ground rod driven 3 ft into the soil can be an effective Earthing device.

•Ground

all SLICE enclosures to the test article o

r v

ehicle

• Install ground cables between all SLICE Stacks and the test article or vehicle.

• Install ground cables between electrically isolated test article/sensor mounting surfaces

and the SLICE Stacks.

Page 43

SLICE Grounding and Shielding Overview

Shield sensor cables

• Use shielded sensor cables. The shield provides a path for EMI/RFI energy to flow to the

DAS ground and enclosure, thus reducing effects on sensor signals.

“

”

•

Connect the sensor cable shield on the DAS side only to the Shield or ground pin on the

SLICE.

• Do not connect the shield at both ends. Connecting the sensor cable shield at both ends

will cause large ground-loop currents that can increase noise or cause damage.

• PC Grounding?

• This is more important than you might think.

• If the Laptop used to communicate with SLICE is powered from a source that has a

significantly different ground potential than the SLICE system, communication with the SLICE can be impaired. In severe cases damage to the laptop or SLICE can occur.

• Either run the la

ptop

on battery power or use a voltmeter to make sure the AC outlet

pp yp

round is not at a significantly different potential than the ground connected to the test

article or vehicle.

• Carefully consider routing and cable design for any high current signals to air bags,

cameras, lights, etc.

•

Route these cables away from sensor wiring

• Cross sensor wiring at 90° angles if the cables must cross.

Page 44

Recommended Grounding Architecture

V ehicle Body or Test Article

Sensor

DAS Mounting Plate

Sensor Cable

Shield NOT

connected

here

Isolated metal

structure such

as a dummy component

SLICE

Stack

Ground Cable

Ground Cable to “Earth”

Earth

Page 45

Cable Installation Recommendations

• Flat braided ground cable has lower impedance than typical round

wires and hence makes a better ground connection.

• Never assume that connections are good until you check them with

an ohmmeter. Should be <1Ω for short runs or <5Ω for long runs.

• Ground cables inside test dummies should be braided type with a 12-

gage equivalent size.

• Ground cables from a test article or vehicle to the SLICE Stack should

be braided strap type with a 15-gage equivalent size.

• The cable from a test article or vehicle to the Earth connection

should be large enough to create an a low impedance connection given the distance between Earth connection and test vehicle. 8 to 12 gage equivalent is common.

gg q

• If braided cable is not available, any ground wire is better than none!

Page 46

Braided Cable

• Alpha wire company makes suitable flat braided ground cable

in 100 ft lengths. Similar cables from other companies are OK.

• Alpha part number: 1230 SV005

”

•

3/16 wide, 15

gage equivalent

• Good for SLICE Stack grounding

• Available from www.Digi-key.com

: part # A1230SV-100-ND

• Alpha part number: 1232 SV005

• 3/8” wide, 12-gage equivalent

• Good for test article grounding

•Available from www.Digi-key.com: part #

1232SV-100-ND

Page 47

APPENDIX F SLICE Bridge Sensor Connections

Page 48

SLICE Bridge – Sensor Interface

Differential Instrumentation Amplifier

Gain 1-128

Multi-function Summing Amp

(Gain 1 or 10)

Excitation Source

• One per channel

•5-volts standard

• 20 mA continuous

• Short circuit safe

•ESD Protected

+ex

+sig

-sig

Sensor

-ex

2.5V

DAC used to null offset. Must zero to <2% A/D f/s.

16-bit

ADC

Basic Analog Features

1) 0-5 volt Input Rage

2) Gains of 1 to 1,280

3) True Bridge Completion

4) 50KHz Bandwidth (max)

5) ESD and RFI Protection

Protection and

Bridge Completion

Excitation

Check Circuit

2-pole 50 KHz

Filter

2-pole 50 KHz

Filter

5-pole

50Hz to 40 KHz

Adjustable

Filter

9-poles of Butterworth filtering

Shunt Check Circuit

Electronic ID

Interface

+ID

Page 49

Standard 4-wire Bridge Connection

−EX

+SIG

−SIG

+ID

Æ Internal to SLICE Bridge

+ex

+sig

-sig

-ex

Sensor

Bridge

Amplifier

Electronic ID

Interface

Excitation

5-volts 20 mA

+EX

−ID

Half-Bridge Switch

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

Sensor Side Å

Shield

2.5V

Page 50

Strain Gage 3-wire Connection

350Ω 0.1%

350Ω Gage

−EX

+ID

Æ Internal to SLICE Bridge

Electronic ID

Interface

Excitation

5-volts 20 mA

+EX

−ID

Half-Bridge Switch

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

Sensor Side Å

+SIG

−SIG

Amplifier

2.5V

Page 51

Strain Gage 2-wire Connection

350Ω Gage

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

−EX

+ID

Æ Internal to SLICE Bridge

Electronic ID

Interface

Excitation

5-volts 20 mA

+EX

−ID

Half-Bridge Switch

Sensor Side Å

+SIG

−SIG

Amplifier

350Ω

0.1%

2.5V

Page 52

Switch Closure

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

−EX

+ID

Æ Internal to SLICE Bridge

Electronic ID

Interface

Excitation

5-volts 20 mA

+EX

−ID

Half-Bridge Switch

Sensor Side Å

+SIG

−SIG

Amplifier

2.5V

Example Sensor Settings

• Half-Bridge Mode

• Proportional to Excitation = No

• Sensitivity = 1.000 mV/EU will scale

data in mV at input. Switch closure as shown gives 833 mV deflection.

Page 53

Signal Generator w/floating output

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

−EX

+ID

Æ Internal to SLICE Bridge

Electronic ID

Interface

Excitation

5-volts 20 mA

+EX

−ID

Half-Bridge Switch

Sensor Side Å

+SIG

−SIG

Amplifier

2.5V

Sig Gen

(floating)

4.0 volts p-p

Notes:

• SLICE input range is 0-5 volts WRT SLICE power ground and –Excitation.

• Both sides of input amplifier must be connected either externally or +Signal via ½ bridge mode.

• Signal generator must float WRT ground or alternate connection method must be used.

• Input range does not quite extend to 0 & 5 volts. Best to use signals under 4.5-volts p-p.

Sample Sensor Settings

• Desired Range = 2000

• Sensitivity = 1.000 mV/EU

• Units = mV

• Sensor Type = Half-Bridge

• Proportional to Excitation = No

• Zero Type = None

• Remove Offset = No

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Signal Generator w/grounded output

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

−EX

+ID

Æ Internal to SLICE Bridge

Electronic ID

Interface

Excitation

5-volts 20 mA

+EX

−ID

Half-Bridge Switch

Sensor Side Å

+SIG

−SIG

Amplifier

2.5V

Sig Gen

(grounded)

4.0 volts p-p

(add 2.5-volts

offset to signal)

Notes:

• SLICE input range is 0-5 volts WRT SLICE power ground and –Excitation.

• Both sides of input amplifier must be connected either externally or +Signal via ½ bridge mode.

• Input range does not quite extend to 0 & 5

volts.

Best to use signals under 4.5-volts p-p.

Sample Sensor Settings

• Desired Range = 2000

• Sensitivity = 1.000 mV/EU

• Units = mV

• Sensor Type = Half-Bridge

• Proportional to Excitation = No

• Zero Type = None

• Remove Offset = No

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Measuring Large Differential Voltages

(5V) +EX

+ SIG

-SIG

Amplifier

10K

Resistor Network

SLICE Bridge

95.3K

Resistance

Approx MAX

External Voltage

Vmax

* Sensitivity

mV/V

49.85

+/-40V

External

Voltage

150K

32.26

+/-60V

49.9K

91.07

+/-20V

* Sensitivity calculation….

(5 + R)

( )

X 1000

(0V) - EX

DTS Range Expander PCB – 1” by 0.2”

+EX

-EX

-SIG

+SIG

+ID

-ID

Shield

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Appendix G: SLICEWare XML File Format

Overview

The .DTS file is an XML based file that contains information about the overall test and the individual channels. Some of the information may be redundant with information stored in the binary channel header.

The attributes and relationships of each XML node are described below.

XML Structure

<Test>

The Test tag is the outer most tag. It contains the following attributes and describes details common to the entire test.

Name

Data Type

Description

String

The name of the test, typically the same as the .DTS file name

Description

String

The description of the test provided by the user

InlineSerializedData

Boolean

Guid

Windows UUID string

A unique identifier assigned to each event

Within the Test node will be a list of modules contained within a <Modules></Modules> tag. A module corresponds to a data acquisition system—for example, an entire Stack. Each module will have its own <Module> tag with the following attributes:

Name

Data

Type

Description

AaFilterRateHz

Integer

The name cut off frequency of the hardware antialias filter used during the test

Number

Integer

A sequential number assigned to each module within the test

SerialNumber

String

The factory assigned serial number of the Base

NumberOfSamples

Integer

The number of samples stored in each channel file. This will be fewer than the number of samples originally requested by the user if the data has been subsampled or if only a portion of the data was downloaded.

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Name

Data

Type

Description

UnsubsampledNumberOfSamples

Integer

The total number of samples collected during data acquisition

PostTriggerSeconds

Double

The number of seconds of recorded data that the user requested after t=0

PreTriggerSeconds

Double

The number of seconds of recorded data that the user requested before t=0

RecordingMode

String

Either the value RecorderMode or CircularBuffer. Other values will be added in the future.

SampleRateHz

Integer

The rate at which sampling occurred during data collection

StartRecordSampleNumber

Integer

The sample number at which the start signal was first detected. The value will always be 0 when RecordingMode=CircularBuffer.

NumberOfChannels

Integer

The number of user configured channels within the module

InlineSerializedData

Boolean

This is a list (possibly 0 length) of trigger sample numbers. In the circular buffer case, there will be one trigger sample number. In recorder mode, the trigger is optional. In the case of multiple event mode, there may be more than one trigger sample number.

The Channels tag contains a list of channel elements. It should have the same number of entries as NumberOfChannels in the Module tag. The type of the child elements will depend on the type of signal conditioning SLICE used.

The AnalogInputChanel tag corresponds to a Bridge SLICE channel. (Note: There is a typo in the tag name and “Chanel” is misspelled. It has been retained for backward compatibility.) Many of the attributes indicate how the channel was configured during the test. The AnalogInputChanel element has the following properties:

Name

Data Type

Description

ChannelType

String

This identifies the representation of the data contained in the .BIN file. Currently this value is always expected to be DTS.Serialization.Test+Module+AnalogInputChannel.

Number

Integer

The channel number within the signal conditioning unit. In a Bridge SLICE, channels are numbered 0–2.

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Name

Data Type

Description

Start

Date

Currently unused

Bridge

String

Either FullBridge or HalfBridge

BridgeResistanceOhms

Integer

The specified bridge resistance used during the shunt check

ChannelDescriptionString

String

The user provided description for the channel

Description

String

The user provided description for the sensor; currently the same as ChannelDescriptionString

DesiredRange

Integer

The user requested full scale

Sensitivity

Double

The sensitivity of the sensor in either mv/V/EU or mv/EU depending on ProportionalToExcitation

SoftwareFilter

String

The requested filtering to apply to this channel. Stored data is unfiltered, and this value must be used to apply proper filtering. Typical values are "1650hz" for CFC1000.

ProportionalToExcitation

Boolean

Indicates if the output of this sensor is proportional to excitation. Used in conjunction with Sensitivity.

IsInverted

Boolean

(Optional) Indicates if the data should be inverted before presenting to the user. If missing, this attribute is considered 'false'.

IsSubsampled

Boolean

(Optional) Indicates if the data stored on disk is at a lower sample rate than the original data collection. If missing, this attribute is considered 'false'.

String

The user provided Engineering Units (EU) (e.g., mm, g, or msec2)

SerialNumber

String

The serial number of the sensor used with this channel

CalSignalEnabled

Boolean

Applies to IEPE SLICE only.

ShuntEnabled

Boolean

For Bridge SLICE only. Indicates if the user requested the channel be shunted during diagnostics.

RemoveOffset

Boolean

Indicates if the user requested hardware offset compensation be used during diagnostics

ZeroMethod

String

Identifies the type of software offset compensation that should be used. If the value is "UsePreCalZero," then the Pre Calibration zero value stored in the channel file should be used. If the value is "AverageOverTime," then an average value computed from the channel data should be used.

ZeroAverageWindowBegin

Double

If ZeroMethod=AverageOverTime, this is the beginning of the window to be used for computing the average

ZeroAverageWindowEnd

Double

If ZeroMethod=AverageOverTime, this is the end of the window to be used for computing the average

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Name

Data Type

Description

InitialEu

Double

A value provided by the user that should be subtracted from all scaled data in addition to the selected ZeroMethod

UnsubsampledSampleRateHz

Integer

The sampling rate used during data collection. Valid only if IsSubsampled=true.

MeasuredShuntDeflectionMv

Double

(Optional) If a shunt test was performed, the actual deflection of the shunt

TargetShuntDeflectionMv

Double

(Optional) If a shunt test was performed, the expected shunt deflection

MeasuredExcitationVoltage

Double

(Optional) The measured excitation voltage, if available. Used by SLICEWare for scaling proportional-toexcitation sensor data if "factory" excitation voltage is not available.

FactoryExcitationVoltage

Double

(Optional) The factory excitation voltage, if available. Used by SLICEWare for scaling proportional-toexcitation sensor data.

TimeOfFirstSample

Double

The time relative to t=0 of the first sample

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Appendix H: SLICEWare Binary File Format

Bin File Header

Offset

# of bytes

Data Type

Description

0 4 UInt32

Magic key to identify file: 0x2C36351F

4 4 UInt32

Version number of this file header (currently 1)

8 8 UInt64

Offset (in bytes) from start of file to where data samples begin

16 8 UInt64

Number of samples in this file

24 4 UInt32

Number of bits per sample

28 4 UInt32

0 = Unsigned samples, 1 = signed samples

32 8 Double

Sample rate

40 2 UInt16

Number of triggers. May be 0.

N = Number of triggers * 8

UInt64

Trigger sample number N + 42

Int32

Pre Test zero level (in counts)

N + 46

Int32

Pre Test Cal level (in counts)

N + 50

Double

Pre test noise as a percent of FS

N + 58

Int32

Post test zero level (in counts)

N + 62

Int32

Post test cal level (in counts)

N + 66

Int32

Data-Zero level (in counts)

N + 70

Double

Scale factor MV (mV/Count)

N + 78

Double

Scale factor EU mV/EU (non-proportional); mV/V/EU (proportional)

N + 86

UInt16

Number of bytes in engineering unit field + 1

N + 88

X = Length of EU field

Array/string

Engineering unit (without NULL termination)

N + X + 88

Char

16 character ISO code

N + X + 104

UInt32

CRC32 for entire file

N + X + 108 64bit (ulong) offset found in 3rd file field

Size of Sample Data

16-, 24-, or 32-bit depending on "Number of bits per sample"

DATA SAMPLES START HERE

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Example File

Shown below is an example view of a .CHN file in HEXADECIMAL notation. The byte numbers are along the left side of the viewer. Boxed in white is first the DATA start offset and it can be seen that starting at the byte specified in this offset is the actual sample data. Note that it is prefaced by trailing "00" from the previous value and from then on, all sample data is consistently non-zero.

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Additional Info

Note that the file is 'little-endian'—that is the values are serialized into the file LSB first. This is not important but should be considered if changes are to be made to the serialization procedure. It must only be consistent between read and write operations. The .NET serialization utilities

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currently used in SLICEWare have defaulted to this because the x86 processor architecture is 'little-endian'.

Take the data offset for example. The 8 bytes read E2 00 00 00 00 00 00 00, but this does not mean the data starts at byte #1.62850163 × 10e19. E2 is the LSB, so the offset is 00 00 00 00 00 00 00 E2, or byte #226d.

Page 64

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SLICE User’s Manual

Revision History

Date

Description

31 July 2017

Added power up procedures. Updated NANO mechanical specs and added common signals for 16-pin Bridge. Removed reference to LABView driver. Updated datasheet with the latest version. Updated overlooked firmware references. (Version 1.0i)

30 Nov 2015

Updated to support Base+. Removed Appendix I (firmware update procedure) and linked to Support site for latest info. Removed battery spec and added NANO IEPE. (Version 1.0h)

30 Oct 2014

Updated Tech Sppt section. Updated SLICE Distributor section, also removing Appendix D. Removed SLICE System Interface and Appendix C. Removed Software sections 5.3 to end. Updated ARS and Accel. Other minor changes. (Version 1.0g)

29 Nov 2012

Added sections 5.2.2.3, 5.2.2.4, 5.2.3, 5.2.4. Updated LED table in Appendix D (SLICE Distributor). Changed Scale factor EU (table) in Appendix J. Removed esensing logo. (Version 1.0f)

25 Aug 2011

Updated sections 2.3, 2.3.1, 2.3.3, 3.1, 3.2, 3.3.2, 3.4, 5.1, 5.2.1 and 5.2.2. Removed section 2.3.4 (Digital SLICE) and any references. Updated options for Accel SLICE (now section 2.3.4, was section 2.3.5). Replaced illustration in Section 4 with one from July 2011 appendix. Removed SLICE Buyer’s Guide (was Appendix A) and any references. Revised Appendix B (now Appendix A). Updated Appendix J (now Appendix I) and broke out “SLICE Base Firmware Update Procedure” into separate appendix. Added new appendix for “SLICE Control Binary File Format.” Updated Appendix I (now Appendix H). Other minor changes were made that were not technically significant. (Version 1.0e)

24 Feb 2011

Modified sections 2.3.11 and 2.3.13. (Version 1.0d)

7 Feb 2011

Added PDF bookmark for CE conformity page. (Version 1.0c)What was the Jan 2011 rev?

6 Dec 2010

Updated Appendix D (SLICE System Interface (SSI). AUX connector pin assignments completely revised (pg 2). Added SLICE mating connector P/N and removed content on right half of page (pg 3). (Version 1.0b)

9 Aug 2010

Added Declaration of CE Conformity. (Version 1.0a)

10 May 2010

Initial release. (Version 1.0)