Cable Application
Apply in CATV system as trunk, spur feeder and subscribers feeder.
Cable Features
- Low Attenuation
- Low standing wave ratio
- Favorable shielded function
- Broadband
- Excellent bend adjusting
Structures and Performance
|
Structure |
SYWV-75-5 |
SYWV-75-7 |
SYWV-75-9 | |||
|
Inner conductor |
Materials |
Solid copper,alluminium-coated copper wire | ||||
|
Diameter(mm) |
1.00 |
1.66 |
2.15 | |||
|
Insulated layer |
Materials |
physical vesicant Polyethylene | ||||
|
Diameter(mm) |
4.80 |
7.25 |
9.00 | |||
|
Outer conductor |
Materials |
Aluminum-plastic Composite shielded tape + knitted metal wire | ||||
|
Diameter(mm) |
Dual layer |
5.40 |
7.80 |
9.70 | ||
|
Protective layer |
Materials |
PVC, Polyethylene or light and heat fastness Polyethylene | ||||
|
Diameters(mm) |
Dual layer |
7.20 |
10.30 |
12.30 | ||
Electric features
|
Item |
SYWV-75-5 |
SYWV-75-7 |
SYWV-75-9 | |
|
Standard capacitance (PF/m ) |
54 |
52 |
51 | |
|
Identity impedance(Ω) |
75 |
75 |
75 | |
|
Transmit speed (%) |
82 |
85 |
87 | |
|
Attenuation (dB/100m 20℃max) |
5MHz |
2.0 |
1.3 |
1.0 |
|
50MHz |
4.7 |
3.0 |
2.3 | |
|
200MHz |
9.0 |
5.8 |
4.5 | |
|
550MHz |
15.8 |
10.3 |
8.0 | |
|
800MHz |
19.0 |
12.8 |
9.9 | |
|
1000MHz |
22.0 |
14.4 |
11.3 | |
|
Shield Attenuation (dB/100m) |
5MHz |
85 |
85 |
85 |
|
50MHz |
85 |
85 |
85 | |
|
200MHz |
90 |
90 |
90 | |
|
500MHz |
90 |
90 |
90 | |
|
800MHz |
90 |
90 |
90 | |
|
Insulation Resistance(mΩ·km) |
≥10000 |
≥10000 |
≥10000 | |
|
Optical Return Loss(dB) |
≤300MHz |
≥22 |
≥22 |
≥22 |
|
＞300MHz |
≥20 |
≥20 |
≥20 | |