Transmitter Main Board Instruction Manual
2-13
Table 3-1
MT-3 Audio Processor Current Consumption.
Function
Current Draw
keyed / unkeyed
Switched Audio Standby
Both Microphone and Balanced Input enabled 6.0 / 0.3 mA
Only Microphone or Balanced Input enabled
4.5 / 0.3 mA
Only Auxiliary Input enabled
3.0 / 0.3 mA
Continuous Audio Standby
Both Microphone and Balanced Input enabled 6.0 / 3.5 mA
Only Microphone or Balanced Input enabled
4.5 / 1.5 mA
Only Auxiliary Input enabled
3.0 / 0.5 mA
2.4.3 Audio Processor Turn-on Time
The turn-on time of the audio processor is 25 ms. This measurement is made with the standard
factory settings with a 1 kHz tone applied to the balanced input. The turn-on time is the time it
takes the audio processor to output a stable audio signal from the time its power (+9.5 Vdc) is
switched on. The turn-on time can be virtually eliminated by configuring the audio processor for
continuous audio standby (see section 2.1.2.7 Transmitter Standby Modes).
2.4.4 Audio Processor Signals
The MT-3 Audio Processor has six audio inputs, two audio outputs and one audio control input.
Five of the audio inputs are used primarily for voice signals. The sixth, the Direct modulation input,
is used primarily for data signals. The audio control input is used to switch audio outputs so the
transmitter can transmit voice or data.
2.4.4.1
Audio Processor Outputs
Both the audio outputs, Modulation Output (P3-1) and Low Frequency / Direct Modulation Output
(P4-2), are gated by audio switches U9 and U10 respectively which are controlled by the Tx Audio
Control Input (P4-4). The audio switches operate complimentary to each other so there can ever
only be one source modulating the transmitter. In standard configuration, the Modulation Output
port is used so switch U9 is always on.
Содержание VT-3/140-SWA2
Страница 20: ...4 2 VHF Enhanced Transmitter Instruction Manual VT 3 132 174 MHz This Page Intentionally Left Blank ...
Страница 22: ...5 2 VHF Enhanced Transmitter Instruction Manual VT 3 132 174 MHz This Page Intentionally Left Blank ...
Страница 28: ...vi Transmitter Main Board Instruction Manual This Page Intentionally Left Blank ...
Страница 62: ...4 2 Transmitter Main Board Instruction Manual This Page Intentionally Left Blank ...
Страница 64: ...DEDANIELS ELECTRONICS 5 2 Transmitter Main Board Instruction Manual This Page Intentionally Left Blank ...
Страница 74: ...DEDANIELS ELECTRONICS 5 12 Transmitter Main Board Instruction Manual This Page Intentionally Left Blank ...
Страница 106: ...6 2 Audio Processor Board Instruction Manual This Page Intentionally Left Blank ...
Страница 110: ...ELECTRONICS LTD DANIELS TM 7 4 Audio Processor Board Instruction Manual This Page Intentionally Left Blank ...
Страница 114: ...8 4 This Page Intentionally Left Blank ...
Страница 120: ...9 10 This Page Intentionally Left Blank ...
Страница 123: ...ELECTRONICS LTD DANIELS TM Audio Processor Board Instruction Manual 9 13 This Page Intentionally Left Blank ...
Страница 126: ...ELECTRONICS LTD DANIELS TM 9 16 Audio Processor Board Instruction Manual This Page Intentionally Left Blank ...
Страница 128: ...10 2 Audio Processor Board Instruction Manual This Page Intentionally Left Blank ...
Страница 134: ...This Page Intentionally Left Blank ...
Страница 150: ...DEDANIELS ELECTRONICS 4 4 VHF Amplifier Instruction Manual VT 3 132 174 MHz This Page Intentionally Left Blank ...
Страница 152: ...4 6 VHF Amplifier Instruction Manual VT 3 132 174 MHz This Page Intentionally Left Blank ...
Страница 157: ...VHF Amplifier Instruction Manual VT 3 132 174 MHz 6 1 6 REVISION HISTORY ISSUE DATE REVISION 1 Jul 97 First Issue ...
Страница 158: ...6 2 VHF Amplifier Instruction Manual VT 3 132 174 MHz ISSUE DATE REVISION ...
Страница 168: ...1 6 Enhanced AM FM Synthesizer Instruction Manual OS R T 3 A H 29 470 MHz This Page Left Intentionally Blank ...
Страница 178: ...2 10 Enhanced AM FM Synthesizer Instruction Manual OS R T 3 A H 29 470 MHz This Page Intentionally Left Blank ...
Страница 186: ...3 8 Enhanced AM FM Synthesizer Instruction Manual OS R T 3 A H 29 470 MHz This Page Intentionally Left Blank ...
Страница 222: ...5 16 Enhanced AM FM Synthesizer Instruction Manual OS R T 3 A H 29 470 MHz This Page Intentionally Left Blank ...
Страница 228: ...iv VHF Transmitter Channel Designation Tables VT 3 132 174 MHz This Page Intentionally Left Blank ...
Страница 236: ...1 8 VHF Transmitter Channel Designation Tables VT 3 132 174 MHz This page intentionally left blank ...
Страница 261: ...VHF Transmitter Channel Designation Tables VT 3 132 174 MHz 5 1 5 REVISION HISTORY ISSUE DATE REVISION 1 May 98 Issue 1 ...
Страница 262: ...5 2 VHF Transmitter Channel Designation Tables VT 3 132 174 MHz This Page Intentionally Left Blank ...