Capacitor · tan δ
Connection
DIRECT: capacitor on CH0 (centre pin + shell) — C, ESR, SRF, ESL; for low loss only an upper bound. Q DIFF: coil + known NP0/mica C₁ in series CH0–CH1 (with THRU); TAKE REF, then the capacitor under test instead of C₁ → tan δ. POWER: heating of the capacitor from the voltage at the trap end.
Details: User Manual (PDF in your package).