Card Type	T3 or E3 CSU/DSU
Chipset	Unidentified
Wire Type	Fiber optic cable
Transfer Rate	34.368Mbps (FOM-E3) or 44.736Mbps (FOM-T3)
Protocol	B8ZS, HDB3
Frame Type	Unidentified
Data Bus	N/A

CONNECTIONS
Function	Label	Function	Label
T1 signal in via 75ohm coaxial cable connector	CN1	T1 fiber optic transmit ST connector	CN4
T1 signal out via 75ohm coaxial cable connector	CN2	Alarm signal connector	CN5
T1 fiber optic receive ST connector	CN3	AC power in	CN6

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Signal ground connected to chassis ground	JP3	Pins 1 & 2 closed
	Signal ground not connected to chassis ground	JP3	Pins 2 & 3 closed
»	Coaxial cable length may be up to 225 feet	JP5	Pins 1 & 2 closed
	Coaxial cable length may be up to 450 feet	JP5	Pins 2 & 3 closed
»	Device will transmit All Ones Signal when major alarm is detected	JP8	Pins 1 & 2 closed
	Device will transmit nothing when major alarm is detected	JP8	Pins 2 & 3 closed

TEST MODE
Setting		SW4
»	Normal operation	Position 2
	Local loopback test	Position 1
	Remote loopback test	Position 3

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
PWR	Green	On	Power is on
PWR	Green	Off	Power is off
LOC	Yellow	On	Device is in local loopback test mode
LOC	Yellow	Off	Device is not in local loopback test mode
REM	Yellow	On	Device is in remote loopback test mode
REM	Yellow	Off	Device is not in remote loopback test mode
LOW	Red	On	Electrical input signal is below valid signal level
LOW	Red	Off	Electrical input signal is within valid signal levels
AIS1	Yellow	On	All Ones Signal received on electrical interface
AIS1	Yellow	Off	All Ones Signal not received on electrical interface
ERR	Red	On	Bit Error Rate of optical interface is 10 -6 or worse
ERR	Red	Off	Bit Error Rate of optical interface is better than 10 -6
AIS2	Yellow	On	All Ones Signal received on fiber optic interface
AIS2	Yellow	Off	All Ones Signal not received on fiber optic interface