US ROBOTICS 1200

US ROBOTICS 1200

CONNECTIONS
Purpose	Location	Purpose	Location
Line out	CN1	Power	CN4
Line in	CN2	Volume	SW3
RS-232/422	CN3	Power	SW2

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
LED1	Red	On	Analog loopback self test mode
LED1	Green	On	Data mode
LED2	Red	Blinking	Modem is transmitting/receiving data
LED2	Green	On	Carrier signal detected

DTR SIGNAL
Setting	SW1/1
» On	DTR forced high
Off	DTR normal

RESULT CODES
Setting	SW1/2
» Verbose result codes enabled	On
Numeric result codes enabled	Off

RESULT CODES DISPLAY
Setting	SW1/3
» Display enabled	On
Display disabled	Off

ECHO COMMANDS DISPLAY
Setting	SW1/4
» Local echo enabled	Off
Local echo disabled	On

AUTO ANSWER
Setting	SW1/5
» Modem doe not answer on first ring	On
Modem answers on first ring	Off

CARRIER DETECT
Setting	SW1/6
» CD normal	Off
CD forced high	On

MULT-LINE INSTALLATION
Setting	SW1/7
» Single phone connected	Off
Multiple phones connected	On

AT COMMAND SET
Setting	SW1/8
» AT command set recognized	On
AT command set disabled	Off

ANALOG LOOPBACK SELF TEST
Type:	Register
Format:	AT [cmds] S16=n [cmds]
Example:	ATS16=139<CR>
Description:	Selects the tone dialing test
Command	Function
0	Data mode.
1	Analog loopback.