Card Type	T1 CSU
Chip Set	Unidentified
I/O options	Diagnostic ports
Maximum Transfer Rate	1.544Mbps
Data Bus	External
Data Modulation Protocol	B8ZS

CONNECTIONS
Function	Label	Function	Label
T1 line out	CN1	Test signal to network	CN8
Network line out	CN2	Test signal from equipment	CN9
RS-232/422	CN3	Monitor signal from equipment	CN10
DC power	CN4	Ground	SC1
Test signal to equipment	CN5	Test switch	SW1
Test signal from network	CN6	Alarm cut-off	SW2
Monitor signal from network	CN7

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Test signals not sent through pulse density circuits	SW5/1	On
	Test signals sent through pulse density circuits	SW5/1	Off
»	Force sending of digital ON after 15 OFF signals	SW5/2	Off
	Force sending of digital ON after 47 OFF signals	SW5/2	On
»	QRSS will not cause low pulse density error	SW5/3	On
	QRSS will cause low pulse density error three times every two seconds	SW5/3	Off
»	Pulse density monitor enabled	SW5/4	Off
	Pulse density monitor disabled	SW5/4	On
»	Use unframed keep-alive signal	SW5/5	On
	Use framed keep-alive signal	SW5/5	Off
»	Factory configured - do not alter	SW5/6	N/A
»	Factory configured - do not alter	SW5/7	N/A
»	Factory configured - do not alter	SW5/8	N/A

SIGNAL ATTENUATION
Setting	SW3	SW4
0dBm	On	On
-7.5dBm	On	Off
-15dBm	Off	On
-22.5dBm	Off	Off

POWER SOURCE
Setting	JP1
Local power	Up
Line power	Down

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
LOC LP	Yellow	On	CSU is in local loopback test mode
LOC LP	Yellow	Off	CSU is not in local loopback test mode
CODE	Yellow	On	CSU received a reset signal
CODE	Yellow	Off	CSU did not receive a reset signal
NET LP	Yellow	On	Remote CSU is in loopback test mode
NET LP	Yellow	Off	Remote CSU is not in loopback test mode
SEND/FEL	Yellow	On	CSU is transmitting a reset signal
SEND/FEL	Yellow	Off	CSU is not transmitting a reset signal
SEND/FEL	Yellow	Blinking	CSU is in remote loopback test mode
PWR	Green	On	Power is on
PWR	Green	Off	Power is off
ACO	Green	On	An alarm has occurred but has been silenced
ACO	Green	Off	No alarm has occurred or the alarm is active
KA	Red	On	CSU is sending a keep-alive signal
KA	Red	Off	CSU is not sending a keep-alive signal
LOS	Red	On	Signal not detected
LOS	Red	Off	Signal detected
AIS	Red	On	CSU is receiving a keep-alive signal
AIS	Red	Off	CSU is not receiving a keep-alive signal
BPV	Red	On	CSU has detected bipolar variations
BPV	Red	Off	CSU has not detected bipolar variations
BPV	Red	Blinking	CSU has detected bipolar variations