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Symbol LS4278 Product Reference Guide
Auto-reconnect Feature
When in SPP Master, HID Master or Cradle Host mode, the scanner automatically tries to reconnect to a remote device when a
disconnection occurs that is due to the radio losing communication. This can happen if the scanner goes out of range with the remote
device, or if the remote device powers down. The scanner tries to reconnect for the period of time specified by the Reconnect Attempt
Interval setting. During that time the green LED continues to blink.
If the auto-reconnect process fails due to page time-outs, the scanner sounds a page timeout beep (long low/long high) and enters
low power mode. The auto-reconnect process can be re-started by pulling the scanner trigger.
If the auto-reconnect process fails because the remote device rejects the connection attempt, the scanner sounds a connection reject
beep sequence (see
Wireless Beeper Definitions on page
code must be scanned to attempt a new connection to the remote device.
If a bar code is scanned while the auto-reconnect sequence is in process, a transmission error beep sequence
sounds and the data is not transmitted to the host. After a connection is reestablished, normal scanning
operation returns. For error beep sequence definitions, see
The scanner has memory available for storing a remote Bluetooth address for each Master mode (SPP, HID, Cradle). When switching
between these modes, the scanner automatically tries to reconnect to the last device it was connected to in that mode.
Switching between Bluetooth host types by scanning a host type bar code
reset. Scanning is disabled during this time. It takes several seconds for the scanner to re-initialize the radio
at which time scanning is enabled.
Reconnect Attempt Beep Feedback
When a scanner disconnects as it goes out of range, it immediately attempts to reconnect. While the scanner attempts to reconnect,
the green LED continues to blink. If the auto-reconnect process fails, the scanner emits a page timeout beep (long low/long high) and
stops blinking the LED. The process can be restarted by pulling the trigger.
The Beep on Reconnect Attempt feature is disabled by default. When enabled, the scanner emits 5 short high beeps every 5 seconds
while the reconnection attempt is in progress.
Scan a bar code below to enable or disable Beep on Reconnect Attempt.
*Disable Beep on Reconnect Attempt
4-5) and deletes the remote pairing address. If this happens, a pairing bar
Beeper Definitions on page
(page
Enable Beep on Reconnect Attempt
2-3.
4-6) causes the radio to be