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.

  

  1. The Antenna Reference Plane is the underside of the thread.