FT-891 Technical Supplement
Alignment
ALIGNMENT-11
PA Unit Adjustment
Preparation
Connect the Microphone to the Microphone
jack.
C o n n e c t t h e 5 0 - O h m D u m m y L o a d a n d
Wattmeter to the ANT jack.
Disconnect the cable from J5001 on the PA Unit,
then terminate J5001 with a 50-Ohm resistor.
Disconnect the jumper plug from J5003.
Connect the DC ammeter to J5003.
Press and hold the PTT switch, while adjust
VR5001 so the DC ammeter reading is “55 mA
(±5 mA)”.
Release the PTT switch.
Disconnect the DC ammeter from J5003.
Disconnect the jumper plugs from J5005.
Connect the DC ammeter to J5005.
Press and hold the PTT switch, while adjust
VR5002 so the DC ammeter reading is “1.0 A
(±0.1 A)”.
Release the PTT switch.
Disconnect the DC ammeter from J5005.
Connect the DC ammeter to the Power Supply.
Turn both VR5003 and VR5004 fully counter-
clockwise.
Press and hold the PTT switch, while adjust
VR5003 so that the DC ammeter “1.0 A (±0.1 A)”
increase.
Adjust VR5004 so that the DC ammeter “1.0 A
(±0.1 A)” increase.
Release the PTT switch.
Re-connect the jumper plugs to J5003 and J5005.
Disconnect the DC ammeter from the Power
Supply.
Disconnect the 50-Ohm resistors from J5001,
then connect the cable to J5001.
J5001
J5003
VR5002
J5005
VR5001
VR5004
VR5003
Содержание FT-891
Страница 7: ...BLOCK DIAGRAM 1 FT 891 Technical Supplement Block Diagram...
Страница 8: ...CONNECTION DIAGRAM 1 FT 891 Technical Supplement Connection Diagram...
Страница 28: ...FT 891 Technical Supplement MAIN 1 Circuit Diagram MAIN Unit Lot 1 3...
Страница 29: ...FT 891 Technical Supplement MAIN 2 Parts Layout side A MAIN Unit Lot 1 3 1 2 3 4 5 A B C D E F 6...
Страница 30: ...FT 891 Technical Supplement MAIN 3 Parts Layout side B MAIN Unit Lot 1 3 1 2 3 4 5 a b c d e f...
Страница 31: ...FT 891 Technical Supplement MAIN 4 Circuit Diagram MAIN Unit Lot 4 6...
Страница 32: ...FT 891 Technical Supplement MAIN 5 MAIN Unit Lot 4 6 Parts Layout side A 1 2 3 4 5 A B C D E F...
Страница 33: ...FT 891 Technical Supplement MAIN 6 MAIN Unit Lot 4 6 Parts Layout side B 1 2 3 4 5 a b c d e f...
Страница 34: ...FT 891 Technical Supplement MAIN 7 Circuit Diagram MAIN Unit Lot 7 10...
Страница 35: ...FT 891 Technical Supplement MAIN 8 MAIN Unit Lot 7 10 Parts Layout side A 1 2 3 4 5 A B C D E F...
Страница 36: ...FT 891 Technical Supplement MAIN 9 MAIN Unit Lot 7 10 Parts Layout side B 1 2 3 4 5 a b c d e f...
Страница 37: ...FT 891 Technical Supplement MAIN 10 Circuit Diagram MAIN Unit Lot 11...
Страница 38: ...FT 891 Technical Supplement MAIN 11 MAIN Unit Lot 11 Parts Layout side A 1 2 3 4 5 A B C D E F...
Страница 39: ...FT 891 Technical Supplement MAIN 12 MAIN Unit Lot 11 Parts Layout side B 1 2 3 4 5 a b c d e f...
Страница 66: ...FT 891 Technical Supplement LOCAL 1 Circuit Diagram LOCAL Unit...
Страница 67: ...FT 891 Technical Supplement LOCAL 2 Parts Layout LOCAL Unit side A side B 1 2 A B 1 2 a b...
Страница 71: ...FT 891 Technical Supplement PA 1 Circuit Diagram PA Unit...
Страница 72: ...FT 891 Technical Supplement PA 2 Parts Layout side A PA Unit 1 2 3 4 5 A B C D E...
Страница 73: ...FT 891 Technical Supplement PA 3 Parts Layout side B PA Unit 1 2 3 4 5 a b c d e...
Страница 81: ...FT 891 Technical Supplement DSP 1 Circuit Diagram DSP Unit Lot 1 10...
Страница 82: ...FT 891 Technical Supplement DSP 2 Parts Layout side A side B DSP Unit Lot 1 10 1 2 3 A B 1 2 3 a b...
Страница 83: ...FT 891 Technical Supplement DSP 3 Circuit Diagram DSP Unit Lot 11...
Страница 84: ...FT 891 Technical Supplement DSP 4 Parts Layout side A side B DSP Unit Lot 11 1 2 3 A B 1 2 3 a b...
Страница 89: ...FT 891 Technical Supplement PANEL 1 Circuit Diagram PANEL Unit...
Страница 96: ...SW B 1 SW B Unit Circuit Diagram Parts Layout FT 891 Technical Supplement...