NAVMC ELECT 2042, NAVSHIPS 91904 A
Table of Contents
Page 1 -
Page 2 & 3 -
Page 4 & 5 -
Schematic Diagram -
In the bridge diagrams "G" is the 1,000 Hz tube generator and HT (Head Telephone) is the eye tube.
InstallationGround the ground lead. Plug cord into 105 - 125 Volt A.C. line. POWER to ON.
Electrolytic CapacitorsConnect capacitor, observing polarity, to C posts;
FUNCTION to C CHG;
RANGE to 1, 10 or 100;
advance VOLTAGE CONTROL slowly until meter reads working voltage.
Read leakage on 25, 5, or 1 MA scale.
Balance for C and D while charged.
Insulation ResistanceConnect sample to INS. RES. posts;
FUNCTION to CAL;
OSCILLATOR to D.C. VOLTS;
advance VOLTAGE CONTROL until meter reads 500 Volts.
Adjust CALIBRATE INS. TEST until eye pattern just closes.
Turn FUNCTION to 5000 M or 10,000 M and VOLTAGE CONTROL until pattern again just closes.
Read insulation resistance on meter.
Capacitor QualityPlug in cable P101 clips open;
FUNCTION and RANGE to CAP QUAL;
D dial to 0;
VOLTAGE CONTROL to 0;
OSCILLATOR to SET METER.
Turn VOLTAGE CONTROL until meter is full scale.
Set OSCILLATOR to OPEN,
turn OSCILLATOR ADJUST until meter is full scale.
Clip leads on capacitor.
If meter stays still capacitor is open.
If meter falls, turn OSCILLATOR to SHORT.
If meter returns to full scale capacitor is shorted.
If meter falls it is not shorted. SEE MANUAL (NAVSHIPS 91704) FOR LIMITATIONS.
Table 1 - For R, L, C and turns ratio measurements
Operation Resistance Turns Ratio Inductance Inductance Capacitor
R N1/N2 L(Q) L(D) C Connect to
L L C *For balance Q D D if no balance reverse one
Try L (D)
Try L (Q)
ZM-11 & ZM-11A Manual © Brooke Clarke 2002 (does not include the B version)
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