Advantech PCM-3718H User manual

PCM-3718H/3718HG

PC/104 12-bit DAS Module

with Programmable Gain

User's manual

Contents

CHAPTER 1: General Information........................ 1

1.1 Introduction .......................................................................... 2

1.2 Features................................................................................. 2

1.3 Specifications ......................................................................... 3

1.4 LocatingComponents ............................................................ 5

1.5 Daughterboards ..................................................................... 6

1.6 SoftwareSupport................................................................... 7

1.7 BlockDiagram ....................................................................... 8

CHAPTER 2: Installation ........................................ 9

2.1 InitialInspection ................................................................... 10

2.2 SwitchandJumperSettings .................................................. 10

2.3 ConnectorPinAssignments .................................................. 13

2.4 HardwareInstallation ........................................................... 15

2.5 SoftwareInstallation ............................................................. 16

CHAPTER 3: Signal Connections ........................ 17

3.1 AnalogInputSignalConnections .......................................... 18

3.2 ExpandingAnalogInputs ...................................................... 20

3.3 DigitalSignalConnections .................................................... 20

CHAPTER 4: Register Structure and Format.... 23

4.1 A/DDataRegisters-BASE+0/1.......................................... 25

4.2 SoftwareA/DTrigger-BASE+0 ......................................... 25

4.3 A/DRangeControl-BASE+1............................................. 26

4.4 MUXScan Register -BASE+2 ............................................ 27

4.5 DigitalI/ORegisters-BASE+3/11 ....................................... 28

4.6 A/DstatusRegister-BASE+8.............................................. 29

4.7 ControlRegister-BASE+9 ................................................. 31

4.8 PacerEnableRegister-BASE+10....................................... 32

4.9 ProgrammablePacerRegisters-BASE+12/13/14/15........... 33

CHAPTER 5: A/D Conversion .............................. 35

5.1 A/DDataFormatandStatusRegister................................... 36

5.2 InputRangeSelection........................................................... 37

5.3 MUXSetting ....................................................................... 37

5.4 TriggerMode ....................................................................... 38

5.5 A/DDataTransfer................................................................ 39

5.6 HowtoMake an A/D Conversion........................................ 40

CHAPTER 6: Digital Input/Output.......................41

CHAPTER 7: Programmable Pacer .................... 43

7.1 TheIntel8254 ..................................................................... 44

7.2 CounterRead/writeandControlRegister.............................. 45

7.3 CounterOperatingModes.................................................... 48

7.4 CounterOperations.............................................................. 50

7.5 CounterApplications............................................................ 51

CHAPTER 8: Direct Memory Access Operation 53

8.1 UsingDMATransferwiththePCM-3718H/3718HG........... 54

CHAPTER 9: Calibration...................................... 57

9.1 VRAssignment .................................................................... 58

9.2 A/DCalibration.................................................................... 58

APPENDIX A: Software Driver User Note ......... 61

General Information

CHAPTER

2PCM-3718H/3718HG User's Manual

1.1 Introduction

The PCM-3718H/3718HG is a high performance multifunction data

acquisition module that attaches to the PC/104 connector on your

CPU card or PC/104 module. It offers 12-bit A/D conversion and

digital input/output.

The automatic channel scanning circuitry and the on-board SRAM let

you perform multiple-channel A/D conversion with DMA and

individual channel gains.

The PCM-3718H/3718HG is an advanced new version of our popular

PCL-818 multifunction data acquisition card series. A custom 160-

pinASIC chip integrates the functions of a full-size DAS card. This

chip gives you maximum accuracy and reliability, along with

minimum cost, size and power consumption.

The resulting PC/104 module is fully software compatible with the

PCL-818H/818HG. This puts rich software support and a wide variety

of external signal conditioning boards at your disposal.

The PCM-3718H/3718HG is excellent for data acquisition, process

control, automatic testing and factory automation.

1.2 Features

•16 single-ended or 8 differential analog inputs, jumper selectable

•12-bitA/D converter, up to 100 kHz sampling rate with DMA

transfer

•Software programmable gain value for each analog input channel

•Software selectable input range for each analog input channel

•Two 8-bit digital input/output channels, TTL compatible

•Flexible triggering options: software trigger, programmable pacer

trigger and external pulse trigger

•Data transfer by program control, interrupt handler routine or DMA

•New-technology 160-pin 1.0µm CMOS ASIC chip

Chapter 1 Gerneral Information 3

1.3 Specifications

Analog Input:

•Channels: 16 single-ended or 8 differential, jumper selectable

•Resolution: 12 bits

•Inputrange: (software programmable,VDC)

PCM-3718H

Bipolar: ±10, ±5, ±2.5, ±1.25, ±0.625

Unipolar: 0 ~ 10, 0 ~ 5, 0 ~ 2.5, 0 ~ 1.25

PCM-3718HG

Bipolar: ±10, ±5, ±1, ±0.5, ±0.1, ±0.05, ±0.01, ±0.005

Unipolar: 0 ~ 10, 0 ~ 1, 0 ~ 0.1, 0 ~ 0.01

•Maximumdatathroughput

PCM-3718H: 100 kHz

PCM-3718HG: (variable, depending on PGIA settling time)

Gain Speed

0.5, 1 100 kHz

5,10 35 kHz

50,100 7 kHz

500,1000 770 Hz

•Accuracy: (depending on gain values)

PCM-3718H

Gain Accuracy

0.5,1 0.01% of FSR±1 LSB

2,4 0.02% of FSR±1 LSB

8 0.04% of FSR±1 LSB

PCM-3718HG

Gain Accuracy

0.5,1 0.01% of FSR±1 LSB

5,10 0.02% of FSR±1 LSB

50,100 0.04% of FSR±1 LSB for differential mode

500,1000 0.08% of FSR±1 LSB for differential mode

4PCM-3718H/3718HG User's Manual

•Differential nonlinearity error: ±1 LSB

•Inputimpedance: 1GΩ

•Trigger mode: Software, pacer or external trigger

•External trigger: TTL compatible

Digital Input/ Output:

•Channels:two 8-bit

•Level: TTL compatible

•Inputvoltage:

Logic 0: 0.8 V max.

Logic 1: 2.0 V min.

•Outputvoltage:

Logic 0: 0.33 V max. @ 6 mA (sink)

Logic 1: 3.84 V min. @ 6 mA (source)

Programmable pacer:

•Device: Intel 8254 or equivalent

•Counters: 3 channels, 16-bit.

Counter 1 and Counter 2 are permanently configured as a 32-bit

programmable pacer. Counter 0 is reserved for future development.

•Time base: (for Counter 1’s clock input)

10 MHz or 1 MHz, jumper selectable.

General:

•Power consumption: +5VDC @ 180mA (Typical)

+5VDC @ 400mA (Max.)

•Digital I/O connector: 20-pin post headers for I/O connection.

•Analog input connector: 20-pin post headers for I/O connection.

•Operating temperature: 0 to +60°C (refer to IEC 68-2-1, 2)

•Storage temperature: -20 to +70°C

•Operating humidity: 5 to 95% non-condensing

(refer to IEC 68-2-3)

•MTBF: over 235,346 hrs @ 25°C, ground, fix environment

Chapter 1 Gerneral Information 5

SW1

VR1 VR2 VR3

JP2

JP1

JP3

1.4 Locating Components

Connectors,switchesandVRlocations

Label Function

J1 PC-bus connector

JP1 DMA level (1 or 3) and time base (1MHz or 10MHz)

JP2 Differential or single-ended inputs

JP3 DIO0 or external input

P1 Analog input

P2 Digital input/output connector

SW1 Base address

VR1 A/D full scale

VR2 A/D bipolar offset

VR3 A/D unipolar offset

6PCM-3718H/3718HG User's Manual

1.5 Daughterboards

We offer a wide variety of optional daughterboards to help you get

the most from your PCM-3718H/3718HG. You will need the PCLD-

780/880 Screw-terminal Board or the PCLD-8115 Wiring Terminal

Board to make connections.

PCLD-789D Amplifier/Multiplexer Board

This analog input-signal conditioning board multiplexes 16 differen-

tial inputs to one A/D input channel. A high-grade instrumentation

amplifier provides switch selectable gains of 1, 2, 10, 50, 100, 200,

1000.

PCLD-788 Relay Multiplexer Board

This board multiplexes up to 16 differential inputs to one analog

output channel. It offers isolated break-before-make high voltage

switching and a CJC circuit for thermocouple measurement.

PCLD-786 SSR I/O Module Carrier Board

This board holds eight opto-isolated solid state relay modules and

provides an additional eight outputs to drive external.

PCLD-785B and PCLD-885 Relay Output Boards

These boards let you control relays through the PCM-3718H/3718HG

16-bit digital output channels. The PCLD-785B provides 24 SPDT

relays, while the PCLD-885 provides 16 SPDT power relays.

PCLD-782B Isolated D/I Board

This board provides 24 opto-isolated digital inputs for connecting to

the PCM-3718H/3718HG digital input channels.

PCLD-779 Relay-isolated Multiplexer and Amplifier

Board

This board lets you easily make multi-channel temperature measure-

ments. We designed it for the cost-sensitive customer who requires

precision, low-level signal measurement and isolation for industrial

applications.

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