Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG manuale d’uso

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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 Specifica tions _________________________________________________________ 5 1.3.1 Power Consumpti[...]

2.4.9 A/D Software Trigge r Cont rol Register _________________________________________ 23 2.4.10 D/O Output Latch R egister __________________________________________________ 24 2.5 Digital I/O __________________________________________________________ 25 2.6 8254 Timer/ Counter __________________________________________________ 26 2.7 A/D Co nver[...]

1. Introduction 1.1 General Description The OME-A-822PGL/PGH is a high performa nce, 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 provide s 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 [...]

1.3 Specifications 1.3.1 Power Consumption : z +5V @960 m A m a xi m u m , 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.[...]

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 lim it +/- 10V z Output drive : +/- 5mA z settling time : 0.6 microseconds to 0.01% for full scale step 1.3[...]

1.3.7 Programmable Timer/Counter z Type : 82C54 -8 programmable tim er/counter z Counters : Counter1 and counter2 are cascaded as a 32 bit pacer timer. Counter0 is a user available timer/count er. The software driver also uses counter0 to implement a m achine independent timer. z Clock input frequency : DC to 10 MHz z Pacer output : 0.00047Hz to 0.[...]

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/PG[...]

2. Hardware Configuration 2.1 Board Layout OME-A-822PGL/PGH VR1/2/3/4/5/6/7 ISA BUS ISA BUS CN2 CN1 J P 5 S W 1 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. A 9 A 8 A 7 A 6 A 5 A 4 6 5 4 3 2 1 ON SW1 : BASE ADDRESS BASE ADDR A 9 A 8 A 7 A 6 A 5 A 4 200-20F OFF ON ON ON ON ON 210-21F OFF ON ON ON ON OFF 220-22F( ; ) OFF ON ON O[...]

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 2E8-2E[...]

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[...]

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 trigge r. More detailed inf[...]

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 tim er/counter. The user programm able timer/counter ca[...]

2.3.7 JP7 : DMA DACK Selection, JP8 : DMA DRQ Selection J P 8 DAC K 2 6 1 5 J P 7 DR Q 2 6 1 5 NO DMA J P 8 J P 7 1 5 2 6 DR Q 1 5 2 6 DAC K DMA 1 (default) J P 8 J P 7 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 ca[...]

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 [...]

2.4.1 8254 Counter The 8254 Programmable tim er/counter has 4 registers from Base+0 through Base+3. For detailed programming inform ation 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 Bas[...]

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 Bi[...]

2.4.4 D/I Input Buffer Register (READ) Base+6 : D/I Input Buffer 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+7 : D/I Input Buffer High Byte Data Format Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 D15 D14 D13 D12 D11 D10 D9 D8 D/I 16 bits input data : D15..D0, D15=MSB, D0=LSB The OME-A[...]

2.4.6 A/D Gain Control Register (WRITE) Base+9 : A/D Gain Control Register Format Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 X X X X GAIN3 GAI N2 GAIN1 GAIN0 The only difference between the OME-A-822PGL and OME-A-822PGH is the GAIN control function. The OME-A-822PGL provides gains of 1/2/4/8 and the OME-A-822PGH provides gains of 1/10/100/1000[...]

OME-A-822PGH GAIN CONTROL CODE TABLE BI/UN Settling Time GAIN Input Range GAIN3 GAIN2 GAIN1 GAIN0 BI 23 us 1 +/- 5V 0 0 0 0 BI 28 us 10 +/- 0.5V 0 0 0 1 BI 140 us 100 +/- 0.05V 0 0 1 0 BI 1300 us 1000 +/- 0.005V 0 0 1 1 UNI 23 us 1 0 to 10V 0 1 0 0 UNI 28 us 10 0 to 1V 0 1 0 1 UNI 140 us 100 0 to 0.1V 0 1 1 0 UNI 1300 us 1000 0 to 0.01V 0 1 1 1 BI [...]

2.4.8 A/D Mode Control Register (WRITE) Base+B : A/D Mode Control Register Format Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 X X X X X D2 D1 D0 X=don‘t care J P 4 S e l e c t I n t e r n a l T r i g g e r Mode Select Trigger Type Transfer Type D2 D1 D0 Software Trig Pacer Trig Software Interrupt DMA 0 0 0 X X X X X 0 0 1 Select X Select X X [...]

The software driver provides three data transfer methods, polling, interrupt and DMA. The polling subroutine, A-822_AD_PollingVar() or A-822_AD_PollingArray(), set the A/D mode control register to 0x01. This control word enables software trigger and polling transfer. The interrupt subroutine, A-822_AD_ INT_START(…), sets the A/D mode control mode[...]

2.4.10 D/O Output Latch Register (WRITE) Base+D : D/O Output Latch 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+E : D/O Output Latch High Byte Data Format Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 D15 D14 D13 D12 D11 D10 D9 D8 D/O 16 bits output data : D15..D0, D15=MSB, D0=LSB The O[...]

2.5 Digital I/O The OME-A-822PGL/PGH provides 16 di gital input channels and 16 digital output channels. All levels are TTL compatible. The connection diagram and block diagram are given below: Latch Reset Power on reset Reset Latch D0..D7 Base+D Base+E D0..D7 D8..D15 1..8 9..16 Output Latch Register Output Latch Register CN2 17..18 DGND DGND DI TT[...]

2.6 8254 Timer/Counter The 8254 Programmable tim er/counter has 4 registers from Base+0 through Base+3. For detailed programming inform ation about the 8254 , please refer to Intel‘s “Microsystem Components Handbook”.The block diagram is shown below. Cin : clock input Cout : clock output INTCLK : internal clock CN3 : connector CN3 Cin Gate Co[...]

2.7 A/D Conversion This section explains how to perfor m A/D conversions. The A/D conversion can be triggered 3 ways, by software trigger, by pacer trigger or by external trigger to the A/D converter. At the end of A/D conversion, it is possible to transfer data by 3 ways, those are polling , interrupt and DMA. Before using the A/D conversion funct[...]

2.7.1 A/D conversion flow Before using the A/D converter, the user s hould configure the following hardware settings: 1. select single-ended or differential input (JP3) (refer to Sec. 2.9 first) 2. select internal trigger or external trigger (JP4) 3. select IRQ level if needed (JP5) 4. select DMA channel if needed (JP7,JP8) 5. select internal clock[...]

2.7.2 A/D Conversion Trigger Modes OME-A-822PGL/PGH supports three trigger modes. 1 : Software Trigger : Write any value to the A/D software trigge r control register, BASE+A, to initiate an A/D conversion cycle. This mode is very si mple but it is very difficult to achieve a precise sample rate. 2 : Pacer Trigger Mode : The block diagram of the pa[...]

2.7.4 Using software trigger and polling transfer If the user needs to control the A/D converter without the A-822 software driver, software trigger and polling transfer is suggested. The program steps are listed below: 1. send 0x01 to the A/D mode control register (software trigger + polling transfer) (refer to Sec. 2.4.8) 2. send channel number t[...]

2.8 D/A Conversion The OME-A-822PGL/PGH provides two 12 bit D/A converters. Before using the D/A converter function, you should address the following items: z D/A output register, BASE+4/BASE+5/BASE+6/BASE+7, (sec. 2.4.3) z JP1 jumper set to internal reference voltage -5V or -10V (sec. 2.3.1) z JP2 jumper set to internal or external reference volta[...]

2.9 Analog Input Signal Connection The OME-A-822 can measure signals in the si ngle-ended or differential mode. In the differential mode each channel has a unique signal HIGH and signal LOW connection. In the single-ended mode all channels have a uni que signal HIGH connection but share a comm on LOW or ground connection. Differential connecti ons [...]

Figure 1-A Figure 1-B If the source is grounded, a second ground connection on the card could res ult in a ground loop. OME-A-822PGL/PGH Hardware Manual ---- 33[...]

Figure 2 Figure 3 OME-A-822PGL/PGH Hardware Manual ---- 34[...]

Figure 4 R is a shunt resistor. A 250 Ω shunt resistor converts 4-20mA to 1-5Vdc. Signal Shielding z The signal shielding is the same for the connections shown in Figure 1 to Figure 4 z Use a single connection to frame ground (not A.GND or D.GND) Vin Frame Ground OME-A-822PGL/PGH A.GND D.GND OME-A-822PGL/PGH Hardware Manual ---- 35[...]

2.10 Using OME-DB-8225 CJC Output The OME-DB-8225 daughter board contains built-in cold junction compensation (CJC) circuitry that provides a 10mV per Deg C output. With 0.0 Volts @ -273 Deg C. The OME-A-822 should be protected from drafts and direct sunlight in order to accura tely reflect room temperature. CJC Calibration: 1. Connect the OME-A-82[...]

3. Connector The OME-A-822PGL/PGH provides th ree connectors. Connector 1, CN1 contains the 16 digital inputs. Connector 2, CN2, contains the 16 digital outputs . Connector 3, CN3, contains the analog inputs, analog outputs and timer/counter I/O . 3.1 CN1/CN2/CN3 Pin Assignment CN1 : Digital Input Pin Assignment. Pin Number Description Pin Number D[...]

SINGLE-ENDED SIGNAL MODE CN3 : Analog input, Analog output a nd Timer/Counter Pin Assignment. Pin Number Description Pin Num ber Description 1 Analog Input 0/+ 20 Analog Input 8/+ 2 Analog Input 1/+ 21 Analog Input 9/+ 3 Analog Input 2/+ 22 Analog Input 10/+ 4 Analog Input 3/+ 23 Analog Input 11/+ 5 Analog Input 4/+ 24 Analog Input 12/+ 6 Analog In[...]

DIFFERENTIAL SIGNALS CN3 : Analog input, Analog output a nd Timer/Counter Pin Assignment. Pin Number Description Pin Num ber Description 1 Analog Input 0/+ 20 Analog Input 0/- 2 Analog Input 1/+ 21 Analog Input 1/- 3 Analog Input 2/+ 22 Analog Input 2/- 4 Analog Input 3/+ 23 Analog Input 3/- 5 Analog Input 4/+ 24 Analog Input 4/- 6 Analog Input 5/+[...]

3.2 Daughter Board The OME-A-822PGL/PGH can be connected with many different daughter boards. The daughter boards are described below: 3.2.1 OME-DB-8225 The OME-DB-8225 provides an on-board CJC (Cold Junction Compensation) circuit for thermocouple measurem ent and a terminal block for easy signal connection. The CJC is connected to A/D channel_0. T[...]

4. Calibration The OME-A-822PGL/PGH is factory calibrated fo r optimum performance. Recalibration is suggested for high vibration environments . The following items are required for calibrating the OME-A-822PGL/PGH. z One 6 digit multimeter z One stable voltage source (4.9988V) z Diagnostic program : this program included with the OME-A822PGL/PGH. [...]

4.2 D/A Calibration 1. Run the A82 X DIAG.EXE program 2. Press the “Right Arrow Key” to select “CALIBRATION”. 3. Press the “Down Arrow Key” to select “G. D/A REFERENCE”. 4. Press the “Enter Key” 5. Connect VREF, pin 11 of CN3, to a DVM (Digital Volt Meter) 6. Adjust VR5 until the DVM=4.9988V 7. Press the “ESC Key” 8. Select [...]

4.3 A/D Calibration 1. Run the A82XDIAG.EXE 2. Press “Right Arrow Key” to select “CALIBRATION” 3. Press the “Down Arrow Key” to select “C. A/D REFERENCE” item. 4. Press the “Enter Key” 5. Input a stable 4.9988V to A/D channel 0, pin 1 of CN3 6. Adjust VR2 until the A/D data shown on the screen is between 4094 to 4095 7. Press th[...]

5. Diagnostic Utility 5.1 Introduction The A82XDIAG.EXE diagnostic utility is a m enu-driven program which allows complete testing of the OME-A-822PGL/P GH board. To run the diagnostic utility, change to the subdirectory used in the in stallation process (C:OME-A-822 for example). Then type " A82XDIAG " <Enter> to st art the applic[...]

Although you can continue by pressing any ke y, it is recommended that the jum per situation be corrected since m any operations in the A82XDIA utility check the I/O base address and report an error if the confi guration file and the actual jumper settings do not match. OME-A-822PGL/PGH Hardware Manual ---- 45[...]

5.2 Running The Diagnostic Utility The initial screen of A82XDIAG is shown below. There are five main menus in the initial screen. They are Setup, Calibration, FunctionTest, sPecialTest and Help. Use the Left or Right key to select the main m enu. Then use the Up or Down key to select the menu item. Alternately, the user can press the command key t[...]

5.2.1 Setup The Setup menu allows the user to setup the boa rd configuration. There are six functions in this muen, Card type, Base Addresss, DMA no, IRQ no, Save option, eXit. Card type : <Up/Do w n> key to select A-822PGL/PGH, <Enter> key to select Base Address : <Up/Down> key to select base address, <Enter> key to select [...]

DMA no and IRQ no selection screen OME-A-822PGL/PGH Hardware Manual ---- 48[...]

5.2.2 CALIBRATION The CALIBRATION menu contains ten submenu item s: they are, D/A Reference voltage, D/A Channel 0 gain, D/A channe l 1 gain, A/D Gain, A/D Offset, A/D Bi polar Offset, A/D Unipolar Offset. These items relate to the calibration of the OME-A-822PGL/PGH. The CALIBRATION main menu, is a graphic repr esentation of the OME-A-822PGL/PGH b[...]

5.2.3 FUNCTION TEST The FUNCTION TEST main menu contains seve n submenus: they are D/A TEST, Digital I/O, A/D MULTIPLEX, A/D use IRQ, A/D use DMA, A/D GAIN, Timer 0. The main menu is shown below. The “D/A TEST” menu, is shown below. OME-A-822PGL/PGH Hardware Manual ---- 50[...]

<D/A TEST > Test Screen z Assume D/A output range 0 to 5V z Send D/A output to both channels simultaneously z Press <p> pause screen, press <p> again release screen z Press <Up> key to increase screen delay z Press <Down > key to decrease screen delay z Press <ESC> key to quit OME-A-822PGL/PGH Hardware Manual ---[...]

<Digital I/O> Test Screen z Connect CN1 to CN2 z 16 bit up counter is sent to 16 channel DO z 16 channel DO is connected to 16 channel DI z 16 channel DI are readback and show on the screen z If DO equals DI then OK shown on screen z If DO does not equal DI then Error shown on screen z Press <p> pause screen, press <p> again relea[...]

<A/D Multiplexer> Test Screen z Assume 16 channel single-ended, bipolar, gain=1, analog input signals z Input range from -5V to +5V z Continue to scan 16 channels z Press <ESC> key to quit OME-A-822PGL/PGH Hardware Manual ---- 53[...]

<A/D use IRQ> Test Screen z Assume single-ended, bipolar, gain=1 z Use <PgUp> key to select the next channel z Use <PgDn> key to select the previous channel z Use <Up>/<Down> key to adjust C1 z Use <Left>/<Right> key to adjust C2 z The sample rate = The pacer timer rate = 2000/(C1*C2) K z Use <p> key [...]

<A/D use DMA> Test Screen z Assume single-ended, bipolar, gain=1 z Use <PgUp> key to select the next channel z Use <PgDn> key to select the previous channel z Use <Up>/<Down> key to adjust C1 z Use <Left>/<Right> key to adjust C2 z Sample rate = pacer timer rate = 2000/(C1*C2) K z Use <p> key to pause[...]

<DA GAIN> Test Screen z Assume single-ended, bipolar, gain=1, A/D channel 0 connected to D/A channel 0 z Use <Up>/<Down> key to adjust gain control code z Use <Left>/<Right> key to adjust D/A output value z Use software trigger and polling transfer mode z Press <ESC> key to quit OME-A-822PGL/PGH Hardware Manual -[...]

<Timer 0> Test Screen z Assume JP6 set to internal 2M clock z If the counter0 is functioning normally, the value will increment autom atically. OME-A-822PGL/PGH Hardware Manual ---- 57[...]

5.2.4 SPECIAL TEST The SPECIAL TEST menu contains four subme nu item s: they are D/A Volt Set, DIO Bit Pattern, IRQ Clock Test and DMA Clock Test. These functions are reserved for factory testing. OME-A-822PGL/PGH Hardware Manual ---- 58[...]

5.2.5 Help The Help menu will display the software version as shown below. OME-A-822PGL/PGH Hardware Manual ---- 59[...]

W ARRANTY / DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OME GA ’ s W ARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA ’ s cust[...]

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