Trimming O/C and S/C

TB 9-6625-2313-50

(1) 10.0 kHz.

(2) 1.00 Vac.

(3) 0.0 Vdc.

(4) Bias Off.

(5) C.

(6) G.

(7) PARALLEL.

(8) Auto.

(9) REP.

(10) SLOW.

e. From the keypad press CODE, 9, then ENTER keys. The upper left of crt display

should read *8.

f. Place the Kelvin leads in a position that will approximate the measurement position.

Connect leads as illustrated in figure 1 for TRIM O/C. Ensure that the clips are separated

by at least 5 cm (approximately 2.5 inches).

NOTE: MAY ALSO CLIP LEAD(S) TO A PIECE OF BARE WIRE.

Figure 1. Trim O/C and S/C.

g. The residual capacitance reading should not exceed 8.8 pF, with parallel

conductance reading not exceeding 10 ns.

h. Press TRIM O/C pushbutton, (allow 10-15 seconds) then press TRIGGER

pushbutton to initiate auto-trim process. The display should read 0.0 fF (2.0 fF) and 0.0 nS

(0.04 ns).

i. Connect leads as illustrated in figure 1 for TRIM S/C, ensuring that the lead clips

are not touching each other. The analyzer should autorange to range *1 and the drive

level should change to 100 mA.