Comtech EF Data KPA-040 Manual de instalación Pagina 106
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MNC-0400-001 48 of 54 REV H
Operation, Rack and Digital HPAs
Standby Mode
In this mode, there are no faults and the TWT is ready for high
voltage to be applied.
Heater Standby Mode
The purpose of heater standby is to extend the life to the tube
when the high voltage is off.
The temperature of the cathode is the primary determinant of
tube life. The emission of electrons from the surface of a
cathode has a cooling effect on the cathode surface. Therefore,
when high voltage is turned off the cathode surface temperature
increases shortening the life of the tube. This is a special
concern when the amplifier is in standby mode for extended
periods of time; that is, when it is the standby unit.
Heater Standby reduces the heater voltage when high voltage is
off. The temperature of the cathode is reduced to a temperature
slightly below the normal operating temperature. When high
voltage is turned on, it overrides the heater standby command
and returns the heater voltage to its normal setting. When the
high voltage is turned off again the heater voltage is reduced.
When the amplifier has been online and then placed in the
heater standby mode, there is no time delay when high voltage
is turned on.
High Voltage ON Mode
When high voltage ON is selected, an internal relay is latched
ON. This enables High Voltage ON.
Note
When the Beam On switch is turned ON high voltage will be applied to
the TWT any time the FTD cycle is completed and there are no faults
present. Interruption of prime power for any reason will force the power
supply into the FTD Mode.
When high voltage is ON (applied to the TWT) RF input signals
are amplified. If high voltage ON is selected before the Filament
Time Delay cycle is complete, high voltage will remain OFF until
the FTD cycle is complete.
EAR EXPORT CONTROLLED: The information contained in this Manual refers or relates to a product that is subject
to the U.S. Export Administration Regulations (EAR). Transfer of data herein by any means to a Foreign Person,
whether in the U.S. or abroad, may require an export license from the U.S. Department of Commerce.
- XTRD-400K 1
- Operation and 1
- Installation Manual 1
- MN5-0062-301 ii Revision A 4
- About this manual 5
- Who should use this manual 6
- References 11
- Abbreviations and Acronyms 11
- CE Symbols 17
- MNC-0100-001 2 Revision B 20
- MNC-0100-001 4 Revision B 22
- Physical Characteristics 23
- Environmental Characteristics 23
- Specifications 23
- Contacting Xicom Technology 24
- Safety/Sicherheit 25
- General Warnings and Cautions 29
- Sicherheit 32
- Unpacking and Installation 39
- Auxiliary Interface Connector 47
- Grounding 58
- ParagraphTitle Page Number 60
- Number Title Page Number 62
- MNC-0400-001 6 of 54 REV H 64
- Controls and Indicators 65
- MNC-0400-001 8 of 54 REV H 66
- MNC-0400-001 9 of 54 REV H 67
- MNC-0400-001 10 of 54 REV H 68
- MNC-0400-001 11 of 54 REV H 69
- Menu and Screen Descriptions 71
- MNC-0400-001 14 of 54 REV H 72
- MNC-0400-001 15 of 54 REV H 73
- MNC-0400-001 16 of 54 REV H 74
- MNC-0400-001 17 of 54 REV H 75
- MNC-0400-001 18 of 54 REV H 76
- MNC-0400-001 19 of 54 REV H 77
- MNC-0400-001 20 of 54 REV H 78
- MNC-0400-001 21 of 54 REV H 79
- MNC-0400-001 22 of 54 REV H 80
- MNC-0400-001 23 of 54 REV H 81
- MNC-0400-001 24 of 54 REV H 82
- MNC-0400-001 25 of 54 REV H 83
- MNC-0400-001 26 of 54 REV H 84
- MNC-0400-001 27 of 54 REV H 85
- MNC-0400-001 28 of 54 REV H 86
- MNC-0400-001 29 of 54 REV H 87
- Figure 11, Setup Menu 2 88
- MNC-0400-001 31 of 54 REV H 89
- • Select band 90
- MNC-0400-001 33 of 54 REV H 91
- MNC-0400-001 34 of 54 REV H 92
- MNC-0400-001 35 of 54 REV H 93
- MNC-0400-001 36 of 54 REV H 94
- MNC-0400-001 37 of 54 REV H 95
- MNC-0400-001 39 of 54 REV H 97
- Menutrees 98
- MNC-0400-001 41 of 54 REV H 99
- MNC-0400-001 42 of 54 REV H 100
- MNC-0400-001 43 of 54 REV H 101
- MNC-0400-001 44 of 54 REV H 102
- Initial Setup and Operation 103
- MNC-0400-001 46 of 54 REV H 104
- • Standby 105
- • Heater Standby 105
- • Beam ON 105
- • Filament Time Delay 105
- MNC-0400-001 48 of 54 REV H 106
- MNC-0400-001 49 of 54 REV H 107
- MNC-0400-001 50 of 54 REV H 108
- MNC-0400-001 51 of 54 REV H 109
- MNC-0400-001 52 of 54 REV H 110
- MNC-0400-001 53 of 54 REV H 111
- MNC-0400-001 54 of 54 REV H 112
- Record of Changes 113
- Table of Contents 114
- Paragraph Title Page Number 114
- List of Figures 115
- List of Tables 116
- Overview 117
- Communication 117
- Compatibility 117
- Figure 1, Basic Configuration 118
- Protocol 119
- Commands and Queries 127
- XX.X in dBm 135
- Preventive Maintenance 149
- Maintenance Procedures 152
- Wartungsverfahren 154
- Service and Repair 157
- MNC-0700-001 4 Revision F 160
- Service and Repair 160
- RMA REQUEST FORM 161
- MNC-0700-001 6 Revision F 162
- TWTA SPECIFICATION 163
- XTRD-400K, 400W, SNG 163
- Appendix A 171
- 173
- 173
- 175
- 175
- 175
- 176
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