I N S T A L L A T I O N; Aerial Installation; Figure 5-1 Center-Conductor Pin Length - Motorola BLE Series Installation And Operation Manual

S ec ti on 5

I n s t a l l a t i o n

The field installation procedures presented in the following subsections assume that the
amplifier was previously tested and bench aligned. Cable power and RF signal must be
available on the system. Although it is desirable to have a full complement of channels available
for balancing, you can adjust the BLE*/* adequately with a limited number of channels.
You can install the BLE-HSG/15 on a messenger strand or on a pedestal. The following
subsections provide details on the application you require.
A e r i a l I n s t a l l a t i o n
The housing is normally mounted without the E-pack to avoid possible damage during
installation. Connections are made using standard pin-type connectors with a nominal
center-conductor diameter of 0.067 inches. The minimum length of the center-conductor pin is
1.5 inches and the maximum length is 1.65 inches. Longer pins can extend past the
center-conductor seizure mechanism and degrade the match. Extremely long pins can result in a
short circuit.
F i g u r e 5 - 1
C e n t e r - c o n d u c t o r p i n l e n g t h
To install the unit:
Power down the cable before you install the housing. This avoids blown fuses, tripped circuit
1
breakers, and possible personal injury.
Mount the housing, and torque the 5/16-inch messenger clamp bolts to 10 to 12 ft-lbs. Form
2
the customary expansion loops and make all cable connections.
To avoid water ingress, ensure that aluminum connectors are torqued to the specifications
3
recommended by the connector manufacturer.
Tighten the center-conductor seizure screw using a Phillips-head screw driver. An alternate
4
method is to use a 3/16-inch socket and a torque wrench. The recommended torque is
12 in-lbs. maximum.
Re-install the electronics and fasten the module to the housing with the four captive bolts.
5
Torque to 18 to 22 in-lbs.
Remove the input pad (JXP-IN) to avoid damage to the hybrids.
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Apply power to the unit and allocate a few minutes for warm up.
7
1.65" Max.
1.50" Min.
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