QAM Marker
Signal Source
rev1.0.5 August 15, 2017
10
Power and Alarm Indicators
Allow 15 seconds for the QAM Marker to initialize after applying power.
Automatic Level Mode Initialization
The Alarm indicator is ON and the Power indicator flashes as the adjacent QAM channel levels and
Marker signal are measured while adjusting the QAM Marker output level. The flash rate increases
as the automatic process nears completion. When the automatic level mode has stabilized, the
power indicator is steady ON and the Alarm indicator is OFF. Either the VHF or UHF LED will light
(dependent on which marker frequency is used) a solid green to indicate that Automatic mode is
present.
Manual Mode
When the manual mode is selected, either the VHF or UHF LED will light (dependent on which
marker frequency is used) a solid orange color to indicate that manual mode is being used.
Low Level Adjacent QAM Channels
The Alarm indicator is ON and the Power indicator flashes if both adjacent QAM channels are low or
off.
Alarm Indicator ON or Flashing (Power indicator ON)
The Alarm indicator is on when an internal problem is detected. If the Alarm idicator continues to be
on after pressing the Reset button repair is needed.
