Card Type	E1 Modem
Chip Set	Unidentified
I/O Options	AC power connector, 15-pin DTE connector, BNC network connectors (2), RJ-45 network connector
Maximum Data Rate	2.048Mbps
Data Bus	External

CONNECTIONS
Function		Label		Function		Label
Power connector	CN1		RJ-45 120Ohm twisted pair connector		CN4
X.21 DTE port (15pin connector)	CN2		BNC 75Ohm coaxial connector		CN5
BNC 75Ohm coaxial connector	CN3		Power switch		SW3

USER CONFIGURABLE SETTINGS
Setting	Label	Position
í 75Ohm transmit shield to ground	LK1	Closed
120Ohm transmit shield to ground	LK1	Open
í 75Ohm receive shield to ground connection broken	LK2	Open
75Ohm receive shield to ground made	LK2	Closed (optional)
í Factory configured - do not alter	LK3	Open
í 1200Ohm shield to ground broken	LK4	Open
120Ohm shield to ground made	LK4	Closed (optional)
í Auto-sense enabled	LK5	Closed
Auto-sense disabled	LK5	Open
í Device is master (clock generated internally)	S1/1	On
Device is slave. (clock recovered from network)	S1/1	Off
í Loopback activated by front panel	S1/4	Off
Continual loopback mode enabled	S1/4	On
í Data inversion disabled	S1/5	Off
Data inversion enabled	S1/5	On
í Factory configured - do not alter	S1/6	Off
í Factory configured - do not alter	S1/7	Off
í Factory configured - do not alter	S1/8	Off
Loopback test activated	SW2	On
Normal mode. Loopback test not activated	SW2	Off

LINE IMPEDANCE
Setting	LK6	LK7
75Ohm operation	Closed	Closed
120Ohm operation	Open	Open

RATE ADAPTATION
Setting	S1/2	S1/3
256Kbps	On	On
512Kbps	Off	On
1.024Mbps	On	Off
í 2.048Mbps	Off	Off

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
PWR	Red	On	Power is on
PWR	Red	Off	Power is off
NET	Green	On	Network connection is good
NET	Green	Off	Network connection is broken
MCL	Green	On	Device is configured as a master clock unit
MCL	Green	Off	Device is configured as a slave unit
LOOP	Green	On	Device is conducting a loopback test
LOOP	Green	Off	Device is not conducting a loopback test