B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuel utilisateur

SDAIBB1300 Manual Cover Page

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

4 Channel Input Buffer Board

Model SDAIBB

Document No. SDAIBB1300

This product designed and manufactured in Ottawa, Illinois USA

of domestic and imported parts by

International Headquarters

B&B Electronics Mfg. Co. Inc. USA

707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350

Phone (815) 433-5100 -- General Fax (815) 433-5105

Home Page: www.bb-elec.com

Sales e-mail: sales@bb-elec.com -- Fax (815) 433-5109

Technical Support e-mail: s[email protected]ec.com -- Fax (815) 433-5104

1999 B&B Electronics

August 1999 B&B Electronics RESERVED. No part of this publication may be reproduced or transmitted in

any form or by any means, electronic or mechanical, including photography, recording, or any information

storage and retrieval system without written consent. Information in this manual is subject to change without

notice, and does not represent a commitment on the part of B&B Electronics.

B&B Electronics shall not be liable for incidental or consequential damages resulting from the furnishing,

performance, or use of this manual.

All brand names used in this manual are the registered trademarks of their respective owners. The use of

trademarks or other designations in this publication is for reference purposes only and does not constitute an

endorsement by the trademark holder.

SDAIBB1300 Manual Table of Contents i

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

Table of Contents

CHAPTER 1: GENERAL INFORMATION...........................................1

INTRODUCTION .........................................................................................1

SPECIFICATIONS ........................................................................................1

CHAPTER 2: CONNECTIONS...............................................................3

POWER SUPPLY CONNECTIONS .................................................................3

INPUT VOLTAGE CONNECTIONS ................................................................5

OUTPUT VOLTAGE CONNECTIONS.............................................................6

CHAPTER 3: CONFIGURATION..........................................................9

OUTPUT OFFSET........................................................................................9

GAIN SELECTION.......................................................................................9

Maximum Gain...................................................................................11

Gain Resistor Determination .............................................................12

Maximum and Minimum Common Mode Voltage..............................13

Maximum Differential........................................................................14

Example Board Setup.........................................................................15

APPENDIX A: GLOSSARY.................................................................A-1

APPENDIX B: ERROR BUDGET CALCULATIONS......................B-1

IMPORTANT SPECS @ 25°C: .................................................................B-1

ERROR CONTRIBUTIONS THAT CAN BE REMOVED WITH CALIBRATION.B-1

ERROR CONTRIBUTIONS THAT CANNOT BE REMOVED W/CALIBRATIONB-1

SDAIBB1300 Manual 1

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

Chapter 1: General Information

Introduction

The SDAIBB is a data acquisition module with four input buffers

with selectable gains and selectable output offsets. The gain can be set

from 1 to 1000 with a single resistor change. Gains of 1 and 22.28 are

provided. The output can be offset by the provided 0 V for positive ended

systems, by the provided 2.5 V for plus/minus applications, or by a user

selected amount that is brought in on terminal blocks or solder pads. The

SDAIBB is designed to amplify single ended or differential signals in the

range of –0.15 to +5.0 V into +0.01 to +5.0 V signals that are compatible

with the B&B line of data acquisition products. Sensor and power supply

connections are made through terminal blocks or solder pads. A/D

connections are made through DB25 connectors and are designed to

connect to many of the B&B data acquisition products. All lines on the

DB25 connectors are carried through, allowing boards to be “stacked” for

expanding the number of channels or bringing other lines in or out. Three

SDAIBB boards will fill all 11 channels of the 232SDAxx or 485SDAxx

modules.

Specifications

Number of Channels 4

Gain 1 to 1000

1 and 22.28 provided

Max. Gain Error 0.35%

Max. Gain Drift 25 ppm

Max. Input Offset Voltage 200 µV

Max. Input Offset Voltage Drift 2 µV/°C

Input Impedance 2 GΩ, 2pF

Input Voltage Range

Gain = 1 -0.15 to +5.00 V

Gain > 1 -0.15 to +4.60 V

Output Voltage Range

Gain = 1 0.01 to 5.00 V

Gain > 1 0.01 to 4.95 V

2 SDAIBB1300 Manual

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Power Supply

Input Voltage

Single Module 10 to 30 VDC

Three Modules 12 to 30 VDC

Input Current 8 mA max. per Module

Current Draw From Precision 5 V 0.5 mA per board

Max. Current Throughput 1 A

Connections

Analog Input Terminal Blocks/Solder Pads

Analog Output DB25 Male Connector and

DB25 Female Connector

Power Terminal Blocks/Solder Pads

Pins 2 and 7 of the Male

DB25

Environment

Operating Temperature -40 to +85 °C

Storage Temperature -65 to +125 °C

Size 5.6 x 2.75 in.

14x7cm

SDAIBB1300 Manual 3

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

Chapter 2: Connections

Power Supply Connections

A single SDAIBB board requires 8 mA at 10 to 30 VDC, and can be

brought directly into the board through terminal blocks or solder pads

marked POWER and GND or passed from another board connected to the

male side of the board. See Figure 1 for a system where the power is

brought directly onto the board. When passing power through from

another board, POWER is carried through on pin 2 and GND is carried

through on pin 7. Powers flows in on the male DB25 connector and out on

the female DB25 connector with a 0.5 VDC drop across the board. This

allows multiple boards to be powered with a single power supply by

cascading them. See Table 4 for a list of B&B data acquisition products

that carry power through on pins 2 and 7. Using these devices, you can

power an entire system with a single power supply as shown in Figure 2.

GAIN

JP4

Port Powered

RS-232

MODULE

I/O PORT

O tta w a , Illin o is 6 1 35 0

DATA ACQUISITION

MODEL 232SDA10

JP9

JP10

22.28/

USER

JP3

OUT

OFF

GND

IN+

IN-

OUT.

OFF.

2.5V

POWER

GND

OUT

OFF

GND

IN+

IN-

OUT.

OFF.

2.5V

OUT

OFF

GND

IN+

IN-

22.28/U S E R

GAIN

JP11

OUT.

OFF.

2.5V

JP2

JP6

TB2 TB4

TB5

JP8

OUT

OFF

GND

IN+

IN-

OUT.

OFF.

2.5V

JP5

TB1

TB3

JP7

Power Supply

GAIN

22.28/

USER

GAIN 1

22.28/

USER

JP1

Figure 1: Port Powered SDA and Powered Board

4 SDAIBB1300 Manual

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JP2

Board 2

JP9

JP10

22.28/USER

JP11

GAIN

JP4

JP8

22.28/

USER

OUT.

OFF.

2.5V

TB1

OUT

OFF

GND

IN+

IN-

OUT

OFF

GND

IN+

IN-

GAIN

JP6

TB2

JP5

OUT

OFF

GND

IN+

IN-

OUT.

OFF.

2.5V

OUT.

OFF.

2.5V

TB4

TB5

TB3

JP7

OUT

OFF

GND

IN+

IN-

POWER

GND

OUT.

OFF.

2.5V

JP1

GAIN 1

22.28/

USER

JP3

GAIN

22.28/

USER

JP2

Board 1

JP9

JP10

22.28/USER

JP11

GAIN

JP4

JP8

22.28/

USER

OUT.

OFF.

2.5V

TB1

OUT

OFF

GND

IN+

IN-

OUT

OFF

GND

IN+

IN-

GAIN

JP6

TB2

JP5

OUT

OFF

GND

IN+

IN-

OUT.

OFF.

2.5V

OUT.

OFF.

2.5V

TB4

TB5

TB3

JP7

OUT

OFF

GND

IN+

IN-

POWER

GND

OUT.

OFF.

2.5V

JP1

GAIN 1

22.28/

USER

JP3

GAIN

22.28/

USER

Power

Ottawa,Illinois61350

MODULE

DATAACQUISITION

MODEL 232SDA10

RS-232

I/O PORT

JP2

JP9

JP10

22.28/USER

JP11

GAIN

JP4

JP8

22.28/

USER

OUT.

OFF.

2.5V

TB1

OUT

OFF

GND

IN+

IN-

OUT

OFF

GND

IN+

IN-

GAIN

JP6

TB2

JP5

OUT

OFF

GND

IN+

IN-

OUT.

OFF.

2.5V

OUT.

OFF.

2.5V

TB4

TB5

TB3

JP7

OUT

OFF

GND

IN+

IN-

POWER

GND

OUT.

OFF.

2.5V

JP1

GAIN 1

22.28/

USER

JP3

GAIN

22.28/

USER

Board 3

Figure 2: Single Power Supply System with 11 Channels Supported

SDAIBB1300 Manual 5

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

Input Voltage Connections

The SDAIBB can receive signals in the range of –0.15 to +5 VDC

when set to unity gain, and –0.15 to +3.5 VDC when set to any other gain.

Note: This voltage reading is taken from GND on the SDAIBB to

Input+ and GND to Input- voltages. It is not the differential voltage

from Input- to Input+. Signals are brought into the buffer by terminal

blocks or solder pads. The terminal blocks are labeled Input+, Input-,

GND, and Output Offset. See Figures 3, 4, and 5 for typical input

configurations. The voltage that will be amplified is the reading taken from

Input- to Input+. GND is connected to the ground of the SDAIBB and is

provided for making a common reference for the SDAIBB and the input

device. The Output Offset is an input that shifts the output of the SDAIBB.

This feature is discussed further in Chapter 3, Output Offset.

OUT

OFF

GND

IN+

IN-

Figure 3: Differential Signal with GND

OUT

OFF

GND

IN+

IN-

Signal

GND

Figure 4: Single Ended Signal

6 SDAIBB1300 Manual

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

Output Voltage Connections

The SDAIBB outputs voltages from +0.1 to +5.0 VDC at unity

gain, and +0.1 to +4.95 VDC at any other gain. All lines are carried

straight through on the DB25 connectors, allowing for the addition of extra

channels by connecting on another board.

The SDAIBB output connections are jumper selectable to line up

with the channels of the B&B line of SDAxx data acquisition devices.

When the 4-position shunt is set to JP9, input buffer A is connected to

channel 0 on pin 8, B is connected to channel 1 on pin 9, C is connected to

channel 2 on pin 10, and buffer D is connected to channel 3 on pin 11.

Setting the 4-position shunt to JP10 connects the buffers to channels 4 to 7

(pins 12, 13, 21, and 22 respectively), and setting the shunt to JP11

connects the buffers to channels 8 to 10 (pins 23 to 25). See Table 1 for a

list of the connections when the jumper is on JP9,

Table 2 for when the jumper is on JP10, and Table 3 for when the

jumper is on JP11. Note: When the 4-position jumper is on JP11,

buffer D is not connected to any pins on the DB25 connector.

For a listing of which modules the SDAIBB can connect to and

which channels are compatible on each module, see Table 4.

OUT

OFF

GND

IN+

IN-

Figure 5: Floating Differential Signal

SDAIBB1300 Manual 7

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

Table 1: Connections when the 4-position shunt is on JP9

Pin Connection Pin Connection

1---14---

2 Power 15 ---

3---16---

4---17---

5---18---

6---19---

7GND20 ---

8 A output 21 ---

9 B output 22 ---

10 C output 23 ---

11 D output 24 ---

12 --- 25 ---

13 ---

Table 2: Connections when the 4-position shunt is on JP10

Pin Connection Pin Connection

1 --- 14 ---

2 Power 15 ---

3 --- 16 ---

4 --- 17 ---

5 --- 18 ---

6 --- 19 ---

7GND20 ---

8 --- 21 C output

9 --- 22 D output

10 --- 23 ---

11 --- 24 ---

12 A output 25 ---

13 B output

8 SDAIBB1300 Manual

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

To support all 11 channels on the SDAxx modules connect 3

SDAIBBs to the I/O port of the SDAxx as shown in Figure 2 on page 4 and

set one board to JP9, one to JP10, and the last to JP11. This will provide

11 independent buffered inputs.

Table 3: Connections when the 4-position shunt is on JP11

Pin Connection Pin Connection

1 --- 14 ---

2 Power 15 ---

3 --- 16 ---

4 --- 17 ---

5 --- 18 ---

6 --- 19 ---

7GND20 ---

8 --- 21 ---

9 --- 22 ---

10 --- 23 A output

11 --- 24 B output

12 --- 25 C output

13 ---

Table 4: Models Compatible with SDAIBB

Model Channel Select

Jumper Connections

Supported

Channels

Supported

Power on

pins 2

and 7

2.5V

Output

Offset

Available

485SDA10 JP9

JP10

JP11 0-10 Yes Yes

485SDA12 JP9

JP10

JP11 0-10 Yes Yes

232SDA10 JP9

JP10

JP11 0-10 Yes Yes

232SDA12 JP9

JP10

JP11 0-10 Yes Yes

232SPDA JP9 0-3 Yes Yes

232SPDACL JP9 0-3 Yes Yes

485SPDA JP9 0-3 Yes Yes

485SPDACL JP9 0-3 Yes Yes

232OPSDA * 4 and 5 No No

ADIO12 JP9 4-7 No No

ADIO10 JP9 4-7 No No

Set the jumper for any position and use the solder pads on the DB25

connector to bring out connections for channels 4 and 5. The other

channels already have selectable gains.

Ce manuel convient aux modèles suivants

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