IFR NAV-402AP-3 Operation Manual page 30

ITEM DESCRIPTIO N
10. VAR FREQ Contr ols
Coar se and fine
channel sweep
G ener ator fr equency
FREQ UENCY MODE Switch is in a
VAR position.
incr eases the fr equency.
11. TUNE Indicator
Indicates a tuned Signal G ener ator .
The TUNE Indicator stops illuminating
when the Signal G ener ator is within
the fine tune r ange.
12. TUNE Contr ol
N O T E: For maximum accur acy, the TUNE
Contr ol should be adjusted pr ior to
any r eceiver tests.
Adjusts the
optimum tuning.
r equir es r eadjustment when:
G Selecting a differ ent fr equency
band with the FREQ UENCY MO DE
Switch.
G Adjusting VAR FREQ Contr ols to
change fr equency mor e than a few
MHz in any one band.
G Setting or changing the O UTPUT
ATTENUATOR Control.
contr ols manually
the inter nal Signal
when the
Clockwise r otation
Signal G ener ator
The TUNE Contr ol
O P E R AT I O N M A N U A L
I FF - 7 0 1 T i
ITEM
13. OUTPUT ATTENUATOR Control
Adjusts the Signal G ener ator output
level at the RF O UT Connector into a
50 Ω load.
calibr ated in - dBm ( dB below 1 mW) .
The dial is accur ate below - 30 dBm.
Another char t ( also included with the
Test Set) conver ts - dBm to soft µ V.
NOTE: Soft µ V ar e µ V measur ed with
50 Ω loading. Har d µ V ar e µ V
measur ed thr ough a 6 dB
attenuator , into a 50 Ω load.
14. FINE TUNE Switch
This switch
G ener ator
Indicator
within tune r ange) .
for TUNE Switch
Contr ol tunes the signal for minimum
deflection
MONITOR Meter.
DESCRIPTIO N
The attenuator dial is
fine tunes the
output when the
stops illuminating
With the FINE
pr essed, the
fr om 0 ( zer o) on
Jul 1/00
Signal
TUNE
( signal
TUNE
the
1- 2- 2
Page 6