User`s guide

2-5
2.5 Internal Components of the DCM-200
Figure 2-5
Internal View of the DCM-200 (prior to 2006)
The main components of the DCM-200 are:
• “GUTC” circuit board (General Utility for Telemetry and Control): Contains the
microprocessor electronics and RS-232 port for communications with the electric
meter
• Cellular Radio Module: Operating on a similar concept as a hand-held voice
phone, the cellular radio module provides the digital link for the wireless
exchange of data. For units built before 2006 this is a Motorola g18 GSM radio.
For units built starting in 2006 this is a Motorola g20 GSM radio.
• Antenna: The standard antenna configuration for the cellular radio module
consists of a special rectangular radiator with an RF connector mounted directly
to the radio (shown in Figure 2-5). An alternate antenna may be secured to the
inside wall of the enclosure and connected to the radio with a short coaxial cable.
There may also be an externally-mounted antenna. See Sections 2.10 and 2.11
for more information.
• Power Supply Board: Converts the AC line power to approximately 5.9 volts DC
for use by the GUTC board and the cellular radio module.