SEALEVEL Ultra Comm+422.PCI 4 Channel PCI Bus Serial Input or Output Adapter User Manual

SEALEVEL Ultra Comm+422.PCI 4 Channel PCI Bus Serial Input or Output

Adapter

Safety Instructions

ESD Warnings
Electrostatic Discharges (ESD)
A sudden electrostatic discharge can destroy sensitive components. Proper packaging and earthing rules must therefore be observed. Always take the following precautions.

• Transport boards and cards in electrostatically secure containers or bags.
• Keep electrostatically sensitive components in their containers, until they arrive at an electrostatically protected workplace.
• Only touch electrostatically sensitive components when you are properly earthed.
• Store electrostatically sensitive components in protective packaging or on anti-static mats.

Grounding Methods
The following measures help to avoid electrostatic damages to the device:

• Cover workstations with approved antistatic material. Always wear a wrist strap connected to workplace as well as properly grounded tools and equipment.
• Use antistatic mats, heel straps, or air ionizers for more protection.
• Always handle electrostatically sensitive components by their edge or by their casing.
• Avoid contact with pins, leads, or circuitry.
• Turn off power and input signals before inserting and removing connectors or connecting test equipment.
• Keep work area free of non-conductive materials such as ordinary plastic assembly aids and Styrofoam.
• Use field service tools such as cutters, screwdrivers, and vacuum cleaners which are conductive.
• Always place drives and boards PCB-assembly-side down on the foam.

Introduction

The Sealevel ULTRA COMM+422.PCI is a four channel PCI Bus serial I/O adapter for the PC and compatibles supporting data rates up to 460.8K bps. RS-422 provides excellent communications for long distance device connections up to 4000ft., where noise immunity and high data integrity are essential. Select RS-485 and capture data from multiple peripherals in a RS­485 multi-drop network. In both RS-485 and RS-422 modes, the card works seamlessly with the standard operating system serial driver. In RS-485 mode, our special auto- enable feature allows the RS­485 ports to be viewed by the operating system as a COM: port. This allows the standard COM: driver to be utilized for RS­485 communications. Our on-board hardware automatically handles the RS-485 driver enable.

Features

• Compliant with RoHS and WEEE directives
• Each port individually configurable for RS-422 or RS-485
• 16C850 buffered UARTs with 128-byte FIFOs (previous releases had the 16C550 UART)
• Data rates to 460.8K bps
• Automatic RS-485 enable/disable
• 36″ cable terminates to four DB-9M connectors

Before You Get Started

What’s Included
The ULTRA COMM+422.PCI is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement.

• ULTRA COMM+422.PCI Serial I/O Adaptar
• Spider Cable providing 4 DB-9 connectors

Advisory Conventions

Warning
The highest level of importance used to stress a condition where damage could result to the product, or the user could suffer serious injury.
Important
The middle level of importance used to highlight information that might not seem obvious or a situation that could cause the product to fail.
Note
The lowest level of importance used to provide background information, additional tips, or other non-critical facts that will not affect the use of the product.

Optional Items
Depending upon your application, you are likely to find one or more of the following items useful with the ULTRA COMM+422.PCI. All items can be purchased from our website (www.sealevel.com) by calling our sales team at 864-843-4343.

Cables

DB9 Female to DB9 Male Extension Cable, 72 inch Length (Item# CA127)

The CA127 is a standard DB9F to DB9M serial extension cable. Extend a DB9 cable or locate a piece of hardware where it is needed with this six foot (72) cable. The connectors are pinned one-to-one, so the cable is compatible with any device or cable with DB9 connectors. The cable is fully shielded against interference and the connectors are molded to provide strain relief. Dual metal thumbscrews secure the cable connections and prevent accidental disconnection.|
DB9 Female (RS-422) to DB25 Male (RS-530) Cable, 10 inch Length (Item# CA176)

DB9 Female (RS-422) to DB25 Male (RS-530) Cable, 10 inch Length. Convert any Sealevel RS-422 DB9 Male Async Adapter to an RS-530 DB25 Male pinout. Useful in situations where RS- 530 cabling exists, and a multiport Sealevel RS-422 adapter is to be used.

|

Terminal Blocks

Terminal Block – Dual DB9 Female to 18 Screw Terminals (Item# TB06)

The TB06 terminal block includes dual right-angle DB-9 female connectors to 18 screw terminals (two groups of 9 screw terminals). Useful for breaking out serial and digital I/O signals and simplifies field wiring of RS-422 and RS-485 networks with different pin out configurations.

The TB06 is designed to connect directly to Sealevel dual-port DB9 serial cards or any cable with DB9M connectors and includes holes for board or panel mounting.

|
Terminal Block Kit – TB06 + (2) CA127 Cables (Item# KT106)

The TB06 terminal block has been designed to connect directly to any Sealevel dual DB9 serial board or to serial boards with DB9 cables. If you need to extend the length of your dual DB9 connection, the KT106 includes the TB06 terminal block and two CA127 DB9 extension cables.

|

Optional Items, Continued

 | Terminal Block – DB9 Female to 5 Screw Terminals (RS-422/485) (Item# TB34)
---|---
 | The TB34 terminal block adapter offers a simple solution for connecting RS-422 and RS-485 field wiring to a serial port. The terminal block is compatible with 2-wire and 4-wire RS-485 networks and matches the RS-422/485 pin-out on Sealevel serial devices with DB9 male connectors. A pair of thumbscrews secures the adapter to the serial port and prevents accidental disconnection. The TB34 is compact and allows multiple adapters to be used on multi-port serial devices, such as Sealevel USB serial adapters, Ethernet serial servers and other Sealevel serial devices with two or more ports.|

 | Terminal Block – DB9 Female to 9 Screw Terminals (Item# CA246)
 | The TB05 terminal block breaks out a DB9 connector to 9 screw terminals to simplify field wiring of serial connections. It is ideal for RS-422 and RS-485 networks, yet it will work with any DB9 serial connection, including RS-232. The TB05 includes holes for board or panel mounting. The TB05 is designed to connect directly to Sealevel DB9 serial cards or any cable with a DB9M connector.|
DB9 Female (RS-422) to DB9 Female (Opto 22 Optomux) Converter (Item# DB103)|

The DB103 is designed to convert a Sealevel DB9 male RS-422 connector to a DB9 female pinout compatible with AC24AT and AC422AT Opto 22 ISA bus cards. This allows Optomux devices to be controlled from any Sealevel RS-422 board with a DB9 male connector.

| |
Terminal Block Kit – TB05 + CA127 Cable (Item# KT105)|
The KT105 terminal block kit breaks out a DB9 connector to 9 screw terminals to simplify field wiring of serial connections. It is ideal for RS-422 and RS-485 networks, yet it will work with any DB9 serial connection, including RS-232. The KT105 includes one DB9 terminal block (Item# TB05) and one DB9M to DB9F 72 inch extension cable (Item# CA127). The TB05 includes holes for board or panel mounting. The TB05 is designed to connect directly to Sealevel DB9 serial cards or any cable with a DB9M connector.| |

Factory Default Settings

The ULTRA COMM+422.PCI factory default settings are as follows:

To install the ULTRA COMM+422.PCI using factory default settings, refer to Installation on page 9. For your reference, record installed ULTRA COMM+422.PCI settings below:

Card Setup

In all cases J1x is for port 1, J2x – port 2, J3x – port 3 and J4x – port 4.

RS-485 Enable Modes

RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri- state driver that will allow the electrical presence of the driver to be removed from the line. The driver is in a tri-state or high impedance condition when this occurs. Only one driver may be active at a time and the other driver(s) must be tri-stated. The output modem control signal Request To Send (RTS) is typically used to control the state of the driver. Some communication software packages refer to RS-485 as RTS enable or RTS block mode transfer.

One of the unique features of the ULTRA COMM+422.PCI is the ability to be RS-485 compatible without the need for special software or drivers. This ability is especially useful in Windows, Windows NT, and OS/2 environments where the lower level I/O control is abstracted from the application program. This ability means that the user can effectively use the ULTRA COMM+422.PCI in an RS-485 application with existing (i.e., standard RS-232) software drivers.

Headers J1B – J4B are used to control the RS-485 mode functions for the driver circuit. The selections are ‘RTS’ enable (silk-screen ‘RT’) or ‘Auto’ enable (silk-screen ‘AT’). The ‘Auto’ enable feature automatically enables/disables the RS-485 interface. The ‘RTS’ mode uses the ‘RTS’ modem control signal to enable the RS-485 interface and provides backward compatibility with existing software products.

Position 3 (silk-screen ‘NE’) of J1B – J4B is used to control the RS-485 enable/disable functions for the receiver circuit and determine the state of the RS-422/485 driver. The RS-485 ‘Echo’ is the result of connecting the receiver inputs to the transmitter outputs. Every time a character is transmitted; it is also received. This can be beneficial if the software can handle echoing (i.e., using received characters to throttle the transmitter) or it can confuse the system if the software does not. To select the ‘No Echo’ mode select silk-screen position ‘NE.’

For RS-422 compatibility remove the jumpers at J1B – J4B.

Examples on the following pages describe all of the valid settings for J1B – J4B.

Interface Mode Examples J1B – J4B

Figure 1- Headers J1B – J4B, RS-422 Figure 2 – Headers J1B – J4B, RS-485 ‘Auto’ Enabled, with ‘No Echo’ Figure 3 – Headers J1B – J4B, RS-485 ‘Auto’ Enabled, with ‘Echo’ Figure 4 – Headers J1B – J4B, RS-485 ‘RTS’ Enabled, with ‘No Echo’ Figure 5 – Headers J1B – J4B, RS-485 ‘RTS’ Enabled, with ‘Echo’

Address and IRQ Selection
The ULTRA COMM+422.PCI is automatically assigned I/O addresses and IRQs by your motherboard BIOS. Only the I/O addresses may be modified by the user. Adding or removing other hardware may change the assignment of I/O addresses and IRQs.

Line Termination
Typically, each end of the RS-485 bus must have line terminating resistors (RS-422 terminates the receive end only). A 120-ohm resistor is across each RS-422/485 input in addition to a 1K ohm pull-up/pull-down combination that biases the receiver inputs. Headers J1A – J4A allow the user to customize this interface to their specific requirements. Each jumper position corresponds to a specific portion of the interface. If multiple ULTRA COMM+422.PCI adapters are configured in an RS-485 network, only the boards on each end should have jumpers T, P & P ON. Refer to the following table for each position’s operation:

P

| Adds or removes the 1K ohm pull-down resistor in the RS- 422/RS-485 receiver circuit (Receive data only).

P

| Adds or removes the 1K ohm pull-up resistor in the RS-422/RS- 485 receiver circuit (Receive data only).
T| Adds or removes the 120 ohm termination.
L| Connects the TX+ to RX+ for RS-485 two wire operation.
L| Connects the TX- to RX- for RS-485 two wire operation.

Figure 6 – Headers J1A – J4A, Line Termination

Clock Modes

The ULTRA COMM+422.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).

Figure 7 – Clocking Mode ‘Divide By 4’

To double these rates up to a maximum rate for 230.4K bps place the jumper in the divide by 2 (silk-screen DIV2) position.

Figure 8 – Clocking Mode ‘Divide By 2’

Baud Rates and Divisors for the ‘Div1’ Mode
The following table shows some common data rates and the rates you should choose to match them if using the adapter in the ‘DIV1’ mode.

If your communications package allows the use of Baud rate divisors, choose the appropriate divisor from the following table:

Baud Rates and Divisors for the ‘Div2’ Mode
The following table shows some common data rates and the rates you should choose to match them if using the adapter in the ‘DIV2’ mode.

If your communications package allows the use of Baud rate divisors, choose the appropriate divisor from the following table:

Installation

Software Installation

Windows Installation

Do not install the Adapter in the machine until the software has been fully installed.
Only users running Windows 7 or newer should utilize these instructions for accessing and installing the appropriate driver via Sealevel’s website. If you are utilizing an operating system prior to Windows 7, please contact Sealevel by calling 864.843.4343 or emailing support@sealevel.com to receive access to the proper driver download and installation

instructions.

1. Begin by locating, selecting, and installing the correct software from the Sealevel software driver database.
2. Type in or select the part number (#7402) for the adapter from the listing.
3. Select “Download Now” for SeaCOM for Windows.
4. The setup files will automatically detect the operating environment and install the proper components. Follow the information presented on the screens that follow.
5. A screen may appear with text similar to: “The publisher cannot be determined due to the problems below: Authenticode signature not found.” Please click the ‘Yes’ button and proceed with the installation. This declaration simply means that the operating system is not aware of the driver being loaded. It will not cause any harm to your system.
6. During setup, the user may specify installation directories and other preferred configurations. This program also adds entries to the system registry that are necessary for specifying the operating parameters for each driver. An uninstall option is also included to remove all registry/INI file entries from the system.
7. The software is now installed, and you can proceed with the hardware installation.

Linux Installation

You MUST have “root” privileges to install the software and drivers.
The syntax is case sensitive.

SeaCOM for Linux can be downloaded here: https://www.sealevel.com/support /software-seacom-linux/. It includes the README and the Serial-HOWTO help files (located at seacom/dox/howto). This series of files both explains typical Linux serial implementations and informs the user about Linux syntax and preferred practices

User can use a program such as 7-Zip to extract the tar.gz file.

In addition, the software selectable interface settings can be accessed by referencing seacom/utilities/7402mode.
For additional software support, including QNX, please call Sealevel Systems’ Technical Support, 864-843-4343. Our technical support is free and available from 8:00 AM – 5:00 PM Eastern Time, Monday through Friday. For email support contact: support@sealevel.com.

Technical Description

The Sealevel Systems ULTRA COMM+422.PCI provides a PCI interface adapter with 4 RS-422/485 asynchronous serial ports for industrial automation and control applications.
The ULTRA COMM+422.PCI utilizes the 16850 UART. This UART includes 128 byte FIFOs, automatic hardware/software flow control and the ability to handle much higher data rates than the standard UARTs.

Interrupts
A good description of an interrupt and its 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 performed. 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 its own interrupt, frequently called an IRQ (short for Interrupt Request).

In the early days of PCs Sealevel 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 Sealevel Systems 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 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 through put abilities this method of servicing shared IRQs became inefficient.

Why use an ISP?
The answer to the polling inefficiency was 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 ULTRA COMM+422.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 ULTRA COMM+422.PCI are identical, so any one can be read.
Example: This indicates that Channel 2 has an interrupt pending.

Connector Pin Assignments

RS-422/485 (DB-9 Male)

DB-37 Connector Pin Assignments

Product Overview

Environmental Specifications

to 158º F)
Humidity Range| 10 to 90% R.H. Non-Condensing| 10 to 90% R.H. Non- Condensing

Manufacturing
All Sealevel Systems Printed Circuit boards are built to UL 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

Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)

Physical Dimensions

Appendix A – Troubleshooting

The adapter should provide years of trouble-free service. However, in the event that device appears to not be functioning incorrectly, the following tips can eliminate most common problems 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 Sealevel Systems 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 Sealevel Systems adapter is using a unique IRQ 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 Sealevel Systems adapter is securely installed in a motherboard slot.
5. If you are utilizing an operating system prior to Windows 7, please contact Sealevel by calling (864) 843- 4343 or emailing support@sealevel.com to receive more information in regard to the utility software which will determine if your product is functioning properly.
6. Only users running Windows 7 or newer should utilize the diagnostic tool ‘WinSSD’ installed in the SeaCOM 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.
7. Always use the Sealevel Systems diagnostic software when troubleshooting a problem. This will help eliminate any software issues and identify any hardware conflicts.

If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, 864-843-4343. Our technical support is free and available from 8:00 A.M.- 5:00 P.M. Eastern Time Monday through Friday. For email support contact support@sealevel.com.

Appendix B – Electrical Interface

RS-422
The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits. RS-422 is a differential interface that defines voltage levels and driver/receiver electrical specifications. On a differential interface, logic levels are defined by the difference in voltage between a pair of outputs or inputs. In contrast, a single ended interface, for example RS-232, defines the logic levels as the difference in voltage between a single signal and a common ground connection. Differential interfaces are typically more immune to noise or voltage spikes that may occur on the communication lines. Differential interfaces also have greater drive capabilities that allow for longer cable lengths. RS-422 is rated up to 10 Megabits per second and can have cabling 4000 feet long. RS-422 also defines driver and receiver electrical characteristics that will allow 1 driver and up to 32 receivers on the line at once. RS-422 signal levels range from 0 to +5 volts. RS-422 does not define a physical connector.

RS-485
RS-485 is backwardly compatible with RS-422; however, it is optimized for party-line or multi-drop applications. The output of the RS-422/485 driver is capable of being Active (enabled) or Tri-State (disabled). This capability allows multiple ports to be connected in a multi-drop bus and selectively polled. RS-485 allows cable lengths up to 4000 feet and data rates up to 10 Megabits per second. The signal levels for RS-485 are the same as those defined by RS-422. RS-485 has electrical characteristics that allow for 32 drivers and 32 receivers to be connected to one line. This interface is ideal for multi-drop or network environments. RS-485 tri-state driver (not dual- state) will allow the electrical presence of the driver to be removed from the line. Only one driver may be active at a time and the other driver(s) must be tri-stated. RS-485 can be cabled in two ways, two wire and four wire mode. Two wire mode does not allow for full duplex communication and requires that data be transferred in only one direction at a time. For half-duplex operation, the two transmit pins should be connected to the two receive pins (Tx+ to Rx+ and Tx- to Rx-). Four wire mode allows full duplex data transfers. RS-485 does not define a connector pin-out or a set of modem control signals. RS-485 does not define a physical connector.

Appendix C – 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 (usually 1, 1.5 or 2). An extra bit used for error detection is often appended before the stop bits. Figure 9 – Asynchronous Communications

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 referred 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).

Appendix D – CAD Drawing

Appendix E – How To Get Assistance

Please refer to Troubleshooting Guide prior to calling Technical Support.

1. Begin by reading through the Trouble Shooting Guide in Appendix A. If assistance is still needed please see below.
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.
3. Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many common questions. This section can be found at http://www.sealevel.com/faq.htm .
4. Sealevel Systems maintains a Home page on the Internet. Our home page address is https://www.sealevel.com/. The latest software updates, and newest manuals are available via our FTP site that can be accessed from our home page.

Technical support is available Monday to Friday from 8:00 A.M. to 5:00 P.M. Eastern Time. Technical support can be reached at 864-843-4343. For email support contact support@sealevel.com.
RETURN AUTHORIZATION MUST BE OBTAINED FROM SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL BE ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY CALLING SEALEVEL SYSTEMS AND REQUESTING A RETURN MERCHANDISE AUTHORIZATION (RMA) NUMBER.

Appendix F – Compliance Notices

Federal Communications Commission (FCC) Statement

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 the users 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”
• EN55024 – “Information technology equipment Immunity characteristics Limits and methods of measurement”.

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 to prevent or correct the interference.
• 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.

Warranty

Sealevel’s commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured I/O products. We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field. Sealevel products are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product development, production, burn- in and testing. Sealevel achieved ISO-9001:2015 certification in 2018.

Warranty Policy
Sealevel Systems, Inc. (hereafter “Sealevel”) warrants that the Product shall conform to and perform in accordance with published technical specifications and shall be free of defects in materials and workmanship for the warranty period. In the event of failure, Sealevel will repair or replace the product at Sealevel’s sole discretion. Failures resulting from misapplication or misuse of the Product, failure to adhere to any specifications or instructions, or failure resulting from neglect, abuse, accidents, or acts of nature are not covered under this warranty.
Warranty service may be obtained by delivering the Product to Sealevel and providing proof of purchase. Customer agrees to ensure the Product or assume the risk of loss or damage in transit, to prepay shipping charges to Sealevel, and to use the original shipping container or equivalent. Warranty is valid only for original purchaser and is not transferable.
This warranty applies to Sealevel manufactured Product. Product purchased through Sealevel but manufactured by a third party will retain the original manufacturer’s warranty.

Non-Warranty Repair/Retest
Products returned due to damage or misuse and Products retested with no problem found are subject to repair/retest charges. A purchase order or credit card number and authorization must be provided in order to obtain an RMA (Return Merchandise Authorization) number prior to returning Product.
How to obtain an RMA (Return Merchandise Authorization)
If you need to return a product for warranty or non-warranty repair, you must first obtain an RMA number. Please contact Sealevel Systems, Inc. Technical Support for assistance:

Available Monday – Friday, 8:00AM to 5:00PM EST
Phone 864-843-4343
Email support@sealevel.com

Trademarks

Sealevel Systems, Incorporated acknowledges that all trademarks referenced in this manual are the service mark, trademark, or registered trademark of the respective company

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