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RS232 Receiver Time-Out

The unit stays awake to receive data until the RS232 Receiver Time-Out

expires. A manual or serial trigger resets the time-out. When an RS232

receiver is sleeping, a character may be sent to wake up the receiver and reset

the time-out. A transaction on the CTS line will also wake up the receiver. The

receiver takes 300 milliseconds to completely come up. Change the RS232

receiver time-out by scanning the bar code 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).

RS232 Handshaking

RS232 Handshaking allows control of data transmission from the scanner using

software commands from the host device. When RTS/CTS is turned Off, no

data flow control is used.

Flow Control, No Timeout: The scanner asserts RTS when it has data to

send, and will wait indefinitely for CTS to be asserted by the host.

Two-Direction Flow Control: The scanner asserts RTS when it is OK for the

host to transmit. The host asserts CTS when it is OK for the device to transmit.

Flow Control with Timeout: The scanner asserts RTS when it has data to

send and waits for a delay (see RS232 Timeout on page 2-23) for CTS to be

asserted by the host. If the delay time expires and CTS is not asserted, the

device transmit buffer is cleared and scanning may resume.

Default = RTS/CTS Off.

RS232 Receiver Time-Out

Flow Control, No Timeout

* RTS/CTS Off

Two-Direction Flow Control

Flow Control with Timeout

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Blackberry 1902G Betriebsanweisung Seite 56