Honeywell 4820 Scanner User Manual


 
2 - 18
receiver time-out by scanning the barcode below, then scanning digits from the
inside back cover of this manual, then scanning
Save
. The range is 0 to 300
seconds.
Default = 0 seconds (no time-out - always on).
RS-232 Handshaking
RS-232 Handshaking allows control of data transmission from the image scan-
ner using software commands from the host device. CTS/RTS operates in
mode 2. When this feature is turned
Off
, no data flow control is used. When
Data Flow Control is turned
On
, the host device suspends transmission by
sending the XOFF character (DC3, hex 13) to the image scanner. To resume
transmission, the host sends the XON character (DC1, hex 11). Data transmis-
sion continues where it left off when XOFF was sent.
Default = RTS/CTS, XON/
XOFF and ACK/NAK Off
.
Host ACK Selection
Some applications require that the host terminal (or server) approve or reject
incoming barcode data and notify the operator of these actions. These applica-
tions require that the host maintain control over the response indicators emitted
from the image scanner. Turning on Host ACK configures the image scanner to
respond to commands from the host system.
Note: System performance degrades when using Host ACK at rates lower than
9600 baud.
RS-232 Receiver Time-Out
RTS/CTS On
* XON/OFF Off
* RTS/CTS Off
XON/XOFF On
ACK/NAK On
* ACK/NAK Off