MA-21DC modem/telephone/ISDN Settings and Configuration

Card Type	Modem (asynchronous)
Chip Set	Unidentified
I/O Options	DC power, RS-232-C, 20 mA current loop via 5-pin terminal block
Maximum Modem Rate	19.2Kbps
Data Modulation Protocol	C/CCITT V.24/V.28
Error Correction/Compression	Unidentified
Data Bus	External

CONNECTIONS
Function	Label	Function	Label
Power connector (terminal block)	CN1	RS-232-C port	CN3
Terminal block	CN2

USER CONFIGURABLE SETTINGS
Function	Label	Position
? 115V AC enabled	S5	On
230V AC enabled	S5	Off

TRANSMITTED SIGNAL SELECTION
Setting	S1/1	S1/2	S1/3	S1/4
?? TD pin 2	On	Off	Off	Off
AUX pin 11	Off	On	Off	Off
SRS pin 19	Off	Off	On	Off
DTR pin 20	Off	Off	Off	On

CTS CONRTOL SELECTION
Setting	S1/5	S1/6	S1/7	S1/8	S1/9
? RTS	On	Off	On	On	Off
RD	Off	On	Off	On	Off
Always High	On	Off	Off	On	On

TRANSMITTER/RECEIVER SELECTION
Transmitter Setting	Receiver Setting	S2/1	S2/2	S2/3	S2/4
? Normal	Normal	On	Off	On	Off
Inverted	Normal	Off	On	On	Off
Normal	Inverted	On	Off	Off	On
Inverted	Inverted	Off	On	Off	On

RECEIVER ACTIVE/PASSIVE SELECTION
Setting	S3/1	S3/2	S3/3	S3/4	S3/5	S3/6
? Passive	On	On	Off	Off	Off	Off
Active	Off	Off	On	On	On	On

TRANSMITTER ACTIVE/PASSIVE SELECTION
Setting	S4/1	S4/2	S4/3	S4/4	S4/5	S4/6
? Passive	On	On	Off	Off	Off	Off
Active	Off	Off	On	On	On	On

*DIAGNOSTIC LED(S)
LED	Color	Status	Condition
LED1	Unidentified	On	Power is on
LED1	Unidentified	Off	Power is off
LED2	Unidentified	On	Data is being transmitted
LED2	Unidentified	Off	Data is not being transmitted
LED3	Unidentified	On	Data is being received
LED3	Unidentified	Off	Data is not being received