Maxon Telecom MM-6854, MM-6864 manual Connections, 1 9 pin D-type RS-232 Interface, 2 25 pin D-type

MM6854/64 Dual Band GSM Data Modem

7.7 Connections

7.7.1 9 pin D-type (RS-232 Interface)

	Pin	Function
	1	DCD
	2	TXD
	3	RXD
	4	DTR
	5	GND
	6	DSR
	7	RTS
	8	CTS
	9	RI
		Table 7-1 - 9 pin D-type socket connections
7.7.2 25 pin D-type
	Pin	Function
	1	GND
	2	Software update supply 5.2 to 7.2V
	3	Software update programming voltage 0 – 5.2V
	4	Software update serial data Rx 0 – 3 V
	5	Software update serial data Tx 0 – 3 V
	6	Reserved for future use
	7	Reserved for future use
	8	Reserved for future use
	9	Reserved for future use
	10	GND
	11	Reserved for future use
	12	Reserved for future use
	13	GND
	14	GND
	15	Ignition (active low)
	16	Power Supply (+9 to +28VDC)
	17	Power Supply GND
	18	Reserved for future use
	19	Reserved for future use
	20	Reserved for future use
	21	Reserved for future use
	22	Reserved for future use
	23	Reserved for future use
	24	Reserved for future use
	25	Reserved for future use

Table 7-2 - 25 pin D-type plug connections

7.8 Summary

This section has briefly covered the installation of the MM-6854 data modem.

Issue 1.0	ME 820047
03/00	Page 41