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Integrated Power Monitors

Thu, 11/29/2001 - 8:38am
Decibel Products, an Allen Telecom company, released of its next generation Integrated Power Monitor, model DB8822. This Integrated Alarm Monitor is a low-cost sensor and display monitor for SWR and power on a single transmitter or antenna and combines RF sensing, display, monitoring functions and remote access into one compact package. Various models are available for frequencies from 30 -1000 MHz and power ranges from 100 -1000 Watts.

User-set parameters allow a wide range of configurations without complicated setup procedures. The monitor requires 9 - 32 V DC and will draw approximately 75 mA at maximum 12 V DC. A 12 V DC-wall type transformer is supplied with the unit. The power monitor is capable of local setup via Front Panel Controls and remote setup and alarm reporting via RS485 2-wire interface fixed at 9600 baud. Although it is intended for use with the DB8815A dbDialer to provide remote interface and reporting, it is possible to communicate with a PC or other computer equipment using the appropriate software and hardware interface conversion.

The serial command list has been included for those wanting to provide their own remote access, for example through existing equipment. In addition, the dialer continually polls each active address for alarm status. Should communications with a monitor fail, the dialer will generate a poll failure alarm.

The RS485 has several advantages over the RS232, particularly, greater noise immunity and multi-drop capability. The dbDialer can be connected up to 32 monitors and incorporates all commands and menus for remote access to the DB8822 in its 3.0 software version. Additional features include: Backlit LCD, Serial Comms, Form C Relay Output, Inline Mounting, Keeps Track of Keyed / Unkeyed Times, Small Package 4.75× 2.8× 1.1.

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