6-17
RS-232 Interface
ACK/NAK
When this option is selected, after transmitting data, the scanner expects either an ACK or
NAK response from the host. When a NAK is received, the scanner transmits the same data
again and waits for either an ACK or NAK. After three unsuccessful attempts to send data
when NAKs are received, the scanner issues an error indication and discards the data.
The scanner waits up to the programmable Host Serial Response Time-out to receive an
ACK or NAK. If the scanner does not get a response in this time, it issues an error indication
and discards the data. There are no retries when a time-out occurs.
ACK/NAK
ENQ
When this option is selected, the scanner waits for an ENQ character from the host before
transmitting data. If an ENQ is not received within the Host Serial Response Time-out, the
scanner issues an error indication and discards the data. The host must transmit an ENQ
character at least every Host Serial Response Time-out to prevent transmission errors.
ENQ
ACK/NAK with ENQ
This combines the two previous options.
ACK/NAK with ENQ
Summary of Contents for QuickScan 3000
Page 1: ...QuickScan 3000 3500 Handheld Bar Code Scanner Product Reference Guide ...
Page 10: ...viii QuickScan QS3000 QS3500 Product Reference Guide ...
Page 22: ...1 6 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 34: ...2 12 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 42: ...3 8 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 52: ...4 10 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 83: ...6 7 RS 232 Interface RS 232 Host Types continued OPOS Fujitsu RS 232 ...
Page 85: ...6 9 RS 232 Interface Baud Rate continued Baud Rate 9600 Baud Rate 19 200 Baud Rate 38 400 ...
Page 104: ...6 28 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 124: ...7 20 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 130: ...8 6 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 306: ...13 80 QuickScan QS3000 QS3500 Product Reference Guide Alphanumeric Keyboard Space ...
Page 307: ...13 81 Advanced Data Formatting Alphanumeric Keyboard continued ...
Page 308: ...13 82 QuickScan QS3000 QS3500 Product Reference Guide Alphanumeric Keyboard continued _ ...
Page 311: ...13 85 Advanced Data Formatting Alphanumeric Keyboard continued K L N M O P R Q T S ...
Page 313: ...13 87 Advanced Data Formatting Alphanumeric Keyboard continued a b d c e f h g j i ...
Page 315: ...13 89 Advanced Data Formatting Alphanumeric Keyboard continued u v x w y z ...
Page 316: ...13 90 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 329: ...C 1 0 12345 67890 5 Appendix C Sample Bar Codes Code 39 UPC EAN UPC A 100 ...
Page 332: ...C 4 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 334: ...D 2 QuickScan QS3000 QS3500 Product Reference Guide 2 3 4 2 3 4 ...
Page 335: ...D 3 Numeric Bar Codes 5 6 7 5 6 7 ...
Page 336: ...D 4 QuickScan QS3000 QS3500 Product Reference Guide 8 9 9 8 ...
Page 338: ...D 6 QuickScan QS3000 QS3500 Product Reference Guide ...
Page 350: ...Index 6 QuickScan QS3000 QS3500 Product Reference Guide ...