Optimizing the video picture, Using the asmi module with low bandwidth – Raritan Computer Raritan ASMI G4 User Manual

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Chapter 5. ASMI Module Usage

the Section called Remote Console Control Bar

.

Optimizing the Video Picture

The ASMI module detects the video mode with 8 bits (256 colors) automatically. To improve the picture
quality you may select 16 bit (True Color) from the Options Menu of the Remote Console, sub menu
"Encoding", entry "Color Depth" (see

the Section called Encoding

for details).

Currently, the video picture with the best quality can be achieved with the settings "16 bit (High Color)"
in the Remote Console or "LAN (High Colour)" in the web frontend. This option can also be preset in

the Section called User Console in Chapter 6

.

The sub menu "Compression" from the Options menu has no influence on the picture quality but on the
data rate of the picture that is transferred to the Remote Console.

Using the ASMI module with low bandwidth

The bandwidth of the network connection of the ASMI module is an important influence on the time
taken to transmit two consecutive video pictures. A connection with low bandwidth takes longer to
transfer the video data from the ASMI module to the Remote Console on the local host. Every time the
remote screen has changes requires a new picture to be sent.

In terms of transfer time there is no difference between text screens and screens in graphics mode. The
text screen is treated as graphics data no matter what the screen looks like and which video mode is
chosen.

You can choose a compression level from the sub menu "Compression" in the Options menu of the
Remote Console. This reduces the amount of data that has to be transmitted.

Please note that the video data will be compressed on the ASMI module, transmitted to the Remote
Console and unpacked in the local Java environment. Depending on the ASMI module and on the local
machine this procedure may take some time and may result in slow updates of the picture in the Remote
Console.

In order to improve the transmission speed you may also reduce the picture quality in the Remote
Console to either "8 bit" or even to grayscale. This measure causes less video data to be processed and is
likely to be more effective than selecting the highest compression level.

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