RAWS-H Remote Automated Weather Station
5.5 Voice Radio Interface
5.5.1 General Description, Voice Radio Interface (part #VSP3)
The DACOM Voice Radio Interface (part #VSP3) shown in Figure 5.5-1 is
mounted inside the RAWS environmental enclosure. The VSP3 converts data
into voice messages that can be transmitted via UHF or VHF transceiver. The
VSP3 Vosponder uses phonetic native text string to speech conversion, which
provides for an unlimited vocabulary. The Vosponder communicates with a
datalogger using the SDI-12 protocol. The VSP3 Vosponder can be integrated
into an existing UHF/VHF radio network. A minimum of two radios with
matching frequencies is required. The VSP3 ships preprogrammed with a
voice image file for the fire weather market.
A minimum of two radios with matching frequencies is required
to transmit voice messages. To activate the voice file, hold down
the radio microphone button and press 9 on the radio keypad.
Radios can be purchased from Campbell Scientific.
NOTE
FIGURE 5.5-1. Voice Radio Interface
5.5.2 Wiring, Voice Radio Interface (part #VSP3)
The Voice Radio Interface (part #VSP3) is mounted inside the RAWS
environmental enclosure and the VSP3 connections are described below.
Voice Radio Interface (part #VSP3) inside the RAWS environmental
enclosure
VSP3 “Ground” terminal contact
--to-- CR1000 PC Board “G”
VSP3 “+12V” terminal contact
--to-- CR1000 PC Board “+12V”
VSP3 “DATA” terminal contact
--to-- CR1000 PC Board “C1”
VSP3 “RADIO” RJ45 Connector
--to-- UHF/VHF Radio*
*Note: Maxon and Bendix King Radio cables are available from Campbell
Scientific.
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