BIOPAC Systems MP36 Instructions d'installation

01.06.2014

BSL HARDWARE GUIDE

The BSL Hardware Guide describes how to connect and setup various signal electrodes, transducers and other devices

for use with the Biopac Student Lab System using an MP acquisition unit and includes sections that detail different

applications and uses for the Biopac Student Lab PRO System.

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BIOPAC Hardware | MP36/35/45 | Page 1 - 11 Updated: 12.23.2013

MP ACQUISITION UNITS

MP36/35 Four Channel Data Acquisition System

MP45 Two Channel Data Acquisition System

This document covers the following information for the MP36/MP35/MP45 Data Acquisition Systems:

Symbols – page 1

Compliance/Safety – page 1

Input devices/Sensor Connections – pages 1-2

Front and Back Panels – pages 2-4

Specifications – page 5

Pin-Out Diagrams – page 6

BSL System Core Packages – page 7

Lesson Hardware Guide – page 8

BSL Lesson Descriptions – pages 9-11

The MP data acquisition unit is the heart of all Core Packages. The MP Unit has an internal microprocessor to

control data acquisition and communication with the computer. The MP Unit takes incoming signals and converts

them into digital signals that can be processed with the computer. There are analog input channels (four on

MP36/35 units, two on MP45), one of which can be used as a trigger input. The MP Unit must be connected to the

computer and electrodes, transducers, and/or I/O devices must be connected to the MP Unit. Users are suggested

to take a few minutes to become familiar with the MP Unit prior to making any connections.

Symbols — MP36/35 or MP45

Symbol Description Explanation

Type BF Equipment Classification

Attention Consult accompanying documents

On (partial) Turns MP36/35 on assuming AC300A power

adapter is powered by the mains

Off (partial) Turns MP36/35 off if but AC300A power

adapter remains powered by the mains

Direct current Direct current output

USB USB port

COMPLIANCE

Safety

The MP36/35/45 satisfies the Medical Safety Test Standards affiliated with IEC60601-1. The MP36/35/45 is

designated as Class I Type BF medical equipment

EMC

The MP36/35/45 satisfies the Medical Electromagnetic Compatibility (EMC) Test Standards affiliated with

IEC60601-1-2.

Types of Input Devices

There are three types of devices that connect to the MP36/35 and MP45: electrodes, transducers, and I/O devices.

Electrodes are relatively simple instruments that attach to the surface of the skin and pick up electrical

signals in the body.

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BIOPAC Hardware | MP36/35/45 | Page 2 - 11 Updated: 12.23.2013

Transducers, on the other hand, convert a physical signal into a proportional electrical signal.

Input/Output devices (I/O for short) are specialized devices like pushbutton switches and headphones.

Simple Sensor Connectors

Regardless of the type of device connected, every sensor or I/O device connects to the MP36/35 using a “Simple

Sensor” connector. Simple Sensor connectors are designed to plug only one way into the MP unit—no need to

worry about plugging things in upside down or into the wrong socket!

Electrodes, transducers, and the pushbutton switch all connect to the channel input ports on the front

panel of the MP36/35 and MP45.

Headphones and the stimulator connect to the “Analog out” port on the back panel of the MP36/35 and to

the headphone jack on the top of the MP45.

MP36/35 only: A digital device may connect to the “I/O Port” on the back panel

MP36/35 only: A trigger device may be connected to the “Trigger” port on the back panel.

Front Panel

Front Panel, MP36/35

The front panel of the MP36/35 has an electrode check port, four analog input ports, and two status indicators.

Electrode Check

The Electrode Check port is a diagnostic tool used with the BSL PRO

software to determine if the electrodes are properly attached to the subject.

The MP45 does not have an Electrode Check port. Use BIOPAC’s EL-CHECK

standalone electrode impedance checker to measure electrode/skin contact.

MP45 is

CH 1 and CH 2 only.

Input Ports: CH 1, CH 2, CH 3, and CH 4

The 9-pin female analog input ports on the MP acquisition unit are referred

to as Channels. There are four on the front of MP36/35 Units and two on the

MP45. The Biopac Student Lab Lessons software will always check to see that

the proper sensors are connected to the appropriate channel.

Status Indicators

Busy—indicator is activated when the MP36/35 is acquiring data and also during the first few seconds

after the MP36/35 is powered on to indicate that a self-test is in progress. (When the MP36/35 passes the

power-on test, the Busy light will turn off.)

Power—status indicator is illuminated when the MP36/35 is turned on.

Ready—status indicator is illuminated when the MP45 is plugged in and communicating.

HARDWARE GUIDE

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BIOPAC Hardware | MP36/35/45 | Page 3 - 11 Updated: 12.23.2013

Back Panel

Back Panel, MP36/35

The back panel of the MP36/35 has an analog output port, a USB port, an I/O Port, a Trigger Port, a DC input, a

fuse holder, a power switch, and the unit’s serial number.

The back panel of the MP45 has a USB cable and headphone port.

Analog Out Port – Low Voltage Stimulator

There is one 9-pin male “D” analog output port on the back of the MP36/35 that allows signals to be amplified

and sent out to devices such as headphones. On the MP36, Analog Out is built-in low voltage stimulator.

Not available for MP45.

USB Connection

The MP36/35 connects to the computer via a USB Port, located just below the word USB.

Uses a standard USB connector.

Should only be used to connect the MP36/35 to a PC or Macintosh.

The MP45 USB cable is a full-speed USB connector and should only be used to connect the MP45 to a

PC or Mac USB port.

Headphone Output

Accepts a standard (1/4” or 6.3mm) stereo headphone jack; functional for MP36 and MP45 only.

I/O Port (MP36/35 only)

Accepts a DB 25 Female connector.

Input/Output port used to connect digital devices to the MP36/35.

Trigger Input (MP36/35 only)

Accepts a male BNC connector.

Input port used to send trigger signals from another device to the MP36/35.

MP system external trigger inputs are TTL compatible—this means that one needs to send the external

trigger input 0 volts for a TTL low and 5 volts for a TTL high.

The external trigger inputs are equipped with internal pull-up resistors—this means that they

automatically sit at TTL high, if left unattached.

This is a common and helpful implementation, because all one requires to implement an external

trigger is to pull the external trigger input low.

This implementation is typically performed with an external switch placed between the external

trigger input and ground.

When the switch is closed the external trigger input is pulled to TTL low.

When the switch is opened the external trigger input is pulled back (by the internal pull-

up resistor) to TTL high.

HARDWARE GUIDE

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BIOPAC Hardware | MP36/35/45 | Page 4 - 11 Updated: 12.23.2013

To sync several MP systems together, so that one external trigger can start all the MP systems

simultaneously:

1. Connect all the MP systems grounds together.

2. Connect all the MP systems external trigger inputs together.

3. Place a switch between any MP system external trigger input and ground.

When the switch is pressed, all the MP systems that are connected together will be triggered

simultaneously.

DC Input (MP36/35 only)

Use the DC Input to connect a battery, AC/DC converter or other power supply to the MP36/35.

The power supply requirements for the MP36/35 are 12 VDC @ 1 Amp. Only use the AC300A

power adapter with the MP36/35. The AC300A is a 12 VDC @ 1.25 Amp power supply adapter that can

connect to any mains rated as 100-250 VAC @ 50/60Hz, 40VA.

The receptacle is configured to accept a “+” (positive) input in the center of the connector and a “-”

(negative) input on the connector housing.

Fuse Holder (MP36/35 only)

The fuse holder contains a fast-blow fuse that helps protect the MP36/35 from shorts on its power, analog, and

digital I/O lines. The MP36/35 uses a 1.0 amp fast-blow fuse.

To remove the fuse, use a screwdriver to remove the fuse cover located below the word Fuse.

Power Switch (MP36/35 only)

ON position — powers up the MP Unit OFF position — cuts the flow of power

Cleaning Procedures

Before cleaning, be sure to unplug the power supply from the MP36/35 or unplug the MP45 USB cable from the

computer. To clean the MP36/35, use a damp, soft cloth. Abrasive cleaners are not recommended as they might

damage the housing. Do not immerse the MP36/35 or any of its components in water (or any other fluid) or

expose to extreme temperatures as this can damage the unit.

HARDWARE GUIDE

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BIOPAC Hardware | MP36/35/45 | Page 5 - 11 Updated: 12.23.2013

MP36/35/45 Specifications

Analog Inputs Front panel DSUB 9f labeled “CH #”

Number of Channels: Isolated human-safe universal input amplifiers

MP36: 4 Channels MP45: 2 Channels

A/D Sampling Resolution: MP36: 24-bit MP45: 16-bit

Gain Ranges: 5x to 50,000x (13 steps)

Input Voltage Range: Adjustable from ± 200 µV to ± 2 V

MP36 ± 10 V with SS70L

Signal to Noise Ratio MP36: > 89 dB min MP45: > 75 dB min

Input Noise Voltage: 9 nV rms /sqrt (Hz) and 0.1 µV rms noise (0.1 Hz to 35 Hz) - nominal

Input Noise Current: 100 fA rms /sqrt (Hz) and 10 pA p-p noise (0.1 Hz to 10 Hz) - nominal

CMRR: 85 dB minimum

Filters: Programmable analog and digital (IIR) filters;

automatic or user-adjustable

Analog Output

± 1 V output

Headphone jack: 3.5 mm stereo jack connection

Sample Rate: MP36: 100,000 samples/sec each channel

MP45: 48,000 samples/sec each channel

Serial Interface Type: USB

Certification: Complies with IEC60601-1

EMC complies with IEC60601-1-2

CE Marked

Dimensions/Weight: MP36: 7 cm x 29 cm x 25 cm / 1.4 kg

MP45: 3 cm x 18 cm x 10 cm / 0.3 kg

Additional Specs MP36 Only

Analog Output: Back panel DUSB 9m labeled “Analog Out”

Voltage Output: Range -10 V to +10 V Resolution: 16-bits

Pulse Output: Width: variable, 50 µsec – 100 msec

Repetition: variable. 100 µsec – 5 seconds

Pulse Level: Adjustable from -10 V to +10 V

With BSLSTMB Stimulator: 0 – 100 V

Input Triggering Options

External Trigger: Back panel BNC labeled “Trigger”

TTL positive or negative edge

Analog Trigger: Any Input channel (front panel “CH1 – CH4”)

Digital Trigger: Any of the eight input lines (back panel DSUB 25m)

Electrode Check: Impedance Range 0-1 M

(Checks Impedance between Vin+ and GND, Vin- and GND)

(See www.biopac.com for detailed specifications)

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BIOPAC Hardware | MP36/35/45 | Page 6 - 11 Updated: 12.23.2013

MP Unit Pin-outs

Electrode Check — MP36/35 Front

9-PIN FEMALE DSUB

2 Vin+ Electrode connection

3 GND

4 Vin- Electrode connection

MP Input — Front

CH 1, CH 2, CH 3, CH 4

9 PIN FEMALE DSUB

(1 of 4 for MP36/35 or 1 of 2 for MP45)

Pin MP36 and MP35 or MP45

1 Shield drive Shield drive

2 Vin+ Vin+

3 GND GND

4 VinVin

5 Shield drive Shield drive

6 +5 V (100 mA max aggregate) +5 V (50 mA max)

7 ID resistor lead 1; I2C SCLID resistor lead 1 (+5 V)

8 ID resistor lead 2; I2C SDA ID resistor lead 2

9 5 V (100 mA max aggregate) 5 V (50 mA max)

MP Analog Output — MP36/35 Back

9 PIN MALE DSUB

Pin MP36 and MP35

1 Buffered analog or pulse output

A.C. coupled (1,000 uF)

Analog range: +/- 2.048 V

Pulse range: 0 to 2.048 V

2 MP36 Low voltage stimulator

MP35 Pulse or CH data

Buffered, D.C. coupled

Z out = 50 Ω

Range: MP36 -10 V to +10 V

MP35 0 V to +4.096 V

3 GND

4 +5 V (100mA max.)

5 Buffered pulse output

Z out = 1 kΩ

Range: 0 to 5 V

6 +12 V (100 mA max)

7 I2C SCL – Do not connect

8 I2C SDA

9 Monitor – Do not connect

Connector — Back

MP36/35

Pin MP36 or MP35

1 +5 N/C

2 -Data clock

3 Data + RX+

4 GND Ground

5 n/a TX-

6 n/a RX-

7 n/a N/C

8 n/a TX+

MP UNIT PIN OUTS continued

I/O Port — MP36 or MP35 Back

DSUB 25 (male)

Note: BSL v 3.7.0 does not support

Pins 7, 9, 18, 19, 20 and 21.

† Digital Input are 0-5 V with 100 K ohm

pullups to 5 V on board

Pin MP36 or MP35 only

1 Digital Output 1 0-5 V 8 ma 14 Digital Output 5

2 Digital Output 2 0-5 V 8 ma 15 Digital Output 6

3 Digital Output 3 0-5 V 8 ma 16 Digital Output 7

4 Digital Output 4 0-5 V 8 ma 17 Digital Output 8

5 GND Unisolated 18 Analog Input, Right

6 GND Unisolated 1 VRMS, centered at 0 V

7 RS-232-RX 19 Analog Input, Left

8 +5 V Unisolated/fused 1 VRMS, centered at 0 V

9 I2C-SDA 3.3. V 20 RS-232-TX 0-5 V

10 Digital Input 1† 0-5 V 21 I2C-SCL 3.3 V

11 Digital Input 2† 0-5 V 22 Digital Input 5

12 Digital Input 3† 0-5 V 23 Digital Input 6

13 Digital Input 4† 0-5 V 24 Digital Input 7

25 Digital Input 8

HARDWARE GUIDE

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BIOPAC Hardware | MP36/35/45 | Page 7 - 11 Updated: 12.23.2013

NOTE: This “Core Packages” table refers to page numbering from the Biopac Student Lab Catalog. See the

catalog for information contained in any of these page references.

HARDWARE GUIDE

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BIOPAC Hardware | MP36/35/45 | Page 8 - 11 Updated: 12.23.2013

NOTE: This“Lesson Hardware Guide” table refers to page numbering from the Biopac Student Lab Catalog. See

the catalog for information contained in any of these page references.

HARDWARE GUIDE

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BIOPAC Hardware | MP36/35/45 | Page 9 - 11 Updated: 12.23.2013

NOTE: The following three pages of lesson descriptions refer to page numbering from the Biopac Student Lab

Catalog. See the catalog for information contained in any of these page references.

HARDWARE GUIDE

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