WeatherWarn Siren Interface Manual

WeatherWarn Siren Interface Manual
WeatherWarn
Siren Interface
Model WWARN-2
May 28, 2016
Copyright 2013 Weather Message Software LLC
Overview
The WeatherWarn Siren Interface facilitates the connection of a WeatherWarn computer
system to a two-way radio system. The Interface provides the necessary components to
transmit audio and receive and transmit DTMF for Whelen sirens. The Interface has the
added capability to manually activate sirens from the front panel toggle switch. The
following block diagram shows the functional connections.
Components
The WeatherWarn Siren Interface consists of the interface box, a 12 volt AC to DC
adapter, USB cable and 3.5mm stereo audio cable.
Front Panel
When the Interface is receiving power, the Power LED is illuminated. The DTMF Led is
illuminated when the interface receives or transmits DTMF. The Transmit Led is
illuminated when the interface is transmitting audio or DTMF.
The Alert protected toggle switch is used to manually activate sirens. To manually
activate the sirens, raise the protective switch cover and flip the toggle switch up. After
activation, the protective cover can be closed. When the cover is closed, the toggle
switch will automatically be switched off.
Note: When the toggle switch is flipped up, the sirens will be activated.
Copyright 2013 Weather Message Software LLC
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Rear Panel
The rear panel contains the connections to the WeatherWarn computer and two-way
radio. The 12 position and 4 position terminal strips are detachable to speed installation
and replacement of the interface.
Connections
COS Positive
COS GND
CG Positive
CG GND
PTT 1
PTT 2
Audio Out +
Audio Out GND
Audio Out Audio IN +
Audio GND
Audio IN –
Carrier operated squelch positive connection from radio.
Carrier operated squelch ground from radio.
Channel grant from radio.
Channel grant from radio.
Push to talk positive connection from radio.
Push to talk ground connection from radio.
Audio out positive connection to radio.
Audio out ground connection to radio.
Audio out negative connection to radio.
Audio in positive connection from radio.
Audio in ground connection from radio.
Audio in negative connection from radio.
USB
USB connection to the WeatherWarn computer.
Audio In
Audio Loop Out
Audio in from the WeatherWarn computer’s sound card.
Audio loop out to a second WeatherWarn interface.
Relay Out Common
Relay Out N.O.
Relay for external contact closure common connection.
Relay for external contact closure normally open connection.
Remote Alert In –
Remote Alert In +
Remote alert switch negative connection.
Remote alert switch positive connection.
12 Volt DC
External 12 volt DC connection.
Copyright 2013 Weather Message Software LLC
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Installation
The following diagram shows typical connections to the two-way radio.
Note: Shielded cable should be used for the connections between the interface and twoway radio.
Copyright 2013 Weather Message Software LLC
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The following diagram shows the remaining connections.
Note: The Alert switch can be placed at a remote location by using a single pole toggle
switch connected to the Alert In terminals.
Audio Connections
Copyright 2013 Weather Message Software LLC
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WeatherWarn Setup
Before audio adjustments can be performed, the interface needs to be configured in
WeatherWarn. Power up the Interface and plug the USB connector into the
WeatherWarn computer. The WeatherWarn computer should recognize that you have
plugged in a new device. It will access the Internet and download the driver software.
The Interface will be assigned a new serial communications (COM) port.
Start WeatherWarn, Click File, then Setup. Click the Siren Controller 1 tab. Change the
Interface Type for Interface 1 to WWarn-2. Select the serial port assigned to the
interface. Leave the Radio Serial port set to None. Enter the Area Code assigned to the
sirens. Click Save.
Copyright 2013 Weather Message Software LLC
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This completes the basic setup in WeatherWarn. See the WeatherWarn manual for
additional information on the settings for the siren controller.
WeatherWarn Tech Setup
WeatherWarn has a technician setup screen that is used to configure the Interface. In
WeatherWarn, click File and Tech Setup. The following screen is displayed.
Copyright 2013 Weather Message Software LLC
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The 30 Second Deviation Test is used to transmit a test tone for deviation adjustment.
See the Internal Adjustment section for internal adjustments in the Interface.
The Siren Interface Manual Activation Setup is used to program the Alert toggle switch
in the Interface. Enter the appropriate settings and click Save. The manual activation
settings will be downloaded into the Interface box. These settings are stored in the
Interface’s flash memory and are retained when the power is removed.
Internal Adjustments
After the interface has been installed, the audio levels should be adjusted. Remove the
cover from the Interface. There are three audio adjustment points, External Audio,
Computer Audio, and DTMF Generator.
The External Audio Adjustment controls the level of the received audio from the twoway radio.
The Computer Audio Gain controls the level of the audio received from the computer
sound card to the two-way radio.
The DMTF Generator Level controls the level of the audio sent to the two-way radio.
The 30 second deviation test can be used to adjust the DTMF Generator Level. The
DTMF level should be set to approximately 1.75 kHz on a narrow band channel.
Copyright 2013 Weather Message Software LLC
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Specifications
Power – 12 to 15 Volts DC at 500mA maximum
Audio Input – 600 ohms, transformer balanced – minimum -29 dBm, maximum +1 dBm
Audio Output – 600 ohms, transformer balanced – maximum 2 volts peak to peak.
Computer Audio Input – 8 ohms stereo.
COS / CG Input – 3 to 15 VDC.
PTT - Relay normally open, 200 VDC, 2 amp maximum.
External Relay – Relay normally open, 200 VDC, 2 amp maximum.
USB – USB 2.0 specifications presented as a standard communications port.
Operating Temperature - -35 to 70 degrees Celsius.
Size – 6.75” L x 7.0” W x 1.75” H
Copyright 2013 Weather Message Software LLC
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