User's Manual Part 1

14
Setup parameter Comment
Antenna power
Enabled for active antenna
or Disabled for passive antenna
or Auto sense allows the NAV-7 to detect the antenna type
Antenna status Unknown: see Troubleshooting guide
Active: an active antenna is connected
Passive: a passive antenna is connected
Overload: excessive current; see Troubleshooting guide
Error: see Troubleshooting guide
Signal strength
The size of the bar indicates the highest signal strength being
currently received by any of the three receivers
Monitor source Selects receiver to monitor
Using Setup mode: Receiver options screen
The Setup mode: receiver options page can be used to help install the
NAV-7 and to diagnose receiver faults.
Operation of the Signal strength bar:
The signal strength bar gives an approximate indication of the highest signal level
being received on any frequency.
When a NAVTEX signal is being received, the appropriate receiver frequency icon
appears at the top of the display. If the Monitor source is set to this frequency then
the received data will appear in the Monitor window.
Installation of the antenna:
You may wish to check that the NAVTEX antenna position is suitable by inspecting
the signal strength during a known NAVTEX transmission from a local station.