NIC Type	Proprietary
Chipset	Systran Corporation
Maximum Onboard Memory	8MB DRAM
I/O Options	Bypass connector
Network Transfer Rate	150Mbps
Data Bus	VME
Topology	Linear Bus/Ring
Wire Type	RG-58A/U 50ohm coaxial Fiber optic cable
Boot ROM	Not available

CONNECTIONS
Function	Label	Function	Label
Auxiliary connector (see pinout below)	J1	Fiber optic ST receive connector 1	W1B
Auxiliary connector (see pinout below)	J2	RG-58A/U 50ohm coaxial receive connector 2	W2A
Bypass connector	J301	Fiber optic ST receive connector 2	W2B
Daughterboard header	J302	RG-58A/U 50ohm coaxial transmit connector 1	W3A
Memory card header	J305	Fiber optic ST transmit connector 1	W3B
RG-58A/U 50ohm coaxial receive connector 1	W1A	RG-58A/U 50ohm coaxial transmit connector 2	W4A
Fiber optic ST transmit connector 2	W4B	Header to main board J302	W5B
Header to main board J302	W5A	Header to main board J302	W5C

J1 PINOUT
Function	Pin	Function	Pin
Not used	1	External LED (see LED2 in table)	3
External LED (see LED1 in table)	2	Signal common	4

J2 PINOUT
Function	Pin	Function	Pin
Not used	1	External LED (see LED3 in table)	3
Message waiting signal	2	Signal common	4

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Chassis ground connected to signal ground	J3	Pins 2 & 4 closed
	Chassis ground not connected to signal ground	J3	Pins 1 & 3 closed
»	EEPROM write protect enabled	J303	Pins 1 & 3 closed
	EEPROM write protect disabled	J303	Pins 2 & 4 closed
»	EEPROM read protect enabled	J304	Pins 1 & 3 closed
	EEPROM read protect disabled	J304	Pins 2 & 4 closed
»	Variable length packets disabled	J4	Pins 1 & 3 closed
	Variable length packets enabled	J4	Pins 2 & 4 closed
»	Card is not software compatible with ScramNET Classic cards	J5	Pins 1 & 3 closed
	Card is software compatible with ScramNET Classic cards	J5	Pins 2 & 4 closed
»	Control/Status register addressing is 16 bits wide	S6	Position 6
	Control/Status register addressing is 24 bits wide	S6	Position A

CONTROL/STATUS REGISTER ADDRESS SELECTION

A total of 262,144 address settings are available. Switches S1 through S5 set the hexadecimal memory address. SW1 is the Most Significant Nibble and switch SW5 is the Least Significant Nibble, though the bottom two bits of SW5 are always 0. The switches have the following decimal weight values: SW1=1,048,576, SW2=65,536, SW3=4,096, SW4=256, SW5=16. Set the switches, multiply the number on the switch by its weight value, add the values obtained for each switch, and round down to the nearest multiple of 64 to obtain the correct memory address.

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
LED1	Green	On	Network connection is good
LED1	Green	Off	Network connection is broken
LED2	Green	On	Carrier signal is detected
LED2	Green	Off	Carrier signal is not detected
LED3	N/A	On	Error condition detected
LED3	N/A	Off	Error condition not detected
Note:LED3 is only available via connector J2.