Instruction Manual

ManualsBrandsADLINK ManualsHardwarePCM-9112+

Appendix for PC/104-

plus

modules

Manual Rev. 1.03: September 19, 2002 Part No: 50-40035-200

1 Introduction

1.1 Introduction of PC/104-plus

PC/104-plus is a special bus architecture designed for embedded systems. A third connector

opposite the PC/104 connectors supports the PCI bus. Basically the electrical specifications of the

PC/104-plus bus are compliant with the PCI signals, except 64-bit extensions, JTAG, PRSNT or

CLKRUN signals. The mechanical specifications are changed to “module stack”; please refer to the

figure shown below. According to the specifications of PC/104-plus, PC/104-plus modules are

installed and configured by switching CLK, IDSEL, INT, REQ and GNT signals through multiplexers

to the appropriate connections.

Figure 1: PC/104-plus module stack

Rotary switch on PCM-9112+ is used for these signals switching, please refer to section 2.4 for

details in this appendix.

1.2 Specifications for PCM-9112+

The specifications of the PCM-9112+ are the same as that of the PCI-9112 except for the Digital

Input and Digital Output functions have been removed from the PCM-9112+. To compensate for

the removal of the DI/DO functions, the AD FIFO has been enlarged to 512 words allowing it to

handle a wider range of applications. Please refer to section 1.3 of the PCI-9112 manual for further

details.

1.3 Supported Software

The supported software is the same as that of the PCI-9112 without the DI/DO functions. Please

refer to section 1.4 of the PCI-9112 manual for further details.

PC/104+ Module Slot 2

PC/104+ Module Slot 1

PC/104+ Host

PC/104+ Module Slot 3

PC/104+ Module Slot 4

Summary of content (10 pages)

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Appendix for PC/104-plus modules Manual Rev. 1.03: September 19, 2002 1 Part No: 50-40035-200 Introduction 1.1 Introduction of PC/104-plus PC/104-plus is a special bus architecture designed for embedded systems. A third connector opposite the PC/104 connectors supports the PCI bus. Basically the electrical specifications of the PC/104-plus bus are compliant with the PCI signals, except 64-bit extensions, JTAG, PRSNT or CLKRUN signals.
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Installation procedures for PC/104-plus DAQ modules: 2.1 what you have In addition to this appendix, the package includes the following items: PCM-9112+ DAQ modules Manual & Software Utility CD-ROM If any of these items is missing or damaged, contact the dealer from whom you purchased the product. Save the shipping materials and carton in case you want to ship or store the product in the future. 2.
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2.4 PC/104-plus configuration A rotary switch on the PCM-9112+ is used for switching the appropriate CLK, IDSEL, INT, REQ and GNT signals from the PCI bus. If the PCM-9112+ card is inserted in a position nearest to the PC/104-plus motherboard, the switch must be set to 0 or 4. For signal stability, the rotary switch should be set to the appropriate position with respect to the module slot. The module stack order was shown in Figure 1.
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2.5.1 Analog input mode configuration The analog input channels on the PCM-9112+ DAQ module can be configured as 16 single-ended or 8 differential inputs. Jumpers JP1 and JP4 control the analog input configuration. The setting of JP1 and JP4 are specified below: Analog Input Setting Single-ended input (Default) Differential input Table 3: Analog input mode configurations 2.5.2 Clock Source Setting The programmable 8254-interval timer is used in the PCM-9112+.
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2.5.3 D/A Reference Voltage External/Internal Setting The D/A converter’s reference voltage source can be supplied either by internal or external sources. For external reference voltage, pin 3 (ExtRef1) and 4 (ExtRef2) of connector CN2 are used. Reference voltage source for D/A of channel 1 and 2 are selected by JP4.
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2.5.4 Internal Reference Voltage Setting The internal reference voltage can be set to either –5V or –10V by JP3. Possible configurations are illustrated in the table below. Note that the internal reference voltage is used only when JP5 is set to internal reference only. If –10V internal reference voltage is selected, the D/A output range is 0V~10V. On the other hand, if the –5V is selected, the D/A output range is 0V~5V.
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2.6 Connector Pin Assignment The PCM-9112+ DAQ module has two 20-pin connectors. CN1 is for analog input and CN2 for analog output, timer/counter’s signals. AI0 AI1 AI2 AI3 AI4 AI5 AI6 AI7 A.GND A.GND 2 4 6 8 10 12 14 16 18 20 1 3 5 7 9 11 13 15 17 19 AI8 AIH0 AI9 AI10 AI11 AI12 AI13 AI14 AI15 A.GND A.GND AIH1 AIH2 AIH3 AIH4 AIH5 AIH6 AIH7 A.GND A.GND Figure 3: CN1 pin assignment for single-ended connection A.GND D.
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2.7 Daughter Boards and Accessories The PCM-9112+ DAQ module has several available accessories allowing for easy signal wiring for measurements and control. Functionality and connections of the available accessories are describe in the in the following sections. 2.7.1 Connect with ACLD-9137 Equipped with a 37-pin D-sub connector, the ACLD-9137 provides a simple way for connection. Intuitively layout and reliable screw clamp terminal allows for easy wiring.
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2.7.3 Connect with ACLD-8125 The ACLD-8125 has a 37-pin D-sub connector, which can connect to the PCM-9112+ through a ACL-10337 and ACL-10137 cable. The most outstanding feature of this daughter board is the CJC (cold junction compensation) circuit. You can directly connect a thermocouple onto the ACLD-8125 board. The CJC is only suitable for high gain analog input mode. Figure 8: Connect with ACLD-8125 2.7.4 Connect with DIN-20P The DIN-20P has a 20-pin ribbon connector with a DIN socket.
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