Advantech PCM-3718H Manuale utente
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
1
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
P1
JP1
P2
JP3
J1
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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