User's Manual

TQ21 Connections
6-2
Setup the programming site, as shown in Figure 6.1:
Figure 1-4: P TQ21 Tag Qualifier Setup
TQ21 Connections
1. Connect the RS232 cable. Plug one end of the cable (DB9-Male) into the 9-pins connector on
the TQ21 (marked as RS232). Plug the other end of the cable (DB9-Female) into the serial port
(typical COM1) of your computer.
2. Connect the power adapter. Plug the power adapter output into the connector marked as
12Vac.
3. Turn on the TQ21 by connecting the power adapter into an available electrical outlet. The
POWER LED (green) goes ON, and the TQ21 performs a brief startup sequence, during
which the DATA LED (red) stays ON continuously for 5-7 seconds. After finishing the startup
sequence the DATA LED must turn OFF and the sign-on message Tag Qualifier TQ21
(c)Copyright Lyngsoe Industries Ltd. 2001 will be displayed on the PC.
4. TQ21 Sensitivity Threshold. Set the carrier threshold of TQ21 by sending the command S,
then save the setting by sending the commands:CONFIG:STORE and:RESET.
IMPORTANT NOTE
• The Power LED (green) lights to signalize that the power is connected to the TQ21.
• The DATA LED (red) lights continuously during the startup sequence and flashes when UHF
signals are received.
• The TQ21 cannot be used for testing if the Data LED randomly flashes after the startup
sequence is finished. In this case the sensitivity threshold must be set again and/or the source
of unwanted transmission eliminated.
Configuration
PC or Laptop
DB9-Female
Power Supply
12Vac [12-16Vdc]/0.3A
RS232 Cable
Data LED
Tag Qualifier
TQ21
Power LED
DB9-Male