HOW TO GET STARTED
If the fixture is a new build:
1. Set gate bias to minimum by turning pot fully clockwise (12 turns).
2. Remove JP1 and check drain DC power terminal using an ohmmeter: DC power
terminal should read a high impedance.
3. Replace JP1.
Initial power on:
1. Mount baseplate onto a heatsink capable of dissipating more than 100 W.
2. Terminate RF output with a 50 ohm load capable of dissipating more than 330 W.
3. Connect RF input to a 50 ohm source with RF off.
4. Ensure the drain DC is set to 0 V.
5. Connect ground, drain DC.
6. Raise drain DC slowly to 50 Vdc. Current should be 0 A.
7. Adjust gate bias to desired target current, typically 50-500 mA.
8. Slowly increment RF input power source not exceeding 1 W. Monitor drain DC
current and RF output power (typically less than 10 A max at 300 W).
9. Check drain DC current, RF output power and temperature.
Shutdown:
1. Shut off RF input power.
2. Remove drain DC voltage.
QUICK START GUIDE
MRF300AN KIT
