Garmin 500 Series Installation Manual page 37
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Also See for 500 Series:
- Installation instructions manual (34 pages) ,
- Installation manual (115 pages) ,
- Owner's manual (72 pages)
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4.5.1.11 ILS/GPS APPROACH Output
Sinks 500 mA when GPS navigation is selected and GPS approach is active or when VLOC navigation is
selected and an ILS channel has been selected. This output may be connected to the ILS Engage input of an
autopilot or flight director to provide higher autopilot gain while the 500 Series unit is operating in the ILS
or GPS Approach modes of operation.
4.5.1.12 DEMO MODE SELECT
This discrete input may be used to select Demo Mode on the 500 Series unit. A low on this pin at time of
unit power-up invokes the Demo Mode. Demo Mode allows the 500 Series unit to simulate reception of
GPS satellite signals.
Do not connect DEMO MODE SELECT in an aircraft installation.
4.5.1.13 TIME MARK OUT
Time Mark Out is a time reference pulse output once per second, derived from GPS satellite signals.
4.5.2
Annunciators/Switches Electrical Characteristics
4.5.2.1 Annunciators
Pin Name
VLOC ANNUNCIATE
GPS ANNUNCIATE
WAYPOINT ANNUNCIATE
TERMINAL ANNUNCIATE
APPROACH ANNUNCIATE
MESSAGE ANNUNCIATE
OBS ANNUNCIATE
INTEGRITY ANNUNCIATE
ILS/GPS APPROACH
All outputs sink up to 500 mA when activated.
4.5.2.2 Switch Inputs
Pin Name
OBS MODE SELECT
CDI SOURCE SELECT
DEMO MODE SELECT
These inputs are considered active if either the voltage to ground is < 1.9 V or the resistance to ground
is < 375 Ω. These inputs are considered inactive if either the voltage to ground is > 18.5 V or the resistance
to ground is > 100 kΩ.
4.5.2.3 TIME MARK OUT
Pin Name
TIME MARK OUT
TIME MARK OUT outputs a 1 ms ± 1 µs wide pulse once every 1.0 s ± 2 ms. TIME MARK OUT is a
logic level output, capable of sourcing 1 mA at up greater than 3.8 V and sinking 1 mA at less than 0.4 V.
4.5.3
Annunciators/Switches Configuration
None.
4.5.4
Annunciators/Switches Calibration and Checkout
Refer to section 5.2.7 for the annunciators/switches checkout.
4.5.5
Annunciators/Switches Interconnect
Refer to Figure 4-10 on page 4-41 for the annunciators/switches interconnect.
Page 4-10
Page Rev. B
CAUTION
Connector
P5001
P5001
P5001
P5001
P5001
P5001
P5001
P5001
P5001
Connector
P5001
P5001
P5001
Connector
P5001
500 SERIES INSTALLATION MANUAL
Pin
I/O
1
Out
2
Out
3
Out
4
Out
5
Out
6
Out
7
Out
9
Out
14
Out
Pin
I/O
71
In
73
In
75
In
Pin
I/O
16
Out
P/N 190-00181-02
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