Codan Radio Communications VT-3-150-SN User Manual
Transmitter Main Board Instruction Manual
3-9
• Jumper JU10: not installed
Balanced input flat audio response enable.
• Jumper JU11: 'y' position
Balanced input to auxiliary audio circuit enable.
• Jumper JU12: not installed
Tone/Digital input to auxiliary audio circuit enable.
• Jumper JU13: not installed
Direct modulation input to auxiliary audio circuit enable.
• Jumper JU14: not installed
Auxiliary input preemphasis response enable.
• Jumper JU15: not installed
Auxiliary input flat audio response enable.
• Jumper JU16: installed
Subtone input 1 audio path select.
• Jumper JU17: not installed
MT-2 Temperature compensation bypass.
• Jumper JU18: not installed
Continuous data mode selection.
• Jumper JU19: not installed
Power source for audio switches.
• Jumper JU20: not installed
Power source for Q2.
• Jumper JU21: not installed
Power source for bilateral switch U9.
• Jumper JU22: 'x' position
Audio output to lowpass filter
• Jumper JU23: not installed
Direct modulation input to subtone 2 enable.
• Jumper JU24: installed
Lowpass filter response select.
• Jumper JU25: installed
Lowpass filter response select.
• Jumper JU26: installed
Lowpass filter response select.
• Jumper JU27: not installed
Direct modulation input audio path select.
• Jumper JU28: not installed
Amplified direct modulation bypass.
• Jumper JU29: not installed
Amplified direct modulation input DC coupled enable.
• Jumper JU30: not installed
Amplified direct modulation audio path select.
• Jumper JU31: not installed
Audio output AC coupled (MT-3 synthesized transmitters)
• Jumper JU32: not installed
Audio output AC coupled (MT-3 crystal transmitters).
• Jumper JU33: installed
Audio ouput AC coupled.
• Jumper JU34: not installed
Audio output from direct modulation circuits select.
• Jumper JU35: not installed
Direct Modulation output source select.
• Jumper JU36: 'y' position
Power source select for AGC Preamplifier.
• Jumper JU37: not installed
Direct modulation output enable.
• Jumper JU38: not installed
Subtone 2, DC coupled, to direct modulation output select.
• Jumper JU39: not installed
Direct modulation low input impedance enable.
• Jumper JU40: installed
Power for Microphone preamplifier enable.
• Jumper JU41:
not used.
• Jumper JU42: not installed
Processed audio path to dircet modulation output.
• Jumper JU43: installed
Bilateral switch U9 bypass enable.