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Koulye a, ou ta dwe konekte yon rezèv pou 15V pouvwa a D 'a pouvwa prensipal sèlman, ak yon voltmètr nan pwodiksyon an nan U3, ak yon vann san preskripsyon frekans nan pèseptè a nan Q4. Si w ap resevwa frekans ki kòrèk la, ou se nan gwo chans ak ta dwe ale ak jwe lotri! Anjeneral VCO a pral soti nan ranje kaptire. Si voltmètr la li alantou 14V, sa vle di frekans lan a twò ba. Si li li fèmen nan zewo, sa vle di frekans lan se twò wo. vann san preskripsyon nan frekans ta dwe dakò ak sa. Ou bezwen ajiste frekans lan VCO sant yo pote l 'nan pòte. Pou travay sa a ou gen de pwen ajisteman: Youn nan se C20, lòt la se koube L4! Anjeneral régler la pou kont li pa bay ase ranje, se konsa santi yo lib yo pliye bobin an. Lè ou ajiste VCO nan apeprè dwa, PLL a ap fèmen nan, epi w ap jwenn yon frekans pwodiksyon ki estab, trè pre nan yon sèl la ou vle. Ajiste L4 ak C20 pou ke voltmètr la li apeprè 9V. Tankou yon vòltaj varactor relativman wo se bon pou pi bon pèfòmans bri, paske li kenbe varactors yo soti nan k ap antre nan kondiksyon nan tèt yo RF. Idealman ou ta dwe ajiste bobin a pou ke régler la se tou pre ranje sant ak vòltaj la nan 9V. Sa a ba ou pi fasil koreksyon pita.
eng
Now you should connect a 15V power supply to the main power input only, with a voltmeter at the output of U3, and a frequency counter at the collector of Q4. If you get the correct frequency, you are in big luck and should go and play lottery! Usually the VCO will be out of capture range. If the voltmeter reads around 14V, it means the frequency is too low. If it reads close to zero, it means the frequency is too high. The frequency counter should agree with this. You need to adjust the VCO center frequency to bring it into range. For this task you have two adjustment points: One is C20, the other is bending L4! Usually the trimmer alone does not give enough range, so feel free to bend the coil. When you have adjusted the VCO roughly right, the PLL will lock in, and you will get a stable output frequency, very close to the one you want. Adjust L4 and C20 so that the voltmeter reads roughly 9V. Such a relatively high varactor voltage is convenient for best noise performance, because it keeps the varactors from entering conduction at the RF peaks . Ideally you should adjust the coil so that the trimmer is near center range with the voltage at 9V. This gives you easiest correction later.