Page 2 - OMEGAnet
Servicing North America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: [email protected] Canada: 976 BergarLaval (Quebec) H7L 5A1, CanadaTEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: [email protected] For immediate technical o...
Page 3 - Hardware User’s Manual
OME-A-8111 Hardware User’s Manual OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 1
Page 4 - Table of Contents
Table of Contents 1. Introduction_________________________________________________________ 4 1.1 General Description ___________________________________________________ 4 1.2 Features _____________________________________________________________ 4 1.3 Specifications _________________________________...
Page 6 - General Description
1. Introduction 1.1 General Description The OME-A-8111 is a high performance, multifunction (analog and digital I/O) board for the PC AT compatible computer with the ISA bus. The OME-A-8111 provides programmable gain (1, 2, 4, 8 and 16). The OME-A-8111 contains a 12-bit ADC with up to 8 single-ended...
Page 9 - Product Check List
1.3.7 Programmable Timer/Counter z Type : 82C54 -8 programmable timer/counter z Counters: The counter1 and counter2 are cascaded as a 32-bit pacer timer. z Pacer output : 0.00047 Hz to 0.5 MHz z Input Gate : TTL compatible z Internal Clock : 2 MHz 1.3.8 Applications z Signal analysis z FFT & fre...
Page 10 - Hardware Configuration
2. Hardware Configuration 2.1 Board Layout B B A D S -7 7 4 ON 1234 56 JP 1 JP 2 8111 SW1 987 654 () A BAS S ADDR ESS A1 P1 A31 12 19 20 C N 3 D /C O U T C N 2 D /C IN 20 2 1 19 A NA I /0 CN1 V R 1 V R2VR3 V R4VR5 OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 8
Page 12 - Selection
The PC I/O port mapping 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-...
Page 19 - polling or interrupt-transfer
The pacer trigger can control the sampling rate very precisely. So the converted data can be used to reconstruct the waveform of the analog input signal . In pacer trigger mode, the pacer timer will periodically generate trigger signals to the A/D converter. This converted data can be transfer to th...
Page 23 - by software trigger by pacer trigger.; polling and interrupt
2.7 A/D Conversion This section explains how to perform A/D conversions. The A/D conversion can be performed by software trigger by pacer trigger. At the end of the A/D conversion, it is possible to transfer data by polling and interrupt before using the A/D conversion function; users should notice ...
Page 24 - doesn’t monitor the settling time; needs a trigger signal to start an A/D conversion cycle
2.7.1 A/D conversion flow Then the user must decide which A/D conversion mode will be used. The software driver supports three different modes. The user can control the A/D conversion by polling mode very easily (sec. 2.4.9) . It is recommended to use the software driver if using interrupt or DMA mo...
Page 25 - Using software trigger and polling transfer
2.7.3 A/D Transfer Modes OME-A-8111 supports two transfer modes. 1 : polling transfer : This mode can be used with all trigger modes. Detailed information is given in section 2.4.8.The software scans A/D high byte data register, BASE+5, until READY_BIT=0.The low byte data is also ready in BASE+4. 2 ...
Page 26 - The
2.8 D/A Conversion The OME-A-8111 provides two 12-bit D/A converters. Before using the D/A conversion function, user should notice the following issues: z D/A output register, BASE+4/BASE+5/BASE+6/BASE+7 (sec. 2.4.3) . z JP1/JP2 selects internal/external reference voltage (sec. 2.4.1) . NOTE: The DA...
Page 27 - Analog Input Signal Connection; Signal Shielding; Frame Ground; Vin
2.9 Analog Input Signal Connection FIG 1: Connecting analog input configuration A/D CHn OME-A-8111 AGND A/D CH0 Es Signal Shielding z Signal shielding connections are shown in Fig1. z Use single-point connection to frame ground (not AGND or DGND) Frame Ground OME-A-8111 AGND DGND Vin OME-A-8111 Hard...
Page 28 - Pin Assignment
2.10 Pin Assignment The OME-A-8111 provides three connectors. Connect 1, CN1 functions for analog input & analog output input. Connector 2, CN2, functions as 16 digital outputs. Connector 3, CN3, function as a digital output. CN1/CN2/CN3 Pin Assignment CN1: Analog input/Analog output/Connect Pin...
Page 30 - 6-channel isolated digital input
2.11 Daughter Board The OME-A-8111 can be connected with many different daughter boards. The function of these daughter boards is described as follows. 2.11.1 OME-CA-4002 The OME-CA-4002 is a 37-pin D-Sub male connector. It can directly connect to a 37-pin D-sub connector. 2.11.2 OME-DB-16P The OME-...
Page 31 - Calibration VR Description
3. Calibration The OME-A-8111 is calibrated to its best state of operation. For environments with large vibration, recalibration is recommended. Before calibrating the OME-A-8111, users should have the following items: z One 6-digit multi-meter. z One stable voltage source (4.9988V) z Diagnostic pro...
Page 33 - RETURN REQUESTS/INQUIRIES
WARRANTY/ DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for aperiod of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping...
