User’s Guide
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OMG-COMM232-PCI
Dual Port PCI RS-232 Interface Board
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Contents
INTRODUCTION..........................................................................1
OVERVIEW................................................................................................ 1
WHAT’S INCLUDED................................................................................ 1
FACTORY DEFAULT SETTINGS............................................................ 1
CARD SETUP ..............................................................................2
ADDRESS AND IRQ SELECTION ............................................................ 2
CLOCK MODES........................................................................................ 2
BAUD RATES AND DIVISORS FOR THE ‘DIV2’ MODE........................ 3
BAUD RATES AND DIVISORS FOR THE ‘DIV1’ MODE........................ 5
INSTALLATION ..........................................................................7
OPERATING SYSTEM INSTALLATION................................................. 7
WINDOWS 95/98/NT............................................................................... 7
WINDOWS 3.1X........................................................................................ 7
DOS........................................................................................................... 7
OTHER OPERATING SYSTEMS.............................................................. 7
HARDWARE INSTALLATION................................................................. 7
TECHNICAL DESCRIPTION .........................................................8
INTERRUPTS............................................................................................ 8
WHY USE AN ISP?................................................................................... 9
CONNECTOR PIN ASSIGNMENTS.......................................................... 9
RS-232.................................................................................................... 9
SPECIFICATIONS ......................................................................10
ENVIRONMENTAL SPECIFICATIONS.................................................. 10
MANUFACTURING................................................................................ 10
POWER CONSUMPTION........................................................................ 10
MEAN TIME BETWEEN FAILURES (MTBF) ..................................... 10
PHYSICAL DIMENSIONS........................................................................ 10
APPENDIX A - TROUBLESHOOTING .........................................11
APPENDIX B - HOW TO GET ASSISTANCE ..............................12
APPENDIX C - ELECTRICAL INTERFACE...................................13
RS-232.................................................................................................... 13
APPENDIX D - ASYNCHRONOUS COMMUNICATIONS ...............14
APPENDIX E - SILK-SCREEN ....................................................15
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APPENDIX F - COMPLIANCE NOTICES .....................................16
FEDERAL COMMUNICATIONS COMMISSION STATEMENT............ 16
EMC DIRECTIVE STATEMENT........................................................... 16
Figures
Figure 1 - Clocking Mode 'Divide By 4’............................................................2
Figure 2 - Clocking Mode 'Divide By 2’............................................................3
Figure 3 - Clocking Mode 'Divide By 1’............................................................5
Figure 4 - Asynchronous Communications Bit Diagram.............................14
© 1998f Omega Engineering, Incorporated. All rights reserved.
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Introduction
Introduction
Overview
The Omega Engineering OMG-COMM+232.PCI is a two channel PCI Bus serial
I/O adapter for the PC and compatibles. It provides two RS•232 serial ports
supporting data rates up to 460.8K bps.
The OMG-COMM+232.PCI works seamlessly with the standard operating
system serial driver. UART upgrades are available providing 32 and 64 byte
FIFOs.
What’s Included
The OMG-COMM+232.PCI is shipped with the following items. If any of these
items are missing or damaged, contact the supplier.
·
·
·
OMG-COMM+232.PCI Serial I/O Adapter
Serial Utility Software
User Manual
Factory Default Settings
The OMG-COMM+232.PCI factory default settings are as follows:
Port #
Port 1
Port 2
Clock Mode
DIV4
DIV4
To install the OMG-COMM+232.PCI using factory default settings, refer to
Installation on page 7.
For your reference, record installed OMG-COMM+232.PCI settings below:
Port #
Port 1
Port 2
Clock Mode
Omega Engineering COMM+232.PCI
Page 1
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Card Setup
Card Setup
Address and IRQ selection
The OMG-COMM+232.PCI is automatically assigned I/O addresses and IRQs
by your motherboard BIOS. Only the I/O address may be modified by the user.
Adding or removing other hardware may change the assignment of I/O
addresses and IRQs.
Clock Modes
The OMG-COMM+232.PCI employs a unique clocking option that allows the
end user to select from divide by 4, divide by 2 and divide by 1 clocking modes.
These modes are selected at Headers J1C through J4C.
To select the Baud rates commonly associated with COM: ports (i.e. 2400, 4800,
9600, 19.2, … 115.2K Bps ) place the jumper in the divide by 4 mode (silk-screen
DIV4) position.
Figure 1 - Clocking Mode 'Divide By 4’
Omega Engineering COMM+232.PCI
Page 2
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Card Setup
To double these rates up to a maximum rate of 230.4K bps place the jumper in the
divide by 2 (silk-screen DIV2) position.
Figure 2 - Clocking Mode 'Divide By 2’
Baud Rates and Divisors for the ‘DIV2’ mode
The following table shows some common data rates and the rates you should
choose if using the adapter in the ‘DIV2’ mode.
For this Data Rate
1200 bps
Choose this Data Rate
600 bps
2400 bps
1200 bps
4800 bps
2400bps
9600 bps
4800 bps
19.2K bps
38.4K bps
57.6 K bps
115.2 K bps
230.4 K bps
9600 bps
19.2K bps
28.8K bps
57.6 K bps
115.2 K bps
If your communications package allows the use of Baud rate divisors, choose the
appropriate divisor from the following table:
For this Data Rate
1200 bps
Choose this Divisor
192
96
48
24
12
8
4
2
1
2400 bps
4800 bps
9600 bps
19.2K bps
38.4K bps
57.6K bps
115.2K bps
230.4K bps
Omega Engineering COMM+232.PCI
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Notes Page
Omega Engineering COMM+232.PCI
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Card Setup
To select the maximum data rate (460.8K bps) place the jumper in the divide by 1
(silk-screen DIV1) position.
Figure 3 - Clocking Mode 'Divide By 1’
Baud Rates and Divisors for the ‘DIV1’ mode
The following table shows some common data rates and the rates you should
choose if using the adapter in the ‘DIV1’ mode.
For this Data Rate
1200 bps
Choose this Data Rate
300 bps
2400 bps
600 bps
4800 bps
1200 bps
9600 bps
2400 bps
19.2K bps
57.6 K bps
115.2 K bps
230.4K bps
460.8K bps
4800 bps
14.4K bps
28.8K bps
57.6 K bps
115.2 K bps
If your communications package allows the use of Baud rate divisors, choose the
appropriate divisor from the following table:
For this Data Rate
1200 bps
Choose this Divisor
384
192
96
48
24
12
8
4
2
1
2400 bps
4800 bps
9600 bps
19.2K bps
38.4K bps
57.6K bps
115.2K bps
230.4K bps
460.8K bps
Omega Engineering COMM+232.PCI
Page 5
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Notes Page
Omega Engineering COMM+232.PCI
Page 6
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Installation
Installation
Operating System Installation
Windows 95/98/NT
Run Setup on Disk 2 of the Serial Utilities Software.
Windows 3.1x
Refer to the Win3x.hlp file in the \Win31 directory on Disk 1 of the Serial
Utilities Software.
DOS
Refer to the Readme.txt file found in the \DOS directory on Disk 1 of the
Serial Utilities Software.
Other Operating Systems
Refer to the appropriate directory on Disk 1 of the Serial Utilities Software.
Hardware Installation
The OMG-COMM+232.PCI can be installed in any of the PCI expansion slots
and contains several jumper straps for each port that must be set for proper
operation.
1. Turn off PC power. Disconnect the power cord.
2. Remove the PC case cover.
3. Locate an available PCI slot and remove the blank metal slot cover.
4. Gently insert the OMG-COMM+232.PCI into the slot. Make sure that the
adapter is seated properly.
5. Replace the screw.
6. Replace the cover.
7. Connect the power cord.
Installation is complete.
Omega Engineering COMM+232.PCI
Page 7
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Technical Description
Technical Description
The Omega Engineering OMG-COMM+232.PCI provides a PCI interface adapter
with 2 asynchronous serial ports providing a versatile interface for modems,
printers and plotters.
The OMG-COMM+232.PCI utilizes the 16550 UART. This chip features
programmable baud rates, data format, interrupt control and a 16-byte input and
output FIFO. Also available as an option is the 16C650 UART that provides a
deeper FIFO (32 bytes) and enhanced clocking features.
Interrupts
A good description of an interrupt and it’s importance to the PC can be found in
the book ‘Peter Norton’s Inside the PC, Premier Edition’:
“ One of the key things that makes a computer different from any other kind of
man-made machine is that computers have the capability to respond to the
unpredictable variety of work that comes to them. The key to this capability is a
feature known as interrupts. The interrupt feature enables the computer to
suspend whatever it is doing and switch to something else in response to an
interruption, such as the press of a key on the keyboard.”
A good analogy of a PC interrupt would be the phone ringing. The phone ‘bell’
is a request for us to stop what we are currently doing and take up another task
(speak to the person on the other end of the line). This is the same process the
PC uses to alert the CPU that a task must be preformed. The CPU upon receiving
an interrupt makes a record of what the processor was doing at the time and
stores this information on the ‘stack’; this allows the processor to resume its
predefined duties after the interrupt is handled, exactly where it left off. Every
main sub-system in the PC has it’s own interrupt, frequently called an IRQ (short
for Interrupt ReQuest).
In these early days of PC’s Omega Engineering decided that the ability to share
IRQs was an important feature for any add-in I/O card. Consider that in the IBM
XT the available IRQs were IRQ0 through IRQ7. Of these interrupts only IRQ2-5
and IRQ7 were actually available for use. This made the IRQ a very valuable
system resource. To make the maximum use of these system resources Omega
Engineering devised an IRQ sharing circuit that allowed more than one port to
use a selected IRQ. This worked fine as a hardware solution but presented the
software designer with a challenge to identify the source of the interrupt. The
software designer frequently used a technique referred to as ‘round robin
Omega Engineering COMM+232.PCI
Page 8
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Technical Description
polling’. This method required the interrupt service routine to ‘poll’ or interrogate
each UART as to its interrupt pending status. This method of polling was
sufficient for use with slower speed communications, but as modems increased
their throughput abilities this method of servicing shared IRQs became
inefficient.
Why use an ISP?
The answer to the polling inefficiency is the Interrupt Status Port (ISP). The ISP
is a read only 8-bit register that sets a corresponding bit when an interrupt is
pending. Port 1 interrupt line corresponds with Bit D0 of the status port, Port 2
with D1 etc. The use of this port means that the software designer now only has
to poll a single port to determine if an interrupt is pending.
The ISP is at Base+7 on each port (Example: Base = 280 Hex, Status Port = 287,
28F… etc.). The OMG-COMM+232.PCI will allow any one of the available
locations to be read to obtain the value in the status register. Both status ports
on the OMG-COMM+232.PCI are identical, so any one can be read.
Example: This indicates that Channel 2 has an interrupt pending.
Bit Position:
Value Read:
7
0
6
0
5
0
4
0
3
0
2
0
1
1
0
0
Connector Pin Assignments
RS-232
Name
Pin #
Mode
TD
Transmit Data
Request To Send
Data Term Ready
Ground
3
7
4
5
2
1
6
8
9
Output
Output
Output
RTS
DTR
GND
RD
DCD
DSR
CTS
RI
Receive Data
Input
Input
Input
Input
Input
Data Carrier Detect
Data Set Ready
Clear To Send
Ring Indicator
Note: These assignments meet EIA/TIA/ANSI-574 DTE for DB-9 type
connectors.
Omega Engineering COMM+232.PCI
Page 9
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Specifications
Specifications
Environmental Specifications
Specification
Temperature Range
Operating
0º to 50º C
Storage
-20º to 70º C
(32º to 122º F)
10 to 90% R.H.
Non-Condensing
(-4º to 158º F)
10 to 90% R.H.
Non-Condensing
Humidity Range
Manufacturing
·
All Omega Engineering Printed Circuit boards are built to U. L. 94V0 rating
and are 100% electrically tested. These printed circuit boards are solder mask
over bare copper or solder mask over tin nickel.
Power Consumption
Supply line
Rating
+12VDC
50 mA
-12VDC
50 mA
+5 VDC
480 mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Board length
Board Height including Goldfingers
Board Height excluding Goldfingers
5.0 inches
4.2 inches
3.875 inches
(12.7 cm)
(10.66 cm)
(9.841 cm)
Omega Engineering COMM+232.PCI
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Appendix A - Troubleshooting
Appendix A - Troubleshooting
A Serial Utility Diskette is supplied with the Omega Engineering adapter and will
be used in the troubleshooting procedures. By using this diskette and following
these simple steps, most common problems can be eliminated without the need to
call Technical Support.
1. Identify all I/O adapters currently installed in your system. This includes
your on-board serial ports, controller cards, sound cards etc. The I/O
addresses used by these adapters, as well as the IRQ (if any) should be
identified.
2. Configure your Omega Engineering adapter so that there is no conflict with
currently installed adapters. No two adapters can occupy the same I/O
address.
3. Make sure the Omega Engineering adapter is using a unique IRQ. While the
Omega Engineering adapter does allow the sharing of IRQs, many other
adapters (i.e. SCSI adapters & on-board serial ports) do not. The IRQ is
typically selected via an on-board header block. Refer to the section on Card
Setup for help in choosing an I/O address and IRQ.
4. Make sure the Omega Engineering adapter is securely installed in a
motherboard slot.
5. When running DOS, Windows 3.x or other operating systems refer to the
Serial Utilities Disk 1 and the User Manual to verify that the Omega
Engineering adapter is configured correctly. The supplied software contains
a diagnostic program 'SSD' that runs under DOS and will verify if an adapter
is configured properly. This diagnostic program is written with the user in
mind and is easy to use. Refer to the README.txt file on the supplied
diskette for detailed instructions on using 'SSD'.
6. For Windows 95/98 and Windows NT, the diagnostic tool 'WinSSD' is
installed in the Omega Engineering folder on the Start Menu during the
setup process. First find the ports using the Device Manager, then use
'WinSSD' to verify that the ports are functional.
Always use the Omega Engineering diagnostic software when troubleshooting a
problem. This will help eliminate any software issues and identify any hardware
conflicts
Omega Engineering COMM+232.PCI
Page 11
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Appendix B - How To Get Assistance
Appendix B - How To Get Assistance
Please refer to Appendix A - Troubleshooting prior to calling Technical Support.
1. Read this manual thoroughly before attempting to install the
adapter in your system.
2. When calling for technical assistance, please have your user
manual and current adapter settings. If possible, please have the
adapter installed in a computer ready to run diagnostics.
RETURN AUTHORIZATION MUST BE OBTAINED FROM OMEGA
ENGINEERING BEFORE RETURNED MERCHANDISE WILL BE ACCEPTED.
AUTHORIZATION CAN BE OBTAINED BY CALLING OMEGA
ENGINEERING AND REQUESTING
AUTHORIZATION (RMA) NUMBER.
A
RETURN MERCHANDISE
Omega Engineering COMM+232.PCI
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Appendix C – Electrical Interface
Appendix C - Electrical Interface
RS-232
Quite possibly the most widely used communication standard is RS-232. This
implementation has been defined and revised several times and is often referred
to as RS-232 or EIA/TIA-232. The IBM PC computer defined the RS-232 port on a
9 pin D sub connector and subsequently the EIA/TIA approved this
implementation as the EIA/TIA-574 standard. This standard is defined as the
9-Position Non-Synchronous Interface between Data Terminal Equipment and
Data Circuit-Terminating Equipment Employing Serial Binary Data
Interchange. Both implementations are in wide spread use and will be referred to
as RS-232 in this document. RS-232 is capable of operating at data rates up to 20
Kbps at distances less than 50 ft. The absolute maximum data rate may vary due
to line conditions and cable lengths. RS-232 is a single ended or unbalanced
interface, meaning that a single electrical signal is compared to a common signal
(ground) to determine binary logic states. The RS-232 and the EIA/TIA-574
specification define two types of interface circuits, Data Terminal Equipment
(DTE) and Data Circuit-Terminating Equipment (DCE). The OMG-
COMM+232.PCI is a DTE device.
Omega Engineering COMM+232.PCI
Page 13
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Appendix D - Asynchronous Communications
Appendix D - Asynchronous Communications
Serial data communications implies that individual bits of a character are
transmitted consecutively to a receiver that assembles the bits back into a
character. Data rate, error checking, handshaking, and character framing
(start/stop bits) are pre-defined and must correspond at both the transmitting
and receiving ends.
Asynchronous communications is the standard means of serial data
communication for PC compatibles and PS/2 computers. The original PC was
equipped with a communication or COM: port that was designed around an 8250
Universal Asynchronous Receiver Transmitter (UART). This device allows
asynchronous serial data to be transferred through a simple and straightforward
programming interface. A start bit, followed by a pre-defined number of data bits
(5, 6, 7, or 8) defines character boundaries for asynchronous communications.
The end of the character is defined by the transmission of a pre-defined number
of stop bits (usual 1, 1.5 or 2). An extra bit used for error detection is often
appended before the stop bits.
Idle state of
line
Odd, Even
or
Unused
Remain Idle or
next start bit
5 to 8 Data Bits
1
P
BIT
STOP
1
0
1.5
2
Figure 4 - Asynchronous Communications Bit Diagram
This special bit is called the parity bit. Parity is a simple method of determining if
a data bit has been lost or corrupted during transmission. There are several
methods for implementing a parity check to guard against data corruption.
Common methods are called (E)ven Parity or (O)dd Parity. Sometimes parity is
not used to detect errors on the data stream. This is refereed to as (N)o parity.
Because each bit in asynchronous communications is sent consecutively, it is
easy to generalize asynchronous communications by stating that each character
is wrapped (framed) by pre-defined bits to mark the beginning and end of the
serial transmission of the character. The data rate and communication parameters
for asynchronous communications have to be the same at both the transmitting
and receiving ends. The communication parameters are baud rate, parity,
number of data bits per character, and stop bits (i.e. 9600,N,8,1).
Omega Engineering COMM+232.PCI
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Appendix E - Silk-Screen
Appendix E - Silk-Screen
5.0"
4.2"
Omega Engineering COMM+232.PCI
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Warranty
Appendix F - Compliance Notices
Federal Communications Commission Statement
FCC - This equipment has been tested and found to comply with the limits for
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in such case the user will be required to correct the
interference at his own expense.
EMC Directive Statement
Products bearing the CE Label fulfill the requirements of
the EMC directive (89/336/EEC) and of the low-voltage
directive (73/23/EEC) issued by the European Commission.
To obey these directives, the following European
standards must be met:
•
•
•
EN55022 Class A - “Limits and methods of measurement of radio
interference characteristics of information technology equipment”
EN50082-1 - “Electromagnetic compatibility - Generic immunity
standard” Part 1 : Residential, commercial and light industry
EN60950 (IEC950)
-
“Safety of information technology
equipment, including electrical business equipment”
Warning
This is a Class A Product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.
Always use cabling provided with this product if possible. If no cable is
provided or if an alternate cable is required, use high quality shielded cabling to
maintain compliance with FCC/EMC directives.
Omega Engineering COMM+232.PCI
Page 16
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WARRANTY/DIS CLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in m aterials and workm anship for a
period of 13 m o n t h s from date of purchase. OMEGA’s WARRANTY adds an additional one (1) m onth
grace period to the norm al o n e (1 ) ye a r p ro d u c t w a rra n t y to cover handling and shipping tim e. This
ensures that OMEGA’s custom ers receive m axim um coverage on each product.
If the unit m alfunctions, it m ust be returned to the factory for evaluation. OMEGA’s Custom er Service
Departm ent will issue an Authorized Return (AR) num ber im m ediately upon phone or written request.
Upon exam ination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, includ-
in g b u t n o t lim ite d to m is h a n d lin g , im p ro p e r in te rfa cin g , o p e ra tio n o u ts id e o f d e s ig n lim its ,
im proper repair, or unauthorized m odification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, m oisture or vibration; im proper specification; m isapplication; m isuse or other operating
conditions outside of OMEGA’s control. Com ponents which wear are not warranted, including but not
lim ited to contact points, fuses, and triacs.
O M EG A is p le a s e d t o o ff e r s u g g e s t io n s o n t h e u s e o f it s va r io u s p ro d u c t s . Ho w e ve r,
OMEGA neither assum es responsibility for any om issions or errors nor assum es liability for any
dam ages that result from the use of its products in accordance w ith inform ation provided by
OMEGA, either verbal or w ritten. OMEGA w arrants only that the parts m anufactured by it w ill be
a s s p e c if ie d a n d f r e e o f d e f e c t s . O M EG A M A KES N O OTHER WA RRA N TIES O R
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE,
AND ALL IMP LIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITN ES S FO R A PA RTIC U LA R P U RP O S E A RE HEREBY D IS C LA IM ED. LIM ITATIO N O F
LIABILITY: The rem edies of purchaser set forth herein are exclusive, and the total liability of
OMEGA w it h re s p e c t t o t h is o rd e r, w h e t h e r b a s e d o n c o n t ra c t , w a rra n t y, n e g lig e n c e ,
in d e m n ific a t io n , s t ric t lia b ilit y o r o t h e rw is e , s h a ll n o t e xc e e d t h e p u rch a s e p ric e o f t h e
c o m p o n e n t u p o n w h ic h lia b ilit y is b a s e d . In n o e v e n t s h a ll O M EG A b e lia b le f o r
consequential, incidental or special dam ages.
CONDITIONS: Equipm ent sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Com ponent” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in m edical
applications or used on hum ans. Should any Product(s) be used in or with any nuclear installation or
activity, m edical application, used on hum ans, or m isused in any way, OMEGA assum es no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indem nify
OMEGA and hold OMEGA harm less from any liability or dam age whatsoever arising out of the use of the
Product(s) in such a m anner.
RETURN REQUESTS /INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Custom er Service Departm ent. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN
(AR) NUMBER FROM OMEGA’S CUS TOMER S ERVICE DEPARTMENT (IN ORDER TO AVOID
PROCESSING DELAYS). The assigned AR num ber should then be m arked on the outside of the return
package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.
FOR WARRANTY RETURNS, please have the
following inform ation available BEFORE
contacting OMEGA:
FOR NON-WARRANTY REPAIRS, consult OMEGA
for current repair charges. Have the following
inform ation available BEFORE contacting OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
1. Purchase Order num ber to cover the COST
of the repair,
2. Model and serial num ber of the product under
warranty, and
3. Repair instructions and/or specific problem s
relative to the product.
2. Model and serial num ber of the product, and
3. Repair instructions and/or specific problem s
relative to the product.
OMEGA’s policy is to m ake running changes, not m odel changes, whenever an im provem ent is possible. This affords
our custom ers the latest in technology and engineering.
OMEGA is a registered tradem ark of OMEGA ENGINEERING, INC.
© Copyright 2002 OMEGA ENGINEERING, INC. All rights reserved. This docum ent m ay not be copied, photocopied,
reproduced, translated, or reduced to any electronic m edium or m achine-readable form , in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.
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Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
TEMPERATURE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
PRESSURE, STRAIN AND FORCE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Transducers & Strain Gages
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories
FLOW/LEVEL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers
pH/CONDUCTIVITY
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment
DATA ACQUISITION
Ⅺ
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M3107/0303
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