Glideslope Specifications (Gtn 650 Only); Table 1-2. Gtn Current Specifications - Garmin GTN 635 Installation Manual

1.3.7

Glideslope Specifications (GTN 650 Only)

Characteristics
Sensitivity
Centering Accuracy
Selectivity
Standard Deflection
Flag
LRU
GTN 625
Main Connector
GTN 635
Main Connector
COM Connector
GTN 650
Main Connector
COM Connector
NAV Connector
[1] The specified current draw is with the display backlight set to 100% and the fan operating
at low speed. If the superflags are connected, their current draw must be added in
addition to the specified current.
[2] The specified current draw does not include the superflags. If connected, their current
draw must be added to the specified current. The superflags will supply up to 320 ma
each regardless of the input voltage.
Page 1-6
Rev. C
-87 dBm or less for 60% of standard deflection.
0 ±0.01183 ddm or 0 ±10.14 mV
The course deviation is 0 ddm
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.
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.
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.

Table 1-2. GTN Current Specifications

14 Volt Current Draw
Typical Maximum
1.6 A [1] 2.8 A [2]
1.6 A [1] 2.8 A [2]
5.66 A (16W COM)
0.45 A
4.02 A (10W COM)
1.6 A [1] 2.8 A [2]
5.66 A (16W COM)
0.45 A
4.02 A (10W COM)
0.60 A 1.16A [2]
Specifications
.0091 ddm when using the Glideslope
28 Volt Current Draw
Typical
0.8 A [1]
0.8 A [1]
0.21 A
0.8 A [1]
0.21 A
0.30 A
GTN 625/635/650 TSO Installation Manual
Maximum
1.5 A [2]
1.5 A [2]
2.33 A (16W COM)
1.76 A (10W COM)
1.5 A [2]
2.33 A (16W COM)
1.76 A (10W COM)
0.58 A [2]
190-01004-02