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VSP3 Voice Radio Interface Module

Overview

The VSP3 is a radio interface that converts data into voice messages that can be transmitted via a UHF or VHF transceiver. It allows customers to call their site using a hand-held radio and receive a verbal report of real-time site conditions.

The VSP3 uses phonetic native text-string-to-speech conversion, which provides for an unlimited vocabulary.

Ideal applications include fire weather, avalanche forecasting, local weather monitoring, irrigation control, water level monitoring, water quality, and industrial process control.

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Benefits and Features

  • Broadcasts voice data to a hand-held radio with a matching radio frequency
  • Converts data from SDI-12 compatible dataloggers, data acquisition systems, or sensors into voice messages
  • Provides unlimited vocabulary

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Detailed Description

The VSP3 Vosponder, manufactured by DACOM Technologies, Inc., allows customers to call their site using a hand-held UHF or VHF radio and receive a verbal report of real-time site conditions. Ideal applications include fire weather, avalanche forecasting, local weather monitoring, irrigation control, water level monitoring, water quality, and industrial process control.

Customers initiate voice transmissions by pressing buttons on a hand-held radio. Once initiated, the Vosponder uses an SDI-12 interface to collect raw digital data from a Campbell Scientific datalogger. The Vosponder then converts the collected data into natural human speech and recites a verbal message.

Specifications

Operating Temperature -10° to +55°C
Programming Interface Port RS-232; communications parameters, data rate 2400 bps, no parity, 8 data bits, 1 stop bit, XON/XOFF
Data Interface Ports SDI-12 three wire interface, emulates either a record (master mode) or a sensor (slave mode) using a subset of the SDI-12 protocol definition
Output Level 10 to 2.5 mV
Output Impedance 5 kohm nominal (capacitor blocked)
Carrier Operated Squelch Input 1.5 to 5 Vdc @ 10 mA (max)
Input Level 25 mV to 5 V (factory adjustable)
Input Impedance 10 kohm dc resistance (not capacitor blocked)
Power Requirements 10 to 16.8 Vdc
Power Consumption @ 12.6 Vdc
  • 25 mA (quiescent)
  • 75 mA (active)
Dimensions
  • 16.5 x 9.5 x 3.8 cm (6.4 x 3.75 x 1.4 in.) without connectors and bracket
  • 22 x 9.5 x 3.8 cm (8.5 x 3.75 x 1.4 in.) with connectors and bracket
Weight 380 g (0.9 lb)

DTMF Decoder

Twist -10 to +6 dB
Maximum Signal-to-Noise Ratio 10 dB
Minimum Detect Tone Duration 40 ms
Minimum Interdigit Time 30 ms

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Dataloggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800
CR850
CR9000 (retired)
CR9000X

Mounting Equipment

Product Compatible Note
ENC10/12
ENC10/12R
ENC12/14
ENC14/16
ENC16/18

Additional Compatibility Information

Radio Requirements

A minimum of two radios with matching frequencies is required. One radio connects to the Vosponder at the remote site; the other radio resides at a mobile site or base station. Our RF310, RF312, and RF313 radios can be used at the remote site. The radio at the mobile site or base station must have a speaker, a keypad, and the ability to issue Dual Tone Multi-Frequency (DTMF) tones.

Datalogger Considerations

The VSP3 communicates with the datalogger via the SDI-12 protocol. An SDI-12 cable is shipped with the VSP3 to connect it to the datalogger.

Enclosure Considerations

A desiccated, non-condensing environment is required. The VSP3 includes built-in keyhole flanges for mounting to the backplate of a Campbell Scientific enclosure.

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