HDMI 1.4 眼图与高频报告分析求教. - 无图版电线电缆网DXDLW

电线电缆网 > 数据高频线缆 > HDMI 1.4 眼图与高频报告分析求教.（完整版）

HDMI 1.4 眼图与高频报告分析求教. - 无图版

IJXXIADX --- 2012-04-18 11:28:45
1

Dear all

前兩天我做了款成品HDMI 1.4 TYPE A 3m ,raw and nonnector 都是自己做的,盡然測試眼圖沒有過??? 貴司能過幾米?

測試raw的特性阻抗是ok的,5P都在100-105之間.

報告見后面

IJXXIADX --- 2012-04-18 11:30:43
2

	Parameter:			NA_Attenuation	Unit : dB/Cable	Result:	Pass
Start Freq	10	825	2475	4125				Pair
End Freq	825	2475	4125	5100				Status
Spec Max	--	--	--	--				↓
Pair 1	-4.501	-8.162	-12.05	-20.1				Pass
Pair 2	-4.663	-8.215	-13.38	-18.4				Pass
Spec Min	-5	-12	-20	-25
Worst Pair	Pair 2	Pair 2	Pair 2	Pair 1
Worst Freq	809.68	2294.8	3805.3	4693.8

IJXXIADX --- 2012-04-18 11:31:10
3

Parameter:

NA_NEXT

Unit : dB

Result:

Pass

Start Freq

Pair

End Freq

5000

Status

Spec Max

-26

↓

P 1-2

-37.16

Pass

Spec Min

Worst Pair

P 1-2

Worst Freq

4900.5

IJXXIADX --- 2012-04-18 11:31:52
4

Parameter:		TDR_CommonModeIMPZ		Unit : Ohm		Result:	Pass
Pair Name	Spec Max	Spec Min	Max Value	Min Value	Differ.	Average	Status
Pair 1	40	25	32.36	26.57	5.79	29.465	Pass
Pair 2	40	25	33.89	27.88	6.01	30.885	Pass

Parameter:		TDR_DifferialIMPZ		Unit : Ohm		Result:	Fail
Pair Name	Spec Max	Spec Min	Max Value	Min Value	Differ.	Average	Status
Pair 1	110	90	100.68	77.47	23.21	89.075	Fail
Pair 2	110	90	102.12	84.13	17.99	93.125	Fail

IJXXIADX --- 2012-04-18 11:33:25
5

Parameter:

TDR_ConnectorIMPZ

Unit : Ohm

Result:

Fail

Pair Name

Spec Max

Spec Min

Node 1

Node 2

Differ.

Average

Status

Pair 1

115

101.14

77.41

23.73

89.275

Fail

Pair 2

115

100.5

84.05

16.45

92.275

Fail

Parameter:

TDR_FE_ConnectorIMPZ

Unit : Ohm

Result:

Fail

Pair Name

Spec Max

Spec Min

Max Value

Min Value

Differ.

Average

Status

Pair 1

115

101.13

79.75

21.38

90.44

Fail

Pair 2

115

99.64

79.57

20.07

89.605

Fail

Parameter:

TDT_IntraPairSkew

Unit : ps

Result:

Pass

Pair Name

Spec Max

Spec Min

Skew Val.

Status

Pair 1

112

Pass

Pair 2

112

Pass

IJXXIADX --- 2012-04-18 11:35:13
6

	Parameter:			NA_Attenuation	Unit : dB/Cable	Result:	Pass
Start Freq	10	825	2475	4125				Pair
End Freq	825	2475	4125	5100				Status
Spec Max	--	--	--	--				↓
Pair 1	-4.563	-8.336	-12.46	-19.42				Pass
Pair 2	-4.647	-8.193	-12.44	-17.36				Pass
Spec Min	-5	-12	-20	-25
Worst Pair	Pair 2	Pair 1	Pair 1	Pair 1
Worst Freq	771.6	2307.5	3767.2	4719.2

IJXXIADX --- 2012-04-18 11:36:21
7

Parameter:

NA_NEXT

Unit : dB

Result:

Pass

Start Freq

Pair

End Freq

5000

Status

Spec Max

-26

↓

P 1-2

-28.75

Pass

Spec Min

Worst Pair

P 1-2

Worst Freq

1677.5

IJXXIADX --- 2012-04-18 11:37:36
8

Parameter:		TDR_CommonModeIMPZ		Unit : Ohm		Result:	Fail
Pair Name	Spec Max	Spec Min	Max Value	Min Value	Differ.	Average	Status
Pair 1	40	25	40.86	35.12	5.74	37.99	Fail
Pair 2	40	25	32.13	26.7	5.43	29.415	Pass

Parameter:		TDR_DifferialIMPZ		Unit : Ohm		Result:	Fail
Pair Name	Spec Max	Spec Min	Max Value	Min Value	Differ.	Average	Status
Pair 1	110	90	98.75	83.83	14.92	91.29	Fail
Pair 2	110	90	98.57	83.13	15.44	90.85	Fail

Parameter:		TDR_ConnectorIMPZ		Unit : Ohm		Result:	Fail
Pair Name	Spec Max	Spec Min	Node 1	Node 2	Differ.	Average	Status
Pair 1	115	85	99.09	83.89	15.2	91.49	Fail
Pair 2	115	85	99	83.11	15.89	91.055	Fail

IJXXIADX --- 2012-04-18 11:39:07
9

Parameter:

TDR_FE_ConnectorIMPZ

Unit : Ohm

Result:

Fail

Pair Name

Spec Max

Spec Min

Max Value

Min Value

Differ.

Average

Status

Pair 1

115

97.98

82.86

15.12

90.42

Fail

Pair 2

115

98.78

82.42

16.36

90.6

Fail

Parameter:

TDT_IntraPairSkew

Unit : ps

Result:

Pass

Pair Name

Spec Max

Spec Min

Skew Val.

Status

Pair 1

112

Pass

Pair 2

112

Pass

IJXXIADX --- 2012-04-18 11:40:34
10

Parameter:

TDR_FE_ConnectorIMPZ

Unit : Ohm

Result:

Fail

Pair Name

Spec Max

Spec Min

Max Value

Min Value

Differ.

Average

Status

Pair 1

115

97.98

82.86

15.12

90.42

Fail

Pair 2

115

98.78

82.42

16.36

90.6

Fail

Parameter:

TDT_IntraPairSkew

Unit : ps

Result:

Pass

Pair Name

Spec Max

Spec Min

Skew Val.

Status

Pair 1

112

Pass

Pair 2

112

Pass

IJXXIADX --- 2012-04-18 11:45:33
11

complementarity:

因IP補阻,眼圖及圖片無法上傳,也不能傳完整的報告,本人求教不辭辛苦,向高手們請教.(張麻子站著把錢給掙了,本人求教的同時也把金幣給掙了.)

274262832 --- 2012-04-18 11:45:45
12

线材部分阻抗尽量做到105ohms

极限眼图会有提高，这只是改善方案，

再测试一下Skew，极限眼图与衰减跟Skew有很大关系

IJXXIADX --- 2012-04-18 11:47:33
13

嗯,本人真大意,30AWG.

IJXXIADX --- 2012-04-18 11:52:18
14

2m測試都沒有問題.

暗剑 --- 2012-04-18 11:56:04
15

兄弟，从测试结果上看，你的线材导体应该是30AWG的吧？你说测试眼图不过，请问是测试什么规格眼图不过？1080P的还是3.4G的眼图？感觉你这个测试有点问题，RAW cable阻抗好好的，怎么成品测试线材差分阻抗就变的那么差了呢？阻抗这么低，除了测试问题还有就是最好把连接器的阻抗在加工前先抽测一下，看看是否合格！

取个名字难 --- 2012-04-19 08:17:45
16

裸线差分阻抗是好的加工后差分阻抗低了那么多？？？

如果是同一条线根本不可能吧！！

唯一出错的地方应该是测试裸线和测试成品的软件是否未校正或者测试哪出了问题！

IJXXIADX --- 2012-04-23 16:51:07
17

兩端加了磁環,

如果磁環壓力過大會是什麼情況?

vbgfrttw --- 2012-04-25 08:43:40
18

Thanks.

暗剑 --- 2012-04-25 15:59:22
19

应该是磁環那里出问题了吧，正常来说CABLE的阻抗高点和低点不会相差一、二十欧啊。这样阻抗也太不稳定了

liuandy --- 2012-04-26 09:36:28
20

应该是连接器的阻抗与RAW CABLE的阻抗不匹配造成的

IJXXIADX --- 2012-04-26 15:13:53
21

嗯.

多謝暗劍兄弟,還在找原因.

今天又投了5Pcs去做Connector,明天再測試一下.

电线电缆网 > 数据 高频线缆 > HDMI 1.4 眼图与高频报告分析求教.（完整版）

HDMI 1.4 眼图与高频报告分析求教. - 无图版

IJXXIADX --- 2012-04-18 11:28:451

IJXXIADX --- 2012-04-18 11:30:432

IJXXIADX --- 2012-04-18 11:31:103

IJXXIADX --- 2012-04-18 11:31:524

IJXXIADX --- 2012-04-18 11:33:255

IJXXIADX --- 2012-04-18 11:35:136

IJXXIADX --- 2012-04-18 11:36:217

IJXXIADX --- 2012-04-18 11:37:368

IJXXIADX --- 2012-04-18 11:39:079

IJXXIADX --- 2012-04-18 11:40:3410

IJXXIADX --- 2012-04-18 11:45:3311

274262832 --- 2012-04-18 11:45:4512

IJXXIADX --- 2012-04-18 11:47:3313

IJXXIADX --- 2012-04-18 11:52:1814

暗剑 --- 2012-04-18 11:56:0415

取个名字难 --- 2012-04-19 08:17:4516

IJXXIADX --- 2012-04-23 16:51:0717

vbgfrttw --- 2012-04-25 08:43:4018

暗剑 --- 2012-04-25 15:59:2219

liuandy --- 2012-04-26 09:36:2820

IJXXIADX --- 2012-04-26 15:13:5321

-- 结束 --

电线电缆网 > 数据高频线缆 > HDMI 1.4 眼图与高频报告分析求教.（完整版）

IJXXIADX --- 2012-04-18 11:28:45
1

IJXXIADX --- 2012-04-18 11:30:43
2

IJXXIADX --- 2012-04-18 11:31:10
3

IJXXIADX --- 2012-04-18 11:31:52
4

IJXXIADX --- 2012-04-18 11:33:25
5

IJXXIADX --- 2012-04-18 11:35:13
6

IJXXIADX --- 2012-04-18 11:36:21
7

IJXXIADX --- 2012-04-18 11:37:36
8

IJXXIADX --- 2012-04-18 11:39:07
9

IJXXIADX --- 2012-04-18 11:40:34
10

IJXXIADX --- 2012-04-18 11:45:33
11

274262832 --- 2012-04-18 11:45:45
12

IJXXIADX --- 2012-04-18 11:47:33
13

IJXXIADX --- 2012-04-18 11:52:18
14

暗剑 --- 2012-04-18 11:56:04
15

取个名字难 --- 2012-04-19 08:17:45
16

IJXXIADX --- 2012-04-23 16:51:07
17

vbgfrttw --- 2012-04-25 08:43:40
18

暗剑 --- 2012-04-25 15:59:22
19

liuandy --- 2012-04-26 09:36:28
20

IJXXIADX --- 2012-04-26 15:13:53
21