User Manual

2-4 The LC unit LC 1200 Manual
A Look Inside
 LEDs
 Jumpers
 Potentiometers
 Tamper Switch
 Terminals
Let’s take a look at a simplified version of the
inside of the LC unit (Figure 2.6).
Figure 2.6
The LC unit PCB (modified for simplicity)
LEDs
LED1 (Tx Gain Level) (Yellow)
This LED indicates the strength of the Tx
Activation Field. The size of the Tx Activation
Field determines the “range” of the LC unit to
activate Tags and take appropriate action. LED1
should be illuminated when the LC unit has
power.
LED2 (Rx Indicator 1) (Red)
This LED indicates a 418 MHz signal is present
in the immediate area (not necessarily a valid
Tag). For Tag validation, see LED5.
LED3 (Rx Indicator 2) (Red)
This LED indicates a 418 MHz signal is present
in the general area (not necessarily a valid Tag).
For Tag validation, see LED5.
LED4 (Delayed Tag Detect) (Yellow)
This LED indicates the Delayed Tag Detect is
active. The LC unit uses Delayed Tag Detect to
assure complete coverage and prevent relay
contact damage.
LED5 (Real-time Tag Detect) (Red)
This LED indicates an active valid Tag in the
area.
Jumpers
JP1 (Frequency Select) Default position: IN 1-2
Available frequency written on sticker.
This jumper is used to select the operating
frequency of the LC unit.
JP2 (Tone Enable) Default position: IN
This jumper controls the internal peizo. This
jumper should only be removed during service
to the LC unit since it disables audible
notification of all internal alarms (i.e., Egress,
Tamper, and Power Loss Supervisor).