ADTRAN NxT1 HSSI/V-35 installation instructions HSSI/V.35 SCSI-50 Pinout, Specifications

	For more detailed documentation, visit us online at www.adtran.com
NxT1 HSSI/V-35 MODULE	P/N 1200346L2
	HSSI/V.35 (SCSI-50) PINOUT

T1-1 T1-2 T1-3 T1-4

500 Series

		HSSI/V.35	PIN# (+ side)	PIN# (- side)	Direction	Description
			1	26	—	HSSI SG - Signal Ground
		Nx T1 HSSI/V.35	2	27	O	HSSI RT - Receive Timing
INSTALLATION INSTRUCTIONS			3	28	O	HSSI CA - DCE Available
			4	29	O	HSSI RD - Receive Data
1. Remove the cover plate from the appropriate option slot in the ATLAS			5	30	O	HSSI LC - Loopback Circuit C
			6	31	O	HSSI ST - Send Timing
	550 Base Unit.
			7	32	—	HSSI SG - Signal Ground
2. Slide the Nx T1 HSSI/V-35 Module into the option slot until the module
			8	33	I	HSSI TA - DTE Available
	is firmly positioned against the front of the chassis.		9	34	I	HSSI TT - Terminal Timing
3. Secure the thumbscrews at both edges of the module. Tighten with a			10	35	I	HSSI LA - Loopback Circuit A
	screwdriver.		11	36	I	HSSI SD - Send Data
4.	Connect the cables to the associated device(s).		12	37	I	HSSI LB - Loopback Circuit B
			13	38	—	HSSI SG - Signal Ground
5. Complete installation of remaining modules and Base Unit as specified
			—	39	—	Ancillary to DCE (Reserved)
	in the Installation chapter of the ATLAS 550 System Manual.		14	—	I	V.35 RTS - Request to Send
SPECIFICATIONS			15	40	I	V.35 TT Terminal Timing
			16	41	I	V.35 SD Send Data
HSSI Rate:		Up to 11.04 Mbps	—	42	O	V.35 DCD - Data Carrier Detect
			17-18	43	—	Ancillary to DCE (Reserved)
V.35 Rate:		Up to 5.52 Mbps
			19	44	—	HSSI SG - Signal Ground
T1 Links:		HSSI Interface – 1 to 8 Total T1 Links (up to 4 from module T1	20	45	O	V.35 ST - Send Timing
		interfaces and up to 4 from other T1 modules)	21	46	O	V.35 RT - Receive Timing
		V.35 Interface – 1 to 4 Total T1 Links (in any combination of	22	47	O	V.35 RD - Receive Data
		module T1 interfaces and other T1 modules)	23	—	O	V.35 CTS - Clear to Send
T1 Line Rate:		1.544 Mbps ± 75 bps	—	48	I	V.35 Ground/Present
T1 Line Framing:		D4 or ESF per ANSI t1.403 and AT&T TR 54016	24	49	O	HSSI TM - Test Mode
			25	50	—	HSSI SG - Signal Ground
T1 Testing:		Line or payload loopback (Local and Remote)
			T1 NETWORK CONNECTION PINOUT
Environmental:		Operating Temperature: 0ºC to 50ºC
		Storage Temperature: -40ºC to 70ºC	Pin	Name	Description
		Relative Humidity: 95% non-condensing	1	R1 RXDATA	Receive data from the network ring
Connectors:		T1 Interfaces: RJ-48C	2	T1 RXDATA	Receive data from the network tip
			3, 6, 7, 8	Unused	n/a
		HSSI Interface: 50 pin SCSI-II Female
			4	R TXDATA	Send data towards the network ring
			5	T TXDATA	Send data towards the network tip

Quick Start Guide, 61200346L2-13A, February 2002 Technical Support 1-888-4ADTRAN (1-888-423-8726) Copyright  2002 ADTRAN, All Rights Reserved