Cambium PTP 670 Series, Руководство пользователя

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Chapter 5: Installation Installing the Trimble Accutime GPS receiver
Page 5-37
Figure 121 Grounding and weatherproofing requirements for GPS adapter cable
Follow the procedure described in
Creating a drop cable grounding point on page 5-56 , but
observe the following differences:
•
There is no need to remove 60mm (2.5inches) of the drop cable outer sheath, as this has
already been done.
• Wrap the top layer of self-amalgamating tape around the complete assembly (not just the
ground cable joint), including the RJ45 connection with the GPS adapter cable (
Figure 122 ).
•
Wrap all five layers of PVC tape around the complete assembly ( Figure 123 ). Wrap the
layers in alternate directions: (1st) bottom to top; (2nd) top to bottom; (3rd) bottom to top;
(4th) top to bottom; (5th) bottom to top. The edges of each layer should be 25mm (1 inch)
above (A) and 25 mm (1 inch) below (B) the previous layer.
•
Check that the joint between the GPS adapter cable, drop cable and ground cable is fully
weatherproofed (
Figure 124 ).
Figure 122 Wrapping self-amalgamating tape around the GPS adapter cable joint