Informacje o sprzęcie

Hewlett Packard 618C Generator
Producent:
Hewlett Packard
Modelu: 618C
Data: 1980
Kategorii: Przyrządy pomiarowe
Grupa: Generator
Opis: SHF Signal generator
Informacje:
                                    DESCRIPTION.

1-2. The Hewlett-Packard Models 618C/620B SHF Signal
Generators (Figure 1-1) provide RF signal output in the
frequency ranges of 3800 to 7600 MHz, and 7000 to 11,000 MHz
respectively. At least 1-mW power output is available over
the entire frequency range. The output frequency is
indicated on a direct-reading dial. The RF output power is
adjustable by an attenuator that is calibrated in µV and dB.

1-3. Five types of modulation are available: internal pulse
modulation, external pulse modulation, internal frequency
modulation, external frequency modulation, and internal
square-wave modulation.

1-4. The internal pulse modulation has a variable repetition
rate of 40 to 4, 000 Hz. Pulse width is variable from 0. 5
to 10 us as measured at the pulse 50% amplitude points.
Internal square wave modulation is variable from 40 to 
4,000 Hz.

1-5. The Signal Generator can be modulated by external
pulses of positive or negative polarity. The amplitude of
the modulating pulses may be 20 to 70V, and the pulse width
between 0.5 and 2500 µs.

1-6. Internal frequency modulation comprises a sawtooth
sweep rate of 40 to 4,000 Hz. Frequency deviation is
variable from 0 to 5 MHz over most of the band. External
frequency modulation from an external sine wave is provided.
Frequency deviation is approximately 5 MHz.

1-7. Synchronization outputs of the Signal Generator
comprise two types: delayed, and undelayed. The delayed
synchronization output is a positive pulse that
occurs simultaneous with the RF pulse. The pulse has an
amplitude of 25 V minimum and a rise time less than 1 µs
when terminated in a load of 1000 ohms or more. The
undelayed synchronization pulse has the same characteristics
as the delayed pulse, except the pulse occurs between 3 to
300 µs (as adjusted by front-panel control) before the RF pulse.

1-8. Both the pulse- and frequency-modulated RF output may
be synchronized with the following externally generated
signals: sine waves of 40 to 4, 000 Hz, and 5 to 50V
amplitude; pulses of 40 to 4,000 Hz, a peak amplitude of 5
to 50V, a rise time of 0.1 to 1 µs, and a width of 0.5 to 5 µs.

Te Podręczniki są dostępne dla powyższego urządzenia:

Typ instrukcji: Serwis i User Manual HewlettPackard-10075-Manual-Page-1-Picture
Stron: 138
Rozmiar: 6.15 Mbytes (6445201 Bytes)
Język: Angielski
Zmiana:
Podręcznik numer: 00618-90029
Data: 01 kwiecień 1980
Jakość: Skanowany dokument, wszystko czytelne.
Data wysłania:
MD5: d202116362c920aa9e87e1cc80581ed3
Pliki do pobrania: 25 od 30 grudzień 2017
Informacje:
I	GENERAL INFORMATION......................1-1

1-1. Description..............................1-1

1-9.	Instrument Identification............1-1

II	INSTALLATION....................................2-1

2-1.	Incoming Inspection..................2-1

2-3. Preparation for Use..................2-1

2-4. Power Requirements............2-1

2-6. 115/230 Volt Operation..............2-1

2-9. Power Cable........................2-1

2-12. Cooling..............................2-1

2-14. Air Filter............................2-1

2-16.	Repacking for Shipment..............2-1

in OPERATION........................................3-1

3-1.	Introduction............................3-1

3-3. General Operating Information . .	3-1

3-7. Controls. Connectors and

Indicators............................3-1

3-9. Basic Operating Procedures ...	3-1

3-10. Turn On..............................3-1

3-11.	Detailed Operating

Procedures......................3-1

3-13.	Operation with the Dymec

DY-2650A Oscillator

Synchronizer....................3-1

IV	PRINCIPLES OF OPERATION................4-1

4-1.	Introduction............................4-1

4-3. The Modulator Section..............4-1

4-41. The RF Oscillator....................4-9

4-87. The Power Monitor.........4-14

4-91. The Power Supplies.........4-15

4-92.	General Operating

Principles............4-15

4-96.	-300 Volt Supply.........4-16

4-98.	-1000 Volt Supply.........4-16

4-100.	-1550 Volt Supply.........4-16

V	MAINTENANCE....................................5-1

5-1.	Introduction............................5-1

5-3. Maintenance Precautions. ...	5-1

5-4. Periodic Inspection..................5-1

5-5. Cleaning..............................5-1

5-7. Lubrication..........................5-1

5-9. Performance Tests..................5-1

5-10. Purpose..............................5-1

5-12. Test Equipment Required . . .	5-1 5-14. RF Power-Output

Accuracy Check................5-1

5-15.	Frequency Accuracy.

Stability, and aFM

Check..........................5-1

5-16.	Uncalibrated RF Output

Check..............................5-2

5-17.	Internal Pulse-Modulation

Check..............................5-2
Section	Page

5-18.	Internal Square-Wave

Modulation Check...... 5-2

5-19.	External Pulse Check..... 5-3

5-20.	Internal FM Check....... 5-4

5-21.	External FM Check...... 5-4

5-22.	External Sine-Wave

Synchronization Check . . . 5-4 5-23.	External Pulse

Synchronization Check . . . 5-4

5-24. Adjustments............. 5-5

5-25.	Test Equipment Required . . 5-5

5-27.	Power-Supply Voltage

Adjustments.......... 5-5

5-29. Adjustments Following

Replacement of Klystron

V114 (618C)............ 5-6

5-31. Adjustments Following

Replacement of Klystron

V114 (620B)............ 5-7

5-33.	Calibrating the Frequency

Dial (618C).......... 5-9

5-35.	Calibrating the Frequency

Dial (620B).......... 5-10

5-37.	Calibrating the Pulse

Rate Control......... 5-11

5-39.	Calibrating the Pulse

Delay Control......... 5-11

5-41.	Calibrating the Pulse

Width Control......... 5-11

5-43.	Power Set Meter

Adjustments.......... 5-12

5-46. Troubleshooting........... 5-12

5-47.	Test Equipment Required . . 5-12

5-49.	Isolating a Trouble to a

Circuit Section........ 5-12

5-66. Isolating Trouble in

Transistor Circuits....... 5-14

5-68.	In-Circuit Testing....... 5-14

5-71.	Testing Transistor s with

an Ohmmeter......... 5-14

5-73. Klystron Removal (618C)..... 5-14

5-75. Klystron Replacement (618C) . . 5-16

5-77. Klystron Removal (620B) .... 5-17

5-79. Klystron Replacement (620B) . . 5-17

5-80. Replacing Repeller Tracking

Potentiometer.......... 5-18

5-82. Replacing and Recalibrating

the Alternator (618C)...... 5-19

5-85.	Replacing the Attenuator

Probe (618C)......... 5-19

5-87.	Recalibrating the

Attenuator........... 5-19

5-88. Replacing and Recalibrating

the Attenuator (620B)...... 5-20

5-90.	Replacing the Attenuator

Probe (620B)......... 5-20

5-92.	Recalibrating the

Attenuator (620B)...... 5-21
5-94. Tube and Semiconductor

Replacement............5-21

5-96. Etched Circuits............5-21

5-98.	Component Replacement .... 5-22

5-101. Transistor and

Semiconductor Diode

Replacement..........5-23

5-102. Q601. Q602 Lead Identification. . 5-23

VI REPLACEABLE PARTS............ 6-1

6-1. Information............... 6-1

6-3. Ordering Information........ 6-1

APPENDIX I SHF SIGNAL GENERATOR .. 
1-1 APPENDIX II MANUAL CHANGES ......11-1
HewlettPackard-10075-Manual-Page-1-Picture


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