User Manual

UGM Manual
Rev 0.1 ArKion Systems – Confidential Page 1
1. Introduction
The ArKion UGM (Under Glass Module) is an ISM band 902 to 928 Mhz frequency hopping
transceiver module. There are two radio performance options for this module, a high
power module with RF output power between 26dbm and 30dbm and a low power
module with RF output power of between 10dbm and 16dbm. The modules are intended
to be installed in an off the shelf electric meter with an interface providing power and a
serial data connection to the UGM module.
The power supplied by the electric meter is an unregulated 9~15Vdc. The UGM low
power module employs a switching regulator to regulate the supply voltage to 5Vdc and
then a linear regulator for a local 3.3V supply. For the high power module, an AC to DC
universal switching power supply draws power directly from the AC mains connected to
the electric meter. The supply generates a regulated 5V. A linear regulator is used to
then create a local 3.3V
The serial port is a logic level asynchronous port with a TX and RX lines. All data is
buffered on the UGM module to/from the electric meter. The UGM interrogates the ANSI
C.12 register set in off the shelf solid-state electric meters from Landis + Gyr. It’s main
function is to obtain energy consumption, negative consumption, and voltage readings
for billing, distribution monitoring, fraud detection, and conservation purposes. Meter
reading interval is remotely settable. Information retrieved from the meters registers are
temporarily stored within the Smart Meters solid-state memory. On a specified interval,
the Smart Meter will automatically transmit this information to the ArKion AMI server via.
other meters or CCOM using the Radio Frequency (RF) network. The ArKion AMI server
analyzes and archives the readings.
The UGM uses SuperCapacitors to support transmission of power failure messages and to
maintain the time of day clock. The Smart Meter does not use any internal batteries
eliminating need for field service.
2. Supported Products
 UGM high
 UGM low Power
Note: High and low power refer to RF output power. low power is approximately +13dbm
and high power is +30dbm Max. Other than transmit power the operation of the two
radios is identical.
3. Product Block Diagram
The UGM module design contains 3 basic blocks, a processor & memory block, an RF
transceiver block, and for the high power version an RF Power amplifier block. Both of
the RF sections are isolated under their own RF shield.