PCM ( E1 ) Swith board Cable (each pair Individually shielded)

   Figure：
                 
1.Application：This cable is used for interconnecting between frames of PCM equipments
                   with 120W characteristic impedance.
2. Conductor：Annealed bare copper or tinned copper
3. Insulation：Foamed  PE / HDPE
4. Shielded：Two wires are twisted to form a pair then shielded with a layer of Al-Mylar
                foil. A piece of tinned copper wire is added along with the pair as drain wire.
5. Assembly：Suitable number of pairs are assembled to form a cable core.
6. Overall shield：a. Layer of Al-Mylar foil with a drain wire.
7.Sheath：PVC (polyvinyl Chloride)or LSNHFRPE.( ow-moke Non-Halogen Flame Retardant
              Polyethylene).      
8. Structure：       

Conducyor

Pair

Insulation

Cable core

Sheath

Overall

Standard

Diameter(mm)

(P)

Diameter(mm)

Diameter(mm)

Thickness(mm)

Diameter(mm)

Length(M)

 0.5

1

 1.3

3.5

0.6

5.0

200

2

6.0

0.6

7.5

200

4

7.0

0.6

8.5

500

8

10.0

0.6

11.5

500

10

10.0

0.6

11.5

500

16

13.5

0.8

16.0

500

22

16.0

1.0

18.3

500

25

16.0

1.0

18.5

500

32

19.0

1.0

21.5

500

40

21.0

1.5

24.5

500

9. Characteristics：

Items

Specification

Conductor Resistance (20℃)

Max.100.2W / Km

Conductor Resistance unbalance(20℃)

Max.5 ﹪

Insulation Resistance (20℃，DC 500V / 1min.)

Min.5000M - Km

Dielectric strength

DC 1000V / 1min. Between Conductors

DC 1500V / 1min. Between Conductors and shield

Static Capacitance (1KHz)

Max.50 nf / Km

Attenuation. (1024 KHz)

Max.34 dB / Km

Characteristic Impedance (1024 KHz)

120 ± 10W

Near-end cross talk (1024 KHz)

Min.70 dB / 500M

10. Marking：TATUNG CO. PCM – E1 0.5 ´ ð P year ð M