Specifications

Version C15. February 2013 Raveon Technologies Corporation

Company Confidential

If the RV-M7 GX is used as a GPS transponder (GPS 1 mode), the serial port need

not be connected to anything. The internal GPS will initiate the transmissions of

position and status.

There is also a “Command Mode” used to program and configure the RV-M7 GX.

In the Command Mode, the RV-M7 GX modem accepts commands via the serial

port TxD pin. The commands can be used to change certain internal parameters of

the RV-M7 GX modem as well as to read-out the current configuration and

diagnostic statistics.

5.2. Command Mode

The RV-M7 GX modem may be put into a “Command Mode”, by entering a

sequence of three plus characters (+++). To keep the RV-M7 modem from

unintentionally entering the Command Mode because of the +++ pattern occurring

in a stream of data entering the modem, there must be a pause in the data stream

before the +++ as well as a pause after the +++ is sent. If either pause is missing,

the modem will not enter the command mode.

Using serial communications software such as HypterTerminal, send the 3-

character command sequence “+++”.

When the RV-M7 GX modem first enters the Command Mode, it sends the phrase

“RV-M7” out it serial port, and then an “OK” sequence. The “OK” sequence is a

sequence of 4 characters:

“O”, “K”, <CR>, and <LF> characters (<CR> = ASCII 0D, <LF> = ASCII 0A)

5.3. Password Protection

One M7 series products with firmware version C0 or higher, the user interface may

be password protected. If it is password protected, the radio will output a

“password:” prompt when entering the command mode.

When in the command mode, to enable the use of a password enter:

Password xxxx <CR>

Where xxxx is the 2-7 digit password you would like to protect the user interface

with.

To disable password protection, enter:

Password 0 <CR>

Note: If the user-interface is password protected, and the Config button on the M7

is pressed, for security reasons, the encryption phrase is automatically erased.

5.4. Setting a Parameter

To set a parameter in the RV-M7 GX modem, enter the Command Mode as

described above. Then enter the proper command, a space, the parameter, and

then a carriage return. For Example, to set the destination address of the RV-M7

GX modem to 1234, enter the following command: