User's Manual

Model 1150A DVOR
6-6 Rev. - November, 2008
This document contains proprietary information and such information may not be disclosed
to others for any purposes without written permission from SELEX Sistemi Integrati Inc.
6.3.4 Transmitter Cabinet Inspection
a. Visually inspect interconnecting wire harnesses, coaxial cables and connectors for corrosion, cracks,
breaks, and burns. Insure all RF connectors are tightened.
b. Inspect all peripheral equipment connected to the DVOR, including the PMDT, printer, etc.
c. Inspect the front panel indicators on the DVOR and assure that indicators are normal.
6.3.5
Battery Backup Unit Inspection
Refer to Figure 9-4.
a. Place the Battery circuit breakers on the battery boxes in the OFF position.
b. Remove the covers from the battery boxes. Visually inspect the condition of each battery, and inspect the
connectors and cables for any cracks, breaks, burns, or corrosion. Make sure that all connectors are
fastened tightly to their terminals. Clean battery area if necessary.
c. Replace the battery box covers and place the circuit breakers in the ON position.
6.4
ALIGNMENT PROCEDURES
6.4.1 Battery Charging Power Supply (BCPS) Alignment Procedures
6.4.1.1 System AC Voltage Alignment
a. Put the VOR into the BYPASS STATE.
b. Use a Digital Volt Meter (DVM) to measure the AC input voltage from AC Monitor (1A6) TB3 terminal 1
to 2 (TX POWER, LINE and NEUTRAL).
c. Use the PMDT to display RMS >> RMS Data >> Power Supply Data, AC Input volts and verify the
reading is within 1 VAC of DVM measurement.
d. If not within 1 VAC adjust 1A5A1 BCPS R30 so the RMS >> RMS Data >> Power Supply Data, AC Input
volts is within 1 VAC of DVM measurement.
e. For single transmitter equipment skip to step i.
f. Turn off Transmitter 1 AC and DC breakers.
g. Use the PMDT to display RMS >> RMS Data >> Power Supply Data, AC Input volts and verify the
reading is within 1 VAC of DVM measurement.
h. If not within 1 VAC adjust 1A5A2 BCPS R30 so the RMS>>RMS Data>> Power Supply Data, AC Input
volts is within 1 VAC of DVM measurement.
i. Restore the VOR to the NORMAL STATE.
6.4.1.2
System AC Current Alignment
a. Turn off AC and DC circuit breakers.
b. At the shelter circuit breaker panel turn off AC power for the VOR station.
c. Disconnect the wire from the AC source to AC Monitor (1A6) TB3 position 1(TX POWER, LINE).
d. Connect a Digital Volt Meter (DVM) configured for current measurement in line with the wire from AC
source to Monitor (1A6) TB3 position 1 (TX POWER, LINE). Set the DVM to measure AC current using a
10A scale.
e. Restore AC power to the VOR at the circuit breaker panel.
f. Turn on AC and DC circuit breakers.
g. Put the VOR into the BYPASS STATE.
h. Use the PMDT to display RMS >> RMS Data >> Power Supply Data, AC Input Amps and verify the
reading is within 0.3 amps of DVM reading.
i. If not within 0.3 amps adjust 1A5A1 BCPS R56 so the RMS >> RMS Data >> Power Supply Data, AC
Input Amps is within 0.3 amps.
j. For single equipment skip to step n.
k. Turn off Transmitter 1AC and DC breakers while leaving Transmitter 2 AC and DC breakers on.