Garmin 01179 Remote Transceiver User Manual 190 00355 02 0F

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System Interconnects
3 SYSTEM INTERCONNECTS
3.1
GDL 69/69A Pin Out List
View of P691 connector looking at rear of unit.
60
40
61
21
62
41 42
22
63
43
23
64
44
24
65
45
25
66
46
26
67
47
27
68
48
28
69
49
30
29
10
70
50
71
72
51 52
31
11
32
12
73
53
33
13
74
54
34
14
75
55
35
15
76
56
36
16
77
37
17
78
58
57
38
18
59
39
19
20
Figure 3-1. Pin Out
Table 3-1. Pin Out List for 78-Pin D-Sub
Pin #
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Name
Config Module Ground
RS-232 Out 2
RS-232 Out 3
Signal Ground
RS-232 In 2
RS-232 In 3
RS-232 In 1
RS-232 Out 1
Reserved
Reserved
Signal Ground
Spare
Signal Ground
Spare
Spare
Spare
Audio Out 1 Lo (Spare For GDL 69)
Audio Out 1 Right (Spare For GDL 69)
Audio Out 1 Left (Spare For GDL 69)
Power Ground
Config Module Power Out
Ethernet In 1 B
Ethernet In 1 A
Ethernet Out 1 B
Ethernet Out 1 A
Ethernet In 2 B
Ethernet In 2 A
Ethernet Out 2 B
Ethernet Out 2 A
Ethernet In 3 B
Ethernet In 3 A
Ethernet Out 3 B
Ethernet Out 3 A
Spare
Aircraft Power 1
GDL 69/69A Installation Manual
190-00355-02
I/O
Out
Out
Out
-In
In
In
Out
--------Out
Out
Out
-Out
In
In
Out
Out
In
In
Out
Out
In
In
Out
Out
-In
Notes
SW Version 3.10 or higher
SW Version 3.10 or higher
GDL 69A Only
GDL 69A Only
GDL 69A Only
Page 3-1
Rev. F
System Interconnects
Pin #
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
Name
Spare
Aircraft Power 2
Spare
Signal Ground
Config Module Data
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Line Out Lo (Spare For GDL 69)
Line Out Right (Spare For GDL 69)
Line Out Left (Spare For GDL 69)
Spare
Ethernet In 4 B
Ethernet In 4 A
Ethernet Out 4 B
Ethernet Out 4 A
Config Module Clock
Audio Suppression Select 1 (Spare For GDL 69)
Audio Suppression Select 2 (Spare For GDL 69)
Audio Suppression Select 3 (Spare For GDL 69)
Audio Suppression Select* 4 (Spare For GDL 69)
Audio Suppression Select* 5 (Spare For GDL 69)
Audio Suppression Select* 6 (Spare For GDL 69)
Discrete In* 2 (Audio Channel Control)
Reserved
Reserved
Audio Mute*
Channel Increment*
Channel Decrement*
Volume Increment*
Volume Decrement*
Signal Ground
Spare
Data Link Remote Power Off
Power Ground
I/O
-In
--I/O
-----------Out
Out
Out
-In
In
Out
Out
Out
In
In
In
In
In
In
In
--In
In
In
In
In
--In
--
Notes
GDL 69A Only (Note 1)
GDL 69A Only (Note 1)
GDL 69A Only (Note 1)
GDL 69A Only
GDL 69A Only
GDL 69A Only
GDL 69A Only
GDL 69A Only
GDL 69A Only
GDL 69A Only
For Factory Use Only
For Factory Use Only
Note 1: Line Out Audio is not supported in GDL 69A with software version prior to 3.00.
Indicates signals that are active low (ground to activate). On installation wiring diagrams, the more
traditional overline symbology is used.
Page 3-2
Rev. F
GDL 69/69A Installation Manual
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System Interconnects
3.2
GRT 10 Pin Out List
Table 3-2. GRT 10 Pin Out List
Pin #
Name
Reserved
RS-232 TxD
RS-232 RxD
Signal Ground
Reserved
Reserved
Power Ground
Aircraft Power
Volume Lock*
I/O
-Out
In
----In
In
Notes
Indicates signals that are active low (ground to activate). On installation wiring diagrams, the more
traditional overline symbology is used.
3.3
GDL 69/69A Interface Descriptions
All connections to the GDL 69/69A are provided on the D-sub DB-78 connector labeled P691. The
antenna cable connection is provided on a TNC coaxial connector.



Power
The GDL 69/69A will accept input power from 9 to 33 VDC. The two aircraft power inputs (Aircraft
Power 1, Aircraft Power 2) are intended to allow power to be provided by two different power busses.
Typically, both power input pins are connected on a single bus through a single circuit breaker. If power
is obtained from two different power busses, each leg should have its own circuit breaker.
P691-35
P691-37
P691-20
P691-78
Aircraft Power 1 +
Aircraft Power 2 +
Power Ground
Power Ground
Refer to Appendix D for recommended power connections.



Configuration Module
The GDL 69/69A stores installation-specific configuration information in an aircraft configuration
module located in the DB-78’s backshell. This eliminates the need to set up aircraft specific
configuration items again if a new GDL 69/69A is installed. Since configuration module input pins
contain no lightning protection, the configuration module must be mounted within the connector
backshell as described in Section 2.5.2.2.
P691-1
P691-21
P691-40
P691-60
Configuration Module Ground
Configuration Module Power (from GDL 69/69A)
Configuration Module Data (bi-directional)
Configuration Module Clock (from GDL 69/69A)
Refer to Appendix D for interconnect information.
The configuration module is not used when installed with GDU 104x series units. The configuration
module does not store XM Satellite Radio subscription information. When a new GDL 69/69A is
GDL 69/69A Installation Manual
190-00355-02
Page 3-3
Rev. F
System Interconnects
installed in the aircraft, contact XM Satellite Radio to update the radio IDs on the current subscription or
start a new subscription.




RS-232 Ports (Qty 3)
Three RS-232 ports are available and can be used to connect the GDL 69/69A to control/display devices
(e.g., the MX20 or GMX 200). Support for Port 1 was enabled with software version 3.10.
P691-2
P691-3
P691-4
P691-5
P691-6
P691-7
P691-8
P691-11
P691-13
Port 2 TX (out)
Port 3 TX (out)
Signal Ground
Port 2 RX (in)
Port 3 RX (in)
Port 1 RX (in)
Port 1 TX (out)
Signal Ground
Signal Ground
NOTE
In order for a serial port to function correctly, the baud rate of the RX and TX channels
on a given RS-232 port must be the same. This must be considered when assigning serial
ports to interfacing equipment.



Ethernet Ports (Qty 4)
Four Ethernet ports are provided. All four ports are set up to a connection speed of 10 Mb/s and can be
used to transmit weather data to the display.
PORT 1
P691-22
P691-23
P691-24
P691-25
Ethernet Receiver input Ch1-B
Ethernet Receiver input Ch1-A
Ethernet Receiver output Ch1-B
Ethernet Receiver output Ch1-A
PORT 2
P691-26
P691-27
P691-28
P691-29
Ethernet Receiver input Ch2-B
Ethernet Receiver input Ch2-A
Ethernet Receiver output Ch2-B
Ethernet Receiver output Ch2-A
PORT 3
P691-30
P691-31
P691-32
P691-33
Ethernet Receiver input Ch3-B
Ethernet Receiver input Ch3-A
Ethernet Receiver output Ch3-B
Ethernet Receiver output Ch3-A
PORT 4
P691-56
P691-57
P691-58
P691-59
Ethernet Receiver input Ch4-B
Ethernet Receiver input Ch4-A
Ethernet Receiver output Ch4-B
Ethernet Receiver output Ch4-A
Page 3-4
Rev. F
GDL 69/69A Installation Manual
190-00355-02
System Interconnects



Discrete Inputs (GDL 69A Only)
The discrete inputs are used to control the XM radio channels and volume. All of these inputs are active
low (i.e. grounded when active, and open otherwise). Each input presents a load of greater than 10 k
.
3.3.5.1
Audio Volume Inputs (Up, Down, Mute)
The Up, Down, and Mute discrete provides audio volume control of the audio output. (Note: The volume
and mute controls have no affect on the Line Out output volume.)
P691-73
P691-74
P691-70
3.3.5.2
Volume Increment
Volume Decrement
Audio Mute
Audio Channel Control Inputs (Up, Down)
P691-71
P691-72
Channel Increment
Channel Decrement
Or
If Discrete 2 (P691-67) is grounded,
P691-71
P691-72
3.3.5.3
Preset/Favorite Channel Increment
Preset/Favorite Channel Decrement
Audio Channel Control Option Discrete
Discrete 2 is used to determine how the audio channel control inputs function. See Section 3.3.5.2.
P691-67
3.3.5.4
Discrete 2
Audio Suppression Inputs
There are six discrete inputs for audio suppression. There are three active low and three active high
inputs. The Audio Suppression inputs suppress the Audio Out output by activating any one of multiple
inputs. The threshold voltages are as follows:
Active HIGH discrete inputs: Input will go active with input voltages above 8.5V
Active LOW discrete inputs: Input will go active with input voltages below 5.0V
P691-61 Active HIGH discrete input
P691-62 Active HIGH discrete input
P691-63 Active HIGH discrete input
P691-64 Active LOW discrete input
P691-65 Active LOW discrete input
P691-66 Active LOW discrete input
3.3.5.5
Other Discrete Inputs (Not Used)
The following discrete input pins are reserved for factory use.
P691-68
P691-69



Discrete 1
Test Enable
Remote Power ON/OFF Input
The unit will turn off if this input is pulled above 3 volts. The unit will turn ON if the input is left floating
or grounded. The input presents a load of greater than 100 k
.
P691-77
Data Link Remote power off
GDL 69/69A Installation Manual
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Page 3-5
Rev. F
System Interconnects



Audio Out (GDL 69A Only)
The Audio Out provides stereo output for XM radio to be interconnected to an audio panel. The Audio
Out is affected by the volume controls, mute function, and suppression inputs. See Limitations Section
6.2 for requirements on use of suppression inputs.
P691-17
P691-18
P691-19



Audio Out Lo. This is the common ground for the audio output
Audio Out Right. This is the right channel audio
Audio Out Left. This is the left channel audio
Line Out (GDL 69A Only)
The Line Out output is always at a fixed output. The Line Out is not affected by the volume controls,
mute function, and suppression inputs. Support for Line Out was enabled with software version 3.00.
P691-52
P691-53
P691-54



Line Out Lo. This is the common ground for the Line Out audio output
Line Out Right. This is the right channel audio
Line Out Left. This is the left channel audio
Reserved Pins
These pins are reserved and should not be connected.
P691-9
P691-10


 Spare Pins
The following pins are spare pins and not connected inside the GDL 69/69A. Wires should not be routed
to these pins as they may be used in future configurations of the GDL 69/69A. Use of these pins may
result in unintended behavior.
P691-12
P691-14
P691-15
P691-16
P691-34
P691-36
P691-38
P691-41
P691-42
P691-43
3.4
P691-44
P691-45
P691-46
P691-47
P691-48
P691-49
P691-50
P691-51
P691-55
P691-76
GRT 10 Interface Descriptions
All connections to the GRT 10 are provided on the 9-pin D-Sub connector.


Power
The GRT 10 accepts input power from 9 to 33 VDC. The power input pins are connected to the aircraft
power bus through a single circuit breaker.
Pin 8
Aircraft Power +
Pin 7
Power Ground
Refer to Appendix D for recommended power connections.
Page 3-6
Rev. F
GDL 69/69A Installation Manual
190-00355-02
System Interconnects


RS-232 Port (Qty 1)
One RS-232 port is used to connect the GRT 10 to GDL 69A.
Pin 2 TX (out)
Pin 3 RX (in)
Pin 4 Signal Ground



Volume Lock
The volume lock discrete input is used to disable the volume controls of the GRC 10 remote control.
When this input is active low (i.e. grounded when active, and open otherwise), the volume up, volume
down and mute features of the GRC 10 are disabled; all other features of the GRC 10 remain functional.
Each input presents a load of greater than 10 k .
Pin 9


Volume Lock
Reserved Pins
These pins are reserved and should not be connected.
Pin 1
Pin 5
Pin 6
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Rev. F
System Interconnects
This Page Intentionally Left Blank
Page 3-8
Rev. F
GDL 69/69A Installation Manual
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System Configuration/Checkout
4 SYSTEM CONFIGURATION AND CHECKOUT
Once the GDL 69/69A and optional GRT 10 have been installed, configure the units for the particular
installation and then complete the checkout procedures herein to verify proper operation. The steps that
are not applicable to a particular installation may be ignored. A checkout log sheet is included at the end
of this section. It is to be filled out during the checkout procedure. The completed checkout log sheet(s)
should be maintained with the aircraft permanent records.
4.1
Post Installation Power Check
Move the aircraft outside and ensure that there is an unobstructed view of the Southern sky. Attach a
ground power cart to the external power connector on the aircraft and apply power.
NOTE
Use of an external power cart is optional in order to prevent the aircraft battery from
discharging to a critically low level.
Power on all systems and allow two to four minutes for initialization. Verify that the control/display unit
and the audio panel are connected and operating properly. Ensure the circuit breaker for the GDL 69/69A
and GRT 10 (if installed) is closed and the Remote Power Discrete (if wired), is enabled.
4.2 Configure RS-232 Port
For installations with the MX20 or GMX 200, refer to the corresponding installation manual for
configuring the correct RS-232 port of the MX20 or GMX 200 that the GDL 69/69A is connected. For
installations with the 400/500 and 400W/500W series units, refer to the 400/500 Series Pilot’s Guide
Addendum or the 400W/500W Series Pilot’s Guides for configuring the correct RS-232 port of the
400/500 or 400W/500W series unit that the GDL 69/69A is connected.
4.3 Configure Ethernet Port
For installations with the GDU 104x, refer to the GDU 104x installation manual, P/N 190-00303-01, for
configuring the GDL 69/69A Ethernet ports.
4.4 Initialization of Configuration Module
The GDL 69/69A requires aircraft installation information to be stored in the configuration module.
For GMX 200, MX20, 400/500 Series units, and 400W/500W Series units the configuration module is
installed in the back panel connector backshell assembly and the only parameter stored in the
configuration module is the variable attenuator value needed to obtain the required GDL 69/69A gain/loss
component.
For installations with the GDU 104x, the configuration information is stored with the G1000 avionics
system, therefore the configuration module is not installed in the GDL 69/69A connector backshell. For
installations with the G1000 avionics system, the configuration information contains the variable
attenuator value and may contain several other parameters.
NOTE
The GDL 69/69A does not provide proper operation until the configuration initialization
procedure is completed.



Configuration Module Procedure for Installation with MX20 and GMX 200
Refer to the latest revision of the MX20 or GMX 200 Installation Manual (Garmin AT Part Number 5601025-( ) and 190-00607-04) for instructions.
GDL 69/69A Installation Manual
190-00355-02
Page 4-1
Rev. F
System Configuration/Checkout



Configuration Module Procedure for Installation with 400/500 and
400W/500W Series
Perform the following steps to program the configuration module of the GDL 69/69A when using the
400/500 Series or 400W/500W Series as the control and display unit:
1. Power up the 400/500 or 400W/500W in Configuration Mode (refer to the 400/500 or
400W/500W Install Manual for instructions)
2. Go to GDL CONFIG Page
3. Enter in the Attenuation value, which is computed as in the following formula:
Attenuation = ( 6 – GLcomp )*10
GLcomp = GDL 69/69A gain/loss component value from Table 2-11.
Example: If GLcomp from Table 2-11 is -1.39dB (calculated from example in Section 2.6.4.2)
than;
Attenuation = (6 - (-1.39))*10
= (6+1.39)* 10
Attenuation = 7.39 * 10 = 73.9 rounded up 74 to enter in the 400/500 Series
or 400W/500W Series.
NOTE
If attenuation from the above calculation is < zero or > 100 then the gain/loss
compensation is outside the range required for proper operation. Review Section 2.6.4.2
for appropriate corrective action.



Configuration Module Procedure for GDU 104x
1. Insert the correct Loader Card into the top slot of the PFD.
2. Start the G1000 system in Configuration mode.
3. On the PFD, go to the Configuration Upload page using the FMS knob.
4. Activate the cursor and use the small FMS knob to highlight the airframe type in the FILE field.
NOTE
Ensure that the correct airframe type is selected before proceeding; otherwise, incorrect
configuration information will be loaded.
5. Press the ENT key to select the appropriate airframe type. Once an airframe type is selected the
configuration files in the SECTION field will be displayed.
6. Using the FMS knob, highlight ‘GDL69’ in the FILE LIST field.
7. Press the LOAD softkey.
8. Select YES and press the ENT key to acknowledge the following prompt:
9. Monitor the status of the upload. When the upload is finished, press the ENT key to acknowledge
the following confirmation:
Page 4-2
Rev. F
GDL 69/69A Installation Manual
190-00355-02
System Configuration/Checkout
10. View the SUMMARY field and ensure that all items are ‘complete’, then de-activate the cursor.
11. Go to the System Status page.
12. Activate the cursor and highlight ‘GDL69’ in the LRU window.
13. Verify that the reported part number and version of the software matches the data in the Required
Equipment List.
14. Continue to the GDL 69A test procedure.
4.5 Configure GRC 10 (Optional)
For installations with the optional GRT 10/GRC 10 wireless remote system, the GRC 10 must be
configured to communicate with the specific GRT 10 that is installed in the aircraft. To configure the RF
Pairing ID of the GRC 10:
NOTE
GRT 10 serial number is required for installation. Serial number is located on the bottom
of the unit.
1. Insert two AA batteries in GRC 10. For battery replacement see Section 7.3.
2. On the GRC 10 press any key to power the remote.
3. When the “GRT 10 not found” message is displayed on the GRC 10, press the following buttons
in order:
UP, DOWN, LEFT, RIGHT, MINUS (-), PLUS (+), PSET
4. Use the arrow buttons on the GRC 10 to enter the serial number of the GRT 10 transceiver that is
installed in the aircraft. Verify that the correct GRT 10 transceiver serial number has been
entered.
5. Press the XM button to store the GRT 10 serial number.
GDL 69/69A Installation Manual
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Page 4-3
Rev. F
System Configuration/Checkout
4.6 System Operational Checkout
Before performing system checkout, ensure that the configuration module (if applicable) is properly
programmed and the GDL 69/69A connected to the correct communication port.


Data Link Status and Connection
Power up the GDL 69/69A. View the data link status on the display/control device to verify XM signals
are being received. Refer to the MX20 installation manual, GMX 200 installation manual, 400W/500W
Series Pilot’s Guide or the 400/500 Series Pilot’s Guide Addendum for instructions on how to access the
data link status page on those units. For GDU 104x units, refer to the G1000 Configuration Manual, 19000303-04 or the aircraft specific configuration manual.
The antenna gain setting should be 25 for the GA 37, GA 55, and GA 55A, and may be different for
equivalent antennas. The cable loss setting should be set to 4.5 dB at the factory. Set this setting to the
value computed in Section 2.6.4.1 if it is different from the default value.
Figure 4-1. Data Link Configuration Page on the MX20
Figure 4-2. Data Line Configuration Page on the GMX 200
Page 4-4
Rev. F
GDL 69/69A Installation Manual
190-00355-02
System Configuration/Checkout
Figure 4-3. Data Link Configuration Page on the 400/500 Series
(500 Series shown, 400 Series screen is similar)
Figure 4-4. Data Link Configuration Page on the 400W/500W Series
(500W Series shown, 400W Series screen is similar)
GDL 69/69A Installation Manual
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Page 4-5
Rev. F
System Configuration/Checkout
Figure 4-5. Configuration Upload Page - GDU 104x
Figure 4-6. Configuration Page – GDU 104x
Page 4-6
Rev. F
GDL 69/69A Installation Manual
190-00355-02
System Configuration/Checkout


Verifying XM Receiver Signal Strength
The following check will verify the XM antenna connection to the GDL 69/69A XM Receiver. Verify
the XM signal level has a minimum of three bars.
CAUTION
Make sure the aircraft is outside and that there is an unobstructed view of the Southern
sky.
Refer to the appropriate installation manual of the display device for instructions to view the signal status.


Audio Output (for GDL 69A connected to GMX 200, MX20, 400W/500W or
GDU 104x)
CAUTION
If GDL 69A is connected to an audio panel, the audio input should be used. A test must
be conducted to ensure COMM radio signals will mute audio output from the GDL 69A.
NOTE
If a GDL 69A is installed with the 400/500 series, the GDL 69A audio feature is not
operational.
Verify Channel 0 or other channel is displayed. The GDL 69A powers up with the audio muted. Press
mute or volume keys (switch or on display/control device). Verify sound output from speakers. The GDL
69A may come with a trial activation to XM audio entertainment. With this trial activation, all audio
channels for the given subscription should be available.



Discrete Switches (for GDL 69A only, if installed)
Channel Up/Down— Press the Channel Up or Down switches and observe that channel display on the
display/control device increments or decrements, respectively.
Volume Up/Down— Press the Volume Up or Down switches and observe that speaker volume increases
or decreases, respectively.
Mute—Pressing the Mute switch should terminate sound from speakers. Pressing it again should resume
audio.
More optional checkout procedures are available after the GDL 69/69A is activated with XM Satellite
Radio Corporation. Refer to the XM Activation Procedure document, P/N 190-00355-04.


Audio Suppression Input (GDL 69A only)
The GDL 69A has audio suppression inputs to disable the audio output when an electronic aural warning,
such as a stall warning or gear warning, is activated.
With installations where the Audio Suppression is used, activate the Stall Warning, Gear Warning, or
other interfaced inputs to the Audio Suppression inputs, one at a time. Verify the GDL 69A audio to the
crew headphones is muted when each warning alarm is activated. The stall warning horn may be activated
by simply raising the stall vane on the leading edge of the wing. The gear warning horn may be simulated
by providing power or ground, as appropriate, directly to the horn. This can only be done provided the
horn has been tested for proper operation when a gear retraction test was performed.
GDL 69/69A Installation Manual
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Page 4-7
Rev. F
System Configuration/Checkout
4.7
GRT 10/GRC 10 Post Installation Checkout Procedures (If installed)


Functional Check
4.7.1.1
Power On/Off
Turn on the GRC 10 by pressing and releasing any key.
The unit will automatically power off after a period of inactivity. To manually turn off the unit, press the
Menu key, highlight the Power Down option, and press the XM key.
4.7.1.2
Channel Controls
Channel Up/Down— Press the Up or Down buttons on GRC 10 Remote Control and observe that channel
display on the GRC 10 Remote Control and display/control device increments or decrements,
respectively.
4.7.1.3
Volume Controls
Volume Up/Down— Press the Plus (+) or Minus (-) buttons on GRC 10 Remote Control and observe that
speaker volume increases or decreases, respectively.
Mute—Pressing the Mute button on GRC 10 Remote Control should terminate sound from audio
speakers. Pressing it again should resume audio.
4.7.1.4
Volume Controls (if Volume Lock Enabled)
Verify that the lock symbol is present next to the volume indicator on the GRC 10 remote control.
Volume Up/Down/Mute: Press the Plus (+), Minus (-), and Mute buttons on the GRC 10 remote control
and observe that the speaker volume does not change and that the message, “Volume Controls Locked”
briefly appears on the GRC 10 display.


GRT 10/GRC 10 Software Versions
The system information, which includes the GRC 10 software version, the GRT 10 software version, and
the RF pairing ID that is programmed in the GRC 10, can be viewed on the GRC 10. To view the system
information, press the Menu key, highlight the System Info menu selection, and press the 




return to the Menu screen, press the Menu or XM key.


GPS Interference Check
Check that the GRT 10/GRC 10 wireless remote system does not interfere with the existing GPS
installation. This test should be performed for each GPS unit installed in the aircraft. Perform the test
with the GRC 10 in a horizontal and vertical orientation.
1. Power on the GPS installation and view the GPS signal strength of each satellite being received.
NOTE
If the unit is unable to acquire satellites, relocate the aircraft away from obstructions
which might be shading GPS reception.
2. Power on the GDL 69A and GRT 10.
3. Power on the GRC 10 and verify that Channels page and Categories page are populated. NOTE:
It may take up to 10 minutes from the time the GDL 69A is powered on for the GDL 69A to
acquire this information and pass it to the GRC 10.
4. Manually power off the GRC 10.
Page 4-8
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GDL 69/69A Installation Manual
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System Configuration/Checkout
NOTE
For composite aircraft, hold the GRC 10 as close to the antenna under test as practical
from inside the cabin. For metal aircraft, hold the GRC 10 close to the window nearest
the antenna under test. Repeat the test for the other GPS antenna when complete.
5. While monitoring the signal status of each satellite being received on the GPS, power on the GRC
10 using the XM button and immediately press the 
button at least once a second for a
minimum of 35 seconds and check the GPS signal reception to make sure it is not affected (no
significant signal degradation). Perform the test with the GRC 10 in the horizontal orientation
with the unit pointing at the antenna. Repeat test with the GRC 10 in the vertical orientation with
the back of the unit pointing at the antenna.
NOTE
If the GDL 69A subscription services with XM Satellite Radio Corporation have not been
activated, only a limited number of channels will be available. In this case, repeated
pressing of the GRC 10 

 

  
  
 
 
 
  


reached. The GRC 10 is still communicating with the GRT 10 even though the channel
display may not be updated.
4.8 Activation with XM Satellite Radio
Before the GDL 69/69A can be used, the unit has to be activated by XM Satellite Radio and services have
to be subscribed to XM Satellite Radio Corporation. Refer to Garmin Document P/N 190-00355-04.
GDL 69/69A Installation Manual
190-00355-02
Page 4-9
Rev. F
System Configuration/Checkout
This Page Intentionally Left Blank
Page 4-10
Rev. F
GDL 69/69A Installation Manual
190-00355-02
System Configuration/Checkout
Date: ____ /____ /____
GDL 69/69A Post-Installation Checkout Log
INSTALLATION
INFORMATION:
By: ________________
Aircraft Model ____________________________
Aircraft Serial # ______________
GDL 69/69A Unit P/N ______________________
Mod Level __________________
Serial # _____________________
Antenna P/N __________________________
Antenna Model _______________
Serial # _____________________
CONFIGURATION ITEMS:
GDL 69/69A Installations
Remote Power Discrete

 Enabled 
 N/A
GDL 69A Installations Only

 Audio Output

 Line Output
Device ____________
Device ____________
RS-232 Serial Interface
Port 1 Device ___________
Port 2 Device ___________
Port 3 Device ___________
Audio Suppression Input
#1 
N/A 
 Active ______
#2 
N/A 
 Active ______
#3 
N/A 
 Active ______
#4 
N/A 
 Active ______
#5 
N/A 
 Active ______
#6 
N/A 
 Active ______
Ethernet Ports
Port 1 Device __________
Port 2 Device __________
Port 3 Device __________
Port 4 Device __________
Gain/Loss (GLcomp) Value
Calculated Value ________
Audio/Channel Control

Volume Control 
N/A

Volume Mute

N/A

 Channel Control 
N/A

 Preset Option

N/A
SYSTEM CHECKOUT
GROUND CHECKS (NORMAL MODE)
INTERFERENCE CHECKOUT

 [
 N/A] Serial Interference to Display Devices checked

 [
 N/A] Ethernet Interference to Display Devices checked

 Configuration Module (GLcomp) checked

 XM Signal Reception checked
AUDIO CHECKOUT (GDL 69A ONLY)

 [
 N/A] Line Output checked

 [
 N/A] Audio Output checked

 [
 N/A] Channel Control checked

 [
 N/A] Volume Control checked

 [
 N/A] Audio Mute Control checked

 [
 N/A] Audio Suppression checked

 [
 N/A] GRC/GRT Device checked
COMMENTS:
GDL 69/69A Installation Manual
190-00355-02
Page 4-11
Rev. F
System Configuration/Checkout
GRT 10/GRC 10 Post-Installation Checkout Log
INSTALLATION
INFORMATION:
Date: ____ /____ /____
By: ________________
Aircraft Model ____________________________
Aircraft Serial # ______________
GRT 10 Unit P/N __________________________
Mod Level __________________
Serial # _____________________
GRC 10 Unit P/N __________________________
Mod Level __________________
Serial # _____________________
CONFIGURATION ITEMS:
GRT 10 Discretes
Volume Lock: 
 No 
 Yes (Pin 9 grounded)
SYSTEM CHECKOUT
GROUND CHECKS (NORMAL MODE)
GPS INTERFERENCE
Interference from GRT 10/GRC 10 checked

 Vertical Orientation

 Horizontal Orientation
COMMENTS:
Page 4-12
Rev. F
GDL 69/69A Installation Manual
190-00355-02

---

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