®
ARD9900
FAST RADIO MODEM
Multi-Mode and Digital Voice Interface
Operating manual
AOR, LTD.
1
Thank you for purchasing the AOR ARD9900 Multimode and Digital Voice Interface.
The ARD9900 is designed to convert your HF radio equipment to a multi mode and digital voice
capable radio without performing any modifications to your transceiver.
Please read through this instruction manual and familiarize yourself with the operation of the
ARD9900.
We suggest you keep this instruction manual for future reference.
We believe the ARD9900 will become a powerful tool to your communication capabilities.
AOR, LTD.
2
Features:
Digital voice communications using existing analog 2 way radios with encryption.
The ARD9900 uses the same audio frequencies (300 Hz ~ 2500 Hz) as microphone
audio to modulate the voice signal. This allows you to use an analog radio as a digital
voice transceiver.
Digital voice communications in the Single Side Band (SSB) mode.
The automatic frequency clarifier function adjusts frequency drift automatically in the
SSB mode. (Approximately up to +/- 125 Hz).
Utilizes the ODFM (Multi Carrier Modulation) circuit that is effective against Multi-path or
Selective Fading.
Automatic digital receive
Automatic voice signal detector recognizes the received signal as analog or digital,
automatically switching to the appropriate mode.
Digital Slow Scan TV (SSTV)
Built-in video-capture function (NTSC or PAL depending on version)
Compresses the signal into our original adaptive JPEG format. Send and receive
images in the Digital mode. Built-in video output connector allows viewing the picture on
an external monitor.
Built–in high grade Vocoder (AMBE)
Utilizing high grade digital voice compression; delivers quality digital voice
communications.
Built-in FEC error correction
A powerful error correction circuit delivers stable and reliable communications.
Data communications on the HF band
Data communication is possible on the HF (High frequency) bands at no extra cost.
(Speed may be limited by regulations in certain jurisdictions.)
Small and compact unit. Easy to operate.
Simply connect the ARD9900 to the microphone jack and the speaker out jack. No
complicated or risky radio modifications are necessary.
Utilizes a uniquely designed high performance DSP (Digital Signal Processor) engine
Battery operation for field use.
3
Information to the Digital Device user
This equipment uses and can generate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that the interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer for technical assistance.
Precautions
To prevent fire, personal injury, or unit damage, please observe the following precautions:
Do not attempt to adjust this unit unless instructed to do so by this manual.
Do not expose the unit to direct sunlight or place the unit close to heating
appliances.
Do not place the unit in excessively dusty, humid, wet areas.
We are not responsible for any damages to the radio equipment due to improper settings
or interface.
We are not responsible for any loss of communications due to an unexpected change of
propagation or operating environment.
4
Table of Contents
Page
Supplied Accessories ------------------------------------------------------------------------------------ 5
Controls and functions ---------------------------------------------------------------------------------- 5
Front Panel -------------------------------------------------------------------------------------------- 5
Rear Panel -------------------------------------------------------------------------------------------- 8
Top Panel ----------------------------------------------------------------------------------------------10
Internal View ------------------------------------------------------------------------------------------10
Bottom View -------------------------------------------------------------------------------------------11
Interfacing the ARD9900 -------------------------------------------------------------------------------12
Connection to a Radio ----------------------------------------------------------------------------- 12
Connection to a Microphone --------------------------------------------------------------------12
Connection to a PC ------------------------------------------------------------------------------- 13
Connection to a Power supply ------------------------------------------------------------------ 13
Connection to an External speaker ------------------------------------------------------------ 13
Level Adjustment ----------------------------------------------------------------------------------------14
Microphone level ------------------------------------------------------------------------------------14
Radio Input level -------------------------------------------------------------------------------- 14
Code Setting ---------------------------------------------------------------------------------------------- 15
Master Key Code Setting -------------------------------------------------------------------------15
User ID Code Setting ------------------------------------------------------------------------------15
Air Key Code Setting ------------------------------------------------------------------------------16
Channel Switch Setting ---------------------------------------------------------------------------16
Operations ------------------------------------------------------------------------------------------------18
Voice Communication -----------------------------------------------------------------------------18
Digital Voice Communication ----------------------------------------------------------------18
Analog Voice Communication ---------------------------------------------------------------18
Force Receive -----------------------------------------------------------------------------------18
Data Communication ----------------------------------------------------------------------------- 18
Receive -------------------------------------------------------------------------------------------19
Transmit ------------------------------------------------------------------------------------------ 19
Digital Image Communication ------------------------------------------------------------------- 19
Receive -------------------------------------------------------------------------------------------19
Transmit ------------------------------------------------------------------------------------------20
Specifications --------------------------------------------------------------------------------------------21
Type of Communications and their respective features --------------------------------------22
Communication Selection Guidance --------------------------------------------------------------23
Communication Mode Setting -----------------------------------------------------------------------24
Detailed functions of communication mode ------------------------------------------------------25
Control Commands -------------------------------------------------------------------------------------28
Interfacing to a PC -----------------------------------------------------------------------------28
Terminal Settings -------------------------------------------------------------------------------28
Command format -------------------------------------------------------------------------------29
Entering the System Management Screen ----------------------------------------------29
Operator’s Command List --------------------------------------------------------------------30
Operator’s Command Details-----------------------------------------------------------------31
Command List for the System Manager --------------------------------------------------33
Command Details of the System Manager ----------------------------------------------34
5
Supplied Accessories
The following items are provided in the box:
Accessory Quantity
----------------------------------------------------------------
Microphone 1
PC interface cable 1
Speaker Cable 1
DC Power cable 1
Microphone Connector 1
Instruction manual 1
Controls and functions
Front Panel
DRA
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a. Power on/off switch
b. TX switch
There are two (2) functions with this switch.
1. Digital Image Communication mode
Set the mode switch to [10101] (digital mode). Press this switch to capture
and send an image.
Note: When the Video Through Function is activated (AVT command is ON),
pressing this switch will enable output of the video signal connected to the Video
Input to also be sent to the video output port, so that you can monitor the
transmitted video image.
Press this switch again to capture and send the image through the radio
equipment. When the Video Through Function is de-activated (AVT command is
OFF), pressing this switch will automatically capture the video image and then
transmit it through the radio equipment.
(Refer to: Operation -- Digital Image Communication at page 18 for details.)
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6
2. Digital Voice Communication mode (non encryption or fixed scramble code
mode)
Set the mode switch to [~] (analog mode). Press and hold this switch to
force the ARD9900 to decode digital voice signals.
Caution: Frequency tolerance for both parties must be in the range of +/-125 Hz.
(Refer to: Operations -- Digital Voice Communication force receive at page 17
for details.)
c. BUS LED (Busy LED)
Steady red
The unit is in the transmit mode
Flashing red
Flashes red while the header information is being sent, when in the digital
communication mode. (Approximately one second).
Green
The unit is in the receive mode
Not lit
The unit is in the standby receive mode or in the analog voice receive
mode.
d. STA LED (Status LED)
In the data communication mode, lit while unsent data is in the memory. It
displays orange when the Video Through Function is activated (Digital
Image Communication mode). When the Video Through Function is deactivated (AVT command is OFF), this LED will not be lit.
e. Speaker volume adjustment
Adjustment for the internal speaker output level (or the external speaker
output level when it is connected.)
f. MODE LED (Operation Mode LED)
Indicates the current operation mode:
Lit in green ----- Digital Voice mode
Lit in red ----- Analog Voice mode
Lit in orange ----- Data Communication mode
Not lit ----- Digital Image Communication mode
g. CHANNEL switch
Select preloaded encryption code.
(Refer to: Channel Switch Setting at page 15 for details.)
h. Overload indicator
Lit when the microphone input is overloaded (too high).
A proper microphone input level will cause the LED to flash from time to
time when speaking into the microphone at a normal level.
The microphone level can be adjusted with the microphone level controller.
(Refer to: Level Adjustment at page 13 for details.)
7
i. Mode switch
Select the Digital voice mode [10101] or the Analog voice mode [~].
When the Analog voice mode [~] is selected, ordinary analog voice
communications will be made. In the receive mode, however, the ARD9900
will automatically detect the mode of the incoming signal and decode signals
accordingly. The LED indicates the respective operation mode.
j. Microphone connector
Connect the supplied microphone to this connector.
Below are the pin assignments of the connector.
1. Speaker output -- Monitor output signal is present at this pin.
2. BIAS -- Power source for an electret condenser type of
microphone. 5V DC through 2.2KΩ resistor.
3. GND -- Chassis ground
4. TX -- Grounding this pin will enable the transmit
mode.
(Same operation as the TX switch on the front
panel.)
5. D/A -- Grounding this pin will force the unit to the
digital voice communication mode. When this pin is
left open, the operation mode will be set by the mode
switch on the front panel.
6. MIC PTT -- PTT (Push To Talk) input.
7. MIC GND -- Microphone ground signal
8. MIC IN -- Microphone signal input
Rear Panel
k. Communication Connector (mini DIN 8 pin) for PC (RS-232C)
Pin Number Signal Signal Direction
1 TX ARD9900 PC
2 DTR ARD9900 PC
3 DSR ARD9900 PC
4 GND GND
5 RX ARD9900 PC
6 RTS ARD9900 PC
7 CTS ARD9900 PC
8 NC No Connection
Shell FG Frame ground
AOR,LTD.
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VIDEO
IN OUT
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RADIO
OUT
SP
IN
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p q r
+-
DC IN
8
Baud Rate: 9600
Data bit: 8
Start bit: 1
Stop bit: 1
Parity: None
Synchronization: Asynchronous
Flow control: Hardware
l. VIDEO - IN connector (75Ω) (RCA type connector)
Connect a video signal source such as a digital camera.
m. VIDEO – OUT connector (75Ω) (RCA type connector)
Connect a video monitor to this connector to monitor a received image or a
picture to be sent.
n. RADIO Connector
Using the supplied 8 pin connector, connect the ARD9900 to your radio equipment.
You will need to wire a cable according to the microphone connector specifications
of your radio.
Below are the pin assignments of the connector on the ARD9900.
Pin number Signal Details
1 MIC GND Microphone ground
2 MIC OUT Microphone Output
3 PTT PTT (Push To Talk) output
4 GND PTT ground
5 NC No connection
6 NC No connection
7 GND Ground
8 NC No connection
(Caution: MIC GND and GND must not be connected together in the ARD9900
connector, or RF feedback will result.
o. SP IN Connector (3.5 mm mono jack)
Connect to the radio equipment’s external speaker jack.
(Input level: 0.5 V – 5 V p-p)
p. SP OUT Connector (3.5 mm mono jack)
Connect an external speaker to this jack to disable internal speaker.
q. DC IN Connector (EIAJ Type 4)
Connect to a regulated power supply. (10.7 ~ 16.0 V DC, Center pin – positive)
For lower voltage battery operation, set the internal jumper terminal for battery
operation, and then connect external batteries .
9
r. FG
Frame ground
Top Panel
Internal View
(PCB design subject
to changes.)
t.
Factory setting jumper
Must be set between 2-3. (Do not change this setting at any time.)
v. Battery operation selector
Place the jumper between 1 – 2 (NOR) for normal operation.
If you have changed the internal jumper for low-voltage battery operation,
(Caution: If you have changed the internal jumper for low-voltage battery operation,
battery voltage must be within the range of 5.6 ~6.5 VDC.
DO NOT apply 12.0V or severe damage will result, and the warranty will be
void!)
Note: No low battery voltage detector is built-in the ARD9900.
s
Internal Speaker
Change it between 2-3 (BATT) for battery operation.
battery voltage must be within the range of 5.6 ~6.5 VDC.
DO NOT apply 12.0V or severe damage will result, and the warranty will be
void!
(Note: No low battery voltage detector is built-in the ARD9900.)
10
w. Internal speaker setting
Jumper setting
1 – 2 Activates internal speaker (default)
2 – 3 Disable internal speaker
Speaker output is also available from the pin #1 of the
microphone connector.
(Note: The SP OUT (external speaker output) has priority regardless
of the above jumper setting.)
x. Output level setting
Jumper setting
1 – 2 Normal level (default) (LOW)
2 – 3 High level (HIGH)
In case the microphone output level is too low to drive your radio equipment,
place the jumper to the 2-3 position.
(Refer to: Microphone Level Adjustment at page 13 for details.)
Bottom View
y. Microphone output (Radio Input) level
(Refer to: Setting - Level Adjustment for Radio Input at 19 for details.)
y
11
Interfacing the ARD9900
Connection to a Radio
Before using your ARD9900, you will first need to wire the cable between your radio
equipment and the ARD9900.
For your convenience, an 8-pin of a microphone connector for the ARD9900 is included.
You will need to prepare, however, your own microphone connector for your radio
equipment.
Below are the pin assignments of the 8-pin RADIO connector on the rear panel of the
ARD9900.
Pin number Signal Details
1 MIC GND Microphone ground
2 MIC OUT Microphone output
3 PTT (H) PTT (Push To Talk) output
4 PTT (L) PTT (Push To Talk) ground
5 NC No connection
6 NC No connection
7 GND Ground
8 NC No connection
ARD9900
・RADIO Connector
1 MIC GND
2 MIC OUT
3 PTT(H)
4 PTT(L)
5 NC
6 NC
7 GND
8 NC
Shell
RADIO EQUIPMENT
MIC GND
MIC IN
PTT IN
PTT GND
GND
Shell
EXTERNAL SPEAKER OUT
GND
・SP IN Connector
Signal
GND
(Note: MIC GND and GND must not be connected together in the ARD9900 connector,
or RF feedback will result.)
Connection to a Microphone
A speaker microphone is included with your ARD9900. However, if you wish to use
your own microphone with the ARD9900, you may do so by wiring your microphone to
correlate with the input jack of the ARD9900. Below are the pin assignments of the
Microphone connector of the ARD9900.
1. Speaker output
Monitor output signal is present at this pin when the internal speaker
Jumper is set to 2 – 3.
2. BIAS
Power source for an electric condenser type of microphone. 5V DC
through 2.2KΩ resistor.
3. GND
Chassis ground
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