Black Box SP250A, SP251A manual Hardware

			APPENDIX B: EIA/TIA TSB-40A Compliance
5Primaryand			Protectorshvebeendesignedtoconformto
stringentEIA/TIATSB-40AstanardsasrequiredforallCategory5				hardware.
Thesestandrdsspecifycapacitanceandnar-endrosstalk(NEXT)limitstohelpensure
Appendix B: EIA/TIA TSB-40A
			Compliance
operationpagesof.	all	connectedSecondaryquipmntSurge.Specifictestresultsareconnectingshown thetableson
thepropfollowingCategory

Table B-1. Results of TSB-40A Compliance Testing, Part 1:

Typical Near-End Crosstalk Measurements

NEXT Measurements for the Primary Surge Protector (SP250A)

			SOURCE/VICTIM PAIRS
Freq.	1-2/3-6	1-2/4-5	1-2/7-8	3-6/4-5	3-6/7-8	4-5/7-8	SPEC
(MHz)	(dB)	(dB)	(dB)	(dB)	(dB)	(dB)	(dB)
1	>80	>80	>80	>80	>80	>80	>65
4	78	71.0	>80	75.0	73.0	77.0	>65
8	75	66.0	>80	70.0	77.0	66.0	62
10	70	63.0	>80	68.0	74.0	69.0	60
16	66	59.3	>80	64.0	80.0	72.0	56
20	65	57.6	>80	62.0	>80	66.0	54
25	64	56.0	>80	60.0	71.0	63.0	52
31.25	62	54.0	>80	58.0	66.0	61.0	50
62.5	54	48.6	80.0	51.0	60.0	58.0	44
100	48	52.0	59.0	45.0	56.0	43.0	40

NEXT Measurements for the Secondary Surge Protector (SP251A)

			SOURCE/VICTIM PAIRS
Freq.	1-2/3-6	1-2/4-5	1-2/7-8	3-6/4-5	3-6/7-8	4-5/7-8	SPEC
(MHz)	(dB)	(dB)	(dB)	(dB)	(dB)	(dB)	(dB)
1	>80	>80	>80	>80	>80	>80	>65
4	77	74.0	>80	73.0	>80	74.0	>65
8	73	63.0	>80	68.0	75	69.0	62
10	67	67.3	>80	62.0	68.9	66.0	60
16	65	69.0	>80	58.0	68	62.0	56
20	64	63.0	>80	57.0	72	61.0	54
25	62	61.0	75.0	56.5	64	62.4	52
31.25	59	61.0	77.0	54.0	62	57.0	50
62.5	53	59.3	77.0	49.0	54.7	50.0	44
100	64	52.0	69.0	45.4	51	46.0	40

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