Hitachi EC704HP Manuals

Manuals and User Guides for Hitachi EC704HP. We have 1 Hitachi EC704HP manual available for free PDF download: Operation Manual

Hitachi EC704HP Operation Manual

Hitachi EC704HP Operation Manual (138 pages)

700W UHF 8VSB-ATSC Transmitter

Brand: Hitachi | Category: Transmitter | Size: 5.18 MB

Table of Contents

Table of Contents
6
Basic Knowledge Required
8
Purpose of this Manual
8
Section 1 - Introduction
8
Structure
8
General Description
9
- Transmitter's Control System
  10
- E-Compact ATSC Transmitters Models
  13
- Composition
  13
- Block Diagram of the System
  14
- Functional Description of the System
  15
  - ATSC Digital Exciter
    15
  - Coaxial Relay (Optional Dual Excitation)
    21
  - Power Splitter
    21
  - UHF Power Amplification System
    21
  - Power Combiner
    24
  - Loads Bank
    24
  - Filtering System
    25
  - RF Sampling Probe
    25
  - Power Supplies
    25
  - Electrical Distribution Drawer (MCCB)
    26
  - Cooling System
    26
  - Technical Specification - E-Compact TV ATSC Transmitters
    27
Photo - EC701HP Tansmitter
28
Introduction
30
Minimum Requirements
30
- Electric Power
  30
- Grounding
  30
- Stability
  30
- Insulation
  31
Section 2 - Minimum Installation
30
Atmospheric Discharge Protection System
33
- Lightning Arresters
  33
- Cable Protectors
  33
Air Conditioning
34
- Temperature
  34
- Humidity
  34
- Cooling
  34
- Section 3 - Installation
  38
Inspection
38
Installation Recommendations
38
- Preventive Protection
  38
- Tower
  39
- Fastening of Cables, Antennas and
  39
- Equipment Installation Indoors
  41
- Equipment Grounding
  41
- Electric Installation Grounding
  42
- Power Supply
  42
Introduction
38
Mechanical Drawings
43
- Front View
  43
- Rear View
  44
- Isometric View
  45
- Dimensions (MM)
  46
- Top View
  47
Front Panel
48
- Digital Exciter
  48
- Power Drawer
  51
- Top Panel
  54
Power Network Connections
55
- Power Feeding Options
  55
- AC Power Cable Connections
  55
- On Site Physical Assembly
  56
- Assembly Instructions
  56
- Connections
  58
- Internal Connections
  58
- External Connections
  63
- Section 4 - Initial Activation
  66
Introduction
66
Connections and Final Checks
74
- Possible Operations with the Transmitter in Operation
  74
- Communication
  74
- Serial Terminal Emulators
  75
- Forbidden Operations
  75
- Safeguards
  75
Automatic Power Reduction Table
76
Digital Exciter - the Master Control Unit
77
- Keypad
  78
- Display
  78
- Signaling
  78
Introduction
77
- Front Panel
  77
Section 5 - System Operation Manual
77
Flowcharts Screens
79
- Presentation and Main Options
  79
- Setup Menu
  80
- Measurements
  84
- System Alarms / Log
  86
- Remote Access
  87
- Options
  88
Setup Menu
89
- Power Setup
  91
- Transmitter Setup
  91
- Image Frenquency Suppression
  92
- LO Adjustment (lo Leakage Suppression)
  94
- Active / De-Active Pre-Correction
  94
- Modulation Settings
  96
- Time and Date Configuration
  97
- Password
  97
- Transport Stream Input
  98
- Alarms Mask
  99
- USB Setup
  99
- USB Host Access Setup
  100
- Crest Factor Reduction
  100
- Clock Reference
  101
- Restore Web Password to Default
  103
- Transistor Bias Adjustment
  103
- PA Temperature Control
  105
Start up
89
Measurements Menu
106
- Power
  108
- Transport Stream
  108
- RF Power Drawer Measurements
  109
- Exciter Power Supply
  112
- Communication Among RF Drawers
  112
- Software/Hardware Version
  113
- Automatic Level Control
  114
- Clock Measurements
  115
- Power Supply Voltages
  116
Alarm System
116
- Current Alarms
  116
- Alarm Log
  117
- Drawers Alarms
  118
- Clear Past Alarms
  119
Remote Management System (Telesupervision)
123
- IP Configuration
  123
- Mask Configuration
  124
- Gateway Configuration
  124
- Host Address Configuration
  124
Options
126
Introduction
128
Preventive / Corrective Maintenance
128
Preventive Maintenance
128
- Quiescent Currents Automatic Adjustment Procedure
  132
Corrective Maintenance
133
- Visual Identification of Alarms (Leds)
  133
- Measurements Readings
  133
- Power Drawer Air Filter
  134
- Power Drawer Fan Replacement
  136

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