DTS SLICE MICRO, SLICE NANO User Manual

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© Diversified Technical Systems, Inc. - All Rights Reserved
SLICE User’s Manual
Version 1.0i
July 2017
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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
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
Yes
Bridge SLICE
3 channels of piezo-resistive and voltage sensor inputs.
Yes
Yes
IEPE SLICE
3 channels of piezo-electric sensor inputs
Yes
Yes
Accel SLICE
Bridge SLICE with integrated 3-axis accelerometer
Yes
No
ARS SLICE
Bridge SLICE with integrated 3-axis Angular Rate Sensor
Yes
No
Stack Battery
2-cell LiPo battery connected to bottom of Base+ SLICE
No
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)
3
500,000 samples per second (sps)
6
400,000 sps
9
300,000 sps
12
200,000 sps
15
200,000 sps
18
200,000 sps
21
200,000 sps
24
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
Register) ADC, one per channel, simultaneous sample of all channels.
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
Register) ADC, one per channel, simultaneous sample of all channels.
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.
© Diversified Technical Systems, Inc.
Page 31
SLICE NANO Base Pin Assignments
July 2011 © Diversified Technical Systems, Inc. - All Rights Reserved
DOWN connector**
(looking into the connector)
Mating connector: DTS
P/N 80000-04030
Mating connector + backshell: DTS P/N 13000-30170
Pin Function
1
On (contact closure input to ground)
2
Start (contact closure input to ground)
3
Event (contact closure input to ground)
4
Status output (5 V via 10K with respect to ground)
5, 6
7–15 VDC
7, 8, 12
Ground
9
USB_PWR
10
USB_DP
11
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
1
On (contact closure input to ground)
2
Start (contact closure input to ground)
3
Event (contact closure input to ground)
4
Status output (5 V via 10K with respect to ground)
5, 6
7–15 VDC
7, 8, 12
Ground
9
USB_PWR
10
USB_DP
11
USB_DM
* to PC
1
3
4
7
8
10
12
11
3
1
7
4
10
8
11 12
Page 32
SLICE NANO Bridge Pin Assignments
July 2017 ©Diversified Technical Systems, Inc. - All Rights Reserved
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
Pin
Function
1
+ Sig
2
- Sig
3
+ Ex
4
+ ID
5**
- Ex
6**
- ID
7**
Shield
* Three connectors; cables 6, 10
and 14 cm in length
** Pins 5, 6 and 7 are common
Pin
Function
1
+ Sig (Ch 1)
2
+ ID (Ch 1)
3
- Sig (Ch 2)
4
+ Sig (Ch 2)
5
- Sig (Ch 1)
6
+ Ex (Ch 1)
7
- Ex (Ch 1)
8
+ Ex (Ch 2)
*** One connector; cable 10 cm in length
Pin
Function
9
+ ID (Ch 2)
10
+ Sig (Ch 3)
11
+ Ex (Ch 3)
12
- Ex (Ch 3)
13
- Ex (Ch 2)
14
- Sig (Ch 3)
15
+ ID (Ch 3)
16
- ID (Ch 1, 2, 3)/Shield
-Ex/-ID/Shield are common
1
2
3 5 6
7
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
9
10 13
14 16
Ch 1
Ch 3
Ch 2
Page 33
SLICE NANO Mechanical Specifications
July 2017 ©Diversified Technical Systems, Inc. - All Rights Reserved
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
1"
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
2"
46.5 (1.831)
60 mm
2"
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
3"
63 (2.480)
70 mm
3"
67 (2.638)
70 mm
3"
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
July 2011 © Diversified Technical Systems, Inc. - All Rights Reserved
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
1
On (contact closure input to ground)
2
Start (contact closure input to ground)
3
Event (contact closure input to ground)
4
Status output (5 V via 10K with respect to ground)
5, 6
7–15 VDC
7, 8, 12
Ground
9
USB_PWR
10
USB_DP
11
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
3
4
7
8
10
12
11
1 2
3
5
6
7
Page 35
SLICE MICRO Mechanical Specifications
July 2011 © Diversified Technical Systems, Inc. - All Rights Reserved
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
H)
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)
A
B
C
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)
C
A B
Page 36
APPENDIX B – SLICE End-of-Chain Terminal
© Diversified Technical Systems, Inc. - All Rights Reserved
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 movingdo not force.
support@dtsweb.com 1 March 2010 +1 562 493 0158 ©Diversified Technical Systems, Inc. - All Rights Reserved
Page 38
SLICE USB Interface (UI)
Pin
Function
Pin
Function
1
/ON
1
/START, CC to ground
2
/START
2
+Status out
3
/EVENT
3
/EVENT, CC to ground
4
STATUS
6
Ground
5
12.6 VDC out
7
-Status out
6
12.6 VDC out
8
Ground
7
Ground
8
Ground
9
USB power
10
USB_DP
11
USB_DM
15V IN
12
Ground
(ECG.2B.304.CLL)
This is a standard USB (“B”) inter­face. A commercial, off-the-shelf USB cable is acceptable.
(panel view)
Pin
Function
1
+Power (15 VDC)
2
-Power/Ground
3, 4
Ground
1
2
3
4
1 2 3
11
12
4
5
6 7 8 9 10
1
5 6 10
15
11
SLICE AUX
(ECG.2B.312.CLL) DB15F (high density)
(panel view) (panel view)
support@dtsweb.com 2 March 2010 +1 562 493 0158 ©Diversified Technical Systems, Inc. - All Rights Reserved
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 movingdo not force.
support@dtsweb.com 1 March 2010 +1 562 493 0158 ©Diversified Technical Systems, Inc. - All Rights Reserved
Page 40
SLICE Ethernet Interface (EI)
Pin
Function
Pin
Function
1
/ON
1
/START, CC to ground
2
/START
2
+Status out
3
/EVENT
3
/EVENT, CC to ground
4
STATUS
6
Ground
5
6.5-15 VDC out
7
-Status out
6
6.5-15 VDC out
8
Ground
7
Ground
8
Ground
9
USB power
10
USB_DP
11
USB_DM
15V IN
12
Ground
(ECG.2B.304.CLL)
This is a standard Ethernet (RJ45) interface. A commercial, off-the­shelf patch cable is acceptable.
(panel view)
Pin
Function
1
+Power (9-15 VDC range)
2
-Power/Ground
3, 4
Ground
1
2
3
4
1 2 3
11
12
4
5
6 7 8 9 10
1
5 6 10
15
11
SLICE 1 / SLICE 2 AUX
(ECG.2B.312.CLL) DB15F (high density)
(panel view) (panel view)
support@dtsweb.com 2 March 2010 +1 562 493 0158 ©Diversified Technical Systems, Inc. - All Rights Reserved
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
f
or
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.
© 2009-2010 DTS Principles of Dynamic Data Acquisition
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?
g
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
g
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.
© 2009-2010 DTS Principles of Dynamic Data Acquisition
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”
© 2009-2010 DTS Principles of Dynamic Data Acquisition
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!
© 2009-2010 DTS Principles of Dynamic Data Acquisition
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 #
A
1232SV-100-ND
© 2009-2010 DTS Principles of Dynamic Data Acquisition
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
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Standard 4-wire Bridge Connection
3
1
2
6
7
5
4
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
3K
3K
ID
Half-Bridge Switch
+EX
-EX
-SIG
+SIG
+ID
-ID
Shield
Sensor Side Å
Shield
2.5V
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Strain Gage 3-wire Connection
350Ω 0.1%
350Ω Gage
3
1
2
6
7
5
4
EX
+ID
Æ Internal to SLICE Bridge
Electronic ID
Interface
Excitation
5-volts 20 mA
+EX
3K
3K
ID
Half-Bridge Switch
+EX
-EX
-SIG
+SIG
+ID
-ID
Shield
Sensor Side Å
+SIG
SIG
Amplifier
2.5V
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Strain Gage 2-wire Connection
350Ω Gage
+EX
-EX
-SIG
+SIG
+ID
-ID
Shield
3
1
2
6
7
5
4
EX
+ID
Æ Internal to SLICE Bridge
Electronic ID
Interface
Excitation
5-volts 20 mA
+EX
3K
3K
ID
Half-Bridge Switch
Sensor Side Å
+SIG
SIG
Amplifier
350Ω
0.1%
2.5V
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Switch Closure
+EX
-EX
-SIG
+SIG
+ID
-ID
Shield
3
1
2
6
7
5
4
EX
+ID
Æ Internal to SLICE Bridge
Electronic ID
Interface
Excitation
5-volts 20 mA
+EX
3K
3K
ID
Half-Bridge Switch
Sensor Side Å
+SIG
SIG
Amplifier
1K
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.
1K
1K
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Signal Generator w/floating output
+EX
-EX
-SIG
+SIG
+ID
-ID
Shield
3
1
2
6
7
5
4
EX
+ID
Æ Internal to SLICE Bridge
Electronic ID
Interface
Excitation
5-volts 20 mA
+EX
3K
3K
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
3
1
2
6
7
5
4
EX
+ID
Æ Internal to SLICE Bridge
Electronic ID
Interface
Excitation
5-volts 20 mA
+EX
3K
3K
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
3
1
2
5
-SIG
Amplifier
_
+
10K
10K
10K
10K
R
Resistor Network
SLICE Bridge
95.3K
Resistance
R
Approx MAX
External Voltage
Vmax
* Sensitivity
mV/V
49.85
+/-40V
R
External
Voltage
150K
32.26
+/-60V
49.9K
91.07
+/-20V
* Sensitivity calculation….
5
(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
Id
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
<Modules>
Within the Test node will be a list of modules contained within a <Modules></Modules> tag. A module corresponds to a data acquisition systemfor 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
<TriggerSampleNumbers>
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.
<Channels>
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.
<AnalogInputChanel>
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'.
Eu
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.
42
N = Number of triggers * 8
UInt64
Trigger sample number N + 42
4
Int32
Pre Test zero level (in counts)
N + 46
4
Int32
Pre Test Cal level (in counts)
N + 50
8
Double
Pre test noise as a percent of FS
N + 58
4
Int32
Post test zero level (in counts)
N + 62
4
Int32
Post test cal level (in counts)
N + 66
4
Int32
Data-Zero level (in counts)
N + 70
8
Double
Scale factor MV (mV/Count)
N + 78
8
Double
Scale factor EU mV/EU (non-proportional); mV/V/EU (proportional)
N + 86
2
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
16
Char
16 character ISO code
N + X + 104
4
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.
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SLICE User’s Manual
Revision History
Date
By
Description
31 July 2017
EK
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
EK
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
EK
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
EK
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
EK
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
EK
Modified sections 2.3.11 and 2.3.13. (Version 1.0d)
7 Feb 2011
EK
Added PDF bookmark for CE conformity page. (Version 1.0c)What was the Jan 2011 rev?
6 Dec 2010
EK
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
EK
Added Declaration of CE Conformity. (Version 1.0a)
10 May 2010
EK
Initial release. (Version 1.0)
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