Campbell AeroX Audio 105 User manual

03/2023
Copyright © 2023
Campbell Scientific, Inc.

Table of contents
1. Introduction 1
2. Precautions 1
3. Initial inspection 1
4. Specifications 2
4.1 Rear panel 2
4.2 Front panel 4
4.3 Microphone 5
5. Connector pin-outs 6
6. Product description 10
6.1 Power supply 10
6.2 Power-up process 10
6.3 VOL/DATA dial 10
6.4 PTT microphone 11
6.5 Audio outputs 11
6.6 Audio inputs 12
6.7 PTT connector 13
6.8 LIGHTS connector 15
6.9 VOICE MODEM connector 15
6.10 HANDSET connector 15
6.11 USB connector 15
6.12 ETHERNET connector 15
6.13 Redundant connector 16
6.14 Audio electronics 16
7. Troubleshooting 16
7.1 AudioServer software update procedure 16
7.2 Micro-controller firmware update procedure 17
Table of Contents - i

1. Introduction
The AeroX Audio105 is an audio controller that allows digital voice files to be transmitted over
ground to air radios. Furthermore, it allows users to append audio messages to be transmitted
through multiple audio inputs/outputs. Thus, the AeroX Audio105 fulfills the hardware
component of an Automatic Terminal Information Service (ATIS) that produces critical flight
safety information in the form of an audible voice information stream that can be transmitted
over a radio for pilots. The information transmitted are the weather conditions at the airport, as
well as operational information, such as the current runway in use, available approaches, the
state of the runway, and breaking conditions. Other information, such as if the airport has certain
restrictions, can also be broadcasted through this system.
2. Precautions
lREAD AND UNDERSTAND the Safety (p. 20) section at the back of this manual.
lAlthough the AeroX Audio105 is rugged, it should be handled as a precision scientific
instrument.
3. Initial inspection
lUpon receipt of the AeroX Audio105 inspect the packaging and contents for damage. File
damage claims with the shipping company.
lCheck the ships with list to ensure all components are received.
AeroX Audio105 1

4. Specifications
Case material: Aluminum
Mount: 19 in (EIA-310) 2U rack mount
Dimensions
Front panel: 48.3cm (19in) width, 8.9cm (3.5in) height
Case: 43.2cm (17in) width, 8.1cm (3.2in) height, 27.9cm (11in) depth
Weight: 3.5kg (7.7lb)
Power requirements: 80 to 264VAC @ 25W typical, 40W maximum, 50/60Hz
11 to 24VDC @ 25W typical, 40W maximum
Temperature: –20 to +70°C
NOTE:
The display limits operational temperature range to –20 to +70°C, but a heater fitted on
the display back can increase that range. Contact factory for more information.
Humidity: 0 to 100% RH, non-condensing
4.1 Rear panel
AUDIOOUTterminal
(CH1 to CH5): Male 3-pin XLR
600 ohm balanced
Transformer isolated
Separate 3.5mm, 3-pole jack to the right of the XLR
Adjustableaudio
level maximum: +4dBu, 1.23Vrms, 1.74V peak, 3.48V peak-to-peak
AeroX Audio105 2

AUDIOIN: Female 3-pin XLR
600 ohm balanced
Transformer isolated
Separate 3.5mm, 3-pole jack to the right of the XLR
Adjustableaudio
level maximum: +4 dBu, 1.23Vrms, 1.74V peak, 3.48V peak-to-peak
PTT(push-to-talk): 5x Volt free, break before make, normally open / closed relay
contacts (contact rating 50V @ 1A), NOT protected against
overload
+5VDC, 100mA limited output used with relay contacts to
configure pull ups or pull downs.
25-way D plug
Isolatedauxiliary
digital input: 3.5 to 12V
LIGHTSterminalstrip: Four screw terminals
Volt free, break before make, normally open / closed relay
contacts (contact rating 50V @ 1A), NOT protected against
overload
Redundant 9-pin
D connector: Signals between AeroX Audio105s to control redundant
operation
USB port: USB 2.0 compatible type-A socket
ETHERNET port: RJ45 socket LAN
Supports 1000/100/10Mbps Gigabit/Fast Ethernet
115/230VAC/25W-50/50HZ,
Main power inlet: 80 to 264VAC
IEC C14 socket
50/60Hz
40W maximum
On/Off power switch
T2.0A/250V 20mm HRC fuse (same for 115/230VAC operation)
AeroX Audio105 3

11-24VDC@25W,power
input screw terminals: 40 W maximum, reverse polarity protected
On/Off power switch
Special features:
HANDSET socket: Supports FAA handset with electret microphone including bias
and speaker
RJ11
VOICE MODEM socket: Telephone dial in voice modem
RJ11
NOTE:
Hand held microphone with PTT and audio Out CH1 cannot be used as they are used to
support the FAA handset function.
4.2 Front panel
MIC PTT: Supports Electret hand-held microphone with PTT button
3.5mm jack, 3-pole
Switch closure compatible PTT input
Loudspeaker: Monitors selected audio source (user-adjustable audio volume)
Line in right channel (internal)
Line out left channel (internal).
Line out right channel (internal).
VOL/DATA dial: Volume control
Navigate menus and data entry
AeroX Audio105 4

VU LEDs: Visual indication of selected monitor audio source
6x green LEDs and one red LED to show increasing audio level from
lower LED up. For optimal performance the audio level should be high
enough to light all the green LEDs but not the red LED, or at most only
light the red LED occasionally.
1x red LED at the top to indicate audio source level is too high and audio
may suffer from distortion.
Filtered to give fast attack slow decay to make it easier to see peaks.
POWER/ERRORLED: Green
Steady state when power on and status ok
Flashing when power on but error detected. When this occurs, all VU
LEDs will be continuously lit until the error is cleared.
LCDcolordisplay: Show status
Data entry dial allows set up changes
Bright, high contrast
Long back light life
Resolution: 800 x 480 pixels
Dimensions: 95.0mm (3.742in) width, 53.9mm (2.083in) height
4.3 Microphone
Description: Push-to talk (PTT), electret / condenser microphone with screened
audio cable
Frequency range: 20 to 16,000 Hz
Sensitivity: 6.3 mV/Pa/1 kHz/±3 dB
Output impedance: 2.2 kOhm
S/N ratio: > 58 dB
Coupling capacitor: 0.1 to 4.7 µF
Operatingtemperature: 0 to 40 °C
Power supply: 1.5 to 10 VDC, 0.5 mA typical current
AeroX Audio105 5

5. Connector pin-outs
Table 5-1: AUDIO OUT, XLR male 3-pin terminals (CH1 to CH5)
Pin Description Schematic
1 ground
2 + audio
3 – audio
Shell ground
Table 5-2: AUDIO OUT, 3.5 mm, 3-pole, jack
Component Description Schematic
Sleeve – audio
Ring – audio
Tip + audio
Table 5-3: AUDIO IN, XLR female 3-pin terminal
Pin Description Schematic
1 ground
2 + audio
3 – audio
Shell ground
Table 5-4: AUDIO IN, 3.5 mm, 3-pole, jack
Component Description Schematic
Sleeve – audio
Ring – audio
Tip + audio
AeroX Audio105 6

Table 5-5: PTT 25-pin, male, D connector
Pin Description Pin Description Schematic
1PTT1 normally
closed contact 14 PTT1 common
2PTT1 normally
open contact 15 ground
3PTT2 normally
closed contact 16 PTT2 common
4PTT2 normally
open contact 17 ground
5PTT3 normally
closed contact 18 PTT3 common
6PTT3 normally
open contact 19 ground
7PTT4 normally
closed contact 20 PTT4 common
8PTT4 normally
open contact 21 ground
9PTT5 normally
closed contact 22 PTT5 common
10 PTT5 normally
open contact 23 ground
11 AUX_IN + 24 AUX_IN –
12 +5 VDC 25 +5 VDC
13 +5 VDC shell ground
Table 5-6: LIGHTS, 4-way screw terminal strip
Terminal Description Schematic
1 ground
2 Normally open contact
3 Contact common
4 Normally closed contact
AeroX Audio105 7

Table 5-7: Redundant 9-pin, male D connector
Pin Description Pin Description Schematic
1 No connection 6 No connection
2 No connection 7 No connection
3 Redundant in 8 No connection
4 Redundant out 9 No connection
5 ground shell ground
Table 5-8: Chassis main power inlet IEC C14
Pin Description Schematic
L live phase
N neutral phase
E protective earth
Table 5-9: 11-24VDC screw terminal strip
Terminal Description Schematic
G ground (0 V)
12V 11 to 24 VDC
Table 5-10: MIC PTT
Component Description Schematic
Sleeve ground
Ring Microphone audio + bias voltage
Tip Switch closure compatible input for microphone PTT switch
AeroX Audio105 8