Aquila ATO1, Maintenance Manual

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MAINTENANCE MANUAL
AQUILA AT01
Aviation by Excellence AG
SPEECH COMMUNICATION - DESCRIPTION
1.
A. This section covers the portion of the system which utilizes voice modulated electromagnetic
waves to transmit and/or receive messages from air-to-air, or air-to-ground installations. It includes
the VHF speech communications portion of the GARMIN SL30/SL40.
The SL30 is a combination of a VHF communications transceiver and a VHF navigation receiver
which includes VOR, Localizer and Glideslope receiver as well as a build-in course deviation
indicator. For information on the navigation portion of the SL30, refer to the SL30 NAV/COM
Pilot's Guide, P/N 190-00486-00, latest revision. The SL40 is a derivative of the SL30 providing only
its communication functions. Both, the SL30 and SL40 contain an independent, voice activated
INTERCOM unit with a separate power supply. This separate electrical circuit is protected by an
extra circuit breaker labelled “Intercom”. The electrical circuit of the NAV/COM transceiver portion
of both devices are protected by a circuit breaker labelled “COM/NAV 1”, or “COM/NAV 2” in case
the respective unit is installed as a second NAV/COM transceiver.
B. For a complete description of the SL30/SL40, refer to the GARMIN SL30 and SL40 Pilot's Guide,
P/N 560-0403-01 (SL30) or P/N 560-0954-XX (SL40), latest revision.
C. Specifications
(1) Physical
Unit Size: H/W/D – 33 mm (1.30 in.) / 159 mm (6.25 in.)/ 267 mm (10.5
in.)
Unit Weight: SL30: 1.02 kg (2.25 lbs), unit only SL40: 0.9 kg (2 lbs)
(2) Power Input: 10 to 40 VDC
(3) Environmental Temperature: -20°C to +55°C (operating range)
(4) Display SL30: 32 character high-intensity alphanumeric LED display
SL40: 16 character high-intensity alphanumeric LED display
(5) VHF COM Channels: 760 (25 kHz spacing)
Frequency Range: 118.000 MHz to 136.975 MHz
Transmit Power:
8 watts carrier power
2.
A. Figure 01 shows the front view of the NAV/COM Transceiver SL30 with a short explanation. Figure
02 shows the front view of the COM Transceiver SL40.
B. SL30 VHF Speech Communication Portion / SL40 – Description
(1) The knob on the left side of the SL30 controls power on/off, volume, and squelch test. To turn
the power on, the knob has to be rotated clockwise past the detent. Once the transceiver is
turned on, clockwise rotation of the knob increases the speaker and headphone volume level,
counter-clockwise rotation reduces the volume level. The frequency tuning is accomplished
by rotating the large (for MHz settings) and small (for kHz settings) knobs to select the
desired standby frequency. The active frequency is displayed on the left-most side of the
display, the standby frequency is indicated on the right side adjacent to the active frequency.
To switch between the frequencies, the frequency flip/flop button has to be pressed. A
photocell located on the upper left side of the display automatically adjusts the brightness of
the display to the actual light conditions.
Introduction
Description and Operation
23-10-00
Page 01
30.04.08
EFFECTIVITY
Aircraft equipped with Garmin SL30/SL40
Transceiver
Communications