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9.5
RECOMMENDED SIGNAL CABLES
To maintain equipment performance, signal quality and EMC compliance, only the
cables listed below should be used. If other cables are selected you must ensure that
they meet (or surpass) the specifications given in these tables.
9.5.1
Video cable
For video signals always use 75 ohm coax cable with properly matching terminations to
prevent electrical reflections within the cable. Such reflections could be seen in the
displayed picture as a GHOST image.
To prevent radiation and reduce susceptibility of electromagnetic interference never use
coax cable that has less than a 95% braided shield.
Do not use foil shielded coax cables as the flexing of such cables at (or near) the
physical connector termination may fracture the shield causing an intermittent earth
connection for the video signal.
Conductor
Size (AWG)
Cable
Material
Type
(mm)
14 (solid)
RG11/U
.95 CCS
23 (solid)
RG59B/U
.58 CCS
Select the BNC connectors specifically for the coax cable being used. The center pin
must match the inner conductor size, dielectric diameter, overall cable diameter and
Nominal impedance. Your cable supplier should recommend the correct 75 ohm BNC
connectors for their cable.
Rev. C
Dielectric
Type Size
Shield
(mm)
Type
95% bare
CPE
Copper
7.24
braid
95% bare
PE
Copper
3.71
braid
CAUTION: Never use a 50 ohms BNC connectors. The
center pin on 50 ohms male BNC connectors is slightly
smaller in diameter, which has the potential for
intermittent connection when plugged into a 75 ohm
socket.
Jacket
Nominal
Type Size
Impedance
(mm)
ohms
Black PE
75
10.29
Black NPVC
75
6.15
9-5
Nominal
Nominal
Attenuation
Capacitance
@200MHz
pF/m
db/100m
56.8
7.2
67.3
16.1
HMXMU001018
10/06
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