Specifications

Page 14

 Use Category 5 rated cable (shielded is recommended). This cable

should be dedicated to the RS-485 network connection between the

B&B Electronics 485TBLED converter and the V-Smart readers and

should not be used for any other purpose.

 Use Pin 7 [RS-485 (-)], Pin 8 [RS-485 (+)] and Pin 12 [Signal GND].

 The B&B Electronics 485TBLED converter shall require 12VDC/100mA

power from an external supply.

 Connect the B&B Electronics 485TBLED converter to the PC’s DB9 COM

Port using a DB25-to-DB9 cable.

 Connect the V-Smart readers in a daisy-chain configuration (i.e.

Converter → Reader 1 → Reader 2 → Reader 3, etc.). Do NOT use a

star or other multi-drop configurations.

For a wiring diagram and more specific instructions please refer to the

Configuration for Veri-Series Fingerprint Readers and RS-485/RS-232 Converter

application note.

7.2. RS-232 DB15 Port

The RS-232 DB15 port shall be dedicated to communications between the

fingerprint verification module and smart card interface module of the V-

Smart and therefore, shall not be available for PC communications.

7.3. RS-232 RJ11 Port

The V-Smart reader shall provide a RS-232 RJ11 port on the bottom of the

device for convenient access. This shall be the default configuration for the

reader. This RJ11 port is implemented as a 6p6c (6-position, 6-conductor)

jack. This port is physically protected by means of a pin-in-hex security screw.

Additional security is provided through a password protection feature, which

may be activated through the VeriAdmin software.

Additionally, an RJ11-to-DB9 programming cable shall be provided with each

V-Smart reader. This cable is a 6-foot, 6p6c straight-thru cable with an RJ11-

to-DB9 adaptor. This cable should be used to configure the reader and may

optionally be used for template management and other functions desired via

a local connection.

The RS-232 protocol does not run on a differential pair of wires like the RS-485

protocol, and shall therefore be less immune to EMI and other noise sources.

The tradeoff for RS-232 shall be speed versus distance. RS-232

communications distances are dependent on the baud rate (bps). For