Daniels Electronics MT-3 Series, Инструкция по эксплуатации

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Transmitter Alignment
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MT-3 FM Transmitter Mainboard Instruction Manual
IM20-MT3TXMN
MT-3 FM Transmitter Mainboard Standard Factory Configuration
The MT-3 FM Transmitter Mainboard is factory-configured as follows:
• Transmitter Standby Mode 1 (lowest standby current consumption)
• Receiver squelched; de-emphasized audio amplifier disabled
• Optional relay installed, but with active ground contact disabled
• Separate amplifier power sense outputs
mt-3 fm tranSmItter maInBoard InterConneCtIon
PIn defInItIonS
The MT-3 series transmitter employs a 48-pin Eurostandard connector for interfacing to all
transmitter power, audio and control functions. Following are the MT-3 series transmitter backplane
connections to the MT-3 Motherboard:
Pin Name Pin Name Pin Name
d2 no Connect B2 +13.8 VdC Z2 +13.8 VdC
d4 no Connect B4 mIC out Z4 mIC In
d6 no Connect B6 +9.5 VdC Z6 +9.5 VdC
d8 no Connect B8 relay Positive Z8 relay negative
d10 no Connect B10 Ptt wto Z10 Ptt wto
d12 no Connect B12 tX Standby Z12 tX Standby
d14 no Connect (ImC1) B14 Ptt nto Z14 Ptt nto
d16 no Connect (ImC2) B16 no Connect (mt-2 +9.5 V) Z16 no Connect (mt-2 +9.5 V)
d18 no Connect (ImC3) B18 Balanced Input 2 Z18 Balanced Input 1
d20 Channel Select 0 (lSB) B20 Squelched, de-emph audio In Z20 Squelched, flat audio In
d22 Channel Select 1 B22 Subtone Input 1 Z22 tX audio Control
d24 Channel Select 2 B24 Ptt output Z24 Subtone Input 2
d26 Channel Select 3 (mSB) B26 forward Power Sense Z26 VSwr reverse Sense
d28 Synth tX data (output) B28 rX monitor out Z28 direct mod Input
d30 Synth rx data (Input) B30 Ground Z30 Ground
d32 Synth Bootstrap (Input) B32 Ground Z32 Ground