User's Manual

Reader - Final Setup
5-18 Configuration and Operation
Reader - Final Setup
1. Disconnect the PC from the Reader (See Figure 5-1 on page 5-2).
2. For network installations set jumper (P3) on the Motherboard MBD21 for “RS485” position.
For more information on communication lines used by the Reader RD21, refer to Chapter 2,
Reader RD21 Installation and Connections.
3. Verify the connections between the Reader and the rest of the equipment (shorts, loose
connections, etc.)
4. Close the Reader’s enclosure.
S21 RFID System - Final Test
IMPORTANT * These tests must be done after all Readers and the Main PC are connected to the network
according to the site documentation.
* The PC must be connected using an appropriate serial communication interface.
* To communicate with the Reader, either use a terminal emulation program, such as Hyper
Terminal or Procomm in MS Windows applications, or the dedicated service module of the
application software running on the Main PC.
* All commands to the Reader must include the address field @r where r is the Reader’s address
(an integer followed by a blank).
You must repeat the following procedure for each Reader that is connected to the Main PC.
For the final test, do the following:
1. Verify that the Reader is communicating with the Main PC, by typing:
@r IVN <Enter>
where r is the Reader’s address. The Reader must respond with the software’s version number.
2. Set up the Carrier Threshold for the Reader as follows:
a) Switch on the excitation field, by typing:
@r B <Enter>
b) Check the noise level, by typing:
@r HNL<Enter>
If there is no unwanted transmission on the UHF channel, the Reader must respond with a
value lower than -95dBm for the
HNL parameter. If not, refer to Setting Up the Carrier
Threshold on page 5-10.
c) Check and record the value for the existing Reader’s Carrier Threshold level, by typing: