Omega OME-A822PG User manual

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User’s Guide

OME-A822PG

ISA-Bus

Multi-Functional Board

Hardware Manual

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WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

OME-A-822PGH/PGL

Enhanced Multi-Function Card

Hardware Manual

OME-A-822PGL/PGH Hardware Manual ---- 1

Tables of Contents

1. Introduction_________________________________________________________ 4

1.1 General Description __________________________________________________ 4

1.2 Features _____________________________________________________________ 4

1.3 Specifications _________________________________________________________ 5

1.3.1 Power Consumption : ________________________________________________________ 5

1.3.2 Analog Inputs ______________________________________________________________ 5

1.3.3 A/D Converter _____________________________________________________________ 5

1.3.4 DA Converter ______________________________________________________________ 6

1.3.5 Digital I/O_________________________________________________________________ 6

1.3.6 Interrupt Channel ___________________________________________________________ 6

1.3.7 Programmable Timer/Counter _________________________________________________ 7

1.3.8 Direct Memory Access Channel (DMA) _________________________________________ 7

1.4 Applications __________________________________________________________ 8

1.5 Product Check List ____________________________________________________ 8

2. Hardware Configuration ______________________________________________ 9

2.1 Board Layout_________________________________________________________ 9

2.2 I/O Base Address Setting ______________________________________________ 10

2.3 Jumper Settings______________________________________________________ 11

2.3.1 JP1 : D/A Internal Reference Voltage Selection___________________________________ 11

2.3.2 JP2 : D/A Int/Ext Ref Voltage Selection ________________________________________ 12

2.3.3 JP3 : Single-ended/Differential Selection________________________________________ 12

2.3.4 JP4 : A/D Trigger Source Selection ____________________________________________ 13

2.3.5 JP5 : Interrupt Level Selection ________________________________________________ 13

2.3.6 JP6 : User Timer/Counter Clock Input Selection __________________________________ 14

2.3.7 JP7 : DMA DACK Selection, JP8 : DMA DRQ Selection _____________________ 15

2.4 I/O Register Address__________________________________________________ 16

2.4.1 8254 Counter _____________________________________________________________ 17

2.4.2 A/D Input Buffer Register ___________________________________________________ 17

2.4.3 D/A Output Latch Register___________________________________________________ 18

2.4.4 D/I Input Buffer Register ____________________________________________________ 19

2.4.5 Clear Interrupt Request______________________________________________________ 19

2.4.6 A/D Gain Control Register ___________________________________________________ 20

2.4.7 A/D Multiplex Control Register _______________________________________________ 21

2.4.8 A/D Mode Control Register __________________________________________________ 22

OME-A-822PGL/PGH Hardware Manual ---- 2

2.4.9 A/D Software Trigger Control Register _________________________________________ 23

2.4.10 D/O Output Latch Register __________________________________________________ 24

2.5 Digital I/O __________________________________________________________ 25

2.6 8254 Timer/Counter __________________________________________________ 26

2.7 A/D Conversion ______________________________________________________ 27

2.7.1 A/D conversion flow________________________________________________________ 28

2.7.2 A/D Conversion Trigger Modes _______________________________________________ 29

2.7.3 A/D Transfer Modes________________________________________________________ 29

2.7.4 Using software trigger and polling transfer ______________________________________ 30

2.8 D/A Conversion ______________________________________________________ 31

2.9 Analog Input Signal Connection _________________________________________ 32

2.10 Using OME-DB-8225 CJC Output ______________________________________ 36

3. Connector _________________________________________________________ 37

3.1 CN1/CN2/CN3 Pin Assignment _________________________________________ 37

3.2 Daughter Board________________________________________________________ 40

3.2.1 OME-DB-8225 ____________________________________________________________ 40

3.2.2 OME-DB-37 ______________________________________________________________ 40

3.2.3 OME-DB-16P_____________________________________________________________ 40

3.2.4 OME-DB-16R_____________________________________________________________ 40

4. Calibration___________________________________________________________ 41

4.1 Description of Variable Resistors ________________________________________ 41

4.2 D/A Calibration______________________________________________________ 42

4.3 A/D Calibration______________________________________________________ 43

5. Diagnostic Utility____________________________________________________ 44

5.1 Introduction_________________________________________________________ 44

5.2 Running The Diagnostic Utility _________________________________________ 46

5.2.1 Setup ____________________________________________________________________ 47

5.2.2 CALIBRATION ___________________________________________________________ 49

5.2.3 FUNCTION TEST _________________________________________________________ 50

5.2.4 SPECIAL TEST ___________________________________________________________ 58

5.2.5 Help ____________________________________________________________________ 59

OME-A-822PGL/PGH Hardware Manual ---- 3

1. Introduction

1.1 General Description

The OME-A-822PGL/PGH is a high performance, multifunction analog, digital I/O

board for PC AT compatible computers. The OME-A-822PGL provides low gain (0.5,1, 2, 4,

8). The OME-A-822PGH provides high gain (0.5,1,5,10,50,100,500,1000). The

OME-A-822PGL/PGH contains a 12-bit ADC with up to 16 single-ended or 8 differential

analog inputs. The maximum sample rate of the A/D converter is 100Ksample/sec. There are

two 12-bit DACs with voltage output, 16 channels of TTL-compatible digital input, 16

channels of TTL-compatible digital output and one 16-bit counter/timer channel for timing

input and output.

The following A/D performance bench marks were achieved on a 33MHz 486

computer:

z Polling mode : about 100Ksample/sec (with single-task OS)

z Interrupt mode : about 60Ksample/sec (with single-task OS)

z DMA mode : about 100Ksample/sec (with single-task OS)

1.2 Features

z The maximum sample rate of the A/D converter is 100 K samples/sec

z Software selectable input ranges

z PC AT compatible ISA bus

z A/D trigger mode : software trigger , pacer trigger, external trigger

z 16 single-ended or 8 differential analog input signals

z Programmable high gain : 0.5,1,5,10,50,100,500,1000 (OME-A-822PGH)

z Programmable low gain : 0.5,1,2,4,8 (OME-A-822PGL)

z 2 channel 12-bit D/A voltage output

z 16 digital input /16 digital output (TTL compatible)

z Interrupt handling

z Bipolar/Unipolar operation

z 1 channel general purpose programmable 16 bit timer/counter

OME-A-822PGL/PGH Hardware Manual ---- 4

1.3 Specifications

1.3.1 Power Consumption :

z +5V @960 mA maximum, OME-A-822PGL/PGH

z Operating temperature : -20°C to 60°C

1.3.2 Analog Inputs

z Channels : 16 single-ended or 8 differential

z Input range : (software programmable)

OME-A-822PGL:bipolar : ±10V,±5V, ±2.5V, ±1.25V, ±0.0625V

unipolar : 0 to 10V, 0 to 5V, 0 to 0.2.5V, 0 to 1.25.V

OME-A-822PGH:bipolar : ±10,±5V,±1V, ±0.5V, ±0.1V, ±0.05V, ±0.01V, ± 0.005V

unipolar : 0 to 10V, 0 to 1V, 0 to 0.1V, 0 to 0.01V

z Input current : 250 nA max (125 nA typical ) at 25 deg. C

z On chip sample and hold

z Over voltage : continuous single channel to

70Vp-p

z Input impedance : 10 Ω // 6pF

Caution: refer to

Sec. 2.9 first

10

1.3.3 A/D Converter

z Type : successive approximation , Burr Brown ADS 774 or SIPEX-SP774B

( equivalent)

z Conversion time : 8 microsec.

z Accuracy : +/- 1 bit

z Resolution : 12 bits

OME-A-822PGL/PGH Hardware Manual ---- 5

1.3.4 DA Converter

z Channels : 2 independent

z type : 12 bit multiplying , Analog device AD-7541

z Linearity : +/- 1/2 bit

z Output range : 0 to 5V or 0 to 10V jumper selected , may be used with other

AC or DC reference input. Maximum output limit +/- 10V

z Output drive : +/- 5mA

z settling time : 0.6 microseconds to 0.01% for full scale step

1.3.5 Digital I/O

z Output port : 16 bits, TTL compatible

Output Low: VOL=05.Vmax @IOL = 8 mA max

Output High: VOH = 2.7Vmin @IOH = -400µA max

z Input port : 16 bits, TTL compatible

Input Low: VIL=0.8V max; IIL = -0.4mA max

Input High: VIH=2.0V min; IIL = 20µA max

1.3.6 Interrupt Channel

z Level : 3,4,5,6,7,10,11,12,14,15, jumper selectable

z Enable : Via control register

OME-A-822PGL/PGH Hardware Manual ---- 6

1.3.7 Programmable Timer/Counter

z Type : 82C54 -8 programmable timer/counter

z Counters : Counter1 and counter2 are cascaded as a 32 bit pacer timer.

Counter0 is a user available timer/counter. The software driver also uses

counter0 to implement a machine independent timer.

z Clock input frequency : DC to 10 MHz

z Pacer output : 0.00047Hz to 0.5MHz

z Input ,gate : TTL compatible

z Internal Clock : 2 MHz

1.3.8 Direct Memory Access Channel (DMA)

z Level : CH1 or CH3, jumper selectable

z Enable : via DMA bit of control register

z Termination : by interrupt on T/C

z Transfer rate : 100K conversions/sec.

OME-A-822PGL/PGH Hardware Manual ---- 7

1.4 Applications

z Signal analysis

z FFT & frequency analysis

z Transient analysis

z Production testing

z Process control

z Vibration analysis

z Energy management

z Industrial and laboratory. measurement and control

1.5 Product Check List

The OME-A-8322PGL/PGH includes the following items:

z OME-A-822PGL/PGH multifunction card

z OME-A-822PGL/PGH CD ROM

Attention !

If any of these items are missing or damaged, please contact our

customer service department. Save the shipping materials and carton

in case you want to ship or store the product in the future.

OME-A-822PGL/PGH Hardware Manual ---- 8

2. Hardware Configuration

2.1 Board Layout

OME-A-822PGL/PGH

VR1/2/3/4/5/6/7

ISA BUS ISA BUS

CN2

CN1

JP5

SW1

CN3

JP3

JP6

JP8 JP7

JP4

JP1

JP2

OME-A-822PGL/PGH Hardware Manual ---- 9

2.2 I/O Base Address Setting

The OME-A-822PGL/PGH occupies 16 consecutive locations in I/O address

space. The base address is set by DIP switch SW1. The default address is

0x220.

A9 A8 A7 A6 A5 A4

6 5 4 3 2 1

ON

SW1 : BASE ADDRESS

BASE

ADDR

A9 A8 A7 A6 A5 A4

200-20F OFF ON ON ON ON ON

210-21F OFF ON ON ON ON OFF

220-22F(;) OFF ON ON ON OFF ON

230-23F OFF ON ON ON OFF OFF

: : : : : : :

300-30F OFF OFF ON ON ON ON

: : : : : : :

3F0-3FF OFF OFF OFF OFF OFF

(;) : default base address is 0x220

OME-A-822PGL/PGH Hardware Manual ---- 10

The PC I/O port map is given below.

ADDRESS Device ADDRESS DEVICE

000-1FF PC reserved 320-32F XT Hard Disk

200-20F Game/control 378-37F Parallel Printer

210-21F XT Expansion Unit 380-38F SDLC

238-23F Bus Mouse/Alt. Bus Mouse 3A0-3AF SDLC

278-27F Parallel Printer 3B0-3BF MDA/Parallel Printer

2B0-2DF EGA 3C0-3CF EGA

2E0-2E7 AT GPIB 3D0-3DF CGA

2E8-2EF Serial Port 3E8-3EF Serial Port

2F8-2FF Serial Port 3F0-3F7 Floppy Disk

300-31F Prototype Card 3F8-3FF Serial Port

2.3 Jumper Settings

2.3.1 JP1 : D/A Internal Reference Voltage

Selection

Reference

Voltage

-5V

(default)

1

2

3

(

-10V

)

(-5V)

Reference

Voltage

-10V

1

2

3

(

-10V

)

(-5V)

Select (-5V) : D/A voltage output = 0 to 5V (both channel)

Select (-10V) : D/A voltage output = 0 to 10V (both channel)

JP1 is valid only if JP2 is set to D/A internal reference voltage

OME-A-822PGL/PGH Hardware Manual ---- 11

2.3.2 JP2 : D/A Int/Ext Ref Voltage Selection

If JP2 is set to internal reference, then JP1 should be set to -5V or -10V internal reference

voltage.

If JP2 is set to external reference, then ExtRef1, CN3 pin 31, is the external reference

voltage for D/A channel 1. and ExtRef2, CN3 pin 12, is the external reference voltage for

D/A Channel 2.

2.3.3 JP3 : Single-ended/Differential Selection

Ch 1 = INT

Ch 2 = INT

(default)

JP2

(

vref

)

Ch 1 =EXT

(ExtRef1)

Ch 2 =EXT

(ExtRef2)

JP2

(

vref

)

Ch 1 = INT

Ch 2 =EXT

(ExtRef2)

JP2

(

vref

)

Ch 1 =EXT

(ExtRef1)

Ch 2 = INT

JP2

(

vref

)

DIFF

SINGLE

Single-ended

(default)

SINGLE

DIFF

Differential

The OME-A-822PGL/PGH offers 16 single-ended or 8 differential analog input channels.

The JP3 jumper sets the inputs to single-ended or differential mode. You can not select

single-ended and differential simultaneously.

Refer to Sec. 2.9 first.

OME-A-822PGL/PGH Hardware Manual ---- 12

2.3.4 JP4 : A/D Trigger Source Selection

EXTTRG

INTTRG

Internal

Trigger

(default)

EXTTRG

INTTRG

External

Trigger

The OME-A-822PGL/PGH supports two trigger types, internal trigger and

external trigger. The external trigger comes from ExtTrg, CN3 pin 17.

There are two types of internal triggers, software trigger and pacer trigger.

More detailed information is given in section 2.4.8.

2.3.5 JP5 : Interrupt Level Selection

NO Interrupt

IRQ 3 4 5 6 7 9 10 11 12 14 15 NC

Interrupt 15

(default)

IRQ 3 4 5 6 7 9 10 11 12 14 15 NC

The interrupt channel can not be shared. The OME-A-822 software driver can support

8 different cards in one system but only 2 of these cards can use the interrupt transfer

function.

OME-A-822PGL/PGH Hardware Manual ---- 13

2.3.6 JP6 : User Timer/Counter Clock Input

Selection

Internal 2M

Clock

(default)

INTCL

K

EXTCLK

External

Clock

INTCL

K

EXTCLK

The OME-A-822PGL/PGH has 3 independent 16 bit timer/counters.

The cascaded counter1 and counter2 are used as a pacer timer. Counter0 can

be used as a user programmable timer/counter. The user programmable

timer/counter can be set to 2M internal clock or external clock ExtCLK,

CN3 pin 37. The block diagram is given in section 2.6. The clock source must

be very stable. Using the 2M internal clock is strongly suggested.

The OME-A-822PGL/PGH software driver uses counter0 as a machine

independent timer. If users program calls the A-822_Delay() subroutine,

counter0 will be programmed as a machine independent timer. More detailed

information is provided in section 2.6.

NOTE : if you use A-822_Delay(), the JP6 jumper must

be set to internal 2M clock.

OME-A-822PGL/PGH Hardware Manual ---- 14

2.3.7 JP7 : DMA DACK Selection,

JP8 : DMA DRQ Selection

JP8

DAC

K

2

6

1

5

JP7

DR

Q

2

6

1

5

NO DMA

JP8

JP7

1

5

2

6

DR

Q

1

5

2

6

DAC

K

DMA 1

(default)

JP8

JP7

1

5

2

6

DR

Q

DAC

K

1

5

2

6

DMA 3

The DMA channel can not shared. The OME-A-822 software driver can support 8

different boards in one PC based system, but only two of these boards can use the DMA

transfer function.

OME-A-822PGL/PGH Hardware Manual ---- 15

2.4 I/O Register Address

The OME-A-822PGL/PGH occupies 16 consecutive PC I/O addresses. The

following table lists the registers and their locations.

Address Read Write

Base+0 8254 Counter 0 8254 Counter 0

Base+1 8254 Counter 1 8254 Counter 1

Base+2 8254 Counter 2 8254 Counter 2

Base+3 Reserved 8254 Counter Control

Base+4 A/D Low Byte D/A Channel 0 Low Byte

Base+5 A/D High Byte D/A Channel 0 High Byte

Base+6 DI Low Byte D/A Channel 1 Low Byte

Base+7 DI High Byte D/A Channel 1 High Byte

Base+8 Reserved A/D Clear Interrupt Request

Base+9 Reserved A/D Gain Control

Base+A Reserved A/D Multiplexer Control

Base+B Reserved A/D Mode Control

Base+C Reserved A/D Software Trigger Control

Base+D Reserved DO Low Byte

Base+E Reserved DO High Byte

Base+F Reserved Reserved

OME-A-822PGL/PGH Hardware Manual ---- 16

2.4.1 8254 Counter

The 8254 Programmable timer/counter has 4 registers from Base+0 through

Base+3. For detailed programming information on the 8254 , please refer to

Intel‘s “Microsystem Components Handbook”.

Address Read Write

Base+0 8254 Counter 0 8254 Counter 0

Base+1 8254 Counter 1 8254 Counter 1

Base+2 8254 Counter 2 8254 Counter 2

Base+3 Reserved 8254 Counter Control

2.4.2 A/D Input Buffer Register

(READ) Base+4 : A/D Low Byte Data Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

D7 D6 D5 D4 D3 D2 D1 D0

(READ) Base+5 : A/D High Byte Data Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 0 0 READY D11 D10 D9 D8

A/D 12 bit data : D11…..D0, D11=MSB, D0=LSB

READY =1 : A/D 12 bit data not ready

=0 : A/D 12 bit data is ready

The low 8 bit A/D data is stored in address BASE+4 and the high 4 bit data is stored in

address BASE+5. The READY bit is used as an indicator for the A/D conversion. When an

A/D conversion is completed, the READY bit will clear to zero.

OME-A-822PGL/PGH Hardware Manual ---- 17

2.4.3 D/A Output Latch Register

(WRITE) Base+4 : Channel 1 D/A Low Byte Data Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

D7 D6 D5 D4 D3 D2 D1 D0

(WRITE) Base+5 :Channel 1 D/A High Byte Data Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

X X X X D11 D10 D9 D8

(WRITE) Base+6 : Channel 2 D/A Low Byte Data Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

D7 D6 D5 D4 D3 D2 D1 D0

(WRITE) Base+7 :Channel 2 D/A High Byte Data Format

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

X X X X D11 D10 D9 D8

D/A 12 bit output data: D11..D0, D11=MSB, D0=LSB, X=don‘t care

The D/A converter will convert the 12 bit digital data to an analog output. The lower 8 bits

of D/A channel 1 are stored in the address BASE+4 and the high 4 bits are stored in the

address BASE+5. The address BASE+6 and BASE+7 store the 12 bit data for D/A channel

2. The D/A output latch registers are designed with a “double buffered” structure, so the

analog output latch registers will not update until the high 4 bit digital data are written. If the

user sends the high 4 bit data first, the D/A 12 bit output latch registers will update at once.

So the lower 8 bits will be the previous data latched in the register. This action will cause

an error on the D/A output voltage. The user must send the low 8 bits first and then

send the high 4 bits to update the 12 bit D/A output latch register.

NOTE : Send the low 8 bits first, then send the high 4 bits.

OME-A-822PGL/PGH Hardware Manual ---- 18

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Omega OME-A822PG User manual

Omega OME-A822PG User manual

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