Rear Panel; Master Mod Level Control; Power On Indicator; Vor Brg Select Switches - IFR NAV-402AP-3 Operation Manual

ITEM DESCRIPTIO N
29. MASTER MO D LEVEL Contr ol
Contr ols modulation
modulating tones:
G CAL ( detent) position ( fully ccw)
fixes modulation levels of each
type of signal to nor mal values;
20% for LO C, 30% for VO R and
CO MM, 40% for G /S and 95% for
MKR.
G O ther than CAL, adjusts
modulation levels of each type of
signal fr om 3% to 35% for LO C,
55% for VO R and CO MM, 75% for
G /S and 96% for G /S.
30. PO WER O N Indicator
Illuminates when
batter y power to the Test Set.
31. VO R BRG SELECT Switches
Four thumbwheel switches select the
VO R bear ing, in degr ees, simulated
by the Test Set.
360.0 ° .
32. VO R BRG TO /FRO M Switch
Changes VO R bear ing selected by
VO R BRG SELECT
r ecipr ocal bear ing for flag tests, etc.
O P E R AT I O N M A N U A L
I FF - 7 0 1 T i
level of all
applying ac or
Valid r ange is 0 ° to
Switches to

2.2 REAR PANEL

Refer to 1- 2- 2, Figur e 2.
ITEM DESCRIPTIO N
33. NAV TO NE O UT Connector
Pr ovides audio output to test VO R
bear ing cir cuits or deviation cir cuits of
Localizer and
Navigational Receiver s. The MASTER
MO D LEVEL Contr ol var ies the output
level ≈ 0 to 7 V
NAV TO NE O UT
pr ovides access
modulation of the Mar ker and CO M
signals by connecting inter nally to the
Test Set Modulator .
34. SIG G EN DEMO D Connector
Pr ovides demodulated output of the
inter nal Signal
output, used for monitor ing Test Set
capability, can feed VO R and ILS
Conver ter s. If the available output
voltage is
≈ +4.25 Vdc component is acceptable,
the output can dr ive a Conver ter .
35. PWR MO N DEMO D Connector
Pr ovides access to the demodulated
output of a
connected to
Connector . The output can be used to
display modulation on an oscilloscope
or listen to modulation thr ough an
exter nal amplifier .

36. FUSES

Fuses input power to the Test Set.
Refer to Table 1- 2- 1, Table 1 for
cor r ect fuse size and type.
37. VO LTAG E SELECT Switch
Selects 115 or 230 VAC to match
input ac power .

38. AC IN Connector

Pr ovides input for exter nal ac power .
Refer to 1- 2- 1, par a 1.5 for Power
Requir ements.
G lide Slope
into 1000 Ω .
The
P - P
Connector also
to the audio
G ener ator . The
adequate and the
CO M Tr ansmitter
the CO M XMTR
1- 2- 2
Page 10
Jul 1/00
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