User manual

If a View administrator has congured the scanner redirection feature, and if you use the Blast Extreme
display protocol or the PCoIP display protocol, a scanner connected to your local system can be used in a
remote desktop or application.
I If you are using a scanner, do not connect it from the Connect USB Device menu in
Horizon Client. To do so routes the device through USB redirection, and the performance will be unusable.
When scanning data is redirected to a remote desktop or application, you cannot access the scanner on the
local computer. Conversely, when a scanner is in use on the local computer, you cannot access it on the
remote desktop or application.
Tips for Using the Scanner Redirection Feature
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Click the scanner icon ( ) in the system tray, or notication area, of the remote desktop to select a non-
default scanner or to change conguration seings. On RDS applications, the system tray icon is
redirected to the local client computer.
You do not have to use the menu that appears when you click this icon. Scanner redirection works
without any further conguration. The icon menu allows you to congure options such as changing
which device to use if more than one device is connected to the client computer.
N If the menu that appears does not list any scanners it means that an incompatible scanner is
connected to the client computer. If the scanner icon is not present, it means that the scanner redirection
feature is disabled or not installed on the remote desktop. Also, this icon does not appear on Mac or
Linux client systems because the feature is not supported on those systems.
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Click the Preferences option in the menu to select options to control image compression, hide webcams
from the scanner redirection menu, and determine how to select the default scanner.
You can select the option to hide webcams if you plan to use the Real-Time Audio-Video feature to
redirect webcams, which is what VMware recommends. Use scanner redirection with webcams to take
a photograph of yourself and scan it.
N If you congure scanner redirection to use a specic scanner and that scanner is not available,
scanner redirection will not work.
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Although most TWAIN scanners display the a scanner seings dialog box by default, some do not. For
those that do not display seings options, you can use the Preferences option in the scanner icon menu,
and select Always show Scanner  dialog option.
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Scanning too large an image or scanning at too high a resolution might not work. In this case, you
might see the scanning progress indicator freeze, or the scanner application might exit unexpectedly. If
you minimize the View desktop, an error message might appear on your client system, notifying you
that the resolution is set too high. To resolve this issue, reduce the resolution or crop the image to a
smaller size and scan again.
Using Serial Port Redirection
With this feature, users can redirect locally connected, serial (COM) ports such as built-in RS232 ports or
USB-to-serial adapters. Devices such as printers, bar code readers, and other serial devices can be connected
to these ports and used in the remote desktops.
If a View administrator has congured the serial port redirection feature, and if you use the VMware Blast
Extreme or the PCoIP display protocol, serial port redirection works on your remote desktop without
further conguration. For example, COM1 on the local client system is redirected as COM1 on the remote
desktop. COM2 is redirected as COM2, unless the COM port is already in use. If so the COM port is mapped
to avoid conicts. For example, if COM1 and COM2 already exist on the remote desktop, COM1 on the
client is mapped to COM3 by default.
Chapter 5 Working in a Remote Desktop or Application
VMware, Inc. 93