AXELL D-MBR 3007-3008-PS NFPA REPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
20
UMCD00013 Rev 2.2
© Axell Wireless Ltd
3.5
Grounding
NOTE: Refer to section 3.1.5 for the grounding requirements.
WARNINGS
!!! Do not use the grounding bolt to connect external devices.
To ground repeater
Connect main ground to Repeater grounding lug at the
side
of the repeater.
NOTE: The NFPA unit is colored
RED
.
Figure 3-8. Grounding Lug Location
3.6
Before Connecting Antennas or Powering On!
WARNING!
Perform this procedure before connecting the antennas to the Repeater or
powering on the Repeater.
The Repeater should not be operated prior to the verification of the operating
parameter in its installation environment
3.6.1 Verifying Isolation between Donor and Mobile Antennas
The isolation between the Base/Donor and Mobile/Service antennas is critical especially
for high gain, outdoor applications.
•
For proper operation of the Repeater, it is recommended that the isolation between
the Donor and Service antennas be at least 16dB higher than the Repeaters set gain.
•
Insure proper vertical or horizontal distance separation between Donor and Service
antennas
NOTE: Lower isolation can lead to high in-band ripple, oscillations and low signal quality.
Grounding lug