190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. F Page 1-6
1.5 VOR Specifications
Table 1-6 VOR Specifications
Characteristics Specifications
Receiver audio sensitivity At -103.5 dBm (S+N)/N is not less than 6 dB
Course deviation sensitivity -103.5 dBm or less for 60% of standard deflection
Flag
The VOR Course Deviation Flag indicates in the event of any of
the following conditions:
• Absence of RF signals
• Absence of 9960 Hz modulation
• Absence of either 30 Hz modulations
• The RF level of a standard VOR deviation test signal is such
that the deflection of the deviation indicator is less than a 50%
of standard deflection
AGC characteristics
From -99 dBm to -13 dBm input of a standard VOR audio test
signal, audio output level does not vary more than 3 dB
Spurious response Greater than 60 dB
VOR OBS bearing accuracy
The bearing information as presented to the pilot does not have an
error in excess of 2.7° as specified by RTCA DO-196 and
EuroCAE ED-22B
Audio output A minimum 100 mW into a 500 load
Deflection response 0.5 to 2.7 seconds
Audio response
Less than 6 dB of variation between 350 and 2500 Hz
In voice mode, an IDENT tone of 1020 Hz Ident Tone is attenuated
at least 20 dB down
Audio distortion
The distortion in the receiver audio output does not exceed 10% at
all levels up to 100 mW
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