Specifications

RV-M7 Technical Manual

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 “+++” while observing times of silence before [BT (Silence Before Sequence) Command]

and after [AT (Silence After Sequence) Command] the command characters. The default BT and AT

times are 500mS.

The default sequence for entering into AT Command Mode:

1. No characters sent for ½ a second.

2. Input three (3) plus characters (“+++”) within ½ of a second.

3. No characters sent for ½ a second.

When the M7 modem first enters the Command Mode, it sends the phrase “M7” out it serial port, and

then an “OK” sequence. The “OK” sequence is a sequence of 4 characters:

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

5.3 Setting a Parameter

To set a parameter in the M7 modem, enter the Command Mode as described above. Then enter the

proper AT command, a space, the parameter, and then a carriage return. For Example, to set the

address of the M7 modem to 1234, enter the following command:

ATDT 1234 <CR>.