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This is ADVANTEST YTO
YIG(Yttrium Iron Garnet) TUNED OSCILLATOR 3.7-8.2GHz
Green wire is Main coil.
Copper wire is FM coil . |
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Back of cover is OSC circuit .
Ceramic PCB used.
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This is Agilent YTO used Spectrum Analyzer
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Cover side
Oscillation Circuit
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Coil side
You can see Main Coil and FM coil
Small FM coil is on center top for sweep MHz-KHz order. |
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OSC(Oscillotor Circuit )
Center ball YIG supported arm.
Ring is OSC circuit .
Bottom is output port . |
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Zoom by stereo scope.
Black ball is YIG . |
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ATTenuator
ANRITSU Attenuator
Input right Output Left to RPP
Relay driver PCB upper |
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Relay side center is amature
It is not latching type ??? HOT!! |
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Chip side Upper U circuit is through
Lower U circuit is ATT chip. |
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Close up switch point
Relay bar push the contact from back. |
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It has two block ATT .
Checking function |
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HP 8494B DC-18GHz 11dB
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Rotary amature push contact by 2leg
from front 4dB 2dB 4dB 1dB |
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Left is pull contact through
Right is push contact as attenation . |
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A amature has two legs and push two contact
All amature push then 11dB |
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CHIP side
It fixed by 20 screw
Upper is contact Lower is ATT chip. |
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4dB ATT CHIP
PAI type ATT |
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Two Contact point pushed by amature.
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Side view 4dB ATT chip
Brown pattern is resister chip |
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HP Isolator
HP Q365A Isolator WR22 33-50GHz |
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WR22 33-50GHz Flange-round
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Black peace is permanent magnet .
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