Front Panel - IFR NAV-402AP-3 Operation Manual

2.1 FRONT PANEL

Refer to 1- 2- 2, Figur e 2.
ITEM DESCRIPTIO N
1. MONITOR Meter
Pr ovides, accor ding
METER FUNCTION Switch selection,
analog indication of CO M Tr ansmitter
RF power , Signal G ener ator RF level,
Batter y voltage, per cent modulation of
Signal G ener ator
er r or s at 90 ° .
2. MONITOR METER FUNCTION Switch
Selects MO NITO R Meter function:
G 10W selects 0 to 10 Watt scale
( bottom scale) to measur e CO M
Tr ansmitter RF power .
G 100W selects 0 to 100 Watt scale
( bottom scale X 10) to measur e
CO M Tr ansmitter RF power .
G RF indicates best Signal G ener ator
RF level by adjusting TUNE
Control with FINE TUNE Switch
pr essed to set MO NITO R Meter to
center scale.
G BAT selects 0 to 30% scale in
volts to indicate inter nal Batter y
voltage. A ≥ 15 V r eading indicates
a fully char ged Batter y. A <12 V
r eading indicates a dischar ged
Batter y.
G 30% selects 0 to 30% scale to
measur e modulation level of Signal
G ener ator .
G 100% selects 0 to 100% scale to
measur e modulation level of Signal
G ener ator .
G BRG checks VO R G ener ator at
90 ° . Center of the band indicates
0 ° bear ing er r or . Left or r ight
meter scale limit indicates bear ing
er r or s of ± 0.5%.
O P E R AT I O N M A N U A L
I FF - 7 0 1 T i
to MO NITO R
or VO R bear ing
ITEM DESCRIPTIO N
3. LO C DDM Contr ol
Selects amount
deviation of an ILS Indicator under
test. Calibr ations in DDM r epr esent,
standar d deflection (.093) , full scale
( .155) and gr eater
deflections ( .200) . Clockwise r otation
pr ovides upwar d deflection.
The 150 ~ or 90 ~ position deletes the
opposite tone ( 90 or 150 Hz) and sets
the selected
90 Hz) to the same level as the on
cour se value ( 20%) for a flag test.
N O T E: Setting the G /S DDM Contr ol
to the same 150 ~ or 90 ~
position when using the
Localizer function deletes the
selected Localizer tone.
Setting the LO C
150 ~ and the G /S DDM Contr ol to 90
~ or vice ver sa pr ovides continuous
wave oper ation.
The ↓ position allows the LO C VAR
DDM/DDM SWEEP
Contr ol to set continuously deviated
deflection.
4. DIG ITAL Display
Pr ovides digital r eadout of selected
VO R bear ing,
G ener ator fr equency, exter nal signal
fr equency or
fr equency. The
Switch deter mines displayed function.
of LO C pointer
than full scale
tone ( 150 or
DDM Contr ol to
AMPLITUDE
inter nal Signal
CO M Tr ansmitter
CO UNTER MO DE
1- 2- 2
Page 4
Jul 1/00