manualshive.com logo in svg

Daniels Electronics Ltd. A21-TX3-00, Instruction Manual

Share
Download
Daniels Electronics Ltd. A21-TX3-00 Instruction Manual Download Page 27

DANIELS

DE

ELECTRONICS

J6

J7

Installed

Not Installed

'Y' Position

'X' Position

J18

Installed

Installed

'Y' Position

'X' Position

'X' Position

'X' Position

MODE 1

MODE 2

MODE 3

MODE 4

AM/FM STANDBY MODES

STANDARD/LOW FREQUENCY MODULATION

STD MOD VER.

LF MOD VER.

DESIGN

J6
J7
J18

Installed
'X' Position
'X' Position

Not Installed
'Y' Position
'Y' Position

VICTORIA B.C.

DE

DANIELS 

ELECTRONICS 

Transmitter Main Board Instruction Manual

5-5

5.2.3        Transmitter Main Board Schematic Diagram

DWG REV DATE:  9 OCTOBER 1998

DWG No.:   MT3TXMNM4B

Y

X

NC

NC

NC

M

M

M

M

L

L

L

X

BOARD REV:         1.7  

BOARD No.:  43-920917

TP34

C23

C17-C19

LPF6,LPF7

LPF11,LPF13

Q2

C9,C11,C16

Q11

R47

U8

J35

U5

R27

J10,J11

J1,J5,J8

FSW4

F1

RELAY1

HIGHEST REFERENCE DESIGNATORS

LPF35

T1

D8

-----

-----

-----

UNUSED REFERENCE DESIGNATORS

TIME OUT TIMER

APPROX 0.8 VDC

JF3-4

JF3-3

JF3-2

JF3-1

TO
J25 PIN3

TO

JP1-7

X

Y

X

Y

X

Y

X

Y

X

Y

JP1-5

JP1-4

JP1-6

JP1-2

JP1-1

JP1-3

X

Y

Y

X

Y

X

Y

X

Y

UNDER U6

X

Y

X

Y

X

Y

TITLE:     MT-3 TRANSMITTER BOARD SCHEMATIC DIAGRAM 

JA5-1

JA5-2

JA5-3

JA5-4

JA2-4

JA3-1

JA4-2

JA3-2

JA4-4

JA1-4

JA3-3

JF2-3

JF2-4

JF1-4

JA3-4

JA2-3

JA4-3

JA4-1

JA2-1

JA2-2

JA1-1

JA1-2

JA1-3

APRVD:

DWG BY:  MIKE GAUBE 

DATE:    8 APRIL 1992

JF1-1

JF1-3

JF2-2

JF1-2

JF2-1

FRONT PANEL
N CONNECTOR

BACKPLANE 
CONNECTOR

 

LPF

LPF16

LPF

LPF17

LPF

LPF22

LPF

LPF5

LPF

LPF4

LPF

LPF19

LPF

LPF18

LPF

LPF20

LPF

LPF27

LPF

LPF21

LPF

LPF33

LPF

LPF12

LPF

LPF8

LPF

LPF10

LPF

LPF14

LPF

LPF26

LPF

LPF15

Z12

TX STANDBY

B12

PTT OUTPUT

B24

Z14

PTT NTO

B14

NC

D4

NC

D6

NC

D2

RLY POS

B8

NC

D8

NC

D10

NC

D12

Z10

PTT WTO

B10

DIRECT MOD
INPUT

Z28

SQL FLAT
INPUT

Z20

SUBTONE
INPUT #2

Z24

SUBTONE
INPUT #1

B22

BALANCED
INPUT #1

Z18

BALANCED
INPUT #2

B18

MIC IN

Z4

MIC OUT

B4

SQL DE-EMP
INPUT

B20

Z6

+9.5V CONTINUOUS

B6

GROUND

B30

GROUND

B32

GROUND

Z32

IMC1

D14

IMC2

D16

IMC3

D18

NC

B16

NC

Z16

RX MONITOR

B28

RX DATA IN

D30

TX DATA OUT

D28

BOOTSTRAP

D32

CHANNEL SEL 0
(Least Significant Bit)

D20

CHANNEL SEL 1

D22

CHANNEL SEL 2

D24

CHANNEL SEL 3
(Most Significant Bit)

D26

TX AUDIO CONTROL

Z22

VSWR REVERSE

Z26

FORWARD POWER
FAIL INDICATOR

B26

+10 TO +17 VOLTS
+13.8 VDC NOMINAL

B2

Z2

LPF

LPF2

LPF

LPF1

LPF

LPF34

LPF

LPF35

LPF

LPF23

LPF

LPF29

LPF

LPF28

LPF

LPF25

LPF

LPF24

LPF

LPF32

LPF

LPF31

LPF

LPF30

10uF

C3

1.0uF

C4

TP5

TP2

TP4

TP3

TP1

10nF

C13

TP6

TO ALL 9.5V SUPPLY POINTS

1.0uF

C10

J9

J16

J17

TP20

TP18

TP22

TP17

TP19

TP21

NOT INSTALLED

R28

9.5V

27K4

R2

BYD17J

D2

BYD17J

D1

J3

1

9

8

7

4

3

2

10

RELAY1

J4

BAS16

D7

10R0

R1

27K4

R4

1K0

R3

TP27

2

3

1

MC33172

a

U1

4

5

6

7

8

MC33172

b

U1

BYD17J

D3

27K4

R6

BYD17J

D4

BAS16

D8

10R0

R5

1K0

R7

27K4

R8

TP28

10nF

C6

100K0

R10

221K0

R9

9.5V

9.5V

TP26

8

9

10

MC14081

c

U2

13

12

11

MC14081

d

U2

100nF

C8

9.5V

5

6

4

14

7

MC14081

b

U2

1

2

3

MC14081

a

U2

9.5V

G

D

S

D15N06V

Q9

E

B

C

BC807-25

Q8

10K0

R18

TP11

E

B

C

BC817-25

Q1

E

B

C

BC817-25

Q3

9.5V

9.5V

E

B

C

BC817-25

Q4

BYD17J

D5

BYD17J

D6

J6

TP7

G

D

S

D5P06V

Q5

J21

 Vin

 Error

 Sd

 Gnd

Vout 

Sense 

  5V Tap 

FB 

8
5
3
4

1
2
6
7

LP2951

U6

15K0

R30

9.5V

10nF

C14

82K5

R29

4.7uF

C15

J15

J13

J14

E

B

C

PZT2222A

Q10

1K0

R26

27K4

R25

J12

9.5V

TO ALL 13.8V SUPPLY POINTS

13.8V

10uF

C1

1.0uF

C2

TP8

TP15

13.8V

TP9

TP16

TP14

1K0

R17

J18

10K0

R16

TP23

TP24

TP10

9.5V

9.5V SWITCHED

J7

TO ALL 9.5V SWITCHED
SUPPLY POINTS

TO ALL 9.5V PTT SWITCHED
SUPPLY POINTS

9.5V PTT SWITCHED

9.5V PTT SWITCHED

MICROPHONE INPUT

BALANCED
INPUT

+9.5V

+8.0V SWITCHED

TONE/DIGITAL
INPUT

AUDIO OUTPUT

SUBTONE #1 INPUT

SUBTONE #2 INPUT

DIRECT MODULATION
INPUT

AUDIO

SUBTONE #2
OUTPUT

TOT 
INPUT

TOT 
OUTPUT

GND

GND

MT-3 AUDIO

PROCESSOR 

13.8 V

QUALIFIED
PTT

PTT

GND

CONTROL

2

1

6

4

5

3

AUDIO XFMR

T1

10nF

C12

27K4

R13

27K4

R12

27K4

R11

10K0

R19

10K0

R15

1

2

10K0

R14

68K1

R20

10K0

R23

68K1

R24

100nF

C5

10nF

C7

J20

J22

J23

J24

J19

J25

+9.5V INPUT

+9.5V OUTPUT

LED ENA

GROUND

MIC PTT WTO

MIC PTT NTO

MIC AUDIO

MT-3 FRONT PANEL BOARD

RX AUDIO

SPARE

+13.8V

GROUND

RX MON

13.8V

RF IN

RF OUT

+9.5V

+13.8V

ENA

GND

FOR

REV

OR

MT-3 VHF/UHF AMPLIFIER MODULE 

AUDIO

IN

XXXX

LPF

LPF3

F1

OPTIONAL

RLY NEG

Z8

68K1

R22

9.5V

E

B

C

BC817-25

Q6

TP30

TP29

G

D

S

D5P06V

Q7

10K0

R21

100nF

C22

221k

R39

C23
100nF

221k

R44

221k

R45

221k

R46

221k

R43

15k0

R41

27k4

R35

68k1

R33

221k

R31

1k00

R32

221k

R36

27k4

R34

100k

R38

1k00

R37

OPT

R42

J26

J27

J32

J28

100nF

C21

3

2

8

4

1

a

MC33172

U7

Q11

BC807-25

SET

RESET

IN1

OUT1

OUT2

BYP

CLK INH

VSS

VDD

MONO

OSC INH

DEC

D

C

B

A

MC14536B

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10
9

U8

TP25

5

6

7

MC33172

U7b

9.5V

4.7uF

C20

1k00

R47

10k0

R40

J29

J31

J35

J33

J34

TO ALL TOT 9.5V

TOT 9.5V

TOT 9.5V

TOT 9.5V

TP12

TP31

TP32

TP13

TP33

TP34

GROUND

Z30

OC-3 CRYSTAL CONTROL MODULE

P1-18 P1-20 P1-12 P1-19 P1-11 P2-2 P1-17 P1-9

P3-2

P3-1

P2-5

P1-10

P1-7

P1-3

P2-3

P1-16

P1-8

P1-15

P1-14

P1-6

P1-13

P1-5

P1-4

P1-2

P1-1

P2-1

P2-4

P2-6

RF
OUTPUT

REFERENCE
INPUT

OS-3 SYNTHESIZER

OR

0 1

2

3

4

5

6

7
8

9

MSD

FSW1

1

3

5

7

2

4

6

8

9

11 13 15 10 12 14 16

U3
MMAD1108

7

5

3

1

8

6

4

2

15 13 11 9

16 14 12 10

U4
MMAD1108

0 1

2

3

4

5

6

7
8

9

FSW2

0 1

2

3

4

5

6

7
8

9

FSW3

0 1

2

3

4

5

6

7
8

9

LSD

FSW4

9.5V SWITCHED

J2

PTT

TOT INPUT

TOT OUTPUT

QUALIFIED PTT

QUALIFIED PTT

JP1-7

JP1-7

2.2 Vdc

9.4Vdc

2.9 Vdc

2.9Vdc

Summary of Contents for A21-TX3-00

Page 1: ...reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written consent of Daniels Electronics Ltd DE is a registered trademark of Daniels Electronics Ltd registered in the United States Patent and Trademark Office Issue 3 Previous Issue 2 Issue Date December 98 Previous Issue Date March 98 Danie...

Page 2: ...nature Date NOTE The user s authority to operate this equipment could be revoked through any changes or modifications not expressly approved by Daniels Electronics Ltd The design of this equipment is subject to change due to continuous development This equipment may incorporate minor changes in detail from the information contained in this manual ...

Page 3: ... 3 2 1 3 Audio Circuits 2 4 2 1 3 1 Microphone Audio 2 5 2 1 3 2 Received Audio 2 5 2 1 4 Channel Selection 2 5 2 1 4 1 Synthesized Transmitter 2 5 2 1 4 2 Crystal Controlled Transmitter 2 5 2 1 5 Amplifier Circuits 2 6 2 2 MT 3 Front Panel Board 2 6 2 3 MT 3 AM Audio Processor 2 6 2 3 1 General 2 6 2 3 2 Power Requirements 2 6 2 3 3 Audio Circuitry 2 7 2 3 4 PTT Time Out Timer 2 8 3 TRANSMITTER A...

Page 4: ...MT 3 AM Transmitter Main Board Component Layout Bottom 5 4 5 2 3 MT 3 AM Transmitter Main Board Schematic Diagram 5 5 5 3 MT 3 Front Panel Board 5 6 5 3 1 MT 3 Front Panel Board Component Layout 5 6 5 3 2 MT 3 Front Panel Board Schematic 5 7 5 4 MT 3 AM Audio Processor Electrical Assembly 5 8 5 4 1 MT 3 AM Audio Processor Component Layout 5 8 5 4 2 MT 3 AM Audio Processor Schematic Diagram 5 9 6 P...

Page 5: ...ain Board and are routed to the other modules The front and rear back plates are attached to the Transmitter Main Board and together with the extruded aluminum shell as discussed in the assembly section of the Transmitter Manual form the transmitter enclosure 1 2 Performance Specifications 1 2 1 General Type MT 3 AM Series Transmitter Compatibility VT 3A Series Amplifier OCT 3 Crystal Oscillator O...

Page 6: ...in Board Instruction Manual 1 2 2 Audio Specifications Audio Input 30 to 0 dBm into a 600Ω balanced load Audio Response Flat audio 1 3 dB 300 Hz 3 kHz Audio Distortion Less than 3 40 C to 60 C at 30 modulation Less than 5 40 C to 60 C at 90 modulation ...

Page 7: ...ush To Talk PTT inputs that key the transmitter are active low 2 0 Vdc One PTT input is on the front panel microphone connector The other two PTT inputs PTT WTO PTT With Time Out Timer and PTT NTO PTT No Time Out Timer are on the backplane connector of the transmitter board If required the microphone s PTT input can be configured to activate the transmitter s Time Out Timer TOT An isolated PTT inp...

Page 8: ... NTO signal which is normally high falls below 2 0 Vdc the transmitter is keyed As long as the PTT NTO signal remains below 2 0 Vdc the transmitter will remain keyed The transmitter is disabled when the PTT NTO signal rises above 2 3 Vdc The PTT NTO threshold of approximately 2 Vdc 0 3 Vdc hysteresis is set by U1b R5 R6 R7 R8 R9 and R10 while diodes D3 and D4 provide overvoltage protection for U1b...

Page 9: ... all of the PTT inputs When the transmitter is keyed Q1 is turned off and subsequently transistors Q3 Q4 and Q6 are turned on Transistors Q3 Q4 and Q6 provide three different functions Q3 provides the active low signal for the synthesizer or crystal module PTT input Q4 turns on Q5 which turns on the 9 5 Vdc Switched supply Q6 turns on Q7 which turns on the 9 5 Vdc PTT Switched supply The 9 5 Vdc S...

Page 10: ... Synthesized typically 19 mA Crystal Controlled typically 11 mA start up time Synthesized typically 40 ms Crystal Controlled typically 8 ms MODE 4 Jumper J6 in jumper J7 in the x position jumper J18 in the x position the audio processor is enabled all of the time the synthesizer or crystal module is enabled all of the time standby current Synthesized typically 163 mA Crystal Controlled typically 2...

Page 11: ... 1 Synthesized Transmitter Eight backplane connections are used to communicate with the synthesizer unit Pins D28 D30 and D32 are used in house to program the synthesizer Channel select lines pins D20 D22 D24 and D26 are used once the synthesizer is programmed to select one of 16 channels If the channel select lines are all low channel 0 the channel for the synthesizer is read from switches FSW1 m...

Page 12: ...x position MIC PTT NTO no time out timer factory setting y position MIC PTT WTO with time out timer Refer to section 5 3 2 MT 3 Front Panel Board Schematic Diagram 2 3 MT 3 AM Audio Processor 2 3 1 General The MT 3 AM Audio Processor is a versatile circuitboard that can provide several types of audio processing The module also has an on board programmable push to talk PTT time out timer TOT on an ...

Page 13: ...the input level say a 20 dB drop in input level will produced a 20 dB increase in gain The output will remain fixed at a constant level without clipping and distortion Automatic Level Control The input signals are adjusted by the pots R1 R16 The variable gain cell in U1a is used as a voltage controlled amplifier so that if the power supply 13 8Vdc has changed the output level will change in order ...

Page 14: ...low again in order to rekey the transmitter The time out duration is jumper selectable from 1 second to 8 hours The table below shows the time out duration in minutes for the various jumper settings which are listed as enabled E jumper shorted in or disabled D jumper left open out The standard factory setting of 5 minutes is shown in bold type in the table below D DISABLED no solder jumper install...

Page 15: ...tive ESD protection 3 3 Printed Circuitboard Numbering Convention To ease troubleshooting and maintenance procedures Daniels Electronics Limited has adopted a printed circuitboard PCB numbering convention in which the last two digits of the circuitboard number represent the circuitboard version For example PCB number 43 912010 indicates circuitboard version 1 0 PCB number 50002 02 indicates circui...

Page 16: ...J2 x position Optional relay configuration Jumper J3 not installed Optional relay configuration Jumper J4 y position Optional relay configuration Jumper J6 installed Transmitter standby mode select Mode 3 Jumper J7 x position Audio processor standby mode select Jumper J9 not installed Receiver audio ac dc input coupling Jumper J12 not installed Not applicable Jumper J13 not installed Not applicabl...

Page 17: ...omatic Level Control enabled Jumper JU4 not installed Time out time power supply optional Jumper JU5 y position Voice application Jumper JU6 y position Voice application Jumper JU7 not installed Modulation configuration Jumper JU8 y position Automatic Level Control enabled Jumper JU9 installed Power AMC and Microphone enabled 3 6 MT 3 AM Transmitter Board Alignment 3 6 1 General Before proceeding ...

Page 18: ...TP19 audio processor continuous 9 5 Vdc TP20 not used TP21 audio processor supply 8 Vdc selected by J7 TP22 not used TP23 synthesizer receive data line 0 Vdc TP24 synthesizer transmit data line 5 Vdc TP25 Q1 collector inactive 0 Vdc active 9 5 Vdc TP26 U2d output inactive 9 5 Vdc active 0 Vdc TP27 U1a output PTT WTO inactive 9 5 Vdc active 0 Vdc TP28 U1b output PTT NTO inactive 9 5 Vdc active 0 Vd...

Page 19: ...onent layout is shown in section 5 4 1 3 8 2 MT 3 AM Audio Processor Adjustment note clockwise rotation of controls increase signal levels 1 Before adjusting the audio board confirm that the transmitter frequency is correct 2 Unscrew and slide out the case of the transmitter Locate the Tx Audio Board 3 Connect the transmitter RF Output to a Radio communications test set 4 Connect the 600 ohm input...

Page 20: ...main at the same level of 90 7 and distortion should be less then 3 If not adjust the pot R4 on the Audio Processor Board to achieve this This step verifies the correct operation of the AMC 13 Repeat steps 7 and 9 if required 14 Supply a 1 kHz 10 dBm signal to the microphone input Note the level restriction of 25 dBm to 0 dBm 15 Adjust the Microphone Input Level Adjust pot R1 to achieve 50 of RF s...

Page 21: ...N C B8 Relay Positive Z8 Relay Negative D10 N C B10 PTT WTO Z10 PTT WTO D12 N C B12 Tx Standby Z12 Tx Standby D14 N C B14 PTT NTO Z14 PTT NTO D16 N C B16 No Connect MT 2 9 5V Z16 No Connect MT 2 9 5V D18 N C B18 Balanced Input 2 Z18 Balanced Input 1 D20 Channel Select 0 LSB B20 Squelched De emph Audio Z20 Squelched Flat Audio D22 Channel Select 1 B22 Subtone Input 1 Z22 Tx Audio Control D24 Channe...

Page 22: ...DE DANIELS ELECTRONICS 4 2 MT 3 AM Transmitter Main Board Instruction Manual This Page Intentionally Left Blank ...

Page 23: ... SIDE 2 600 OHMS BALANCED INPUT SIDE 1 SUBTONE INPUT 1 SUBTONE INPUT 2 SQL FLAT INPUT DIRECT MOD INPUT PTT WTO TX STANDBY NO2 COMMON 2 NC2 RLY POS RLY NEG NC 2 NC 1 COMMON 1 PTT NTO PTT OUTPUT PTT OUTPUT TX STANDBY PTT 9 5 VDC PTT SWITCHED 9 5 VDC SWITCHED J3 Y X J7 9 5 VDC PTT SWITCHED 9 5 VDC SWITCHED 8 10 9 1 7 9 8 10 4 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5...

Page 24: ...DE DANIELS ELECTRONICS 5 2 MT 3 AM Transmitter Main Board Instruction Manual This Page Intentionally Left Blank ...

Page 25: ...R42 OPT FSW4 BCD 10 FSW3 BCD 10 FSW2 BCD 10 FSW1 BCD 10 MSD LSD Components Not Installed 12B SYNTHESIZER GROUND TAB Low Power Synthesizer Only SYNTHESIZER GROUND TAB Low Power Synthesizer Only OS 3 RF OUTPUT OC 3 RF OUTPUT OS 3H ENHANCED SYNTHESIZER OR OC 3 CRYSTAL CONTROL MODULE OST 3H RF OUTPUT TP19 TP20 TP22 TP21 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 D B Z TP15 TP16 TP18 TP17 TP12 TP13 TP...

Page 26: ...6 LPF25 LPF24 LPF23 LPF22 LPF21 LPF20 LPF19 LPF18 LPF17 LPF16 LPF15 LPF12 LPF10 LPF8 LPF3 LPF5 LPF4 LPF2 LPF1 D8 BAS 16 y J3 x y J2 x x y J21 U6 LP 2951 y J7 x J14 y R29 82k5 x J13 y R5 10R0 J16 R110R0 R30 15k0 C15 4 7µF C14 10nF D7 BAS 16 M2 5 PRESS NUT x LPF14 C10 1 µF y J25 x R16 10k0 x y x y J20 J23 x y J19 J22 J24 x J15 y C20 4 7µF 16V U8 MC14536B R39 221K U7 33172 R32 1k00 R34 27k4 R33 68k1 ...

Page 27: ... TP27 2 3 1 MC33172 a U1 4 5 6 7 8 MC33172 b U1 BYD17J D3 27K4 R6 BYD17J D4 BAS16 D8 10R0 R5 1K0 R7 27K4 R8 TP28 10nF C6 100K0 R10 221K0 R9 9 5V 9 5V TP26 8 9 10 MC14081 c U2 13 12 11 MC14081 d U2 100nF C8 9 5V 5 6 4 14 7 MC14081 b U2 1 2 3 MC14081 a U2 9 5V G D S D15N06V Q9 E B C BC807 25 Q8 10K0 R18 TP11 E B C BC817 25 Q1 E B C BC817 25 Q3 9 5V 9 5V E B C BC817 25 Q4 BYD17J D5 BYD17J D6 J6 TP7 G...

Page 28: ...al 5 3 MT 3 Front Panel Board 5 3 1 MT 3 Front Panel Board Component Layout D1 MIC 1 2 3 4 PF2 SW1 PF1 c b a f e d KEYED NORM J1 Y X Solder Jumper On Solder Side Of PCB Factory Installed Solder Jumper MT3TXMNM5A PF3 J2 Y X 43 921212 P1 2 1 4 3 6 5 8 7 1 2 3 4 1 2 3 4 1 2 3 4 ...

Page 29: ...M6A 28 MAY 97 07 APRIL 1992 43 921212 MT 3 FRONT PANEL BOARD M GAUBE X Y PF3 3 PF3 4 PF3 1 PF3 2 X PF1 4 PF1 1 PF1 2 PF1 3 PF2 2 PF2 3 PF2 4 PF2 1 MIC 2 MIC 4 MIC 3 MIC 1 Y KEYED NORM D1 J1 C1 N I 1 2 3 4 MIC 1 2 3 4 PF1 PF2 4 2 1 3 PF3 1 2 3 4 5 6 7 8 P1 J2 F E D C B A SW1 9 5V IN LED ENA MIC PTT NTO MIC PTT WTO MIC INPUT MIC INPUT MIC PTT MIC PTT RX MON RX MON 9 5V OUT 9 5V OUT RX AUDIO RX AUDIO...

Page 30: ...utput Adjust R22 3K48 R25 82k5 R9 10k0 U2 MC33174 C23 220pF C19 1 0uF R18 470k0 DWG No VAP130AS2C TITLE TX AM AUDIO PROCESSOR SURFACE MOUNT DESIGNATIONS C7 10nF JU1 JU8 JU4 X Y JU7 DWG REV DATE MARCH 06 98 X Y JU3 Y X JU6 X Y JU5 X Y C22 680pF R28 82k5 JU2 C20 220pF C25 150pF C17 330pF R23 51k1 R32 51k1 R31 15k4 R24 15k4 R30 47k5 R20 39k2 R29 5k11 R19 5k11 C18 220pF R15 49k9 R3 49k9 C14 100nF JU9 ...

Page 31: ... DESIGNATORS APRVD FB1 C1 4 7nF CW R1 5K0 TP1 C2 470nF CW R4 50K0 TP2 Vcc Rect In Var G Rect Cap Output Inv In R3 THD Trim GND 2 3 1 7 5 6 8 13 4 a U1 SA571D Rect In Var G Rect Cap Output Inv In R3 THD Trim 15 14 16 10 12 11 9 b U1 SA571D R6 100K0 TP3 C3 680nF C6 100nF C7 10nF TP4 680nF C8 4 7uF C9 470nF C10 18K2 R13 CW R16 5K0 C12 4 7uF C13 1 0nF 470K0 R18 TP5 TP6 C21 4 7uF TP8 MT 3 TX TIME OUT T...

Page 32: ...5V 0V 2 4V 2 0V 2 2VDC 9 4VDC 2 9VDC 0 021VDC 0 135VDC APPROX 0 8 VDC 2 9VDC DWN BY MICHAEL GAUBE APRVD TITLE MT 3 TXTIME OUT TIMER SCHEMATIC DIAGRAM DWG REV DATE 16 JANUARY 1996 DATE 19 JANUARY 1996 DWG No MT3APM4 BOARD No 50027 02 BOARD REV VERSION 0 2 HIGHEST REFERENCE DESIGNATORS UNUSED REFERENCE DESIGNATORS C4 J8 Q1 R17 U2 J1 J4 C3 100nF R9 221k 100nF C4 R14 221k R15 221k R16 221k R13 221k R1...

Page 33: ...5A104K5R C22 CAP SM100nF CER 0805 X7R 50V 1008 5A104K5R C23 CAP 100nF FILM MMK5 10 63V 1016 5A104K63 D1 D6 DIODE BYD17J RECTIFIER SOD87 2101 BYD17J00 D7 DIODE BAS16 SWITCHING SOT23 2100 BAS16000 D8 DIODE BAS16 SWITCHING SOT23 2100 BAS16000 F1 FUSE 3AMP FAST BLO 1 1 4 IN 5604 5GAGC030 FSW1 4 SWITCH BCD 10 STEPS 5 PIN PCB 5273 10BCD001 J30 CONNECTOR F 48_MALE R A_P 3720 6048M0RA LPF1 35 FILTER SM LP...

Page 34: ...K0 0805 1 100ppm 1150 3A1001FP R28 RES SM NOT INSTALLED 0805 1 100ppm 1150 4A1502FP R29 RES SM 82K5 0805 1 100ppm 1150 4A8252FP R30 RES SM 15K0 0805 1 100ppm 1150 4A1502FP R31 RES SM221k 0805 1 100ppm 1150 5A2213FP R32 RES SM 1k00 0805 1 100ppm 1150 3A1001FP R33 RES SM 68k1 0805 1 100ppm 1150 4A6812FP R34 RES SM 27k4 0805 1 100ppm 1150 4A2742FP R35 RES SM 27k4 0805 1 100ppm 1150 4A2742FP R36 RES S...

Page 35: ...OLE NYLON BLACK 5671 250N062B 1 LOCKWASHER M3 SPLIT A2 STEEL 5814 3M0LK00S 4 MIC CONN 4 PIN MALE BLACK 5040 114ST0BK 1 NAMEPLATE BLANK 14HP ALUM 3702 10001214 1 NUT M2 5 HEX 5 0mm STEEL Ni 5813 2M5HX50N 2 NUT M2 5 SQUARE 5 0mm ZINC 5813 2M5SQ50Z 2 NUT PRESS M2 5 5 6mm OD PC MNT 5833 T2M55615 1 PANEL FRNT W IDENT TX EXTR VER 3802 61002101 1 PANEL REAR POS 4 14HP EXTRSN 3702 63002101 1 SCREW M3 x 8 ...

Page 36: ...74K63 C6 CAP SM 100nF CER 0805 X7R 50 1008 5A104K5R C7 CAP SM 10nF CER 0805 X7R 1008 4B103K5R C8 CAP SM 680nF TANT 10 35V 1055 4B684K35 C9 CAP SM 4 7uF TANT 10 16V 1055 5B475K16 C10 CAP 470nF FILM MMK5 10 63V 1016 5D474K63 C11 CAP SM 2 2uF TANT 20 20V 1055 5B225K20 C12 CAP SM 4 7uF TANT 10 16V 1055 5B475K16 C13 CAP SM 1 0nF CER 0805 X7R 50V 1008 3A102K5R C14 CAP SM 100nF CER 0805 X7R 50V 1008 5A10...

Page 37: ...ppm 1150 4A1822FP R14 POT SM 100K0 4mm SQ 100K 11T SIDE 1174 DM4104J0 R15 RES SM 49K9 0805 1 100ppm 1150 4A4992FP R16 POT SM 5K0 4mm SQ 11T SIDE 1174 DM2502J0 R17 RES SM 10K0 0805 1 100ppm 1150 4A1002FP R18 RES SM 470K0 0805 1 100ppm 1150 5A4703FP R19 RES SM 5K11 0805 1 100ppm 1150 3A5111FP R20 RES SM 39K2 0805 1 100ppm 1150 4A3922FP R22 RES SM 3K48 0805 1 100ppm 1150 3A3481FP R23 RES SM 51K1 0805...

Page 38: ...DE DANIELS ELECTRONICS 6 6 MT 3 AM Transmitter Main Board Instruction Manual This page intentionally left blank ...

Page 39: ...o the SM side of the PCB Moved P1 P2 P5 to the correct positions Added land pattern to the PCB for R21 3 June 98 Corrected the part number for D1 and D2 on the MT 3 AM Audio Processor Electrical Parts List December 98 The Butterworth filter stages were changed to Bessel filters to improve the differetnial group delay of the AM Transmitter ECO 563 The AM Audio Processor PCB was 50049 02 is now 5004...

Page 40: ...DE DANIELS ELECTRONICS 7 2 MT 3 AM Transmitter Main Board Instruction Manual This page intentionally left blank ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands