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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
(MHz)
1
4
8
10
16
20
25
31.25
62.5
100
Return-Loss Measurements for the Secondary Surge Protector (SP251A)
Freq.
Pins 1-2
(MHz)
1
4
8
10
16
20
25
31.25
62.5
100
APPENDIX B: EIA/TIA TSB-40A Compliance
Pins 3-6
(dB)
(dB)
27.4
27.6
37.3
38.0
40.8
42.3
39.6
40.0
37.0
34.0
35.0
30.8
34.5
24.4
35.0
23.5
24.2
28.7
19.0
27.0
Pins 3-6
(dB)
(dB)
27.3
27.6
38.2
37.2
42.0
40.4
41.4
38.6
38.8
32.7
37.0
28.4
34.9
25.2
35.0
22.0
27.0
25.3
21.5
25.0
Pins 4-5
Pins 7-8
(dB)
(dB)
28.4
28.0
49.0
42.5
37.8
38.7
35.7
35.4
32.3
33.0
31.0
31.6
29.8
30.4
30.0
30.5
22.0
22.5
18.3
19.0
Pins 4-5
Pins 7-8
(dB)
(dB)
28.5
28.0
48.6
42.4
39.4
30.4
36.4
38.6
33.4
35.3
31.8
33.4
30.7
32.2
31.4
33.0
24.0
25.0
19.8
21.8
SPEC
(dB)
23
23
23
23
23
23
14
14
14
14
SPEC
(dB)
23
23
23
23
23
23
14
14
14
14
17
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