User Manual

8
Front Panel
The scanner front panel has three LEDs (as shown in Figure 4) indicating
power, activity, and transmitter ON/OFF (see Table 1 which describe
the meanings of the LEDs).
The scanner front panel has an On/Off switch.
In the ON (up) position, the scanner is turned on. The red Power
ON LED should go ON, indicating that the scanner is receiving
power.
In the OFF (down) position, the scanner is turned off and not
receiving power, even if connected to a power outlet.
The front panel also contains three connectors. The lower connector is a
DC power receptacle. For more information, refer to “Connecting to a
DC Source” on page 14.
The middle connector is the 9-pin RS-232 port. The RS-232 serial port
connector allows the scanner to communicate with a personal computer
Figure 4. U519 InstaScan Scanner
U519 FCC rewrite 2-22-01.p65 2/22/2001, 2:43 PM8