Tripp Lite USA-19HS User manual

...................................................Introduction 2
Overview
Specs
Package Contents
Requirements
............Software and Hardware Installation 3
Installation Overview
Install Keyspan Software
Setup and Connect the Keyspan Hardware
Determine Keyspan's COM Port Assignment
....................Using The Keyspan Serial Port 5
Overview Of Using Serial Devices with Serial Ports
Connecting and Configuring A Serial Device To Use A
Keyspan Adapter
..............Changing Your COM Port Address 9
How does the Keyspan adapter determine its COM
port number?
Change COM Port via Keyspan Serial Assistant
Change COM Port via the Windows Device Manager
..........................................Troubleshooting 14
..............Uninstalling USA-19HS Software 16
How To Remove the USA-19HS Software
...........................Keyspan Serial Assistant 17
Launching the Keyspan Serial Assistant
Explanation of Assistant Features
Adapter Status tab
Properties tab
- Endpoints and Serial Port Options
- Serial Test Options
Port Mapping tab
Diagnostics tab
Help Tab
.............................TX Ack Advance Details 23
USA-19H Tx Ack Advance Overview
The Problem
The Work Around
Notes about the Work Around
What Should I Use?
......Driver Events / Data Monitor Features 25
Overview
Using The Driver Events Feature
Using The Data Monitor Feature
..........................Serial Port Pin Outs [DB9] 28
USA-19HS Pin Outs
External Loopback Connector Information
...Specs - High Speed USB Serial Adapter 29
Specs
Package Contents
Requirements
.....Warranty Information [Two (2) year(s)] 30
Definitions
Limited Warranty on Hardware:
How To Obtain Warranty Service/Repair
..................................Notices FCC, CE, etc 31
United States FCC
CE MARK DECLARATION OF CONFORMITY
Canada Digital Apparatus EMI Standard
VCCI (Japan)
Australia/New Zealand
Copyright
Trademarks
USA-19HS - User Manual Page 1 of 30
USB Serial Adapter Software
for Windows 2000/XP/2003 Server/Vista
USER MANUAL
Model: USA-19HS
(Software V 3.7S)
Warranty
Registration:
register online today for a
chance to win a FREE Tripp Lite
product—www.tripplite.com/warranty

Introduction
Overview
Keyspan's USB to Serial Adapter technology allows you to connect serial devices to computers that
lack serial ports.
Keyspan's drivers and firmware provide software addresses (COM ports on Windows and Serial Ports on
Mac) for your devices to access.
Our USA-19HS is broadly recommended by serial device manufacturers due to its dependability and
"Best in Class" compatibility. The adapter is compatible with all RS-232 serial devices including mo-
dems, GPS devices, cell phones, hand held scanners, networking equipment (console port), graphics
tablets, point of sale devices, touch screens, UPS devices, medical and scientific instruments, indus-
trial process control devices, building automation instrumentation and other serial devices.
Features include:
• Certified: Microsoft WHQL approved
• High Speed: Supports 230 Kbps - twice the speed of a built in serial port
• Detachable Cable: Use adapter with any USB cable (up to 5 meters long)
• LED: Shows adapter status and data activity
• Plug & Play: Appears as standard COM port
• Mobile: Easy to carry - weighs just 2 oz.
• Bus Powered: No external power adapter required
• Analytic Tools: Includes Windows line monitor and data trace software
• Field Upgrade: Easy to update over time with free software downloads
• Easy Expansion: Supports use of multiple adapters on one PC
Specs
• Connects to USB port on PC or Mac
• Provides one male DB-9 RS-232 port for direct connection to serial device
• Supports data rates up to 230 Kbps
Package Contents
• USA-19HS USB to serial Adapter
• USB Cable
‣A to B cable (3 foot)
• CDROM (includes software and electronic user manual)
Requirements
• an available USB port
•Mac OS: 8.6 - 9.2.2
• Mac OS X: 10.2.8, 10.3.x, 10.4.x, 10.5.x
• Windows: 98, 98SE, Me, 2000, XP (32bit and 64bit), Windows Server 2003 x86, Vista (32bit and 64bit)
USA-19HS - User Manual!Page 2 of 30

Software and Hardware Installation
Installation Overview
Installation is 3 part process where you will 1) install the Keyspan software, 2) connect your adapter,
and 3) determine your adapter's COM port assignment. This last step is important because this is
COM port that you will tell your serial device to use. Please follow the instructions below to com-
plete this process
Install Keyspan Software
Important Notes:
DISCONNECT your Keyspan adapter BEFORE install the Keyspan software.
1. Install the Keyspan Software:
CDROM Installation:
Windows will automatically open the Keyspan CD Browser window (Note: you can manually start
the CD browser by locating and running the "Launch.exe" program on the CD-ROM). Using the on-
screen menus, locate the Keyspan Installer selection and click it to start the installation process.
Follow the instructions on-screen.
Installation via download:
Download the Keyspan driver from Keyspan's website (http://www.keyspan.com). Find and
download the Keyspan USA-19HS installer. When you have downloaded the installer, run installer.
WINDOWS Vista Tech Note:
During and/or after the software installation, Windows may report ''Windows can't verify the pub-
lisher of this software'', click the ''Install this driver software anyway'' selection.
2. Follow the installer's onscreen instructions to finish the software installation. When the installer
completes, proceed to the Step 3 (Setup Hardware).
Setup and Connect the Keyspan Hardware
3. Connect one end of the USB cable to the USB port on the back of the Keyspan adapter. Connect the
other end of the USB cable to the USB port on your computer. When you connect the adapter,
Windows will detect your Keyspan adapter. During this time, you may see Windows messages ap-
pear and disappear showing the names of different components of the Keyspan adapter. This is
normal during the the first installation of your adapter.
WINDOWS Tech Note:
During and/or after the hardware installation, the Windows New Hardware Wizard may ask you to
install software several times. Select ‘Install the software automatically’. You may also get an
additional prompt regarding logo testing, click ‘Continue Anyway' if it appears. Note that you
may get this message several times. Continue through all the Hardware Wizards that appear un-
til they stop appearing (you may see up to 3 Hardware Wizards).
4. When Windows has finished the installation of drivers for your adapter, proceed to the Step 5 (De-
termine Keyspan's COM Port Assignment).
USA-19HS - User Manual Page 3 of 30

Determine Keyspan's COM Port Assignment
5. We now need to determine which COM port was assigned to the Keyspan adapter. The adapter's
COM port is important because you will be telling your serial devices (ie modem, PDAs, GPS, etc)
to use the Keyspan COM port. You can determine Keyspan's COM port assignment by using the
Keyspan Serial Assistant utility. Open Keyspan Serial Assistant utility (START menu > (All) Pro-
grams > Keyspan > Keyspan Serial Assistant). You will be presented with the following window:
Keyspan Serial Assistant window
6. In the Keyspan Serial Assistant window, you will see your adapter's COM port assignment. You
should see COMxxx : IDLE or COMxxx: BUSY.
Note the COM port address (ie COM1, COM2, etc) as you will need this information later.
IDLE message:
If you see the IDLE status message, the Keyspan adapter is working and waiting for some pro-
gram to access the Keyspan COM port. This is the normal state of the adapter. If you look at
your adapter's status light, it will be blinking slowly (1 blink per sec.) to indicate that it is idle.
Proceed to the Making Your Keyspan Adapter Work With Your Serial Device section.
BUSY message:
If you see the BUSY status message, the Keyspan adapter is working and some program has al-
ready gained access the Keyspan COM port. If you look at your adapter's status light, it will be on
(not blinking) or blinking every time data is sent or received (this can be a rapid blink or a blink
every couple of seconds). Assuming that your serial device's software gained accessed to the
Keyspan adapter, you should be able to start using your serial device right away. In some cases,
it may be another program that is accessing the COM port before your serial device has had a
chance to get to the COM port. In these cases, please read the Troubleshooting section in this
manual for further assistance.
No Keyspan Adapters Detected message:
If you see the No Keyspan Adapters Detected status message, there is a problem with the instal-
lation. Please read the Troubleshooting section in this manual for further assistance.
If you see either the IDLE or BUSY message, proceed to the Using Your Keyspan Serial Port section
later in this manual.
USA-19HS - User Manual!Page 4 of 30

Using The Keyspan Serial Port
Overview Of Using Serial Devices with Serial Ports
Using a serial device with any serial port requires:
• [hardware] serial device (ie a modem, glucose meter, GPS, etc).
•[software] software that sends/receives data from your serial device (ie your GPS software).
• [hardware] a serial port (provided by your Keyspan adapter).
• [software] a COM port provided by the Keyspan software.
• [setup] your serial device's software needs to be told to use the Keyspan COM port.
This chapter will show you how to use the Keyspan adapter hardware and software. It will also pro-
vide an overview of how to setup your serial device.
Note:
Please note that this chapter assumes that you have completed the steps outlined in the Software
and Hardware Installation section earlier in this manual.
Connecting and Configuring A Serial Device To Use A Keyspan Adapter
The basic outline to connecting and configuring your serial device to use the Keyspan are:
1. Connect your Keyspan adapter to your computer's USB port.
2. Connect your serial device to the Keyspan adapter.
3. Determine the Keyspan COM port via the Keyspan Serial Assistant
4. Open your serial device's software and tell that software to use the Keyspan COM port
5. Tell you serial device's software to 'communicate' with the serial device (ie start using the serial
device like you would normally.
For example, if your Keyspan adapter is assigned to COM6, you need to tell your serial device's soft-
ware to use COM6. The serial device's software is the program that you run to send/receive data
from your serial device. This is where you need tell that program to use the Keyspan COM port.
Please refer to your software's instruction manual for information on how to select a COM port.
Important Note:
If you find your program's COM port selection screen and find that it does not allow you to select the
Keyspan COM port because its port selection screen is limited (ie your software only shows COM1
through COM4 but your adapter is on COM8), you will need to change the Keyspan COM port address.
Please read the Changing Your COM Port Address section later in this manual.
Once you have installed the Keyspan software and connected the Keyspan adapter [hardware] to your
computer, you are ready to connect your serial device hardware to the Keyspan adapter's DB9 port.
1. Connect your serial device's cable to the Keyspan adapter's DB9 port.
USA-19HS - User Manual!Page 5 of 30

DB9 port on USA-19HS
Note:
If your serial device has a different connector, you may need a converter cable or adapter to connect
your device to a DB9 port. Please contact the manufacturer of your serial device for details.
Now that you have physically connected your serial device to the Keyspan adapter, we need to con-
nect your serial device's software to the Keyspan COM port (software). Before we can do this, we
need to determine the Keyspan COM port. If you already know the Keyspan COM port, skip Step 2.
2. Open Keyspan Serial Assistant utility (START menu > (All) Programs > Keyspan > Keyspan Serial As-
sistant). You will be presented with the following window:
Keyspan Serial Assistant window
Alternate Method:
You can also use the DEVICE MANAGER in Windows to determine the Keyspan COM port. COM ports
are shown in the Device Manager under the PORTS (COM & LPT) section.
Write down the COM port shown in the ADAPTER STATUS tab. We will need this in the next step. You
can close the Keyspan Serial Assistant when you have noted your COM port.
Note:
COM ports are assigned on the basis of what COM ports (software addresses) are available on your
computer. Because of this, your adapter may be assigned to COM3 on one computer and the same
adapter will be assigned to COM9 on another computer.
COM port addresses can be reserved by software. Microsoft typically reserves COM1 and COM2 on
most Windows 2000, XP, and Vista computers. Devices such as internal modems, Bluetooth devices,
and other USB to serial adapters will also reserve COM ports. This topic is discussed in more detail in
the Changing Your COM Port Address section later in this manual.
USA-19HS - User Manual!Page 6 of 30

3. Open your serial device's software. This is the software that you would normally use to communi-
cate with your serial device. We need to tell this software to use the Keyspan COM port (from
Step 2). Normally, this is found in a COM port selection screen, menu, etc. Please see your serial
device's manual for instructions on how to select a serial port. Once you find this screen, pro-
ceed to the next step.
Note:
Every serial device COM port selection screen is different. Some serial device's have COM port selec-
tions in a control panel, some have their COM port selection screens in menu's called Settings, Com-
munication, Preferences, etc, and others may not have a place to select a serial port.
4. In your serial device's COM port selection screen, select the Keyspan COM port (the one that you
noted in Step 2).
Note:
If your software shows a limited number of ports and your Keyspan COM port is not in that range, you
will need to either get updated software that can see all COM ports or you will need to change the
Keyspan COM port to one that your program can use.
If you need to change your Keyspan COM port, see the Changing Your COM Port Address section later
in this manual. When you have completed that section, return to this section
5. Now that you have selected the Keyspan COM port, start using your serial device like you would
normally.
If your serial device is working, congratulations.
If your serial device doesn't work, please read the Troubleshooting section in this manual for fur-
ther assistance.
The Keyspan Adapter's Status Light
The Keyspan USA-19HS comes equipped with a green status light. This light reports the status of your
Keyspan adapter. It is useful in troubleshooting various issues.
The following table shows all of the possible states of the status light and what they mean:
Color
State
Description
n/a
Off
The Keyspan adapter is not con-
nected or not receiving power
from your computer.
The Keyspan hardware may not
have been installed correct. See
the troubleshooting section for
details.
USA-19HS - User Manual!Page 7 of 30

Color
State
Description
Green
On - Blinking Slowing
(1 blink per second)
The Keyspan adapter is IDLE and
waiting for your serial device's
software to access the Keyspan
COM port. This is normal state.
Green
On - Steady Light
(Not Blinking)
The Keyspan adapter is BUSY / 'In
Use'. The adapter is being ac-
cessed by some serial device's
software.
Green
On - Blinking Fast or 'Randomly'
The Keyspan serial port is sending
and/or receiving data
USA-19HS - User Manual!Page 8 of 30

Changing Your COM Port Address
Overview
In some cases, you will find that your serial device's software does not look for all COM ports on your
system. For example, some programs will only look for COM1 through COM4. If your Keyspan COM
port is above your software's range, your software will not be able to see your serial device. In this
case, you have two options:
• upgrade your software to a version that can see all COM ports (recommended)
•change the Keyspan COM port address.
Keyspan recommends that you at least try to get the latest version of your serial device's software
before attempting to change the Keyspan COM port since most developers have upgraded their soft-
ware to be compliant with latest Windows serial communication APIs.
If you cannot get newer software for your serial device, your only option is to change the Keyspan
COM port. This guide will show you how to change the Keyspan COM port via the Keyspan Serial Assis-
tant as well provide some details about COM ports in general.
How does the Keyspan adapter determine its COM port number?
Keyspan serial adapters create COM ports in the Windows registry just like the COM ports found on
older computers.
When you first connect a Keyspan adapter, the Keyspan adapter software reads the Windows registry
to find an 'available' COM port number.
If COM1 is not available it tries COM2, COM3, etc., until it finds a COM port number that is available.
If your Keyspan adapter creates COM4, then COM1 though COM3 are 'busy' or have been 'reserved' for
some piece of hardware or software (ie an internal modem, wireless connectivity, etc).
In modern computers (ie post Windows 2000), Microsoft reserves COM1 and COM2. Other things that
reserve COM ports are things like internal modems, internal/external Bluetooth (which usually re-
sever eight COM ports), and other USB to serial adapters.
Notes:
Since every computer is different, you may find that your Keyspan adapter is COM3 on one computer
and COM10 on another computer. To determine your Keyspan adapter's COM port assignment, please
use the Keyspan Serial Assistant.
Change COM Port via Keyspan Serial Assistant
Note: This is an advanced feature that requires you to have Administrator privileges on your sys-
tem.
1. Open Keyspan Serial Assistant utility (START menu > (All) Programs > Keyspan > Keyspan Serial As-
sistant). You will be presented with the following window:
USA-19HS - User Manual!Page 9 of 30

Keyspan Serial Assistant window
This will show your Keyspan adapter and the current COM port number (ie COM4, COM 5, etc.).
2. Click 'Port Mapping' tab. Once you are in the 'Port Mapping' section select or highlight the Keyspan
COM port that you wish to change.
Port Mapping tab with Keyspan Port highlighted
With your Keyspan COM port highlighted, select the new COM port number from the 'COM Port map-
ping for the selected adapter port' pull down menu.
COM Port Mapping pull down menu
USA-19HS - User Manual!Page 10 of 30

Once you have selected the new COM port number, the Keyspan software will ask you if you are sure
you want to proceed.
IMPORTANT:
Please note that you can select any COM port you wish however, you may notice that certain ports
are 'in use'. This may mean that there is hardware connected to these COM ports or they have been
reserved for the operating system or other software. Changing the COM port mapping to a COM port
that is 'in use' may render any hardware and/or software using that port inoperable.
3. Your COM port has now been changed to the new COM port number. To confirm the change, click
the Keyspan Serial Assistant's Adapter Status tab to see the new COM port. The COM port change
is complete.
Change COM Port via the Windows Device Manager
On Windows XP and Vista, you can change your Keyspan adapter's COM port number via the Device
Manager. This requires the latest version of the Keyspan software (version 3.7 or later).
This process accomplishes the same task as changing the COM port via the Keyspan Serial Assistant
however certain users may prefer to use the Device Manager to change ports.
Note: This is an advanced feature that requires you to have Administrator privileges on your sys-
tem.
1. Open Device Manager by double-clicking the System control panel. Next, click the Hardware tab
and then click the Device Manager button. This will open the Device Manager.
Device Manager window
Note: This is an advanced feature that requires you to have Administrator privileges on your sys-
tem.
USA-19HS - User Manual!Page 11 of 30

2. In the Device Manager, go to the Ports (COM & LPT) heading and click the on the plus (+) sign to
expand the heading. Find the Keyspan COM port in the list and right-click on the Keyspan USB Se-
rial Port item. Next select Properties.
Opening the Keyspan USB Serial Port Properties
This will open the Properties window:
the Properties window
3. In the Properties window, click the Port Settings tab and then click the Advanced... button as
shown below:
the Port Settings tab and Advanced... button
USA-19HS - User Manual!Page 12 of 30

This will open the Advanced Settings window:
the Advanced Settings window
4. In the Advanced Settings window, select the new COM port from your the COM Port Number pull
down menu.
the Advanced Settings window
Once you have selected the new COM port number, the Keyspan software will ask you if you are sure
you want to proceed.
IMPORTANT:
Please note that you can select any COM port you wish however, you may notice that certain ports
are 'in use'. This may mean that there is hardware connected to these COM ports or they have been
reserved for the operating system or other software. Changing the COM port mapping to a COM port
that is 'in use' may render any hardware and/or software using that port inoperable.
5. Your COM port has now been changed to the new COM port number. To confirm the change, return
to the Device Manager and locate the new COM port under the Ports (COM & LPT) heading.
USA-19HS - User Manual!Page 13 of 30

Troubleshooting
This troubleshooting guide will guide you in solving problems with the Keyspan USA-19HS hardware
and software installation.
Before you begin, make sure that you have:
• installed the latest USA-19HS software (available from our website)
• your USA-19HS adapter is connected to your USB port
Note:
If you are downloading software from Keyspan's website, make sure you download the USA-19HS driv-
ers. Keyspan has drivers for other adapters such as the USA-19, USA-19Qi, USA-19QW, etc. These
drivers are not compatible with the USA-19HS.
1. Open Keyspan Serial Assistant utility (START menu > (All) Programs > Keyspan > Keyspan Serial As-
sistant). You will be presented with a window that looks like the following:
Keyspan Serial Assistant window
<Option 1>
The Keyspan Serial Assistant will show your adapter's COM port and status (ie COMxx:Idle or COMxx
busy).
The IDLE message means that your serial device's software is not currently accessing the Keyspan
port).
The BUSY message means that a program (software) has accessed the Keyspan COM port. In most
cases, this means that you are ready to start using your serial device via the Keyspan adapter.
If your COM port appears, the Keyspan software and hardware is installed correctly. You do not need
to read the rest of this troubleshooting guide.
'
<Option 2>
If the message 'NO KEYSPAN USB SERIAL ADAPTERS FOUND' appears, proceed to Step 2.
2. Look at your Keyspan adapter hardware. On the front of the adapter, it will have the work
Keyspan printed on it. On the back of the adapter, find the printed p/n number (located under
USA-19HS - User Manual!Page 14 of 30

the FCC and CE symbols).
<Option 1>
If your printed p/n number DOES NOT show USA-19HS, you do not have a USA-19HS. Refer to the
correct documentation for your adapter.
<Option 2>
If your printed p/n number shows USA-19HS, proceed to Step 3.
3. Open the Device Manager:
On Windows 2000, XP, or Vista:
Open Device Manager by double-clicking the System control panel. Next, click the Hardware tab
and then click the Device Manager button. This will open the Device Manager.
On Windows 98, 98SE, or Me:
Open Device Manager by double-clicking the System control panel. Next, click the Device Man-
ager tab.
4. In the Device Manager, we are looking for any Keyspan related item that has a question mark (?),
exclamation mark (!), or red 'X'. You do not need to open every heading. Items with ?, !, and X
will appear on their own.
<Option 1>
Nothing shows up for Keyspan adapter in Device Manager (i.e. no “Other Device” or “TUSB 3410
Boot Device”). In this case, please change another USB cable and connect your Keyspan adapter to
another USB port in your computer.
<Option 2>
Keyspan adapter appears in Device Manager as “TUSB 3410 Boot Device”. This indicates that you
have a defective Keyspan USB Serial Adapter. Stop here and contact Tripp Lite tech support for fur-
ther assistance.
<Option 3>
Check the 'Other Devices' heading (you can expand this by clicking on the plus (+) sign next to the
heading) and see if there any items with a question mark (?) or an exclamation point (!). If you
have any items like this, right-click on each one and select the 'remove' or 'uninstall' command
from the right click menu.
Once you have removed all items with a question mark or an exclamation point in Device Manager,
disconnect your Keyspan adapter and restart your computer.
Login as Administrator and disable any anti-virus software when you get back to the desktop. Re-
connect the adapter to a built-in USB port and open Keyspan Serial Assistant. Your Keyspan com
port should now show up under the 'Adapter Status' tab. Your Keyspan USB Serial adapter now is
ready to use.
USA-19HS - User Manual!Page 15 of 30

Uninstalling USA-19HS Software
How To Remove the USA-19HS Software
Uninstalling the Keyspan USA-19HS software is an easy process in Windows. This process completely
uninstalls all Keyspan software files and entries in your Windows registry. The following process
walks you through the process of uninstalling the Keyspan software.
1. Disconnect the Keyspan USA-19HS Adapter from your USB port.
2. Close any Keyspan program windows (ie the Keyspan Serial Assistant)
IMPORTANT:
Make sure you complete steps 1 and 2. Uninstall will fail if you skip these steps.
3. For 98, Me, 2000, and XP, open the Add/Remove Programs control panel.
For Vista, open the Programs And Features control panel.
4. In the control panel, locate the Keyspan USA-19HS software. Then click the Uninstall/Change but-
ton to begin the uninstall program. Follow the instructions on-screen to complete the uninstall
process.
Note:
You may get an additional dialog asking you if you want to Repair, Modify, or Remove the software.
Select Remove and then click the Next button if you see this dialog appear.
USA-19HS - User Manual!Page 16 of 30

Keyspan Serial Assistant
Besides the required drivers, the Keyspan USB Serial Adapter software installer installs an application
called Keyspan Serial Assistant. This application is used to:
- Determine the status of the adapter software and hardware
- Assist in problem solving
Launching the Keyspan Serial Assistant
Open Keyspan Serial Assistant utility (START menu > (All) Programs > Keyspan > Keyspan Serial Assis-
tant). You will be presented with a window that looks like the following:
Keyspan Serial Assistant window
If your Keyspan hardware and software are installed correctly, you will see your adapter in the
'Adapter Status' tab box. You should also see the COM port number (ie COM1, COM2, etc.) and the
COM Port Status (IDLE or BUSY).
Note:
If you see your COM port number and its COM port Status. If you do not see either of these items,
proceed Troubleshooting section in this manual.
Explanation of Assistant Features
The following is a description of all the relevant text boxes and menus found in the Keyspan Serial
Assistant. You can also obtain this information by turning on the 'Enable Tool Tips' check box in the
Assistant's Help tab.
Adapter Status tab
The Adapter Status tab in the Keyspan Serial Assistant displays the status of your Keyspan adapter.
Specifically, it shows the COM port number (ie COM1, COM2, etc.) and the COM Port Status.(IDLE or
BUSY). If you have several Keyspan adapters of the same type, they will all show up in this tab.
Adapter Status tab
USA-19HS - User Manual !Page 17 of 30

This is also the first place to check to see if your Keyspan adapter is working properly. If your
Keyspan adapter does not show up in the Adapter Status tab, please proceed Troubleshooting section
in this manual for further instructions.
Properties tab
The Properties tab in the Keyspan Serial Assistant allows has two functions:
• test your Keyspan adapter (via Serial Test Options)
• make changes to the behavior of the Keyspan adapter (Endpoints and Serial Port Options)
Properties tab
Endpoints
Serial Port
Options Serial Test
Options
Adapter pull down menu
The Adapter pull down menu is used to select which USB Serial Adapter you would like to configure.
If you only have one Keyspan USB Serial Adapter, you will not need to change the selection.
- Endpoints and Serial Port Options
The Endpoints radio buttons are used to configure how the Keyspan adapter will communicate
with the USB subsystem (software)on your computer. Most users will not need to modify the de-
fault setting (Compatible (Interrupt)). You should only change this setting if you are sure that your
serial device needs a specific setting. The default setting is Compatible (Interrupt).
Port pull down menu
If you have more than one serial port on your Keyspan adapter, the Port pull down menu allows you
select which serial port you want to modify or test. You can also see the serial port's COM port
number and its COM port status next to the Port pull down menu. If you only have one serial port
on your Keyspan USB Serial Adapter, you will not need to change the selection.
Transmit Completion Timing Advance pull down menu
The Transmit Completion Timing Advance pull down menu allows you to adjust a device's transmit
behavior to achieve the optimum compromise between compatibility (exact emulation of built-in
ports) and improved throughput. The default setting is 'Standard'. Before changing this setting,
read the TX Ack Advance Details section in this manual. This section gives you detailed informa-
tion as to what this feature does and how it affects serial communication. This setting is set per
port (ie if you have a multi port Keyspan adapter, you can set one port to have one setting and an-
other port to use a different setting). Once you make this change, click the Update Configuration
button to upload the new settings to your adapter.
USA-19HS - User Manual!Page 18 of 30

Receive FIFO Buffer Size pull down menu
The Receive FIFO Buffer Size pull down menu allows you to configure the number of characters
which are stored in the card's "First In First Out" input buffer ("FIFO") before they are made avail-
able to the computer. The default value of this parameter is "16". The Receive FIFO improves the
reliability of data transfer at high speeds. You can turn this option OFF for performance reasons
however this is not necessary in most cases. If you are receiving data from your serial device at
speeds of 9600 baud or lower, you may want to set the Receive FIFO Buffer Size to None. This
setting is set per port (ie if you have a multi port Keyspan adapter, you can set one port to have
one setting and another port to use a different setting). Once you make this change, click the Up-
date Configuration button to upload the new settings to your adapter.
Update Configuration button
The Update Configuration button updates the Keyspan adapter with the changes you have made in
the Properties tab. Please note that these changes will take effect when you click the Update
Configuration button.
- Serial Test Options
The Test This Port button tests the COM port selected in the Port pull down menu (in the Serial Port
Option section in the Properties tab). The test that is performed is the selected test in the Test Op-
tion box.
Note:
The baud rate shown here is only used to configure the Serial Test. If your serial device's software
does not provide the necessary port settings to our adapter and you need to specify the default port
settings (ie baud [bits per second], data bits, parity, stop bits, and flow control), you set these set-
tings in the Device Manager (right-click your Keyspan COM port in the Ports (COM & LPT) heading and
then select Properties and then click the Port Settings tab).
Test This Port button
The Test This Port button tests the COM port selected in the Port pull down menu (in the Serial Port
Option section in the Properties tab). The test that is performed is the selected test in the Test
Option box.
Test Mode box
The Test Mode box allows to specify the type of test that will be performed when you press the
Test This Port button. There are 3 types of tests:
TX Only:
Use this test to test only the transmit (Tx) signals of the Keyspan adapter.
Ext. LoopBack:
Use this test sending and receiving data. This test sends data out the selected serial port and
waits to receive it via a special Loopback connector. You can find more information about this
special Loopback connector in the Serial Port Pin Outs section in this manual. IMPORTANT!
This test will fail if you did not make and connect a custom Loopback connector.
Int. Loop Back:
Use this test sending and receiving data. This test is performed within the Keyspan adapter
hardware. This test DOES NOT require a special Loopback cable.
Test Type box
The Test Type box allows to specify how many times the selected test will be repeated when you
press the Test button. Use the Quick option to perform the test once. To perform a subsequent
test, press the Test This Port button. Use the Continuous option to repeat the test continuously. To
USA-19HS - User Manual!Page 19 of 30

stop the test, press the Stop Test button (the Test This Port button becomes the Stop Test button
during a test).
Test Speed pull down menu
The Test Speed pull down menu allows to specify the speed (baud rate) at which the port will be
tested at when you press the Test This Port button button.
Test Status box
The Test Status box reports the test status or results of the selected COM port.
Port Mapping tab
The Port Mapping tab in the Keyspan Serial Assistant allows you to change how COM port numbers are
assigned to your Keyspan adapter. The following is an explanation of the items in this tab.
Important!!! Changing COM port assignments may render other hardware unusable. For step by step
instructions on how to change a COM port address, read the Changing Your COM Port Address section
earlier in this manual. Please make sure you read the sections about changing COM ports carefully.
Port Mapping tab
COM Port list box
The COM Port list box shows any connected Keyspan USB Serial Adapter, its COM port number and
COM port status. You can also see any other COM port that have been assigned or reserved on your
computer if you enable or check the Show All COM Assignment check box.
Show All COM Assignments check box
Enable or check the Show All COM Assignments check box to display ALL of the COM port name and
numbers that have been registered on your computer. This will include COM ports for other devices.
Note: You may have COM ports assigned or 'set aside' for hardware that may not be installed on your
computer depending on how your computer was setup by its manufacturer.
USA-19HS - User Manual!Page 20 of 30