Unitech MS842P Manuel d'utilisateur télécharger pdf (Page 24)

USB Host Parameters

USB Device Type

Select the desired USB device type.

USB Virtual COM

USB Transmission Speed Parameters

Use the following parameters to speed USB data transmission:

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USB Polling Interval - When using more current USB systems, use this

parameter to set a lower interval in order to increase data transmission speed.

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Quick Keypad Emulation - When configured as a USB HID keyboard device,

use this parameter to increase the data transmission speed of a mix of both

printable (7-bit) and full (8-bit) ASCII characters.

USB Polling Interval

This option speeds data transmission for all USB devices except CDC. Scan a bar

code below to set the polling interval. The polling interval determines the rate at

which data can be sent between the scanner and the host computer. A lower

number indicates a faster data rate. The default value is 8 msec.

Changing the polling interval re-initializes the scanner.

CAUTION

Ensure your host machine can handle the selected data rate. Selecting

a data rate that is too fast for the host can result in lost data.

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Unitech MS842P Manuel d'utilisateur Page 24