Delsys SP-W10 Trigno Wireless Biofeedback System User Guide

July 9, 2024
Delsys

Delsys SP-W10 Trigno Wireless Biofeedback System

Specifications

  • Product Name: Trigno Centro Base Station
  • Model Number: MAN-049-0-1
  • Intended Use: Research purposes only, not for diagnosing or treating diseases Wireless Biofeedback System
  • Temperature Range: 5 to 45 degrees Celsius
  • Battery: Lithium-Polymer
  • Manufacturer: Delsys Inc.

Product Usage Instructions

Getting Started with the Trigno System

Follow the initialization steps for the Centro Base Station as outlined in the user manual on page 23.

PC Software Installation

Install the required software on your PC by following the instructions provided in the manual on page 24.

Configuring Wireless Communication

Set up wireless communication by configuring the settings as described on page 24 of the manual.

Transmission Frequencies

Refer to page 24 for details on transmission frequencies and how to adjust them.

Configuring Sync Triggers on the Centro Base Unit

Learn how to configure sync triggers by following the instructions on page 26 of the manual.

FAQs

  • Q: Can the Trigno Wireless Biofeedback System be used for diagnosing medical conditions?
    • A: No, the device is intended for research purposes only and should not be used for diagnosing or treating diseases.
  • Q: What precautions should be taken when using the Trigno System?
    • A: Avoid using the system on participants with implanted electronic devices, allergies to silver, or in critical care applications. Keep the device dry and handle it with care to prevent damage.

Trigno® Wireless Biofeedback System
Trigno Centro Base Station User’s Guide
MAN-049-0-1
No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written permission of Delsys Inc.

Important Information

Intended Use
The Trigno Wireless Biofeedback System is an instrument consisting of the following key items:
· battery-powered wireless biofeedback sensors · a sensor recharge unit · a base station receiver · a commercial PC with USB communication or similar computing device · software The device enables researchers and clinicians to acquire electromyographic and related signals from participants for academic, clinical, and scientific study, education, fitness and general wellness purposes. Outputs of the system are to be interpreted by qualified individuals educated in the understanding of physiological signals and human movement.
The device is intended for research use only, and not intended for diagnosing, treating, mitigating disease or direct patient therapy.

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Participant Precautions
DO NOT USE on Participants with implanted electronic devices of any kind, including cardiac pace-makers or similar assistive devices, electronic infusion pumps, and implanted stimulators. DO NOT USE on irritated skin or open wounds.
DO NOT USE on Participants with allergies to silver.
DO NOT USE in critical care applications.
Technical Service and Support
For information and assistance please visit our web site at: www.delsys.com Contact us at: E-mail: support@delsys.com Telephone: (508) 545 8200

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Warnings and Precautions
Consult all accompanying documents for precautionary statements and other important information.
Consult accompanying user’s guide for detailed instructions.
Keep the device dry. The ingress of liquids into the device may compromise the safety features of the device.
Handle with care.
Sensitive electronic device. Avoid static discharges. Do not operate or store near strong electrostatic, electromagnetic, magnetic or radioactive fields. Interference from external sources may decrease the signal-tonoise ratio or result in corrupted data.
Connect only to Delsys-approved devices.
Connecting a patient to high-frequency surgical equipment while using Delsys EMG systems may result in burns at the site of the EMG sensor contacts
Immediately discontinue device use if skin irritation or discomfort occurs.

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Immediately discontinue device use if a change in the device’s performance is noted. Contact Delsys technical support for assistance.
Delsys Inc. guarantees the safety, reliability, and performance of the equipment only if assembly, modifications and repairs are carried out by authorized technicians; the electrical installation complies with the appropriate requirements; and the equipment is used in accordance with the instructions for use. Device contains a Lithium-Polymer battery. Do not damage, crush, burn, freeze or otherwise mishandle the device. Recharge only with the approved power supply and recharger.
Report any serious incidents with the device to Delsys at 508 545 8200 or support@delsys.com.
Trigno Systems should be stored and operated between 5 and 45 degrees Celsius due to the presence of an internal Lithium Polymer rechargeable cell. Storing or operating the device, and consequently the cell, outside of this temperature range may compromise the integrity and the safety features of the cell.
Device Information
Complies with Requirements put forth by the Medical Device Regulation EU 2017/745. Class I device, Annex VIII. Type BF device (IEC 60601-1)
Isolated device, (Class II, IEC 60601-1)

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Type BF Equipment.

USA
SN REF

Date of Manufacturing (appears on device)
Manufacturer: Delsys Inc. 23 Strathmore Rd. Natick, MA, 01760, USA
Made in the USA, Country of Origin USA
Serial Number (appears on device) Catalog Number: SP-W10 System Number: DS-T04

Dispose the device according to local rules for electronic waste.

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Authorized Representative: CS Life Sciences europe ltd. The Black Church St. Mary’s Place, Dublin 7 Dublin D07P4AX, Ireland
FCCID: W4P-SP-W10 IC: 8138A-SPW10
This device complies with Part 15 of the FCC Rules and Innovation, Science and Economic Development Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) This device may not cause harmful interference. and (2) this device must accept any interference received, including interference that may cause undesired operation.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil est conforme à des règlements Innovation, Sciences et Développement économique Canada exempts de licence standard RSS (s). Son fonctionnement est soumis aux deux conditions suivantes: (1) Ce dispositif ne doit pas causer d’interférences nuisibles, et (2) cet appareil doit accepter toute interférence reçue, y compris les interférences pouvant entraîner un fonctionnement indésirable.
Cet appareil numériqué de la classe B est conformé à la norme NMB-003 du Canada
This product complies with FCC OET Bulletin 65 radiation exposure limits set forth for an uncontrolled environment.

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To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that required for successful communication.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. There is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna; increase the separation between the equipment and receiver; Connect the equipment into outlet on a separate circuit.

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Pursuant to FCC 15.21 of the FCC rules, changes not expressly approved by Delsys Inc. could void the User’s authority to operate the equipment.
This product complies with FCC & Industry Canada’s RSS-102 radiation exposure limits set forth for an uncontrolled environment.
Ce produit est conforme à la norme FCC et aux limites d’exposition au rayonnement RSS-102 d’Industrie Canada définies pour un environnement non contrôlé.

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Trigno System Overview

® The Trigno Wireless Biofeedback System is a device designed to make EMG
(electromyographic) and biofeedback signal detection reliable and easy. The system transmits signals from Trigno Avanti sensors to the Trigno Centro receiving base station using a time-synchronized wireless protocol that removes data latency across sensors. The core architecture of the Trigno System is designed to support high fidelity EMG signals, along with complementary biofeedback signals such as movement data, force signals, contact pressure events, and timing/synchronization information. The system is capable of integrating with 3rd party instruments through a variety of interfaces including analog signal generation, digital triggering, and software integrations through the Trigno SDK (Software Development Kit) and the Trigno API (Application Program Interface). Refer to the specific system component sensor User Guide for operational details of these system elements.

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Trigno Centro Base Station
The Trigno Centro Base Station is the communicating unit for the Trigno Avanti sensors, capable of securing a continuous synchronized data stream of up to 32 sensors. It can also synchronously digitize up to 6 user-configurable analog signals as well as a microphone input. Four user-configurable digital I/O channels for device synchronization functions and event marking are available. Control of the Centro Base Station is managed by Trigno Discover® software or the user-programmable Trigno® API over a USB port.

Figure 1: front panel (left) and rear panel (right) of the Trigno Centro unit.

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Trigno® Centro Features:
support for 32 Trigno Avanti sensors high speed USB communication with PC medical grade power supply GNSS data timestamp capability dedicated event marking buttons
four configurable trigger channels data start/stop function event marker function +/-5V or +/-3V logic or TTL high impedance input or low impedance output function configurable rising or falling edge detection pushbutton trigger bypass BNC connectors with LED state feedback
six user-configurable analog inputs +/-10V analog signal input range 24-bit analog signal resolution max analog sampling rate of 50 sa/sec 3.5mm condensing mic input

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32-Sensor Capability
The Trigno Centro Base Station supports a wireless communication protocol that can support a maximum of 32 Trigno Avanti sensors while maintaining full time synchronization between them indefinitely. The wireless communication operates in the 2.4GHz band and creates frequency and spatial redundancy across the RF band and across the two antennas at the top the unit.

Pushbutton Event Marking

Two pushbuttons labelled “A” and “B” on the front panel of the Centro unit can be used to create data markers during data streaming.
GNSS Time Stamping

Figure 2: Pushbutton Data Markers.

The Trigno Centro unit has a built-in GNSS receiver

that is configured to record a universal time

reference from the Global Navigation Satellite

System. This provides a mechanism for data from any

system in any location with access to GNSS time

reference to be synchronized with data from the Centro unit. An antenna connector on the back of the unit can be used to connect an external GNSS antenna for improved reception in cases where a lock

Figure 3: External Antenna Port for GNSS Timestamping.

proves difficult. The Trigno Centro unit does not store positional information.

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Trigger Functions

Four BNC connectors on the back

panel of the unit can be configured in

software to act as start triggers or stop

triggers. Signals from other devices can

be used start or stop data streaming

from the sensors. Shunting the BNC or depressing the pushbutton for each BNC will manually trigger the channel.

Figure 4: Configurable BNC trigger channels with pushbutton activators.

Additionally, the channels can be configured as outputs so that other devices can

be started and stopped from the Trigno Centro unit. The trigger channels can be

configured to operate with 3V logic or 5V logic or TTL. Four LEDs on the front panel

indicate the voltage status detected on the BNC: “high” is shown as white and “low”

is shown as blue. Options for a sync output pulse can be configured to drive a

continuous clock pulse train to drive a clock input for other devices. The clock pulse

is synchronized to the wireless sensors data frames and ranges between 500 us to

1 sec and has a settable phase shift. Please see the Trigger Configuration section for

additional details on these features.

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Trigger Signal Feedback
The 4 LEDs on the front panel relay the voltage state on the 4 BNC Trigger channels. A low state (i.e. 0V) is shown as blue and a high state (i.e. 3V or 5V) is shown as white. LEDs that are off indicate that no trigger function has been configured. The purpose of this visual feedback is to give a simple indication of the voltage activity occurring on the trigger channels so that system operators can easily confirm interfacing strategies with other equipment.

Figure 5:Trigger State LEDs.

Analog Signal Inputs
Figure 6: DSUB 15F Analog Signal Connections

The Centro unit can sample analog signals at an aggregate rate of 48,000 samples per second, time synchronized with the wireless sensor data. This data rate can be directed to one channel or split between a maximum of 6. The Centro unit supports 5 input ranges, spanning ±10V to ±0.01V which can be selected to maximize the signal to noise ratio for a given input. The inputs can be configured as differential or single ended signals and are accessed via a ubiquitous DSUB-15 connector. A configurable trigger channel is included on the connector to facilitate multi-signal connections for a wide array of applications.

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Microphone Input
The Centro device is equipped with a 3.5mm jack to accept a condensing microphone input for sampling voice and sound in a time-synchronized way with the wireless sensor data. Operating the microphone input suspends operation of the 6 analog input channels available on the DSUB-15 connector. Microphone data are sampled at 48,000 samples/sec, with 24 bits of resolution.

Figure 7: 3.5 mm condensing microphone i

Power & USB Connection
The Centro unit is supplied with the universal SC-P09 medical grade 12-volt power supply which connects to the device with the 2.1mm barrel jack on the rear panel. In addition to the Centro base station, this power supply is also used for the the Charge-4 and Charge-16 recharge units.

The Centro base station communicates with a

PC over the USB-C connector located on the

rear panel next to the power supply jack.

Figure 8: Power and USB -C jacks.

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Trigno Centro LED States
The Trigno Centro front panel LEDs indicate the device’s operational modes as described below:

MODE: Off Color: Off Pattern: Off

Power is unplugged from the device.

MODE:

Standby Power

Color: White

Pattern: Solid (footer)

Power is connected but

device is dormant.

MODE: Booting Color: White Pattern: Flash (3x/sec)
Flash (1x/sec) Device is initializing on power up.

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MODE: Color: Pattern:

Idle Amber Solid

Device is ready to start data streaming.

MODE: Color: Pattern:

Data Streaming Green Flash (1x/sec)

Data from sensors are streaming to the device.

MODE: Color: Pattern:

Pairing Cyan Solid

Device is actively pairing with a sensor.

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MODE: File Transfer Color: Blue Pattern: Flash (2x/sec) Files are transferring between PC and device over USB.

MODE:

Firmware Update

Color: Magenta

Pattern: Flash (~2x/sec)

Firmware is updating on

sensors or base station.

MODE: Internal Error Color: Red Pattern: Flash (~3x/sec) Device experienced an internal communication error.

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Power Button
Tapping the power button will begin the Centro boot process which takes approximately 34 seconds. Holding the button for 3 seconds or more will power down the device. Holding the button for 12 seconds or more will initiate a forced reset of the device.

Figure 9: Power Button

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Getting Started with the Trigno System

Initializing the Centro Base Station
Trigno Systems are equipped with a universal medical power supply and are provided with country-specific power cables. Connect the Trigno SC-P09 power supply to the circular DC jack located on the back of the Centro Base Station. Energize the power supply by connecting it to a mains outlet or to an isolation transformer. The device will enter standby mode, indicated by white LEDs on the base of the front panel.
Trigno Systems are specifically designed and approved to function only with the Trigno medical power supply provided. Power supply substitutions constitute a violation of the medical safety approvals and will void the warranty.
Computers requiring a connection to mains outlets must do so through use of a medically-certified isolation transformer in order to maintain the IEC60601-1 medical safety ratings of the system.
Connect the USB cable to the to the jack on the back panel of the Centro Base station and to the PC. Initiate the Centro boot process by depressing the power button on the front panel. The device LEDs will blink white during boot up and glow amber once completed. Initiate the Trigno Discover ® software to connect and configure the unit.

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PC Software Installation

Trigno Discover software for Microsoft Windows can be downloaded from the Delsys website (www.delsys.com). Acquiring data with a PC requires the Trigno Centro Base Station or the Trigno Lite USB Adapter to be connected via the USB port. The Trigno System uses a custom RF protocol to guarantee high data bandwidth across a maximum of 32 sensors with no inter-sensor latency. Refer to the software user guide and help information for a detailed explanation of software functions. Data collection and sensor configuration is initiated through the software.
Configuring Wireless Communication
Transmission Frequencies
Wireless communication occurs on varieties of frequencies throughout the acceptable 2.4 GHz spectrum. Four frequency sets are available (“A”, “B”, “C” and “D”) so that accommodations for RF crowding or RF noises can be made in a given environment.
Frequency Set A: creates an allowance from 2416-2451 MHz for standard 802.11 (WiFi) channels 5, 6, & 7
Frequency Set B: creates an allowance from 2421 ­ 2441, 2443-2483 MHz for standard 802.11(WiFi) channels 5, 9,10,11, 12, 13, & 14.
Frequency Set C: creates an allowance from 2400-2446 MHz for standard 802.11 (WiFi) channels 1,2,3,4,& 5.

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Frequency Set D: creates an allowance from 2409-2461 MHz for standard 802.11 (WiFi) channels 3,4, 5, 6, 7, & 8.
Changing the communication frequency of the system requires all sensors to be repaired to the base station for proper operation.

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Configuring Sync Triggers on the Centro Base Unit
Trigger Inputs An input trigger signal from a 3rd party device can be connected to any one of the BNC connectors on the rear panel of the Trigno Centro unit. Using the Trigno Discover Software, the selected BNC connector can be configured to support 3.3V logic or 5.0V logic and once armed can configured to act on a rising edge or a falling edge.
BNCs are galvanically connected to the chasis of the operating PC. To maintain full electrical isolation and compliance to IEC60601-1 medical safety standards, the PC operating the Trigno Centro unit and the 3rd party device connected to the BNC trigger must be fully isolated from mains power by an IEC60601-1 approved isolated power source.
Start Trigger Input
A BNC configured as a start signal input will commence data acquisition and storage at the instance the signal edge is detected. Only one BNC can be configured as a start input at any time.

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Rising Edge

Falling Edge

Trigger Input

Trigger Input

Trigno Data Samples

Trigno Data Samples

t=0s

t=0s

Figure 10: Start Trigger Input data sample timing for rising or falling signal edges.

Stop Trigger Input
A BNC configured as a stop signal input will immediately stop data acquisition at the instance the signal edge is detected. Only one BNC can be configured as a stop input at any time.

Rising Edge
Trigger Input

Falling Edge
Trigger Input

Data

Data

t=end

t=end

Figure 11: Stop Trigger Input data sample timing for rising or falling signal edges.

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Single Input Start/Stop Trigger
A single BNC can be configured as a combined start and stop trigger input. In this configuration the first pulse received initiates data collection and a second received pulse stops data collection. As with other trigger configurations options for voltage levels and edge definition of rising or falling apply. Once a trigger BNC input is configured in this way no other input BNCs can be configured.

Positive Logic
Input Signal

Negative Logic
Input Signal

Trigno Data Samples

Trigno Data Samples

start

stop

Figure 12: Single input start/stop trigger.

start

stop

Windowed Trigger A BNC can be configured to control data acquisition from a windowed signal, with the leading edge starting data acquisition and the trailing edge stopping acquisition. The window width of the signal determines the duration of the data collection. As with other trigger options, 3.3V/5.0V voltage levels and positive/negative configurations are available. Once a windowed trigger input is defined, no other trigger pathways can be configured as inputs.

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Positive Logic
Windowed In/Out Signal

Negative Logic
Windowed In/Out Signal

Data Samples

Data Samples

t=0s t=end

t=0s t=end

Figure 13: Windowed Trigger Input defining data acquisition duration by window width.

Trigger Input Manual Override For any Trigger BNC configured as an input, a signal can be generated manually by pushing the tactile button switch associated with the corresponding BNC on the back panel. Depressing the button generates a rising edge signal and releasing the button generates a falling edge signal. This can be easily used to test trigger input configurations and manually trigger the system as an alternative to an electrical signal pulse.

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Trigger Outputs An output trigger signal for 3rd party devices can be connected to any one of the BNC connectors on the rear panel of the Trigno Centro unit. Using the Trigno Discover Software, the selected BNC connector can be configured to support 3.3V logic or 5.0V logic and once armed can be configured to generate a rising edge or a falling edge signal at the moment of data acquisition start or data acquisition stop.
BNCs are galvanically connected to the chasis of the operating PC. To maintain full electrical isolation and compliance to IEC60601-1 medical safety standards, the PC operating the Trigno Centro unit and the 3rd party device connected to the BNC trigger must be fully isolated from mains power by an IEC60601-1 approved isolated power source.
Start Trigger Output
A BNC configured as a start signal output will generate a signal edge at the moment the first data sample is captured. Only one BNC can be configured as a start output at any time.

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Rising Edge

Falling Edge

Trigger Output

Trigger Output

Trigno Data Samples

Trigno Data Samples

t=0s

t=0s

Figure 14: Start Trigger output signal timing for rising or falling signal edges.

Stop Trigger Output
A BNC configured as a stop signal output will generate a signal edge at the same time the last data sample is acquired. Only one BNC can be configured as a stop output at any time.

Rising Edge
Trigger Output

Falling Edge
Trigger Output

Data

Data

t=end

t=end

Figure 15: Stop Trigger output signal timing for rising or falling signal edges.

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Event Marking Inputs

The Trigno Centro unit offers data marking options to indicate moments of interest during data collections. Users can manually mark data using the “A” marker channel or the “B” marker channel by manually pushing the corresponding buttons on the front panel of the Centro device. The moments in time will be correspondingly marked as user-defined events of interest in the recorded data sets. Separately, BNC connectors on the rear panel of the Centro device can be configured as inputs to mark time events from 3rdparty devices. As with Triggers signals, these inputs can be configured for 3.3V or 5.0V logic. Bosth rising and falling edges will be marked in the data. No more than 2 BNC inputs can be configured as event markers at any given time.

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Configuring Analog Inputs on the Centro Base Unit
The Trigno Centro unit supports up to 6 analog inputs which are sampled in synchrony with Trigno Sensor data. The aggregate analog input sampling rate is 48,000 samples/sec with a max resolution depth of 24 bits. The aggregate data rate is divided amongst the configured channels according to the table below:

Configured Channel

Sampling Rate per channel

1

48,000 sa/sec

1,2

24,000 sa/sec

1,2,3,4

12,000 sa/sec

1,2,3,4,5,6

6,000 sa/sec

Table 1: Sampling rates as a function of number of input channels enabled.

The analog input connector is galvanically connected to the chasis of the operating PC. To maintain full electrical isolation and compliance to IEC60601-1 medical safety standards, the PC operating the Trigno Centro unit and the 3rd party device connected to the anlaog input connector must be fully isolated from mains power and comply with IEC60601-1 requirements.

The voltage input range of each channel can be tuned to maximize bit resolution and SNR based on the expected signal amplitude range.

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Performance between differential input and single-ended input is

demarcated.

Single Ended Connection

Input Range

Noise Floor (Vrms(r.t.i.))

Resolution (r.t.i.)

± 10 V

657 uV

1.42 e-6

± 5 V

318 uV

1.42 e-6

± 1 V

7.4 uV

1.22e-7

± 0.1 V

0.12 uV

1.22e-7

± 0.01 V

0.017 uV

2.77e-9

Differential Connection

Input Range

Noise Floor (Vrms(r.t.i.))

Resolution (r.t.i.)

± 10 V

657 uV

1.42 e-6

± 5 V

318 uV

1.42 e-6

± 1 V

7.4 uV

1.22e-7

± 0.1 V

0.12 uV

1.22e-7

± 0.01 V

0.017 uV

2.77e-9

Table 2: Scaling options for multiplying (1-75) or dividing (1-27) the native 13.5ms

data synchronization period of the system.

Differential and Single Ended Analog Input Configurations
Native access to each signal input is for a differential configuration. Shielding is recommended for each differential pair connected to the

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input. Shielding should be connected to the ground pin of the analog input connector. Single ended signals can be easily connected by using the positive (non-inverting) input of each channel and connecting the negative (inverting) pin of the connector to ground.

Differential Setup

Single Ended Setup

Pin CH+ CH- Pin

Pin CH+ CH- Pin

5 +IN1 -IN1 10

5 +IN1 GND 10

15 +IN2 -IN2 14

15 +IN2 GND 14

7 +IN3 -IN3 2

7 +IN3 GND 2

1 +IN4 -IN4 6

1 +IN4 GND 6

9 +IN5 -IN5 4

9 +IN5 GND 4

8 +IN6 -IN6 3

8 +IN6 GND 3

GND 13

GND 13

Table 3: Differential analog input connections (left side); Single ended analog input

connections (right side).

Differential Connections

Single-Ended Connections

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-+

-+

CH5

CH3

+-

-+

+-

CH1

CH6

CH4

CH5

CH3

CH1

CH6

CH4

-+ +

CH2 CH2
Figure 16: Connecting the Analog Inputs in a differential configuration (left) and single ended configuration (right).
Analog Input Connector Trigger For increased accessibility a trigger signal connection is available on the DSUB-15 connector supporting the analog input signals. Configuration of the trigger channel matches configuration options of the BNC trigger channels.

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Maintenance and Care

Trigno Centro Base Station
While the Base Station enclosure is made of durable polycarbonate plastic, the following points should be kept in mind during its use and handling.
· The device and its accessories should be visually inspected before every use to ensure that no mechanical deterioration has occurred.
· The Centro Base Station can be easily cleaned with isopropyl alcohol swabs if necessary. Do not expose the base station to any liquid; It is not a sealed device.
· The units should not be dropped or subjected to excessive forces of impact or acceleration.
The Centro Base Station is not water-resistant. Under no circumstances should this unit be exposed to water or any other type of liquid. Only power the Centro Base Station with the supplied Trigno System power supply. Using an unapproved power supply may dammage the system and may negate the saftey features of the system.

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Appendix

Mains Isolation
The Trigno Base Station is provided with a medical grade isolated power supply that is compliant with the IEC60601 series of harmonized standards for Medical Devices. However, full compliance with IEC60601-1 Basic Safety for Medical Devices mandates the PC operating the software to be isolated as well. This stems from the basic requirement to have all participants and operators electrically isolated from equipment.
Delsys does not supply isolation transformers for Personal Computers and their peripherals.
Delsys recommends model IS1000HG manufactured by Tripp Lite (www.tripplite.com) for this task. This device is a medical grade isolation transformer capable of delivering up to 1000 W. A smaller similar version for 500W is also available (IS500HG). Similar products compliant with IEC60601-1 are acceptable.

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References

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