PROCEDURES

RS232 MODEM SUPPORT

4.To set a limit for channel 1 and to have the power meter autodial a remote computer when this limit fails, send the following sequence:

LLIM 1,-12DBM LLIMS 1,ON

MODLIM ON

MODPH <phone number>

MODRED 3

MODDEL 2

Sets low limit on channel 1 to -12dBm Turn low limit testing ON for channel 1 Set meter to autodial when any limits fail Set phone number to be auto-dialed Set redial count to 3

Set delay between each attempt to dial to 2 min.

5. Disconnect from power meter and wait for limit failure:

!BYE

Instruct power meter to hang-up its modem

Wait at least 1 second.

+++

wait at least another second.

The local modem will now respond:

OK\n\r

The local modem can now be told to hang up using the command:

ATH0\r

Again the local modem will respond

OK\n\r

6.When a limits failure occurs, the power meter will instruct its modem to dial the previously set up phone number. As the connection is being established through to the remote computer, a sequence of status messages will be reported by the modem to the computer, ending with a final message of:

CONNECT\n\r

There might be additional information after “CONNECT” but before the line termi- nation characters.

7.After connection has been established, the power meter will send an SRQ to the remote computer. The SRQ message is:

S\n

To determine what has caused the SRQ, the status register in the power meter must be read. The status register in the meter is an 8-bit register. There are two ways to do this.

ML2430A OM

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Anritsu ML2430A operation manual Disconnect from power meter and wait for limit failure