Symbol LS7708 Product Reference Guide2-6
Selecting Beeper Volume
The scanner emits a short beep when it successfully reads a bar code. To change the volume of the beep scan the beeper volume bar
code on page 4-7, or use the two-function Volume Control and Wakeup button (see Figure 1-1 on page 1-3) on the front of the scanner
as follows:
1. Press and hold the button for approximately five seconds. The scanner cycles through three settings (low, medium, high)
emitting a two-beep tone at each setting.
2. To select a particular setting, release the button after the desired two-beep tone is heard.
Sleep Mode
The scanner enters Sleep mode when it is inactive for a specified length of time. The scanner has two levels of sleep: laser and motor.
In laser sleep mode, after ten seconds of inactivity the laser pulses at a 50% rate, then drops to 3% after a specified time. In motor
sleep mode, the scanner turns off the motor and the laser.
To wake the scanner from sleep mode, press the Volume Control & Wakeup button (see Figure 1-1). In laser sleep mode, also wake
the scanner by presenting a bar code to the scanner window.
LED Definitions
The scanner also communicates via an LED (see Figure 1-1). Table 2-2 defines LED indications that occur during scanning.
RS-232 Auxiliary Port only
1 short high beep A complete block of data was received and sent to the host, either due to a carriage return or b ecause the two-second
serial response timeout has elapsed.
4 long low beeps A data overrun condition has occurred. Do not scan data from other ports when large amounts of data are sent to the
RS-232 auxiliary port.

Table 2-2. Standard LED Definitions

LED Indication
Off No power is applied to the scanner.
Green The scanner is on and “ready to scan.”
Momentary green flash A bar code was successfully decoded.
Slow continuous red flashing, green on The scanner is in programming mode.
Fast continuous red flashing, green on There is an internal problem; the laser is shut off for regulatory reasons.
Green on (and laser blinking) Scanner is in Low Power Blink mode.
Red and green on Scanner is in Low Power Motor and Laser Shutdown mode.

Table 2-1. Standard Beeper Definitions

Beeper Sequence Indication