User's Guide

Table Of Contents
78 A c l a r a R F E l e c t r i c I - 2 1 0 + c U s e r G u i d e
LEDs
Also note the three surface mount LEDs at the bottom. The antenna connects with
a UF.L miniature coaxial connector. The miniature coax is taped down and routed
over a metal shield. It leads to the antenna mounted on the left side of the
assembly. The antenna is also pictured in the following image.
Figure 6.2
Meter and Aclara RF Network Antenna
The Aclara RF Network antenna is pictured in Figure 6.2. It mounts on the left side
of the meter assembly. The antenna looks like a thin piece of white plastic. It is a
flexible printed circuit board laminated on FR4 material. The antenna’s coaxial
connection is permanent and occurs at the middle of the board. The miniature coax
is routed through the middle of the meter -- just above the NIC board.
LEDs
The Y84074-1 NIC has three LEDs for communicating status to the user. The
Y84090-1 NIC does not have these LEDs. It relies instead on messages to the
meter LCD to communicate information to the user.
The three surface-mount LEDs pictured in Figure 6.1 are blue, red, and green
(respectively) when lit. They should be visible through the bottom side of the fully
assembled meter.
At power-up you may see the blue LED blink, illuminate steady on, then
extinguish. The blinking blue LED indicates that the NIC needs time from the
network. A steady-on LED indicates that it has obtained time. If the blue LED
Antenna’s Coaxial
Connection