Figure 2
RS-485
NETWORK
ID
SIGNAL
STRENGTH
GND
SIGNAL A
SIGNAL B
NETWORK ID
SIGNAL STRENGTH
1
2
3
4
NO SIGNAL
OK
STRONG
VERY
STRONG
12. Signal Strength Indicator LEDs
– These LEDs ONLY indicate the strength of the
received signal when DIP switch 7 (Figure 1) is UP. The rule of thumb is that more
LEDs are better. However, as long as you have at least ONE LED and it is on SOLID,
there is a solid data connection. In NORMAL mode, the lower LED will be on SOLID
and indicates that the unit is powered on.
Outdoor Installation
For outdoor applications, use the CA-AIR485-N which consists of an AIR-485 unit housed in a
plastic Nema enclosure c\w external antenna. This configuration is temperature rated for -40
o
C
to +85
o
C. The front of the enclosure is transparent allowing the status LEDs to be checked
without opening it.
