ADTRAN 239 H4R manual Card Edge PIN Assignments, Loopback and Control Codes

239 H4R	JOBAID
	61221445L1-22B
	0205

	239 H4R
	CLEI: T1R5YP3D_ _
	239 H4R
	1221445L1
-22B#
#61221445L1	LP1
	NET
	LP2
	LP1
	CUST
	LP2

STATUS LEDs

LP1/LP2 NET ● Off	No span power present
● Solid Green	Synchronized with an SNR margin greater than the user defined SNR
	Margin Alarm Threshold
✷ Fast Blinking	(Blinking 3 times per second) Attempting to synchronize with the
Green	H4TU-C

✷Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin

Green	greater than the user defined SNR Margin Alarm Threshold and the
	pulse attenuation is greater than the user defined Loop Attenuation
	Alarm Threshold
● Solid Yellow	Synchronized with an SNR margin greater than 0 dB but less than
	the user defined SNR Margin Alarm Threshold

✷Slow Blinking Synchronized with an SNR margin greater than 0 dB but less than the

Yellow	user defined SNR Margin Alarm Threshold and the pulse attenuation
	is greater than the user defined Loop Attenuation Alarm Threshold
● Solid Red	Synchronized with an SNR margin of 0 dB

✷Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin of 0 dB

Red	and the pulse attenuation is greater than the user defined Loop
	Attenuation Alarm Threshold
LP1/LP2 CUST ● Off	No span power present
● Solid Green	Synchronized with an SNR margin greater than the user defined SNR
	Margin Alarm Threshold

CARD EDGE PIN ASSIGNMENTS

Pin No.	Designation	Description	Pin No.	Designation	Description
1	GND	Ground	7	NC	No Connection
2	NC	No Connection	8	T	Network Loop 2 Tip
3	T1	Customer Loop 1 Tip	9	R	Network Loop 2 Ring
4	R1	Customer Loop 1 Ring	10	GND	Ground
5	T1	Network Loop 1 Tip	11	T	Customer Loop 2 Tip
6	R1	Network Loop 1 Ring	12	R	Customer Loop 2 Ring

LOOPBACK AND CONTROL CODES

Refer to the Installation and Maintenance Practice of the H4TU-C or H4TU-R used in the circuit for a list of loopback codes.

LL /RL

(Y) (G)

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

	✷ Fast Blinking	(Blinking 3 times per second) Attempting to synchronize with the
	Green	H4TU-R
	✷ Slow Blinking	(Blinking 1 time per second) Synchronized with an SNR margin
	Green	greater than the user defined SNR Margin Alarm Threshold and the
		pulse attenuation is greater than the user defined Loop Attenuation
		Alarm Threshold
	● Solid Yellow	Synchronized with an SNR margin greater than 0 dB but less than the
		user defined SNR Margin Alarm Threshold
	✷ Slow Blinking	Synchronized with an SNR margin greater than 0 dB but less than the
	Yellow	user defined SNR Margin Alarm Threshold and the pulse attenuation
		is greater than the user defined Loop Attenuation Alarm Threshold
	● Solid Red	Synchronized with an SNR margin of 0 dB
	✷ Slow Blinking	(Blinking 1 time per second) Synchronized with an SNR margin of 0 dB
	Red	and the pulse attenuation is greater than the user defined Loop
		Attenuation Alarm Threshold
LL/RL	● Green	Indicates a loopback at the H4R toward the H4TU-R is active
	● Yellow	Indicates a loopback at the H4R toward the H4TU-C is active
	✷ Blinking	Armed but not in loopback.
	Yellow

HANDLING PRECAUTIONS REQUIRED.

■ For a complete Installation and Maintenance Practice (P/N 61221445L1-5) faxback: (877) 457-5007, faxback Document 755. Please have your fax number ready. ■