LTO ALTO GATE Service Manual

Service Manual

www.altoproaudio.com

Version: 1.1

Model: ALTO GATE

AUDIO INTERACTIVE / QUAD EXPANDER / GATE

CONTENTS

1. Specification

2. Block Diagram

3. Schematic Diagram

4. Printed Circuit Board

5. Wiring Diagram

6. Test Procedure

7. Electrical Parts List

8. Exploded Views & Mechanical Parts List

9. Notes

1. SPECIFICATIONS

AUDIO INPUT

Connectors

XLR and 1/4 jack

Type

RF filtered , servo-balanced input

Max. Input Level

+21 dBu balanced and unbalanced

Impedance

50kOhm balanced , 25kOhm unbalanced

CMRR

typ. 40 dB, >55dB@1KHz

AUDIO OUTPUT

Connectors XLR and 1/4 jack
Type Electronically servo-balanced output stage
Max. Output Level +21 dBu balanced and unbalanced
Impedance 60 Ohm balanced , 30 Ohm unbalanced

FUNCTION SWITCHES

Monitor monitors the side-chain key signal
Couple activates FlexLink function
Mode gate/expander switch
Filter activates the side-chain Filter

INDICATORS

Gain Reduction 8-segment LED display : 1/3/6/10/15/20/30/40 dB
" - " indicator signal is above threshold
" Hold " indicator signal is reaches threshold
" + " indicator signal is below threshold
LED indicator for each function switch

GATE SECTION

Type UTR ( Ultra Transient Response ) gate
Range variable ( 0 to -80 dB )
Threshold variable ( BYPASS to +10dBu )
Attack program dependent
Hold variable ( 0 to 4sec )
Release variable ( 0.05 to 4 sec )

EXPANDER SECTION

Type IRC ( Interactive Ratio Control ) expander
Attack program dependent
Ratio variable ( 1:1 to 1:4 )

PARAMETRIC SC FILITER

Frequency variable ( 100 Hz to 10KHz )
Bandwidth variable ( 2.3 to 0.7 Oct. )

SYSTEM SPECIFICATIONS

Frequency Respone 10Hz to 100KHz +/- 3 dB ( RANGE TO - 80 dB

)

Noise >90dBu , unweighted , 22Hz to 22KHz
THD 0.02% typ. @+4dBu , 1KHz , GAIN 1
IMD 0.01% typ. SMPTE
Crosstalk <-100 dB , 22Hz to 22KHz

POWER SUPPLY

AC 95-120 Vac~60Hz Fuse : 400mA ( slow blow )
AC 210-240 Vac~50Hz Fuse : 200mA ( slow blow )

POWER CONSUMPTION

18 Watts

DIMENSIONS

483(W) * 194.5(D) * 44(H) mm ( 19 * 7.7 * 1.7 )

WEIGHT

3.3kg

SPECIFICATIONS FRO ALTO GATE

1 2 3 4 56

A

B

C

D

6

54321

D

C

B

A

BLOCK DIAGRAM

3c5e1a4d2b

INPUT2

PHONEJACK5 (5-PIN)

213

4

INPUT2

CN-BAL-FEMALE

SGND

SGND

3c5e1a4d2b

INPUT3

PHONEJACK5 (5-PIN)

213

4

INPUT3

CN-BAL-FEMALE

SGND

SGND

3c5e1a4d2b

INPUT4

PHONEJACK5 (5-PIN)

213

4

INPUT4

CN-BAL-FEMALE

SGND

SGND

3c5e1a4d2b

INPUT1

PHONEJACK5 (5-PIN)

213

4

INPUT1

CN-BAL-FEMALE

SGND

SGND

VCA

MON.

EXPANDER/GATE RANGE/RADIOPARAMETRIC SC FILTER

GAIN REDUCTION

MON.

RANGE/RADIO

GAIN REDUCTION

MON.

EXPANDER/GATE RANGE/RADIOPARAMETRIC SC FILTER

GAIN REDUCTION

MON.

EXPANDER/GATE RANGE/RADIOPARAMETRIC SC FILTER

GAIN REDUCTION

INPUT 1

INPUT 2

INPUT 3

INPUT 4

3c5e1a

4d

2b

OUTPUT1

PHONEJACK5 (5-PIN)

SGND

OUTPUT 1

3c5e1a

4d

2b

OUTPUT1

PHONEJACK5 (5-PIN)

SGND

OUTPUT 2

3c5e1a

4d

2b

OUTPUT1

PHONEJACK5 (5-PIN)

SGND

OUTPUT 3

3c5e1a

4d

2b

OUTPUT1

PHONEJACK5 (5-PIN)

SGND

OUTPUT 4

213

4 OUTPUT 1

CN-BAL-MALE

213

4 OUTPUT 2

CN-BAL-MALE

213

4 OUTPUT 3

CN-BAL-MALE

213

4 OUTPUT 4

CN-BAL-MALE

VCA

EXPANDER/GATE PARAMETRIC SC FILTER

VCA

VCA

CHANNEL 2

COUPLE

CHANNEL 3

COUPLE

CHANNEL 4

COUPLE

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

CH1_IN

3
2

1

IC1A
TL064

5

6

7

IC1B
TL064

10

9

8

IC1C
TL064

12

13

14

IC1D

TL064

411

IC3E
TL064

R177
51K1

R14
10K0

R227
1K00

R248
6K34

R13

10K0

R15

1K00

R178

51K1

R115
20K0

R16

10K0

1

2

3

VR17
C500K

C29

47uF/25V

G1

C19
20P

G1

C42
15N

C41
15N

G1

C20
20P

G1

C30
47uF/25V

CH1_OUT_P

CH1_OUT_C

R116
20K0

G1

1
2
3

SW6A
SC_FILTERC10.33uF/50V

R1

10K0

2

1 3

IC16A

CA3086

4

5 3

IC16B

CA3086

6

8 7

IC16C

CA3086

9

11 10

IC16D

CA3086

12

14 13

IC16E

CA3086

3

2

1

IC3A
TL064

5

6

7

IC3B
TL064

10

9

8

IC3C
TL064

12
13

14

IC3D
TL064

411

IC1E
TL064

G1

R65
10M0

R73
2M7

C5
1uF/50V

G1

G1

1

2

3

VR9
W50K

R77
549K

R97
5K62

R89
2M21

R54
47K5

R53
47K5

G1

-15V

-15V

+15V

BANDWIDTH

FREQUENCY

THRESHOLD

R137
2K00

R133

680R 5%

R129

390R 5%

R105

1K50

R109

20K0

D1

4148

D2
4148

C13

0.47uF/50V

G1

G1

5

4

2

IC2A
LM339

1

6
7

IC2B
LM339

8

9

14

IC2C

LM339

10
11

13

IC2D

LM339

312

IC2E
LM339

R49
100K

R45

47R0

R61
51K1

R3

10K0

R2

10K0

R138
2K00

R4
10K0

R101

51K1

R93
549K

R81
475R

G1

+15V

C9

4.7uF/100V

+15V

+15V

-15V-15V

G1

G1

1

2

3

VR1
A1M

HOLD

C17

10N

Ya1

13

Ya0

14

Zb

15

Za

12

Yb1

1

Yc0

5

Yb0

2

Zc

4

Yc13E

6

Sc

9

Sb

10

Sa

11

IC14A
HEF4053

16

8

7

VSS VEE

VDD

IC14B
HEF4053

3

2

1

IC4A

TL064

5
6

7

IC4B

TL064

10

9

8

IC4C

TL064

12

13

14

IC4D
TL064

1

2

3

VR13
A5K

D7
4148

G1

1
2
3

SW7A
MODE

G1

-15V

-15V

D4

4148

G1

R193
100K

R174

51K1

R173

51K1

R169

100K

R161

120K 5%

R157

3K32

G1

D6

4148

R149
3K01

R165
200R

R189
100K

R17
10K0

G1

-15V

D3

4148

C49
47N

D5

4148

1

2

3

VR3

A1M

R5
10K0

TR1
HR

G1

+15V

G1

3

2

1

IC5A

TL064

5
6

7

IC5B
TL064

411

IC5E
TL064

R194
100K

R252
36K0

R228
1K00

G1

G1

LINK-CH1

CH1_IN

CH1_OUT_C

TR2
HR

R213
15K0

R221
560R 1/4W

R214
39K2

G1

+15V

4
5
6

P

SW5B
MON

4
5

6

P

SW6B
SC_FILTER

4
5
6

P

SW7B
MODE

LED2
YEL

LED18
RED

LED10
GR

-15V

R6
10K0

R150

(3K01)

R201

(3K92)

TR9

BR

G1

+15V

LED1
YEL

LED17

RED

LED9
GR

D10
4148

D9
4148

D8
4148

ZD1
2V7

1

2
3

SW5A
MON

CH1_OUT_P

CH1_IN_R
CH1_OUT_E

CH1_CTL

R66
10M0

-15V

411

IC4E
TL064

5
4

2

IC10A
LM339

1

6

7

IC10B
LM339

8

9

14

IC10C
LM339

10

11

13

IC10D
LM339

312

IC10E
LM339

5
4

2

IC11A
LM339

1

6

7

IC11B
LM339

8

9

14

IC11C
LM339

10

11

13

IC11D
LM339

312

IC11E
LM339

R139
2K00

R202
4K02

R204
4K02

R238
4K99

R239
4K99

R256
10K0

R257
10K0

R264
28K0

R225
1K00

R82

1.2K 1/4W

R111
30K9

R110
47K5

C31
47uF/25V

LED30
RED

LED29
RED

LED28
RED

LED27
RED

LED26
RED

LED25
RED

LED20
RED

LED19
RED

R268
47R0

TR13
HR

+15V

G1

G1

-15V

-15V

-15V

+15V G1

-15V

D9

D9

R272
2M21

-15V

1

2

3

VR21A
E100K

4

5

6

VR21B
E100K

RELEASE

C53
100N

RANGE

FP_CH1.Sch

Titel

Size

File:

Date:

Drawn By:

Sheet

RevisionModel No:

15-May-2003

M. J. YANG

GATEFP

51of

ALTO GATE

VER030505

A3

1
2
3
4
5
6
7
8

9
10
11
12

CN1
CON12

CH1_OUT_E

CH1_IN

CH1_IN_R

CH1_CTL

CH2_OUT_E

CH2_IN
CH2_IN_R

CH2_CTL

1
2
3
4
5
6
7
8

9
10
11
12

CN2
CON12

CH3_OUT_E

CH3_IN

CH3_IN_R

CH3_CTL

CH4_OUT_E

CH4_IN
CH4_IN_R

CH4_CTL

G1
G2

G3
G4

-15V +15V

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

CH2_IN

3
2

1

IC6A
TL064

5

6

7

IC6B
TL064

10

9

8

IC6C
TL064

12

13

14

IC6D

TL064

R181

51K1

R40
10K0

R231
1K00

R251
6K34

R39

10K0

R41

1K00

R182

51K1

R127
20K0

R42
10K0

1

2

3

VR19
C500K

C37

47uF/25V

G2

C26
20P

G2

C46

15N

C45
15N

G2

C27
20P

G2

C35
47uF/25V

CH2_OUT_P

CH2_OUT_C

R128
20K0

G2

1
2
3

SW2A
SC_FILTER

C3

0.33uF/50V
R23
10K0

2

1 3

IC17A

CA3086

4

5 3

IC17B

CA3086

6

8 7

IC17C

CA3086

9

11 10

IC17D

CA3086

12

14 13

IC17E

CA3086

3

2

1

IC8A
TL064

5

6

7

IC8B

TL064

10

9

8

IC8C

TL064

12
13

14

IC8D
TL064

411

IC6E
TL064

G2

R69

10M0

R75
2M7

C7
1uF/50V

G2

G2

1

2

3

VR12
W50K

R80

549K

R99
5K62

R91
2M21

R58
47K5

R57
47K5

G2

-15V

-15V

+15V

BANDWIDTH

FREQUENCY

THRESHOLD

R143
2K00

R135
680R 5%

R131
390R 5%

R107
1K50

R119

20K0

D22

4148

D23

4148

C15

0.47uF/50V

G2

G2

5

4

2

IC7A
LM339

1

6
7

IC7B
LM339

8

9

14

IC7C

LM339

10
11

13

IC7D

LM339

312

IC12E
LM339

R51

100K

R47
47R0

R63
51K1

R25
10K0

R24
10K0

R144
2K00

R26
10K0

R103

51K1

R95
549K

R85

475R

G2

+15V

C11

4.7uF/100V

+15V

+15V

-15V-15V

G2

G2

1

2

3

VR5
A1M

HOLD

C23
10N

Ya1

13

Ya0

14

Zb

15

Za

12

Yb1

1

Yc0

5

Yb0

2

Zc

4

Yc13E

6

Sc

9

Sb

10

Sa

11

IC15A
HEF4053

16

8

7

VSS VEE

VDD

IC15B
HEF4053

3

2

1

IC9A

TL064

5
6

7

IC9B

TL064

10

9

8

IC9C
TL064

12

13

14

IC9D
TL064

1

2

3

VR15
A5K

D28
4148

G2

1
2
3

SW3A
MODE

G2

-15V

-15V

D25
4148

G2

R197
100K

R184

51K1

R183

51K1

R171
100K

R163

120K 5%

R159

3K32

G2

D27

4148

R153

3K01

R167

200R

R191
100K

R27

10K0

G2

-15V

D24
4148

C51
47N

D26
4148

1

2

3

VR6
A1M

R28
10K0

TR5
HR

G2

+15V

G2

4
5

6

P

SW4B
COU

10

9

8

IC5C

TL064

12
13

14

IC5D

TL064

411

IC9E
TL064

R198
100K

R254

36K0

R232
1K00

G2

G2

LINK-CH1

CH2_IN

CH2_OUT_C

TR6
HR

R217
15K0

R223
560R 1/4W

R218
39K2

G2

+15V

4
5
6

P

SW1B
MON

4
5

6

P

SW2B
SC_FILTER

4
5
6

P

SW3B
MODE

LED6
YEL

LED40
RED

LED14
GR

-15V

1
2
3

SW4A
COU

D32
4148

LED39
RED

R242

4.7K 1/4W

R29
10K0

R154

(3K01)

R207

(3K92)

TR11

BR

+15V

G2

+15V

LED5
YEL

LED38

RED

LED13

GR

D31

4148

D30
4148

D29
4148

ZD3
2V7

-15V

1

2
3

SW1A
MON

CH2_OUT_P

CH2_IN_R
CH2_OUT_E

CH2_CTL

R70
10M0

-15V

411

IC8E
TL064

5
4

2

IC12A
LM339

1

6

7

IC12B
LM339

8

9

14

IC12C
LM339

10

11

13

IC12D
LM339

312

IC13E
LM339

5
4

2

IC13A
LM339

1

6

7

IC13B
LM339

8

9

14

IC13C
LM339

10

11

13

IC13D
LM339

312

IC7E
LM339

R145
2K00

R208
4K02

R209
4K02

R243
4K99

R244
4K99

R261
10K0

R262
10K0

R266
28K0

R233
1K00

R86

1.2K 1/4W

R121
30K9

R120
47K5

C38
47uF/25V

LED57
RED

LED56
RED

LED55
RED

LED45
RED

LED44
RED

LED43
RED

LED42
RED

LED41
RED

R270
47R0

TR15
HR

+15V

G2

G2

-15V

-15V

-15V

+15V G2

-15V

D30

D30

R273
2M21

-15V

1

2

3

VR23A
E100K

4

5

6

VR23B
E100K

LINK-CH2

RELEASE

C54
100N

RANGE

FP_CH2.Sch

Titel

Size

File:

Date:

Drawn By:

Sheet

RevisionModel No:

15-May-2003

M. J. YANG

GATEFP

52of

ALTO GATE

VER030505

A3

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

411

IC29E
TL064

1
2
3

SW9A
SC_FILTERC20.33uF/50V

R7

10K0

2

1 3

IC31A

CA3086

4

5 3

IC31B

CA3086

6

8 7

IC31C

CA3086

9

11 10

IC31D

CA3086

12

14 13

IC31E

CA3086

3

2

1

IC29A
TL064

5

6

7

IC29B
TL064

10

9

8

IC29C
TL064

12
13

14

IC29D
TL064

411

IC27E
TL064

G3

R67

10M0

R74
2M7

C6
1uF/50V

G3

G3

1

2

3

VR10

W50K

R78

549K

R98
5K62

R90
2M21

R56
47K5

R55
47K5

-15V

-15V

+15V

THRESHOLD

R140

2K00

R134

680R 5%

R130
390R 5%

R106

1K50

R112

20K0

D11
4148

D12
4148

C14

0.47uF/50V

G3

G3

5

4

2

IC28A
LM339

1

6
7

IC28B
LM339

8

9

14

IC28C

LM339

10
11

13

IC28D
LM339

312

IC28E
LM339

R50

100K

R46
47R0

R62
51K1

R9

10K0

R8

10K0

R141
2K00

R10
10K0

R102

51K1

R94
549K

R83

475R

G3

+15V

C10

4.7uF/100V

+15V

+15V

-15V-15V

G3

G3

1

2

3

VR2

A1M

HOLD

C18

10N

Ya1

13

Ya0

14

Zb

15

Za

12

Yb1

1

Yc0

5

Yb0

2

Zc

4

Yc13E

6

Sc

9

Sb

10

Sa

11

IC32A
HEF4053

16

8

7

VSS VEE

VDD

IC32B
HEF4053

3

2

1

IC30A

TL064

5
6

7

IC30B
TL064

10

9

8

IC30C
TL064

12

13

14

IC30D
TL064

1

2

3

VR14
A5K

D17
4148

G3

1
2
3

SW10A
MODE

G3

-15V

-15V

D14
4148

G3

R195
100K

R176
51K1

R175

51K1

R170
100K

R162

120K 5%

R158
3K32

G3

D16

4148

R151
3K01

R166

200R

R190
100K

R22
10K0

G3

-15V

D13
4148

C50
47N

D15
4148

1

2

3

VR4

A1M

R11
10K0

TR3
HR

G3

+15V

G3

4
5
6

P

SW11B
COU

3

2

1

IC22A

TL064

5
6

7

IC22B
TL064

R196
100K

R253

36K0

R230

1K00

G3

G3

LINK-CH2

CH3_IN

CH3_OUT_C

TR4
HR

R215
15K0

R222
560R 1/4W

R216
39K2

G3

+15V

4
5
6

P

SW8B
MON

4
5

6

P

SW9B
SC_FILTER

4
5
6

P

SW10B
MODE

LED4
YEL

LED23
RED

LED12
GR

-15V

1
2
3

SW11A
COU

D21
4148

LED22
RED

R237

4.7K 1/4W

R12
10K0

R152

(3K01)

R203

(3K92)

TR10
BR

+15V

G3

+15V

LED3

YEL

LED21
RED

LED11

GR

D20

4148

D19
4148

D18
4148

ZD2
2V7

-15V

1
2
3

SW8A
MON

CH3_OUT_P

CH3_IN_R
CH3_OUT_E

CH3_CTL

R68

10M0

-15V

411

IC30E
TL064

5
4

2

IC33A
LM339

1

6

7

IC33B
LM339

8

9

14

IC33C
LM339

10

11

13

IC33D
LM339

312

IC33E
LM339

5
4

2

IC34A
LM339

1

6

7

IC34B
LM339

8

9

14

IC34C
LM339

10

11

13

IC34D
LM339

312

IC34E
LM339

R142
2K00

R205
4K02

R206
4K02

R240
4K99

R241
4K99

R258
10K0

R259
10K0

R265
28K0

R226
1K00

R84

1.2K 1/4W

R114
30K9

R113
47K5

C34
47uF/25V

LED37
RED

LED36
RED

LED35
RED

LED34
RED

LED33
RED

LED32
RED

LED31
RED

LED24
RED

R269
47R0

TR14
HR

+15V

G3

G3

-15V

-15V

-15V

+15V G3

G3

-15V

D19

D19

R274
2M21

-15V

LINK-CH3

CH3_IN

3
2

1

IC27A
TL064

5

6

7

IC27B
TL064

10

9

8

IC27C
TL064

12

13

14

IC27D
TL064

R179

51K1

R19
10K0

R229
1K00

R249
6K34

R18
10K0

R20

1K00

R180
51K1

R117
20K0

R21
10K0

1

2

3

VR18
C500K

C32

47uF/25V

G3

C21
20P

G3

C44
15N

C43
15N

G3

C22
20P

G3

C33

47uF/25V

CH3_OUT_P

CH3_OUT_C

R118
20K0

G3

BANDWIDTH

FREQUENCY

1

2

3

VR22A
E100K

6

5

4

VR22B
E100K

RANGE

RELEASE

C55
100N

FP_CH3.Sch

Titel

Size

File:

Date:

Drawn By:

Sheet

RevisionModel No:

15-May-2003

M. J . YANG

GATEFP

53of

ALTO GATE

CER030505

A3

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

FP_CH4.Sch

Titel

Size

File:

Date:

Drawn By:

Sheet

RevisionModel No:

15-May-2003

M. J. YANG

GATEFP

54of

ALTO GATE

VER030505

A3

411

IC20E
TL064

1
2
3

SW13A
SC_FILTERC40.33uF/50V

R30

10K0

2

1 3

IC26A

CA3086

4

5 3

IC26B

CA3086

6

8 7

IC26C

CA3086

9

11 10

IC26D

CA3086

12

14 13

IC26E

CA3086

3

2

1

IC20A
TL064

5

6

7

IC20B
TL064

10

9

8

IC20C
TL064

12
13

14

IC20D
TL064

411

IC18E
TL064

G4

R71

10M0

R76
2M7

C8
1uF/50V

G4

G4

1

2

3

VR11
W50K

R79

549K

R100
5K62

R92

2M21

R60

47K5

R59
47K5

G4

-15V

-15V

+15V

THRESHOLD

R146
2K00

R136
680R 5%

R132

390R 5%

R108
1K50

R122

20K0

D33

4148

D34
4148

C16

0.47uF/50V

G4

G4

5

4

2

IC19A
LM339

1

6
7

IC19B
LM339

8

9

14

IC19C
LM339

10
11

13

IC19D

LM339

312

IC19E
LM339

R52

100K

R48

47R0

R64
51K1

R34

10K0

R33

10K0

R147
2K00

R35
10K0

R104

51K1

R96

549K

R87

475R

G4

+15V

C12

4.7uF/100V

+15V

+15V

-15V-15V

G4

G4

1

2

3

VR7
A1M

HOLD

C25
10N

Ya1

13

Ya0

14

Zb

15

Za

12

Yb1

1

Yc0

5

Yb0

2

Zc

4

Yc13E

6

Sc

9

Sb

10

Sa

11

IC23A
HEF4053

16

8

7

VSS VEE

VDD

IC23B
HEF4053

3

2

1

IC21A

TL064

5
6

7

IC21B
TL064

10

9

8

IC21C

TL064

12

13

14

IC21D

TL064

1

2

3

VR16
A5K

D39
4148

G4

1

2
3

SW14A
MODE

G4

-15V

-15V

D36

4148

G4

R199

100K

R188

51K1

R187

51K1

R172
100K

R164

120K 5%

R160

3K32

G4

D38

4148

R155

3K01

R168
200R

R192
100K

R36

10K0

G4

-15V

D35
4148

C52
47N

D37
4148

1

2

3

VR8

A1M

R37
10K0

TR7

HR

G4

+15V

G4

4
5
6

P

SW15B
COU

10

9

8

IC22C
TL064

12
13

14

IC22D
TL064

411

IC22E
TL064

R200
100K

R255
36K0

R235
1K00

G4

G4

LINK-CH3

CH4_IN

CH4_OUT_C

TR8
HR

R219
15K0

R224
560R 1/4W

R220
39K2

G4

+15V

4
5
6

P

SW12B
MON

4
5
6

P

SW13B
SC_FILTER

4
5

6

P

SW14B
MODE

LED8
YEL

LED48
RED

LED16
GR

-15V

1

2
3

SW15A
COU

D43

4148

LED47
RED

R245

4.7K 1/4W

R38
10K0

R156

(3K01)

R210
(3K92)

TR12

BR

+15V

G4

+15V

LED7

YEL

LED46

RED

LED15

GR

D42

4148

D41
4148

D40

4148

ZD4

2V7

-15V

1
2

3

SW12A
MON

CH4_OUT_P

CH4_IN_R
CH4_OUT_E

CH4_CTL

R72
10M0

-15V

411

IC21E
TL064

5
4

2

IC24A
LM339

1

6

7

IC24B
LM339

8

9

14

IC24C
LM339

10

11

13

IC24D
LM339

312

IC24E
LM339

5
4

2

IC25A
LM339

1

6

7

IC25B
LM339

8

9

14

IC25C
LM339

10

11

13

IC25D
LM339

312

IC25E
LM339

R148
2K00

R211
4K02

R212
4K02

R246
4K99

R247
4K99

R260
10K0

R263
10K0

R267
28K0

R236
1K00

R88

1.2K 1/4W

R126
30K9

R125
47K5

C40
47uF/25V

LED59
RED

LED58
RED

LED54
RED

LED53
RED

LED52
RED

LED51
RED

LED50
RED

LED49
RED

R271
47R0

TR16
HR

+15V

G4

G4

-15V

-15V

-15V

+15V G4

-15V

D41

D41

R275
2M21

-15V

RELEASE

RANGE

CH4_IN

3

2

1

IC18A
TL064

5

6

7

IC18B
TL064

10

9

8

IC18C
TL064

12

13

14

IC18D
TL064

R185

51K1

R43

10K0

R234

1K00

R250
6K34

R31
10K0

R32

1K00

R186

51K1

R123
20K0

R44
10K0

1

2

3

VR20
C500K

C39

47uF/25V

G4

C24

20P

1

2

3

VR24A
E100K

G4

C48

15N

C47
15N

G4

C28
20P

G4

C36
47uF/25V

CH4_OUT_P

CH4_OUT_C

R124
20K0

G4

BANDWIDTH

FREQUENCY

6

5

4

VR24B
E100K

C56
100N

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

3c

5e

1a

4d
2b

PJ6

PHONEJACK5 (5-PIN)

3c

5e

1a

4d
2b

PJ5

PHONEJACK5 (5-PIN)

2

1

3

4

CN6

CN-BAL-FEMALE

2
1

3

4

CN10

CN-BAL-MALE

5

18

-IN

624

73

V+

V-

GND

EC+

EC-

SYM

OUT

IC10

THAT2150A

R16

10K0

R15

10K0

R37

20K0

R17

10K0

R18

10K0

R19
12K1

R36
20K0

R35

20K0

C7

47P

C8
47P

C19
10P

C20
10P

C29

47uF/25V

R47
200R

R59
12K1

R55
150K 5%

R43
4K75

R51
47R

VR3
50K

+15V

-15V

-15V

+15V

C9
47P

C30

47uF/25V

R65

3K16

R91
5K76

R21

10K0

R75
6K04

R97
60R4

R20

10K0

R98
60R4

C21
10P

R82

4K53

R66

3K16

R71
2K67

C39
470P

C35
470P

R81
4K53

R87
3K24

CH3_IN

CH3_CTL

CH3_OUT_ECH3_IN_R

1
2
3
4
5
6
7
8
9
10
11
12

CN2

CN2.0-12P-180

3c

5e

1a

4d
2b

PJ4

PHONEJACK5 (5-PIN)

3c

5e

1a

4d
2b

PJ3

PHONEJACK5 (5-PIN)

2

1

3

4

CN5

CN-BAL-FEMALE

2
1

3

4

CN9

CN-BAL-MALE

5

18

-IN

624

73

V+

V-

GND

EC+

EC-

SYM

OUT

IC7

THAT2150A

R9
10K0

R8
10K0

R34

20K0

R10
10K0

R11

10K0

R12
12K1

R33
20K0

R32

20K0

C4
47P

C5
47P

C16

10P

C17
10P

C27

47uF/25V

R46
200R

R58

12K1

R54

150K 5%

R42
4K75

R50
47R

VR2
50K

+15V

-15V

-15V

+15V

C6

47P

C28

47uF/25V

R63

3K16

R90

5K76

R14

10K0

R74
6K04

R95
60R4

R13

10K0

R96
60R4

C18
10P

R80

4K53

R64

3K16

R70

2K67

C38
470P

C34
470P

R79

4K53

R86

3K24

CH2_IN

CH2_IN

CH2_CTL

CH2_CTL
CH2_OUT_E

CH2_IN_R

CH2_OUT_ECH2_IN_R

CH1_OUT_E

CH1_IN
CH1_IN_R

CH1_CTL

3c

5e

1a

4d
2b

PJ2

PHONEJACK5 (5-PIN)

3c

5e

1a

4d
2b

PJ1

PHONEJACK5 (5-PIN)

2

1

3

4

CN4

CN-BAL-FEMALE

2
1

3

4

CN8

CN-BAL-MALE

5

18

-IN

624

73

V+

V-

GND

EC+

EC-

SYM

OUT

IC4

THAT2150A

R2

10K0

R1

10K0

R31
20K0

R3

10K0

R4

10K0

R5

12K1

R30
20K0

R29
20K0

C1
47PC247P

C13
10P

C14
10P

C25
47uF/25V

R45

200R

R57

12K1

R53

150K 5%

R41
4K75

R49
47R

VR1

50K

+15V

-15V

-15V

+15V

C3
47P

C26

47uF/25V

R61
3K16

R89
5K76

R7

10K0

R73
6K04

R93
60R4

R6

10K0

R94

60R4

C15
10P

R78
4K53

R62
3K16

R69
2K67

C37
470P

C33
470P

R77

4K53

R85

3K24

CH1_IN

CH1_CTL

CH1_OUT_ECH1_IN_R

+15V

1
2
3

CN1

CN3.9-3P-180

C56

1000uF/35V

C55

1000uF/35V

C58

47uF/50V

C57

47uF/50V

C53
100N

C54
100N

C42
100N

C41
100N

IC1
7815

IC2
7915

+15V

-15V

C43
100N

C44
100N

C45
100N

C46
100N

C48
100N

C47
100N

TP1
GGND

JP1

1
2

CN12

CN2.5-2P-180

+15V

R101

1.2K 1/4W

BD1

RB154

JP2

SGND

SGNDSGND

SGND

3

2

1

IC9A

4580

5

6

7

IC9B
4580

84

IC9C
4580

3

2

1

IC11A
4580

5

6

7

IC11B
4580

84

IC11C
4580

SGND SGND SGND

+15V

-15V

SGND

SGND

SGND

SGNDSGND

3

2

1

IC6A
4580

5

6

7

IC6B
4580

84

IC6C
4580

3

2

1

IC8A
4580

5

6

7

IC8B
4580

84

IC8C
4580

SGNDSGNDSGND

+15V

-15V

SGND

3

2

1

IC3A
4580

5

6

7

IC3B
4580

84

IC3C
4580

3

2

1

IC5A
4580

5

6

7

IC5B
4580

84

IC5C
4580

SGNDSGNDSGND

+15V

-15V

3c

5e

1a

4d
2b

PJ7

PHONEJACK5 (5-PIN)

2

1

3

4

CN7

CN-BAL-FEMALE

R23

10K0

R22

10K0

R40

20K0

R24

10K0

R25
10K0

R26
12K1

R39

20K0

R38
20K0

C10

47P

C11
47P

C22
10P

C23
10P

C31

47uF/25V

R48

200R

R60

12K1

R56
150K 5%

R44
4K75

R52

47R

VR4

50K

+15V

-15V

-15V

+15V

C12
47P

C32

47uF/25V

CH4_IN

CH4_CTL

CH4_IN_R

SGND

SGND

SGND

3

2

1

IC12A
4580

5

6

7

IC12B
4580

5

18

-IN

624

73

V+

V-

GND

EC+

EC-

SYM

OUT

IC13

THAT2150A

3c

5e

1a

4d
2b

PJ8

PHONEJACK5 (5-PIN)

2
1

3

4

CN11

CN-BAL-MALE

R67

3K16

R92

5K76

R28
10K0

R76

6K04

R99

60R4

R27

10K0

R100
60R4

R84
4K53

R68
3K16

R72
2K67

C40
470P

C36
470P

R83
4K53

R88
3K24

CH4_OUT_E

C49
100N

C50
100N

SGND SGND SGND

84

IC12C
4580

3

2

1

IC14A
4580

5

6

7

IC14B
4580

84

IC14C
4580

+15V

-15V

C24
10P

1
2
3
4
5
6
7
8
9
10
11
12

CN3

CN2.0-12P-180

CH4_IN
CH4_CTL

CH4_OUT_E

CH4_IN_R

CH3_OUT_E

CH3_IN
CH3_IN_R

CH3_CTL

-15V

C59
100N

C60
100N

C61
100N

C62
100N

C63
100N

C64
100N

C65
100N

C66
100N

C67
100N

C68
100N

C69
100N

C70
100N

C71
100N

C72
100N

C73
100N

C74
100N

GATE_PU.sch

Titel

Size

File:

Date:

Drawn By:

Sheet

RevisionModel No:

15-May-2003

M. J. YANG

GATEPU

55of

ALTO GATE

VER030515

A3

PWR LIGHT

C75
100uF/35V