Requirements And Specifications For The Recommended Gnss Antenna; Antenna Selection Guidelines; Recommended Gnss Antenna Specifications; Trimble Bullet 38Db Gps L1 Antenna Specifications - Juniper ACX500 Hardware Manual

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Documentation

Requirements and Specifications for the Recommended GNSS Antenna

Antenna Selection Guidelines

Recommended GNSS Antenna Specifications

Table 38: Trimble Bullet 38dB GPS L1 Antenna Specifications

Parameter
Electrical Specifications
Prime power
Copyright © 2016, Juniper Networks, Inc.
Preventing Electrostatic Discharge Damage to an ACX500 Router on page 196
Requirements and Specifications for Installing a GNSS Antenna on page 87
Antenna Selection Guidelines on page 95
Recommended GNSS Antenna Specifications on page 95
Keep the following points in mind while selecting the appropriate GPS antenna for the
ACX500 router:
The ACX500 router requires an active GPS antenna with built-in low-noise amplifier
(LNA) for optimal performance.
The ACX500 router supports only 3 V DC voltage. For antennas that do not have a
voltage rating of 3 V DC, we recommend that you use an active splitter or amplifier as
required (DC block from ACX500 and antenna power from external power source)
that supports the antenna voltage. See
voltage and current for 3 V antenna application.
An active splitter or amplifier (DC block from ACX500 and antenna power from external
power source) can also be inserted into the antenna path near the receiver for additional
gain or added voltage support range. The use of a parasitic nonactive amplifier is not
recommend.
To use a GNSS antenna with the ACX500 router, the antenna must be a GNSS L1/G1
antenna (1575–1610 MHz). At present there are several GNSS antennas available in the
market that meet the ACX500 router criteria.
We recommend that you use the following GNSS antenna with the ACX500 routers:
Trimble Bullet 38dB GPS L1 Antenna Specifications on page 95

Trimble Bullet 38dB GPS L1 Antenna Specifications

The Trimble Bullet III GPS L1 antenna boosts the signal from the antenna with a gain of
38 dB. The antenna receives power, rated at 3.3 VDC, from the ACX500 router through
the antenna's coaxial cable connections.
Table 38 on page 95 lists the Trimble Bullet GPS antenna specifications.
Chapter 9: ACX500 Timing Server Specifications
Table 37 on page 94
Specification
+3.3 VDC (+/-10%)
for more details on available
95