Black Box SP250A, SP251A manual Appendix B EIA/TIA TSB-40A Compliance

APPENDIX B: EIA/TIA TSB-40A Compliance

Table B-3. Results of TSB-40A Compliance Testing, Part 3:

Typical Return-Loss Measurements

Return-Loss Measurements for the Primary Surge Protector (SP250A)

Freq.	Pins 1-2	Pins 3-6	Pins 4-5	Pins 7-8	SPEC
(MHz)	(dB)	(dB)	(dB)	(dB)	(dB)
1	27.4	27.6	28.4	28.0	23
4	37.3	38.0	49.0	42.5	23
8	40.8	42.3	37.8	38.7	23
10	39.6	40.0	35.7	35.4	23
16	37.0	34.0	32.3	33.0	23
20	35.0	30.8	31.0	31.6	23
25	34.5	24.4	29.8	30.4	14
31.25	35.0	23.5	30.0	30.5	14
62.5	24.2	28.7	22.0	22.5	14
100	19.0	27.0	18.3	19.0	14

Return-Loss Measurements for the Secondary Surge Protector (SP251A)

Freq.	Pins 1-2	Pins 3-6	Pins 4-5	Pins 7-8	SPEC
(MHz)	(dB)	(dB)	(dB)	(dB)	(dB)
1	27.3	27.6	28.5	28.0	23
4	38.2	37.2	48.6	42.4	23
8	42.0	40.4	39.4	30.4	23
10	41.4	38.6	36.4	38.6	23
16	38.8	32.7	33.4	35.3	23
20	37.0	28.4	31.8	33.4	23
25	34.9	25.2	30.7	32.2	14
31.25	35.0	22.0	31.4	33.0	14
62.5	27.0	25.3	24.0	25.0	14
100	21.5	25.0	19.8	21.8	14

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