Capacitance

TB 9-4920-451-35

j. Adjust autotransformer between 105 and 125 V. Capacitance meter will indicate

within ±5 percent of reading stamped on front panel.

20. Capacitance

a. Performance Check

(1) Connect variable capacitor, 1150 to tank unit A coax connector using shielded

test probe (p/o TI).

(2) Connect variable capacitor GND terminal to TI B-UNSH terminal using

unshielded test probe (p/o TI).

(3) Set variable capacitor for 100 pF.

(4) Set FUNCTION SELECTOR switch to TANK UNIT TEST-UNSH and set

RANGE SELECTOR switch to X1. If capacitance indicator meter does not indicate

between 99.50 and 100.50 pF, perform b below.

(5) Repeat (4) above using settings, indications, and adjustments listed in table 9.

Table 9. Capacitance

Test instrument

Variable

Indications

capacitor

(pF)

Adjustments

(pF)

Range

Min

Max

(fig. 3)

300

99.50

100.5

C103

1000

X10

99.50

100.5

C105

1000

X50

19.50

20.50

---

50001

X50

99.5

100.5

---

1Subitute

capacitance standard.

b. Adjustments. Adjust C101 (fig. 3) for a capacitance indication of 100 pF.

21. Resistance

a. Performance Check

(1) Set RANGE SELECT switch to ZERO CAL. If megohmmeter does not indicate

zero adjust ZERO ADJ (front panel) for zero indication.

(2) Set CAP RES-CHECK switch to MEGOHMS AC position and set A-B

MEGOHMMETER and RANGE SELECTOR switch to MIDSCALE CAL position. If

megohmmeter does not indicate midscale, adjust MIDSCALE ADJ (front panel) for

midscale indication.

(3) Connect resistance standard (NO.1) to TANK UNIT A and TANK UNIT B

using cables furnished with TI.