Name: Symmetricom TimeProvider 2700
Brand: Symmetricom
Rating: 4 (1 reviews)

To Next Page

To Previous Page

098-00564-000 Revision A3 – July, 2013 TimeProvider 2300/2700 User’s Guide 333

Appendix C Installing GNSS Antennas

Available GNSS Antenna Kits

 Symmetricom does not recommend the use of GNSS splitters. However, if one is

used, it must provide a load of at least 10mA.

Available GNSS Antenna Kits

Each of the GNSS antenna kits are available with cable lengths of 20, 40, 70, 150

and 230 meters each providing RF gain to the GNSS receiver of between 15 and 30

dB using combinations of a GNSS 26 dB gain active antenna, a GNSS 40 dB gain

active antenna and a 25 dB gain GNSS in-line amplifier. Components are

weather-proof packaged per IP67 for exposed locations. The GNSS Input Card

provides power to the active antenna and in-line amplifier and then detects alarms

on antenna connection open conditions.

Symmetricom does not recommend the use of GNSS splitters. Splitters reduce the

reliability of the overall system, add additional delay, and may not provide a DC load

to the unit. The TimeProvider 2700 requires at least 10mA of DC current load on the

antenna port to prevent an open-circuit alarm. This alarm will prevent using GNSS

as a reference.

All GNSS antenna kits include the antenna, mounting bracket, coaxial cable,

required adapters, a lightning arrestor, and other kit components. The GNSS

antenna kits are listed in Table C-1.

Table C-1. GNSS Antenna Kits for TimeProvider 2700

Antenna Kit Part Number

Cable Length

(meters)

Cable

Delay

(ns)

min max