User Manual Part 2

Installation 6-9MTX5000 User and Technical Manual
6.8.4 Determine the Size of Harness Required
Length The length of your harness is set by the length of the
mast when fully raised. Refer to Table 6-2 to locate typical
dimensions, as shown in Figure 6-5. Note these are only typical
dimensions. Your harness may be different.
The formula used to determine theoretical end-to-end cable
lengths (See Figure 6-5) is as follows:
Overall Length = (DIM A - 5 ft.) x 2 + DIM B + DIM C
For example, with a mast height of 58 ft., minus 5 ft. inside the
truck = 53 ft. x 2 = 106 ft. + 10 ft. + 20 ft. = 136 ft.
Table 6-2: Harness Dimensions
Mast
Height
Overall
Length
Dim. A Dim. B Dim. C
42’
[12.8 M]
104‘
[31.7 M]
74’
[22.5 M]
20‘
[6.0 M]
10‘
[3.0 M]
48’
[14.6 M]
116’
[35.4 M]
86’
[26.2 M]
20‘
[6.0 M]
10‘
[3.0 M]
58’
[17.7 M]
136’
[41.5 M]
106‘
[32.3 M]
20‘
[6.0 M]
10‘
[3.0 M]
Figure 6-5: Harness lengths
6.9 Cabling Requirements
CAUTION
To avoid potential problems, existing wiring
harnesses must be carefully examined for
evidence of damage, corrosion, or broken
wire strands, and any damage detected
must be repaired before a new MTX5000
system is placed into service.
CAUTION
Failure to provide sufficient current carrying
capacity between the MTX5000 IDU and the
ODU(s) may cause performance issues,
including dropouts in transmission, and may
cause damage to the equipment or to the
installation.
DIM A
DIM A
Overall Length
Overall Length
DIM C
DIM C
DIM B
DIM B
Nycoil Conduit
Nycoil Conduit
IDU End
IDU End
ODU En
dODU End
A = Length of Nycoil only
B = Length of cables outside Nycoil on IDU end
C = Length of cables outside Nycoil on RFU (RFU) end