RS232 Modem Support Procedures
6-8 PN: 10585-00001 Rev. P ML2437A/38A OM/PM
The response from an ML2438A operating in native mode will be:
RANRITSU,ML2438A,<serial number>,<firmware version>
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:
5. Disconnect from power meter and wait for limit failure:
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
termination 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.
LLIM 1,-12DBM Sets low limit on channel 1 to -12dBm
LLIMS 1,ON Turn low limit testing ON for channel 1
MODLIM ON Set meter to autodial when any limits fail
MODPH <phone
number>
Set phone number to be auto-dialed
MODRED 3 Set redial count to 3
MODDEL 2 Set delay between each attempt to dial to 2 min.
!BYE Instruct power meter to hang-up its modem
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