GV-EV48 Controller
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6.2 Installation
6.2.1 Connecting RS-485 Card Readers
With a single RS-485 cable, you can connect up to 2 GV-Readers and / or GV-GF
Fingerprint Readers to the RS-485 interface on GV-EV48.
Figure 6-2
To connect to GV-CR420 or GV-GF1921 / 1922 through network connection, refer to 8.3.1
Extended Reader for details.
Note: When the RS-485 connection between GV-EV48 and the reader is over a long
distance, you can turn ON the RS485 A Terminal switch if the signal is unstable. RS485_B
Terminal Resister is not functional.
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