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Installation

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15

2.7 Clock Frequency Settings

The ACL-7120A board offers 3 frequency sources: 10kHz, 100kHz, and 1
MHz. These frequencies can be double, half or quartered by placing a jumper
on position " X2," "X1/2," or "X1/4," of JP1. The default setting is “X1.”

X2
X1

X1/ 2
X1/ 4

JP1

*

* : default setting

Figure 2.5

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Содержание ACL-7120A

Страница 1: ...NuDAQ ACL 7120A Digital I O Timer Counter Card User s Guide...

Страница 2: ......

Страница 3: ...ages arising out of the use or inability to use the product or documentation even if advised of the possibility of such damages This document contains proprietary information protected by copyright Al...

Страница 4: ...86 2 82265877 FAX 886 2 82265717 Address 9F No 166 Jian Yi Road Chungho City Taipei 235 Taiwan Please email or FAX your detailed information for prompt satisfactory and consistent service Detailed Com...

Страница 5: ...ess Setting 11 2 6 Interrupt Settings 13 2 7 Clock Frequency Settings 15 2 8 ACL 7120A Software Library Installation 16 Chapter 3 Signal Connections 17 3 1 Connector Pin Assignment 17 3 2 Timer counte...

Страница 6: ...ation requirements Chapter 1 Introduction Overview of product features applications and specifications Chapter 2 Installation Describes install procedures layout DIP switch settings and jumper setting...

Страница 7: ...igital data to the ACL 7120A when ground isolation is required The ACLD 9185 is a 16 channel relay output board that can be driven by digital outputs from the ACL 7120A Up to four programmable interva...

Страница 8: ...counter One 32 bit timer two 16 bit counter cascaded together with a 4MHz time base One 16 bit counter with 4MHz time base Crystal based frequency source Breadboard area for customized circuits 1 2 Ap...

Страница 9: ...Input loading current Max 0 2 mA at 0 4V Input hysteresis Typical 0 4V Min 0 2V Digital Output Output logic low voltage Sink Max 0 5V at 24mA Output logic high voltage Source Min 2V at 15mA Driving C...

Страница 10: ...nter usage ACL 7120A 3 Counters 0 2 are customizable ACL 7120A 6 Counters 0 2 are customizable Counter 3 is used as the event counting interrupt source or is user defined Counters 4 and 5 are cascaded...

Страница 11: ...dows or LabView please contact an ADLINK dealer for information on the ACLS DLL1 and ACLD LVIEW 1 4 1 ACLS DLL1 The ACLS DLL1 provides simple ACL 07120A board programming under a Windows 9x NT 2000 en...

Страница 12: ......

Страница 13: ...ase address clock sources interrupt IRQ level and IRQ trigger sources are specified below 2 1 What s Included In addition to this User s Manual the package includes the following items ACL 7120A Digit...

Страница 14: ...d handling may cause damage to the module Be sure there is no obvious damage due to shipping and handing by examining the shipping box After opening the card module carton extract the system module an...

Страница 15: ...Installation 9 2 3 ACL 7120A Layout Figure 2 1 7120A Layout SW1 CN1 CN2 CN3 CN4 CN5 JP1 JP2 JP3 Count 0 Count 1...

Страница 16: ...r settings and DIP switches on the card The ACL 7120A is pre configured at the factory and should not need to be changed under normal circumstances A jumper switch is closed or shorted with the plasti...

Страница 17: ...address 0x2A0 is set by the 6 position DIP switch SW1 refer to Figure 2 2 Possible address settings for I O ports are from Hex 200 to Hex 3FE and are listed in Table 2 2 Default Base Address 0x2A0 1...

Страница 18: ...he PC bus address line A8 to A4 A9 is always 1 and A0 A3 are always 0 If you want to change the base address you can only change the values of A8 to A4 the shadowed area of the table below The followi...

Страница 19: ...cer event and external The IRQ level is set by JP2 and is used to define the interrupt IRQ level The default setting is IRQ15 Note Ensure that the chosen IRQ level does not conflict with existing hard...

Страница 20: ...14 Installation JP3 default setting TME IRQ EXT IRQ EVT IRQ TME IRQ Figure 2 4...

Страница 21: ...he ACL 7120A board offers 3 frequency sources 10kHz 100kHz and 1 MHz These frequencies can be double half or quartered by placing a jumper on position X2 X1 2 or X1 4 of JP1 The default setting is X1...

Страница 22: ...mpatible with ACLS DLL1 functions except those without a W prefix in function names To program in a Windows environment please use ACLS DLL1 separate license required To install the DOS library softwa...

Страница 23: ...of these connectors can be connected to flat cables of the same type CN1 and CN3 are used for digital outputs CN2 and CN4 are used for digital inputs and CN5 is used for the timer counter The followin...

Страница 24: ...19 DO 0 DO 2 DO 4 DO 6 DO 8 DO 10 DO 12 DO 14 GND 5V DO 1 DO 3 DO 5 DO 7 DO 9 DO 11 DO 13 DO 15 GND 12V 2 4 6 8 10 12 14 16 18 20 DI 0 DI 2 DI 4 DI 6 DI 8 DI 10 DI 12 DI 14 GND 5V DI 1 DI 3 DI 5 DI 7...

Страница 25: ...DO 26 DO 28 DO 30 GND 5V DO 17 DO 19 DO 21 DO 23 DO 25 DO 27 DO 29 DO 31 GND 12V 1 3 5 7 9 11 13 15 17 19 2 4 6 8 10 12 14 16 18 20 DI 16 DI 18 DI 20 DI 22 DI 24 DI 26 DI 28 DI 30 GND 5V DI 17 DI 19 D...

Страница 26: ...20 Signal Connections CN 5 COUNTER CLK 2 OUT 2 GATE 2 EVENT GATE 3 GATE 4 EXT IRQ GND 5V CLK 1 OUT 1 GATE 1 CLK 0 OUT 0 GATE 0 GND 1 3 5 7 9 11 13 15 17 19 2 4 6 8 10 12 14 16 18 20...

Страница 27: ...er 2 on the ACL 7120A is configured as above figure 3 1 Users can utilize the capabilities of the 8254 through CN5 CN5 also provides additional wiring to fully use the the 8254 Signal solder pads are...

Страница 28: ...source is 4Mhz Note The second internal timer counter 8254 is installed on the ACL 7120A 6 only Without it the functions above will not work Counter 3 Counter 4 Counter 5 CLK3 GATE3 OUT3 CLK4 GATE4 CL...

Страница 29: ...soldering pads The clock source links to the clock input of the 8254 timer counter by soldering a wire between its corresponding pads For example If counter 1 needs a 10kHz clock input simply solder...

Страница 30: ...he input signal and store it in the input buffer If STROBE is continually kept on Low the data on input port is held as the same as the latched data The current input signal will not be available unti...

Страница 31: ...1 DO 8 15 DI 8 15 Base 2 DO 16 23 DI 16 23 Base 3 DO 24 31 DI 24 31 Base 4 LSB OR MSB OF COUNTER 0 Base 5 LSB OR MSB OF COUNTER 1 Base 6 LSB OR MSB OF COUNTER 2 Base 7 CONTROL BYTE CW0 Base 8 LSB OR...

Страница 32: ...I31 DI30 DI29 DI28 DI27 DI26 DI25 DI24 Digital Output Register Format Address BASE 0 BASE 1 BASE 2 BASE 3 Attribute write for digital output Data Format Bit 7 6 5 4 3 2 1 0 Base 0 DO7 DO6 DO5 DO4 DO3...

Страница 33: ...e to the port at address BASE N N 0 1 2 3 Data is written to all 8 bits as a single byte For example In BASIC 05 BASE H2A0 06 VALUE1 H3F 07 VALUE2 HF3 10 OUT BASE 0 VALUE1 the digital outputs DO0 DO7...

Страница 34: ...erent operating modes by appropriately formatted control words The most common uses for the 8254 in microprocessor based systems are Programmable baud rate generator Event counter Binary rate multipli...

Страница 35: ...2 1 1 ILLEGAL RL1 RL0 Select Read Load operation Bit 5 Bit 4 RL1 RL0 OPERATION 0 0 COUNTER LATCH 0 1 READ LOAD LSB 1 0 READ LOAD MSB 1 1 READ LOAD LSB FIRST THEN MSB M2 M1 M0 Select Operating Mode Bit...

Страница 36: ...terminal count If a new count value is loaded while the output is low it will not affect the duration of the one shot pulse until the succeeding trigger The current count can be read at anytime witho...

Страница 37: ...s decrement the count by 2 until time out Then the whole process is repeated In this way if the count is odd the output will be high for N 1 2 counts and low for N 1 2 counts In Modes 2 and 3 if a CLK...

Страница 38: ......

Страница 39: ...y products not manufactured by ADLINK will be covered by the original manufacturers warranty End users requiring maintenance services should contact their local dealers Local warranty conditions will...

Страница 40: ...for shipping costs to transport damaged products to our company or sales office 6 To ensure the speed and quality of product repair please download a RMA application form from our company website www...

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