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Filser Electronic GmbH

 

Gewerbestraße 2 

                      

  ATR 720 C   Communications Transceiver

 

86875 Waal   

                                                                                                                                       

    page  12 

2.6 

Cabling 

1. The length and routing of the external cables must be carefully studied and planned prior to in-

stallation. Avoid sharp bend placing cables to near the aircraft control cables. 

2. Fabricate the external cables in accordance with the installation drawing that fulfills the system 

requirement. 

N O T E – 

 

Use good quality stranded wire that will not support a flame and with al least 600 volt insu-
lation. It is recommended that the mike audio line is shielded. 

 

Since other radio equipment will possibly utilize the same speaker circuits for muting, speaker selection and 

microphone switching must be devised by the installing agency. 

 

 

 

Figure 2.3 Outline and mounting Drawing 

All dimensions  in mm

Содержание ATR 720 C

Страница 1: ...ATR 720 C VHF TRANSCEIVER INSTALLATION MANUAL Handbook No 003 8000 Issue 01 04 1998 720C installation Man DOC...

Страница 2: ...RPOSE OF EQUIPMENT 3 1 3 DESIGN FEATURES 3 1 4 POWER REQUIREMENTS 4 1 5 Technical Characteristics 4 1 6 Units and Accessories Supplied 6 1 7 Accessories Required but not Supplied 6 2 SECTION II Instal...

Страница 3: ...quelch adjustment Squelch threshold automatically adjusts to open on readable signals SQ switch in pulled opens squelch to test COMM receiver sensitivity and to listen ex tremely weak signals Liquid C...

Страница 4: ...Specification Characteristic RTCA COMPLIANCE Comm Transmitter RTCA Do 157 Class 4 EUROCAE ED 24 Comm Receive RTCA Do 156 Class C EUROCAE ED 23 Environmental Temperature Range Altitude RTCA Do 160A C4A...

Страница 5: ...ratio Selectivity Typical 6 dB at 8 kHz 70 dB at 25 kHz Spurious Responses Down al least 60 dB Squelch Automatic squelch carrier to noise with manual disable and carrier squelch override AGC From 5 V...

Страница 6: ...ting hardware etc 1 7 Accessories Required but not Supplied Communication antenna and cables Headphones and speaker Headphones Low impedance types 200 to 1000 ohms Speaker Voices coil impedance 4 to 8...

Страница 7: ...ory performance from the equipment 2 2 Unpacking and Inspecting Exercise extreme care when unpacking each unit Make a visual inspection of each unit for evi dence of damage incurred during shipment If...

Страница 8: ...Filser Electronic GmbH Gewerbestra e 2 ATR 720 C Communications Transceiver 86875 Waal page 8 Figure 2 1 Figure 2 1 BENCH TEST SET UP...

Страница 9: ...unter as dia gramed in Figure 2 1 6 Connect the wattmeter to J 5001 Key the transmitter and talk into the microphone The watt meter indicator should react with a wiggle 7 With the transmitter keyed us...

Страница 10: ...talk into the microphone 4 Adjust SIDETONE control 5201 for a comfortable listening level from the headphones 5 Disconnect the Unit from the test set up 200 Sidetone Control 255 Mike Gain Control Fig...

Страница 11: ...Figure 2 3 The rearward mounting holes must be attached to a structural member of the panel by means of support brackets in or der to avoid vibration 5 Slide the ATR 720 C into the rack and secure by...

Страница 12: ...the external cables in accordance with the installation drawing that fulfills the system requirement N O T E Use good quality stranded wire that will not support a flame and with al least 600 volt ins...

Страница 13: ...Filser Electronic GmbH Gewerbestra e 2 ATR 720 C Communications Transceiver 86875 Waal page 13 FIGURE 2 6 1 INTERCONNECTION DIAGRAM...

Страница 14: ...trol VOL The Volume control VOL is activated at the multifunctio control by turning it clockwise for the desired volume 2 7 2 4 COMM Keyboard The COMM Keyboard consists of five function keys and 10 nu...

Страница 15: ...LATION CHECKOUT An operational performance flight test is recommended after the installation is completed to in sure satisfactory performance of the equipment in its normal environment To check the co...

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