USB Interface 5 - 15
USB Transmission Speed Parameters
Use the following parameters to speed USB data transmission:
•
- When using more current USB systems, use this parameter to set a lower interval
in order to increase data transmission speed.
•
- When configured as a USB HID keyboard device, use this parameter to increase
the data transmission speed of printable (7-bit) ASCII characters.
•
- 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.
NOTE
Enabling
Quick Keypad Emulation on page 5-17
CAUTION
Ensure the host can handle the selected data rate. Selecting a data rate that is too fast for the host can
result in lost data.
1 msec
2 msec
Summary of Contents for DS9208-1D
Page 1: ...DS9208 1D DIGITAL SCANNER PRODUCT REFERENCE GUIDE ...
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Page 3: ...DS9208 1D PRODUCT REFERENCE GUIDE 72E 162626 01 Revision A May 2012 ...
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Page 239: ...APPENDIX C SAMPLE BAR CODES Code 39 UPC EAN UPC A 100 123ABC 0 12345 67890 5 ...
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