Zebex Z-3272 Plus, Руководство пользователя

Страница: 15 / 205

2D Image Gun ‐ Type Handheld Scanner 5
U
SER
’
S
M
ANUAL
Connecting to the Host
Follow the steps below to connect the interface cable to the host.
1. Connect the host ‐ end of the interface cable to the appropriate connector on the
host system.
2. For those cases where external power is used, plug the external AC power adapter
into the jack on the interface cable.
Power Connection
The scanner turns on when power is supplied, and turns off when power is removed.
There is no on/off switch on the scanner itself.
The scanner requires a minimum of 2W at 5VDC power. The interface cable that comes
with the scanner supports both direct power (where the scanner takes power from the
host machine) and external power (that’s what the supplied power adapter is for). A
sufficiently robust POS system can support a scanner successfully without external power;
a POS system with a barely adequate power supply may produce erratic performance
(either of the POS system itself, or of the scanner, or both) when a scanner is attached.
To ensure steady performance, the host system should be capable to supply a minimum
of 400mA of current @ 5VDC. Unless you are sure your POS system can handle such
loading, it is recommended that you use the qualified power adapter. When an external
adapter is connected, the scanner will automatically switch off the direct power from
host to scanner.
Use only an AC/DC power adapter approved for the scanner. Use of other
power supplies may cause damage to the scanner, and void the factory
warranty.