Anritsu ML2430A operation manual RS232 Modem Support, Connected Device Character Sequence

PROCEDURES RS232 MODEM SUPPORT

Connected Device	Character Sequence
Computer connected directly	"+++at\r\rS\n"
Modem offline from phone network	modem status data followed by "S\n"
Sequence will be seen if remote connection
established
Modem connected through to remote com-	"+++S\n"
puter

GPIB/RS232 Modem The following table lists the GPIB/RS232 Modem Commands and the special se-

Commands rial interface only commands:

Command	Parameter	Definition
!BYE		RS232-type command only, allows the remote PC to
		instruct the power meter to tell its local modem to
		hang-up. This ensures that when communication is
		completed, the modems at both ends of the line can
		be disconnected and the telephone line released.
!DCL		RS232 type command only. Clears all buffered
		GPIB/RS232 messages waiting to be processed.
		Clears all buffered GPIB/RS232 data waiting to be
		output. Stops any pending actions.
!SPL		RS232 type command only. Allows a GPIB type se-
		rial poll to be requested in response to an SRQ from
		the power meter. This will return the instrument sta-
		tus register and clear the SRQ bit within that register.
		The *CLS command should be used to clear the rest
		of the register.
MODDEL	<value>	Modem redial delay time, 1 to 10 minutes (default =
		5 min.)
MODINIT		Initialize connected modem
MODLIM	<TRUEFALSE>	Autodial enable for limits failure
MODPH	<string>	Phone number - up to 40 characters
MODPWR	<TRUEFALSE>	Autodial enable for power on
MODRED	<value>	Modem redial count, 0 to 10 (default = 5)
MODRNG	<TRUEFALSE>	Autodial enable for range failure

The RS232-type commands (!BYE, !SPL and !DCL) do NOT require terminating. All other commands or command strings require a new line character to terminate.

Refer to Section 4-7, System Menu, for information on using the front panel menus to configure modem operation. Refer to Section 6-10, ML24XX Native GPIB Commands, for information on using GPIB commands to configure modem operation.

ML2430A OM 5-7