Instrument components
Instrument components
a) TNC connector for UHF antenna
b) LEMO port 1
c) LEMO port 2
d) Keyboard with LED and ON/OFF button
e) Battery compartment A with SIM card and microSD card holders
f) Battery compartment B
g) Antenna reference plane (ARP)
ON/OFF button
Zenith55 has a ON/OFF button to perform different operations.
If Zenith55 is off:
Turns on the Zenith55 when held for 2 s. While the Zenith55 is booting the Power LED is solid green while the other LED are off.
Shows the battery status when the ON/OFF button is pressed and held for less than 2 s.
Starts the recovery process when held > 6 s. Refer to the user manual for more details.
If Zenith55 is on:
Turns off the Zenith55 when held for 2 s.
Antenna reference plane
The Antenna Reference Plane:
Is where the instrument heights are measured to.
Is where the phase centre variations refer to.
Varies for different instruments.
The ARP for the Zenith55 is shown in the diagram.
The Antenna Reference Plane is the underside of the thread.