[Menu]>[Electronic circuit beans collection]>[PLL synthesizing oscillator (3)]
| Tools which are necessary to adjust
It is rather the confirmation than the adjustment. There is not a part to adjust too much.
Procedure of the adjustment
(Because the IC breaks when there is a mistake in the wiring, it is for the safety).
Confirm sufficiently about whether there is not a solder-bridge (contacting the terminal or the wiring in the neighborhood with solder) because the wiring is small.
As for the parts such as the capacitors which have the polarity, confirm whether or not the mounting is right.
Make the circuit tester the voltage measurement mode and connect the negative lead line with the grounding and measure the following voltages with the positive lead line. In all voltage measurement after this, the negative reed connects with the grounding.
When the +8 V line voltage isn't over, because to short-circuit is thought of, switch off the power supply at once.
Don't attache or remove the ICs as it turned on the power.The ICs have broken.
If mount of the ICs ends, turn on the power again.
It is OK if 1KHz are over as the reference frequency.
When not working normally
Because there are few parts, soldering isn't accurately stuck or only to do the bad of the part is thought of.
Adjust the output to 999.000KHz with VC1.
The adjustment ended above.