Hitachi E-Compact Medium Power Series - Main Modules; CM8001 Control Module (MOD GV 40056); RF Input

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E-Compact Medium Power
6. Main Modules
6.1. CM8001 Control Module (MOD GV 40056)
The E-Compact series of transmitters utilize a dedicated 1RU controller chassis, CM8001. The
controller chassis has several functions including:
Access to exciter setup / monitoring
• AC mains power monitoring
• RF drive signal monitoring
• RF Exciter Level Control to RF Splitters
• RF power amplifier metrics
• RF output signal monitoring (FWD & RFL)
• Local user interface
• USB port for software diagnostics / updates
• External Web GUI status monitoring and control interface
The CM8001 controller gathers the status monitoring of all the transmitter subassemblies to provide to
the operator transmitter status information, either locally or remotely. The controller provides transmitter
telemetry including RF power monitoring. A user-friendly man/machine interface on the transmitter
controller chassis includes:
• A front panel LCD screen provides transmitter status information.
• A front-panel control interface for menu driven commands (up/down/right/left navigation, escape,
& OK buttons).
• LED status indicators
The CM8001 transmitter controller is paired with the TV exciter. For transmitter systems configured
optionally with dual drive, the transmitter is equipped two / redundant controllers, one for each exciter
eliminating single point failures for even higher system reliability.
6.1.1. RF Input
The CM8001 Control Module redistributes the RF signal received from the Exciter by controlling its level
of distribution to the Power Amplifiers Drawers as a function of the transmitter's rated nominal power. For
this, the CM8001 is set at the factory to receive an RF signal level of 0dBm, with minimum / maximum
tolerances of -1dBm / + 1dBm.
EXCITER (NOT INCLUDED)
CONTROL MODULE CM8001
RF: 0dBm (Typical)
+1dBm (max)
-1dBm (min)