User's Manual

GM550 v1043 FCC-IC.doc Revision 2 7
Start-Up
The GS550 must be correctly programmed for the system sensors installed. The GS550 powers up
with several green lights flashing, this indicates that the display is waking up programmed sensors
and creating a radio communication link with each. Once a reliable radio communication network is
established, all green lights will remain lit without flashing.
This process may take up to one minute. The delay is created by the battery management function
and does not affect system security. If an anti-two-block switch detects a pending two-block event,
if a load cell detects a change in load, or if an angle sensor detects a change in angle, the
appropriate radio link will be established in less than 0.1 seconds. To immediately wake-up a load
cell, lift the hook with a load; to immediately wake up an angle sensor, change the boom angle.
In special conditions of lockout created by a missing sensor, you may bypass that sensor until the
next display power up by pressing bypass for 10 seconds. That sensor green light should stop
flashing and then turn off.