本產品適用于1GHZ以下閉路電視系統、共用天線電視系統作分支線和用戶線以及其它電子裝置。電纜分配系統用物理發泡聚乙烯絕緣同軸電纜比實芯聚乙烯、化學發泡聚乙烯和縱孔聚乙烯絕緣電視電纜具有更優良的高頻性能，它有衰減低、一致性好、不易受潮等突出優點，為此在國際、國內市場已獲得廣泛使用。
It is used as branch cable and user cablefor signal distribution system of closed circuit TV and common antenna TV of 1GHZ and
lower, or for other electronic devices. Coaxial cable with physically foamed PE insulation for cable distribution system has good features of low attenuation, good consistency and humidity resistance etc compared with TV cable with solid core PVC, chemically foamed PE and cell PE insulation. Now, it is widely used in domestic and international market.
環境條件：-25℃~+70℃（PVC護套）
-40℃~+70℃（PE護套）
Environment temperature:
-25℃~+70℃（PVC sheath）
-40℃~+70℃（PE sheath）
相對濕度：當溫度為40±2℃，為90%~95%。
Relative humidity is 90%~95%
under the temperature of 40±2℃.
常用型號及名稱 Common Type and Description
| 型號Type | 名稱 Name |
| SYWV-75-5 SYWV-75-7 SYWV-75-9 | 物理發泡聚乙烯絕緣聚氯乙烯護套同軸電纜 Coaxial cable with physically foamed PE insulation, PVC sheath |
| SYWY-75-7 SYWY-75-9 | 物理發泡聚乙烯絕緣聚乙烯護套同軸電纜 Coaxial cable with physically foamed PE insulation and sheath |
電纜的結構尺寸 Structure Dimension of Cable
| 型號 Type | 內導體mm Inner conductor | 絕緣外徑mm Insulation OD | 外導體mm Outer conductor | 護套mm Sheath |
| SYWV-75-5 | 1.0±0.02 | 4.8±0.2 | ≤5.8 | ≤7.5 |
| SYWV-75-7 SYWY-75-7 | 1.66±0.02 | 7.25±0.25 | ≤8.3 | ≤10.6 |
| SYWV-75-9 SYWY-75-9 | 2.15±0.03 | 9.00±0.25 | ≤10.3 | ≤12.6 |
備注：1、內導體為單根圓銅線或銅包鋁線.
Inner conductor consists of single round cipper wire or cipper-clad aluminum wire.
2、絕緣為物理發泡聚乙烯.
Insulation material is physically foamed PE.
3、外導體為鋁塑復合膜和鍍錫圓銅線（或鋁合金線）編織雙層屏蔽形式。
Outer conductor consists of aluminum-plastic compound file and tinned round cipper wire(aluminum-alloy wire)braid dual shielding.
4、護套為聚氯乙烯或聚乙烯。
Sheath material is PVC or PE.
