Hitachi EC702MP-BB3 Operation Manual page 99

Uhf digital tv transmitters
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Set the Programmed Power in Main Module Control CM9001 to 10% of the total power of
the equipment
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11
Display Interface
>Measurements > Power > Programmed Power
Check:
Alarms Occurrences: >System Alarms/Log > Current Alarms
No alarms
Reflected Power: >Measurements > Power > Reflected
The REF power must be less than 2% of FWD Power.
Check the ALL Power Supplies, Current and Temperature in the Power
Amplifiers Drawers
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12
>Measurements > Drawers ] > Power Supply
Power Supply ≈ 50.0V (all)
>Measurements > Drawers > Current
All must be of the same current value
>Measurements > Drawers > Temperature
Below 131°F (55 °C)
Set the Programmed Power in Main Module Control CM9001 to 25% of the total power of
the equipment.
Display Interface
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13
>Measurements > Power > Programmed Power
Repeat the check from 12
Set the Programmed Power in Main Module Control CM9001 to 50% of the total power of
the equipment.
Display Interface
th
14
>Measurements > Power > Programmed Power
Repeat the check from 12
Set the Programmed Power in Main Module Control CM9001 to 75% of the total power of
the equipment.
Display Interface
th
15
>Measurements > Power > Programmed Power
Repeat the check from 12
Set the Programmed Power in Main Module Control CM9001 to 100% of the total power
of the equipment.
Display Interface
th
16
>Measurements > Power > Programmed Power
Repeat the check from 12
If there is an alarm during the power startup, it is advisable to zero the output power of
the transmitter to determine the solution and then contact Comark's customer support.
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E-Compact MP-BB3 Series
99 | 108

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