Condenser Capacitance Test Circuits

TM 9-4910-736-14&P

The meter should indicate

(24)

Set the power supply for 12 V dc.

26.5 to 27.5 KV.

(25)

Disconnect the TEST LEADS.

The meter should indicate approximately

zero.

Condenser Capacitance Test Circuits.

Proceed as follows:

(1)

Set FUNCTION switch to COND and if not already done, connect

BAT LEADS to 12 V dc supply.

(2)

Set CONDENSER switch to CAP.

Connect TEST LEADS together.

(3)

(4)

Adjust trimmer potentiometer R25 (figure FO-2) for 30 KV indication

on black scale.

Connect TEST LEADS across 0.5 uF test capacitor.

(5)

(6)

Adjust trimmer potentiometer R23 (figure FO-2) for 0.5 UF

indication on red scale.

Connect TEST LEADS across 0.1 uF test capacitor. The meter

(7)

should indicate 0.09 to 0.11 uF.

(8)

Set power supply for 16 V de.

The meter indication should be

0.09 to 0.11 uF.

Disconnect the TEST LEADS.

(9)

NOTE

Other test capacitors may also be used to calibrate at

other points along the scale.

Ohmmeter Test Circuits. Proceed as follows:

(1) Set FUNCTION switch to OHM and if not already done, connect BAT

LEADS to 16 V dc supply.

(2)

Set OHMMETER RANGE switch to 0-15.

Connect the TEST LEADS together.

(3)

(4) Adjust ZERO ADJ OHM AND SERIES RES control for zero ohm

indication.

(5) Connect the TEST LEADS to 50 ohm test resistor. The meter should

indicate 4.7 to 5.3 ohms.

(6) Set OHMMETER RANGE switch to 0 - 100K.

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