Card Type	Modem (synchronous/asynchronous)
Chipset	Unidentified
Wire Type	Fiber optic cable
Maximum Data Rate	19.2Kbps x 2
Data Modulation	Unidentified
Data Bus	Proprietary

CONNECTIONS
Function	Label	Function	Label
Serial data port	CN1	Fiber optic ST receive cable	CN3
Fiber optic ST transmit cable	CN2	Loopback test switch	SW4

USER CONFIGURABLE SETTINGS
Setting	Label	Position
í Stop bit shortening for asynchronous mode set to 12.5%	SW1/1	Off
Stop bit shortening for asynchronous mode set to 25%	SW1/1	On
í DCD forced high	SW1/4	On
DCD follows RTS	SW1/4	Off
í Pin 18 of CN1 has no function	SW1/5	Off
Pin 18 of CN1 begins local analog loopback test	SW1/5	On
í Pin 21 of CN1 has no function	SW1/6	Off
Pin 21 of CN1 begins remote digital loopback test	SW1/6	On
í CN1 is DCE	SW3	Off
CN1 is DTE	SW3	On

TRANSMIT CLOCK SOURCE SELECTION
Setting	JP2/A	JP2/B	JP2/C	JP2/D
í Internal	Closed	Open	Open	Open
External	Open	Closed	Open	Open
Received	Open	Open	Closed	Open
Asynchronous mode	Open	Open	Open	Closed

RTS TO CTS DELAY SELECTION
Setting	JP3/A	JP3/B	JP3/C
0 mS	Closed	Open	Open
8 mS	Open	Closed	Open
68 mS	Open	Open	Closed

DATA LENGTH SELECTION
Setting	SW1/2	SW1/3
8 bits	Off	Off
9 bits	Off	On
í 10 bits	On	Off
11 bits	On	On

LINE SPEED SELECTION
Setting	SW2
1200bps	Position 7
2400bps	Position 6
3600bps	Position 5
4800bps	Position 4
7200bps	Position 3
í 9600bps	Position 2
14.4Kbps	Position 1
19.2Kbps	Position 0

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
PWR	Green	On	Power is on
PWR	Green	Off	Power is off
XMT	Yellow	On	Modem is transmitting data
XMT	Yellow	Off	Modem is not transmitting data
RCV	Yellow	On	Modem is receiving data
RCV	Yellow	Off	Modem is not receiving data
DCD	Yellow	On	Carrier signal detected
DCD	Yellow	Off	Carrier signal not detected
TST	Red	On	Modem is in test mode
TST	Red	Off	Modem is not in test mode

MISCELLANEOUS TECHNICAL NOTE

This card is intended for use in the CMN-16 rack-mount system. The bus is used only for supplying power for the card. All other card functions are accessed through the serial ports.