Aero-Flex NAV-402AP-3 User Manual download pdf (Page 31)

OPERATION MANUAL

NAV-402AP-3

1-2-2

Page 8

Sep 1/04

ITEM DESCRIPTION

30. POWER ON Indicator

Illuminates when applying ac or battery

power to the Test Set.

31. VOR BRG SELECT Switches

Four thumbwheel switches select the

VOR bearing, in degrees, simulated by

the Test Set. Valid range is 0° to 360.0° .

32. VOR BRG TO/FROM Switch

Changes VOR bearing selected by VOR

BRG SELECT Switches to reciprocal

bearing for flag tests, etc.

2.2 REAR PANEL

Refer to 1-2-2, Figure 2.

ITEM DESCRIPTION

33. NAV TONE OUT Connector

Provides audio output to test VOR

bearing circuits or deviation circuits of

Localizer and Glide Slope Navigational

Receivers. The MASTER MOD LEVEL

Control varies the output level ≈0 to

7 V

p-p

into 1000 Ω . The NAV TONE OUT

Connector also provides access to the

audio modulation of the Marker and COM

signals by connecting internally to the

Test Set Modulator.

34. SIG GEN DEMOD Connector

Provides demodulated output of the

internal Signal Generator. The output,

used for monitoring Test Set capability,

can feed VOR and ILS Converters. If the

available output voltage is adequate and

the ≈+4.25 Vdc component is acceptable,

the output can drive a Converter.

35. PWR MON DEMOD Connector

Provides access to the demodulated

output of a COM Transmitter connected

to the COM XMTR IN Connector. The

output can be used to display modulation

on an oscilloscope or listen to

modulation through an external amplifier.

36. FUSES

Fuses input power to the Test Set. Refer

to Table 1-2-1, Table 1 for correct fuse

size and type.

37. VOLTAGE SELECT Switch

Selects 115 or 230 VAC to match input

ac power.

38. AC IN Connector

Provides input for external ac power.

Refer to para 1-2-1.5 for Power

Requirements.

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