User manual GARMIN G1000 BEECHCRAFTA36 G36 AUDIOPANEL PILOTS GUIDE

[. . . ] G1000 TM Audio Panel Pilot's Guide for the Beechcraft A36/G36 Record of Revisions Revision Date of Revision Revision Page Range A 07/20/05 6-1 ­ 6-11 Description Initial release. Garmin G1000 Pilot's Guide for the Beechcraft A36/G36 190-00573-00 Rev. A DESCRIPTION 6. 1 INTRODUCTION This Pilot's Guide describes the Garmin GMA 1347 audio panel and its operating instructions. The Garmin GMA 1347 is an audio control panel and marker beacon system. Pressing the audio panel keys controls audio selection of COM, NAV and intercom. [. . . ] The speaker volume is adjustable above and below a nominal value. Contact a Garmin-authorized service center for details. 190-00573-00 Rev. A Garmin G1000 Pilot's Guide for the Beechcraft A36/G36 6-5 OPERATION MARKER BEACON RECEIVER Description and Operation The audio panel marker beacon is used as part of the ILS system. The marker beacon receiver is always ON and receives at 75 MHz. The audio panel provides a marker audio muting capability. The receiver detects the three (3) marker tones, outer, middle and inner, and illuminates the appropriate marker beacon indicators. The marker indicators are located to the left of the Altimeter on the PFD (Figure 6. 2. 3). The outer marker frequency is 400 Hz with a blue indicator, the middle marker frequency is 1300Hz with an amber indicator and the inner marker frequency is 3000 Hz with a white indicator. Refer to Table 6. 2. 1 for a summary of the marker beacon signal characteristics. When the MKR/MUTE key is selected, the annunciator light illuminates and the audio signal can be heard over the speaker or headsets during marker reception. When the MKR/MUTE key is annunciated and a marker beacon tone is received, pressing the MKR/MUTE key mutes the audio but does not affect the annunciators. The audio returns when the next marker signal is received. If the MKR/MUTE key is pressed during signal reception, while marker beacon audio is muted, marker audio and the MKR/MUTE key annunciator light are turned off. NOTE: The marker beacon receiver indicators operate independently of the marker beacon audio and cannot be turned off. The marker beacon audio output level is adjustable by a Garmin-authorized service center. NOTE: The GMA 1347 is capable of driving external marker beacon lamps. Marker Beacon Signal Sensitivity The HI SENS key can be pressed for increased marker beacon signal sensitivity. The HI SENS function is used to receive an earlier indication of nearing a marker during an approach. Figure 6. 2. 2 Marker Beacon Keys MARKER BEACON VOLUME ADJUSTMENT The level of marker beacon receiver audio can be adjusted by a Garmin-authorized service center, if desired. 6-6 Garmin G1000 Pilot's Guide for the Beechcraft A36/G36 190-00573-00 Rev. A OPERATION Beacon Outer Marker Middle Marker Airway/Inner Marker Audio Frequency 400 Hz 1, 300 Hz 3, 000 Hz Audio Keying ------ ·--·-- ···· Rate 2 dashes per second 95 dot-dash combinations per minute 6 dots per second Lamp Color Blue Amber White Table 6. 2. 1 Marker Beacon Signal Characteristics Inner Marker Middle Marker Outer Marker Figure 6. 2. 3 Marker Beacon Signal Indicator Lights on the PFD NAVIGATION RADIOS Pressing NAV1, NAV2 or optional DME selects and deselects the radio source and the annunciator (Figure 6. 2. 4). Selected audio can be heard over the headset and the speakers. All radio keys can be selected individually or together. When no further navigation radio audio is heard, the amount of background noise is reduced by the Master Avionics Squelch (MASQ) feature. 190-00573-00 Rev. A Optional on A36/G36 aircraft Disabled on A36/G36 aircraft Figure 6. 2. 4 Navigation Radio Keys 6-7 Garmin G1000 Pilot's Guide for the Beechcraft A36/G36 OPERATION INTERCOM SYSTEM (ICS) ISOLATION The intercom system (ICS) provides four (4) isolation modes: ALL, PILOT, COPILOT and CREW. The desired mode can be selected or deselected using the PILOT and COPLT keys. The four (4) possible ICS isolation states are summarized in the table below. CREW Mode CREW mode is selected when both the PILOT and COPLT keys are annunciated. In CREW mode, both the pilot and copilot can hear the selected radios and communicate with each other, while the passengers are isolated but can communicate with each other. PILOT Mode PILOT isolation is selected when only the PILOT key is annunciated. [. . . ] When toggling, either one (1) or two (2) beeps can be heard; one (1) beep indicates that music muting is enabled, two (2) beeps indicate music muting is disabled. MASTER AVIONICS SQUELCH (MASQ) MASQ (Master Avionics Squelch) reduces ambient noise from the aircraft radios. When no audio is detected, MASQ processing further reduces the amount of background noise from the radios. The Master Avionics Squelch (MASQ) threshold level can be adjusted or disabled by a Garmin-authorized service center. 6-10 Garmin G1000 Pilot's Guide for the Beechcraft A36/G36 190-00573-00 Rev. A OPERATION DIGITAL CLEARANCE RECORDER WITH PLAYBACK CAPABILITY The audio panel contains a digital clearance recorder that plays back up to 2. 5 minutes of COM signal recording. [. . . ]