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Connect an ACX7348 Router to a GNSS Antenna
IN THIS SECTION
Gain and Noise Figure (NF) Calculation | 90
Antenna Cable Specifications | 90
Cabling Guidelines | 93
Global Navigation Satellite System (GNSS) capability is essential for the Grand Master (GM) clock
functionality. The ACX7348 router supports an internal receiver. A GNSS receiver receives signals from
a navigation satellite constellation. The GNSS receiver gains precise phase and time information by
processing these signals and delivers the information across the network.
You must install a GNSS antenna to ensure optimal signal reception. Juniper supports the Furuno
AU-217 antenna. For information about installing the AU-217 antenna, see
Installation
Procedure.
Before you connect an ACX7348 router to the external GNSS antenna:
• Understand the antenna cable specifications. See
• Follow the instructions in
To connect an ACX7348 router to a GNSS antenna:
1. Connect one end of the LMR400 cable to the GNSS connector port (labeled GNSS) on the ACX7348
router.
2. Connect the other end of the LMR400 cable to the GNSS antenna. See
Gain and Noise Figure (NF) Calculation
To calculate the total gain and NF, see GNSS Antenna Installation Appendix on the
download
page.
Antenna Cable Specifications
The following topology
(Figure 46 on page
types. Use this topology as an example to install the antenna cables.
Antenna Cable
Cabling
Guidelines.
91) depicts the antenna cable connections with connector
GNSS Antenna AU-217
Specifications.
Figure 46 on page
91.
Furuno data
90
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