RS232 MODEM SUPPORT

PROCEDURES

 

 

Modem Compatibility and The ML2430A Series Power Meter firmware supports Hayes-compatible mo- Commands dems. The commands used are as follows:

Command

Definition

 

 

+++

modem escape sequence

 

 

atz

reset modem to factory defaults

 

 

at&h1&r2x4v1q0f1s0=1e0

initialize modem for power meter use

 

 

atd”number”

dial “number”

 

 

Serial Interface This section presents an example of Autodial using a terminal emulator on a re-

Remote Operation mote computer ( \n = newline, \r = carriage return).

Example

1.Initialize local modem, using the same setup as the power meter:

at&h1&r2x4v1q0f1s0=1e0\r

&h1

transmit data flow control - use CTS

&r2

receive data flow control - use RTS

x4

full result code setting

v1

result codes in verbal mode

q0

result codes displayed

f1

local data echo OFF

s0=1

auto answer after 1 ring

e0

local command echo off

The modem should respond:

OK\n\r

2.Dial power meter:

atd<phone number>\r

When the modem finally connects to the power meter modem, the response will be:

CONNECT\n\r

There might be additional information after “CONNECT” but before the line termination characters.

3.The remote computer is now connected to the power meter. The power meter can now be asked to identify itself:

*IDN?\n

The response from an ML2438A operating in native mode will be:

RANRITSU,ML2438A,<serial number>,<firmware version>

5-8

ML2430A OM

 

 

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Anritsu ML2430A operation manual Example, Command Definition