Garmin GTN 625 Installation Manual - page 28
GTN 625/635/650 TSO Installation Manual
190-01004-02
Page 1-10
Rev. F
1.3.8 Glideslope Specifications (GTN 650 Only)
Characteristic
Specifications
Sensitivity
-87 dBm or less for 60% of standard deflection.
Centering Accuracy
0 ±0.01183 ddm or 0 ±10.14 mV
Selectivity
The course deviation is 0 ddm
.0091 ddm when using the Glideslope
Centering Test Signal as the RF frequency is varied
17 kHz from the
assigned channel.
At frequencies displaced by
132 kHz or greater, the input signal is at
least 60 dB down.
Standard Deflection
With a standard deflection ‘FLY DOWN’ condition (90 Hz dominant),
the output is -78 mV ±7.8 mV.
With a standard deflection ‘FLY UP’ condition (150 Hz dominant), the
output is +78 mV ±7.8 mV.
Flag
The unit flags when:
the level of a standard VOR deviation test signal produces
50% or less of standard deflection of the deviation indicator.
150 Hz modulation is absent.
90 Hz modulation is absent.
90 Hz and 150 Hz modulations are both absent.
RF signals are absent.