6.1 Antenna Connection
There are two types of radio signals commonly used for timing applications:
satellite signals from Global
Navigation Satellite Systems (GNSS)
, and
long wave signals
from specific time code transmitters operated
by some countries.
Most GNSS signals can be received world-wide, while long wave signals can only be received up to a certain
distance around the transmitting station. Also, GNSS receivers can usually track the signals from several
satellites at the same time, so the signal propagation delay can be determined and compensated automatically,
while long wave receivers usually receive only the signal from a single station. Last but not least the available
bandwidths and signal propagation characteristics are another reason why GNSS reception usually yields a
higher degree of time accuracy than long wave reception.
A detailed description of the reception modes of our reference clocks and instructions for antenna installa-
tion can be found in our LTOS firmware manual:
http://www.mbg.link/doce-fw-ltos
in chapter "Antenna and
Receiver Information".
The following table shows the available receiver types from Meinberg
Type
Receiver
Systems
Antenna / signal reference
——————————————————————————————————————————————
GPS
GPS Clock
GPS
GPSANT / Converter
GNS
GNS Clock
GPS, GLONASS
GNSS antenna
Galileo, BeiDou
(up to three systems in parallel)
GNM
GNM Clock
GPS, GLONASS
Multiband-GNSS-Antenne
Galileo, BeiDou
(up to four systems in parallel)
PZF
PZF Clock
DCF77
AW02 long wave outdoor antenna
MSF
MSF Clock
MSF (UK)
AW02-60 long wave outdoor antenna
WVB
WWVB Clock
WWVB (US)
AW02-60 long wave outdoor antenna
TCR
TCR Clock
Time code reader
Time code generator
RDT
no clock module
Network
ext. reference, ext. NTP server
26
Date: 27th May 2021
IMS - LANTIME M4000