Digital Voice Modem ARD9000 Instruction Manual AOR, LTD.
Thank you for purchasing the AOR ARD9000 Digital Voice Modem. All over the world, hams have been discovering how much fun it is to work HF without background noise. AOR sets the pace in this breakthrough technology with its ARD9800. Now, in response to worldwide demand, AOR has developed the ARD9000 which makes digital voice communications even more affordable. AORAs digital voice technology delivers audio quality you have to hear to believe.
Features: z No transceiver modifications needed. The ARD9000 uses the same audio frequencies (300Hz~2500Hz) as microphone audio to modulate the voice signal. This allows you to use an analog radio as a digital voice radio. z Works on Single Side Band (SSB) mode. The Automatic frequency clarifier function adjusts frequency offsets automatically in the SSB mode. (Approximately up to +/- 125Hz). Utilizes the OFDM (Multi Carrier Modulation) circuit that is effective against Multi-path or Selective Fading.
Precautions To prevent fire, personal injury, or unit damage, please observe the following precautions: z Do not attempt to adjust this unit unless instructed to do so by this manual. z Do not expose the unit to direct sunlight or place the unit close to heating appliances. z Do not place the unit in excessively dusty, humid or wet areas. z We are not responsible for any damages to the radio equipment due to improper settings or interface.
Table of Contents Page Supplied & optional accessories --------------------------------------------------- 5 Wire connection ------------------------------------------------------------------------ 6 Magnetic mount ------------------------------------------------------------------------ 6 Controls and functions --------------------------------------------------------------- 7 Front panel ---------------------
Supplied Accessories The following items are provided in the package: Accessory Quantity Speaker Microphone Speaker Cable DC Power cable 8 pin metal plug (for radio cable) Instruction manual on CD Magnetic mount base (CR25) with screw (M3) Optional Accessories Pre-wired microphone interface cable for most popular transceivers.
Wire connection The graphic below describes the basic cable connections to allow you to operate the ARD9000 in its default configuration. Magnetic mount The supplied magnetic mount base holds the ARD9000 in place against any metal surface.
Controls and Functions Front Panel The supplied speaker-microphone is provided for your convenience. However if you prefer not using the supplied speaker-microphone, or a speaker-microphone of another standard, please read following points -aa and bb. a. SPEAKER OUT Connector (2.5 mm mono jack) Insert the supplied speaker-microphone into the connectors -aa and bb. If you wish to use your own headphone, then connect it to aa. b. Microphone connector (3.
c. Overload indicator 1) Microphone level (transmission only) Lit when the microphone input is overloaded in transmitting voice. A proper microphone input level will light the LED from time to time when speaking into the microphone at a normal voice level. The microphone level can be changed by adjusting the microphone level controller. Refer to the Presetting - Microphone Level chapter for details.
e. Status LED SITUATION Analog standby Digital standby Analog transmit Digital transmit Digital receive LED Off Green Red Orange Green blinking f. Synchronization push button Enables the re-synchronization of digital reception if synchronization is lost during a communication session. g. Power / volume knob Only applicable for DIGITAL reception. Adjustment for speaker/headphone output level, as well as for the speaker output on the rear panel.
Color RED BLACK Polarity Positive (+) Negative ( - ) i. SPEAKER OUT Connector (3.5 mm mono jack) To connect an external speaker (not supplied). Once connected, the speakermicrophone-s speaker is disabled. j. SPEAKER IN Connector (3.5 mm mono jack) Connect to the transceiver s speaker output with the supplied cable. (Input level: 0.
k. RADIO Connector Using the supplied 8-pin connector, connect the ARD9000 to your transceiver s microphone input. You will need to prepare your own microphone connector and cable for your transceiver. Wire a cable according to the microphone connector specifications of your radio (refer to your radio operator f s manual) Below are the pin assignments of the ARD9000 connector.
Presetting Microphone Level The microphone level has been properly adjusted at the factory with the provided speaker-microphone. Therefore, no further adjustment is needed for normal operation. If you wish to use your own microphone rather than the included one, you will need to wire your microphone connector to match the pins of the ARD9000, and then adjust the microphone level as described in the following steps: 1. Connect your microphone to the Microphone connector on the ARD9000. 2.
correctly set to enable effective operation with your transceiver. The ARD9000 allows you to apply separate settings for analog and digital transmissions (also see the diagram below). . 1. Connect the supplied speaker microphone to the ARD9000 first, then connect your radio to the RADIO terminal of the ARD9000 by using your prepared connection cable. Now turn ON the ARD9000. 2. Make sure that the output level pot ANA-OUTOor DIG-OUTOis set to factory default. 3.
Input Level from Radio Analog voice: The ARD9000 does not provide any sound amplification for analog voice! Analog voice from your radio is bypassed directly to the ARD9000 speaker and has to be adjusted with your radions audio gain control (as per diagram below). Digital Voice: Although the factory setting should work with most transceivers, it is possible to adjust the audio input level manually. This level must be correctly set to enable effective operation with your transceiver.
Operation Voice Communication Your ARD9000 is capable of Digital Voice Communications and Analog Voice Communication. In the receive mode, the ARD9000 will automatically recognize the type of communication, and set the appropriate operation mode (analog or digital). Remember that in order to receive SSB transmissions, you need to set the ARD9000 to SSB mode, and in FM mode to receive FM transmissions.
Specifications ARD9000 Specification Modulation method: OFDM Bandwidth: 300 Hz - 2500 Hz, 36 carriers Symbol Rate: 20 mS (50 baud) Guard interval: 4mS Tone steps: 62.5 Hz Modulation method: 36 carriers: DQPSK (3.6K) AFC: +/- 125 Hz Error correction: Golay + Hamming Header: 0.5-2sec.
Addendum Audio buzz in analog mode The ARD9000 is popular and selling well, since its introduction to the amateur radio market on May 2005. The supplied speaker/microphone works very well, as the modem settings are optimized for this particular speaker/microphone. Some of our customers have pointed out that if another microphone is used and the audio settings not carefully adjusted, that the ARD9000 might not function correctly, or that an audio buzz appears in analog mode.
AOR, LTD. 2-6-4, Misuji, Taito-Ku Tokyo, 111-0055, Japan http://www.aorja.
