9 - 16 MT2070/MT2090 User Guide
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.
NOTE
Emulate Keypad
and
Quick Emulation
override
Fast HID
IMPORTANT
Changing the polling interval re-enumerates the scanner. In corded operation, the user must wait up
to 10 seconds (depending on the system) prior to resuming scanning bar codes. If the user
continues scanning without waiting the required time period data may be lost.
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.
1 msec
2 msec
3 msec
4 msec
Содержание MT2070
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Страница 549: ...Appendix C Sample Bar Codes UPC A UPC E 0 12345 67890 5 0 123456 5 ...
Страница 550: ...C 2 MT2070 MT2090 User Guide UPC E1 EAN 13 EAN 8 Code 39 1 123456 2 3 456789 012340 1234 5670 123ABC ...
Страница 551: ...Sample Bar Codes C 3 Trioptic Code 39 Code 93 Code 11 456123 12345ABCDE Æ1234567890Æ ...
Страница 553: ...Sample Bar Codes C 5 PDF417 Data Matrix Maxicode ...
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