Meinberg IMS-GPS180, Руководство пользователя

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4 GPS Clock
GPS Time Scale:
UTC
Coordinated Universal Time (including leap seconds which are continuously updated)
GPS since 1st of January 1980 - GPS System Time: monotonous time scale without leap seconds.
Includes the leap seconds from 1970-1980.
TAI since the 1st of January 1970 - International Atomic Time: monotonous time
scale without leap seconds. Difference to GPS Time: 19 seconds.
Log Satellite Visibility (GPS Receiver):
If this item is activated, a graphic is generated on which the constellation of the visible satellites are displayed.
SSM Quality Level in GPS Lock Mode:
If the system has E1 / T1 outputs, the quality level of the SSM can be configured here.
Satellite Navigation System Mode (GNS Receiver):
Depending on the receiver module type, you can configure different navigation satellite systems.
Distance to the Transmitter (km) - PZF / AM Receivers only:
In the menu item "Distance to the Transmitter" you can enter the transmitter distance in km, which is used for the
delay compensation of the incoming PZF-signal. The adjustment of the distance should be made as precisely
as possible, because it has a direct influence on the absolute accuracy of the time raster.
PZF Simulation Mode:
This menu allows the user to operate the time server without an antenna. Normally, the NTPD loses synchro-
nization when the antenna or the external reference source is disconnected (red FAIL LED is turned on). By
activating the simulation mode, the corresponding status information for the NTPD is permanently set to SYNC.
This also makes it possible to transmit other times, which have been entered via the menu item "Initialize the
receiver", to the NTPD. In normal cases, the checkbox should remain empty. If this box is activated, the status
"Simulation mode" is displayed under "Info of the receiver" in the main menu.
IMS-GPS180 Setup Guide Date: 10th January 2018 21