XX077-00-00 Rev 1201 Surveyor2000-MSH Maximum Security Housing
Cable Recommendations
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10
Cable Recommendations
Coaxial Cable
Caution: Careful selection of the proper cable is essential to obtain the best performance from this
equipment. Vicon assumes no responsibility for poor performance when cables other than those
recommended are installed. In all cases, coaxial cable impedance should be 75 ohms.
Materials
Use only cable with a pure copper center conductor. Do not use cable with either a copper-plated steel or an aluminum
center conductor because these do not transfer signals effectively in the frequency range used in CCTV networks. A
center conductor with low DC resistance is required for effective CCTV operation. Solid-core bare copper conductor is
best suited to video applications, except where flexing occurs. If the coaxial cable will be subjected to flexing during
normal use, select a cable with a stranded center conductor. The preferred dielectric material is cellular (foam)
polyethylene. It has better electrical characteristics than solid polyethylene, but is more vulnerable to moisture. Therefore,
use only solid polyethylene dielectric cable with a heavy exterior insulation in applications subject to moisture. The shield
must be copper braid providing 95% or better coverage.
Cable Types
The most commonly used cable types are RG-59/U and RG-11/U. Each is actually a family of cables with widely varying
electrical characteristics, some of which are not suitable for CCTV applications. Choose a cable type by referring to the
characteristics and maximum distances listed below. The maximum distance for best picture refers to the distance
between the camera and the unit The characteristics of the cables in this table should be used as a guideline when cables
other than Belden are used. Materials and construction must follow the guidelines above. Note that “BC” refers to bare
copper and “TC” refers to tinned copper.
Recommended Coaxial Cable Types
Cable
Type
Belden
Type No.
Alpha
Type No.
West Penn
Type No.
Type Center
Conductor
Type Shield and
% Coverage
DC Resistance
ohms per 1000
feet (km)
RG-11/U
8213
9847
811,4811
14 Solid BC
BC braid (95%)
2.6 (8.5)
RG-6/U
9248
9804C
806,4806
18 Solid BC
Foil + 61% TC
braid (100%)
7.5 (24.6)
RG-59/U
8281
9803
815
20 Solid BC
2 TC braids (96%)
9.9 (32.5)
RG-59/U
9259
----
816
22 Stranded BC
BC braid (95%)
15.0 (49)
RG-59/U
9659
----
----
22 Stranded BC
BC braid (95%)
15.0 (49)
Picture Quality vs. Cable Length
Maximum Cable Run* ft (m)
Picture Quality
RG-59/U RG-6/U RG-11/U
Usable picture
1100 (350)
1500 (450)
2400 (750)
Clean picture
820 (250)
1000 (300)
1600 (500)
Best picture
400 (120)
530 (160)
820 (250)
* Longer cable runs may produce a dim, faint picture. Use a Vicon Video Amplifier to obtain a usable
picture for long cable runs.
Usable Vicoax Signal vs. Cable Length
Maximum Cable Length ft (m)
RG-59/U RG-6/U RG-11/U
Usable Vicoax signal
1500 (450)
1500 (450)
1500 (450)
