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VJ2000
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USER MANUAL
Rev. 4.0 - 26/02/01
8.6 Calibration of Plate Voltage Measurement (PLATE)
WARNING
:
Pay attention during this adjustement because are present dangerous voltages;
for this adjustement always use grounding
1)
The unit should must be switched off, perform SETUP 6.
2)
Switch the Heater/Plate Voltage meter switch (7 Fig.1) to the Plate position.
3)
Connect a dummy load (e.g. P>2KW/50 Ohm) to the RF Output of the amplifier.
4)
Before to switch on the External Multimeter verify that the multimeter selector is on VAC
position.
5)
Connect a multimeter equiped with probe for high tension measuring, to the common
terminal between R3 and C2, and to E contact on the High Tension Card.
6)
Switch on the tube amplifier.
7)
Adjust R3 trimmer of the Plate voltage measure Card to obtain the same measurement
both on the Voltage Measure Meter (6 Fig.1) placed on the front panel and on External
Multimeter.
8.7 Calibration of the PWR Meter (FWD-PWR LECTURE)
Perform SETUP 7.
1)
Connect a 50 Ohm 2KW dummy load in series with a bypass wattmeter (Byrd model
43), switch on the amplifier and verify the correct reading of the VJ2000s meter.
2)
Adjust trimmer R9, situated inside the directional coupler on the output of the low-pass
filter, near the antenna connector.
3)
To gain access, remove the small protection cover.
N.B. The trimmer R2 connected in series with the meter allows small adjustments
after the calibration of PWR, REF and FWD, and is normally in a central position.
SETUP 7
Содержание VJ2000
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Страница 43: ...VJ2000 37 44 USER MANUAL Rev 4 0 26 02 01 SETUP 3 FIG 3...
Страница 44: ...VJ2000 38 44 USER MANUAL Rev 4 0 26 02 01 SETUP 4 FIG 4...
Страница 45: ...VJ2000 39 44 USER MANUAL Rev 4 0 26 02 01 SETUP 5 FIG 5...
Страница 46: ...VJ2000 40 44 USER MANUAL Rev 4 0 26 02 01 SETUP 6 FIG 6...
Страница 51: ...VJ2000 Flat Cable 1 2 Appendice Tecnica Rev 1 0 26 02 01...
Страница 53: ...VJ2000 Telemetry Cable 1 2 Appendice Tecnica Rev 1 1 26 02 01...
Страница 55: ...VJ2000 Power Supply 1 ph 1 6 Appendice Tecnica Rev 1 0 26 02 01...
Страница 56: ...VJ2000 2 6 Power Supply 1 ph Technical Appendix Rev 1 0 26 02 01...
Страница 61: ...VJ2000 H T R Card 1 phase 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Страница 62: ...VJ2000 2 4 H T R Card 1 phase Technical Appendix Rev 1 0 26 02 01...
Страница 65: ...VJ2000 R F Block 1 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Страница 69: ...VJ2000 Power Supply 3 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Страница 70: ...VJ2000 2 4 Power Supply 3 ph Technical Appendix Rev 1 0 26 02 01...
Страница 73: ...VJ2000 H T R Card 3 phase 1 2 Appendice Tecnica Rev 1 0 26 02 01...
Страница 75: ...VJ2000 R F Block 3 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Страница 80: ...VJ2000 2 4 Alarms Card Technical Appendix Rev 1 0 26 02 01...
Страница 84: ...VJ2000 2 4 Gride Plate Meter Technical Appendix Rev 1 0 26 02 01...
Страница 88: ...VJ2000 2 4 H V M Voltmeter Technical Appendix Rev 1 0 26 02 01...
Страница 92: ...VJ2000 2 4 Plate V M Card Technical Appendix Rev 1 0 26 02 01...
Страница 96: ...VJ2000 2 4 Low Pass Filter Technical Appendix Rev 1 0 26 02 01...
Страница 99: ...VJ2000 Input Matching Circuit 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Страница 100: ...VJ2000 2 4 Input Matching Circuit Technical Appendix Rev 1 0 26 02 01...
Страница 104: ...VJ2000 2 4 Directional Coupler Technical Appendix Rev 1 0 26 02 01...
Страница 107: ...VJ2000 Telemetry Card opt 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Страница 108: ...VJ2000 2 4 Telemetry Card opt Technical Appendix Rev 1 0 26 02 01...