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VJ2000
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USER MANUAL
Rev. 4.0 - 26/02/01
4. General Description
4.1 Mechanical Description
The VJ2000 is housed in a 19" rack-mountable frame, 20U high, of which 8U are free
and may be used for an exciter, a receiver or other equipment.
All controls and switches are situated on the front panel together with two analog meters.
There are no connectors on the rear panel.
Both the cooling air inlet complete with fan and filter, and the power cable entry hole may be
found on this panel.
A flue may be found on the top of the unit for the expulsion of hot air used for coooling the
unit, together with the RF output connector (to be connected to the antenna).
4.2 Electrical Description
The VJ2000 is a tube amplifier with an earthed grid allowing a wide-band input (no
calibration across the band) from 87.5 to 108MHz.
This amplifier is able to generate an output power of over 2KW from an input power of
approx. 60W. The amplifier features motorized anode and load matching across the entire
operational band.
The VJ2000 is available in single phase version or three phase version.
4.3 Controls and Indicators
Three analog meters are present on the front panel; one measures direct and reflected
power output (2 Fig.1), one measures plate and grid currents (4 Fig.1), the last measures
heater and plate voltage (6 Fig.1).
The meter for the measurements of the direct and reflected power has two scales too; one
for 250W f.s. to measure reflected power output, the other for 2.5KW f.s. to measure direct
power output.
The meter for the measurements of the grid and plate currents has two scales too; one for
1A f.s. to measure plate current, the other for 100mA f.s. to measure grid current.
The meter for the measurements of the heater and plate volatge has two scales too; one for
5KV f.s. to measure plate voltage, the other for 10V f.s to measure heater voltage.
For each of these meters there are the relative reading selector
(3,5 and 7 Fig.1).
In central position there are some switches and led indicators that concern to the plate and
Summary of Contents for VJ2000
Page 1: ...Prodotto da Italia VJ2000 User Manual...
Page 4: ...This page intentionally left blank...
Page 21: ...VJ2000 15 44 USER MANUAL Rev 4 0 26 02 01 FIG 1...
Page 23: ...VJ2000 17 44 USER MANUAL Rev 4 0 26 02 01 FIG 2...
Page 25: ...VJ2000 19 44 USER MANUAL Rev 4 0 26 02 01 FOTO 1 3 1 2 5 7 11 9 4 6 8 12 10...
Page 27: ...VJ2000 21 44 USER MANUAL Rev 4 0 26 02 01 FOTO 2 1 2 3 6 5 4...
Page 29: ...VJ2000 23 44 USER MANUAL Rev 4 0 26 02 01 FOTO 3 10 11 8 3 9 1 2 7 6 5 4...
Page 43: ...VJ2000 37 44 USER MANUAL Rev 4 0 26 02 01 SETUP 3 FIG 3...
Page 44: ...VJ2000 38 44 USER MANUAL Rev 4 0 26 02 01 SETUP 4 FIG 4...
Page 45: ...VJ2000 39 44 USER MANUAL Rev 4 0 26 02 01 SETUP 5 FIG 5...
Page 46: ...VJ2000 40 44 USER MANUAL Rev 4 0 26 02 01 SETUP 6 FIG 6...
Page 51: ...VJ2000 Flat Cable 1 2 Appendice Tecnica Rev 1 0 26 02 01...
Page 53: ...VJ2000 Telemetry Cable 1 2 Appendice Tecnica Rev 1 1 26 02 01...
Page 55: ...VJ2000 Power Supply 1 ph 1 6 Appendice Tecnica Rev 1 0 26 02 01...
Page 56: ...VJ2000 2 6 Power Supply 1 ph Technical Appendix Rev 1 0 26 02 01...
Page 61: ...VJ2000 H T R Card 1 phase 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 62: ...VJ2000 2 4 H T R Card 1 phase Technical Appendix Rev 1 0 26 02 01...
Page 65: ...VJ2000 R F Block 1 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 69: ...VJ2000 Power Supply 3 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 70: ...VJ2000 2 4 Power Supply 3 ph Technical Appendix Rev 1 0 26 02 01...
Page 73: ...VJ2000 H T R Card 3 phase 1 2 Appendice Tecnica Rev 1 0 26 02 01...
Page 75: ...VJ2000 R F Block 3 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 80: ...VJ2000 2 4 Alarms Card Technical Appendix Rev 1 0 26 02 01...
Page 84: ...VJ2000 2 4 Gride Plate Meter Technical Appendix Rev 1 0 26 02 01...
Page 88: ...VJ2000 2 4 H V M Voltmeter Technical Appendix Rev 1 0 26 02 01...
Page 92: ...VJ2000 2 4 Plate V M Card Technical Appendix Rev 1 0 26 02 01...
Page 96: ...VJ2000 2 4 Low Pass Filter Technical Appendix Rev 1 0 26 02 01...
Page 99: ...VJ2000 Input Matching Circuit 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 100: ...VJ2000 2 4 Input Matching Circuit Technical Appendix Rev 1 0 26 02 01...
Page 104: ...VJ2000 2 4 Directional Coupler Technical Appendix Rev 1 0 26 02 01...
Page 107: ...VJ2000 Telemetry Card opt 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 108: ...VJ2000 2 4 Telemetry Card opt Technical Appendix Rev 1 0 26 02 01...