Tripp Lite USA-19HS, User Manual, Page: 18 / 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.
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