Hitachi E-Compact Medium Power Series Operation Manual page 85

Uhf digital tv transmitters
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Set the Programmed Power in Main Module Control CM8001 to 10% of the total power of
the equipment
10
th
Display Interface
>Measurements [2000] > Power [2100] > Programmed Power [1/3]
Check:
Alarms Occurrences: >System Alarms/Log [3000]> Current Alarms [3100]
No alarms
Reflected Power: >Measurements [2000] > Power [2100] > Reflected [2/3]
The REF power must be less than 2% of FWD Power.
Check the ALL Power Supplies, Current and Temperature in the Power
Amplifiers Drawers
11
th
>Measurements [2000] > Drawers [2300] > Power Supply [2310]
Power Supply ≈ 45,5V (all)
>Measurements [2000] > Drawers [2300] > Current [2320]
All must be of the same current value
>Measurements [2000] > Drawers [2300] > Temperature [2330]
Below 131°F (55 °C)
Set the Programmed Power in Main Module Control CM8001 to 25% of the total power of
the equipment.
Display Interface
12
th
>Measurements [2000] > Power [2100] > Programmed Power [1/3]
Repeat the check from 11
Set the Programmed Power in Main Module Control CM8001 to 50% of the total power of
the equipment.
Display Interface
13
th
>Measurements [2000] > Power [2100] > Programmed Power [1/3]
Repeat the check from 11
Set the Programmed Power in Main Module Control CM8001 to 75% of the total power of
the equipment.
Display Interface
14
th
>Measurements [2000] > Power [2100] > Programmed Power [1/3]
Repeat the check from 11
Set the Programmed Power in Main Module Control CM8001 to 100% of the total power
of the equipment.
Display Interface
15
th
>Measurements [2000] > Power [2100] > Programmed Power [1/3]
Repeat the check from 11
If there is an alarm during the power startup, It is advisable to zero the output power of
the transmitter to seek the solution. Case contact the Technical HKL
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E-Compact Medium Power
85 | 106

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