1LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI Electronics

aLIGO BSC ISI Electronics FDR

3/30/2010

LIGO-G1000411

Ben Abbott, Brian Lantz

2LIGO-G1000411-v3

March 30, 2010

KP125 Pressure Sensor (response = 53.3mV/KPa) is Given its voltage reference from an LT1021-5

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LIGO ProjectCalifornia Institute of TechnologyMassachusetts Institute of Technology

**

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D1000059 v13/25/20105:03:03 PM

C:\Ben\Seismic\ISI\BSC_ISI\L4C Preamp From Sam\L4CPreamp3-18-2010.SchDoc

Title

Size: DCC Number:Date:

File: Sheet ofTime:B

ISI L4C Interface Board LIGOEngineer:SCH / PCB Revision:

Sam Abbott

47uF, 35VC12

GND

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2

34

5

6

7 8

Vin Vout

GNDU1

LT1021

Test1

Clock2

Data In3

Data Out4

VDD5

GND6

Vout7

GND8

U3

KP125

GND

GND

GND

100nFC4

100nFC6

100nFC1059K

R6

22.1K

R10

GND

N/P

R7

5V

Pressure Sensor

Pressure+

V+

GND

aLIGO BSC ISI Electronics In-Vac Protection

3LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsTrillium Pressure Sensor Board

4LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsTrillium Pressure Sensor Board

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D1000718

v13/26/2010

5:06:55 PMC:\Ben\Seismic\ISI\BSC_ISI\TrilliumPressureSensorBoard.SchDoc

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Trillium Pressure Sensor Board

Drawn by:Ben Abbott

Ligo ProjectCalifornia Institute of TechnologyMassachusetts Institute of Technology

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2

34

5

6

7 8

Vin Vout

GNDU2

LT1021

Test1

Clock2

Data In3

Data Out4

VDD5

GND6

Vout7

GND8

U1

KP125

GND

GND

GND

+15V

100nFC2

100nFC1

100nFC359K

R1

22.1K

R3

GND

N/P

R2

GND

5V

Pressure Sensor

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20

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21

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25

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26

J1

D Connector 25

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23

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24

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25

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26

J2

D Connector 25

X/U+X/U-Y/V+Y/V-MP_UGND

TXRXD_GND-15V+15V-15VV_CalU_Cal

Cal_ExcW_Cal

Press+Press-

MP_VMP_WZ/W+Z/W-Shield

Press+

Press-

Female Male

This connector on

bottom side of board

toward the flange.

This connector on

Top side of board

with other circuitry.

GND

GND

0.1uFC2

0.01uFC3

5LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI Electronics In-Vac Protection

In-vacuum pod voltage protection for GS-13s, T240s, and L4Cs per T0810012-v1

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LIGO ProjectCalifornia Institute of TechnologyMassachusetts Institute of Technology

**

1

D060044 003/25/20104:08:51 PM

C:\Ben\Seismic\ISI\L4CPreamp\NewL4CPreamp\NewL4CPreamp.SchDoc

Title

Size: DCC Number:Date:

File: Sheet ofTime:B

ISI L4C Interface Board LIGOEngineer:SCH / PCB Revision:

J. Heefner

47uF, 35VC8

47uF, 35VC7

+VA

-VA

GN

DV

+

U?TVS

GND

V-

1

TP?

1

TP?

IRF7343-ND

3

4

56P-Chan

Q?B

Dual FET

IRF7343-ND

1

2

78N-Chan

Q?A

Dual FET

GND

- Supply Output

+ Supply Output

R?100KC?

470NFR?

100K

GNDGND

R?100KC?

470NFR?

100K

1

TP?

1

TP?

1

TP? D?

Diode

D?

Diode

GN

DV

+

U?TVS

SMAJ18CA

SMAJ18CA

Inrush Current Limitter, Transient spike, and reverse Voltage protection.

V+

6LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsElectronics Protection

Single-Sided Supply Protection in ISI Interface Chassis

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Title

Number RevisionSize

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Date: 3/25/2010 Sheet ofFile: Sheet5.SchDoc Drawn By:

+18Prot-18ProtK2

Relay-SPST

K1

Relay-SPST

+18Sw

+18Sw-18Sw

-18Sw

GNDGND

D4

Diode

D5

Diode

123

P7

Header 3

123

P6

Header 3

From Geophones 1&2

+15G12+15G12

-15G12-15G12

S3

SW-DPST

+15

-15

+15G12

-15G12

GeoPh Out +1GeoPh Out +2 GeoPh Out -2

GeoPh Out -1

DiffPress1+ DiffPress1-Press1+ Press1-

1 23 45 67 89 1011 1213 1415 1617 1819 20

P3

Header 10X2

GeoGain1GeoGain2

+15G12

-15G12

Geoph 1&2 Power Switch

7LIGO-G1000411-v3

March 30, 2010

From the Back Board of the ISI Interface Chassis, all of the in-vacuum pod pairs get their own switched power.

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Title

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A

Date: 3/25/2010 Sheet ofFile: Sheet5.SchDoc Drawn By:

From Geophones 1&2

+15G12+15G12

-15G12-15G12

S3

SW-DPST

+15

-15

+15G12

-15G12

GeoPh Out +1GeoPh Out +2 GeoPh Out -2

GeoPh Out -1

DiffPress1+ DiffPress1-Press1+ Press1-

1 23 45 67 89 1011 1213 1415 1617 1819 20

P3

Header 10X2

GeoGain1GeoGain2

+15G12

-15G12

Geoph 1&2 Power Switch

aLIGO BSC ISI ElectronicsSensor Protection

8LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI Electronics

GS-13

L4C

DC G=40Single-to-differential

AmplifierPassthrough

DC G=2Zero @ 10Hz

Poles @ 50Hz, 2KHz and 2.24KHz

3rd Order Chebyshev,

Fc = 10KHz with a notch @ 65536Hz

GS-13 PreAmp Connector Board

GS-13 Interface Board Anti-Alias Filter

To ADC

DC G=44Single-to-differential

Amplifier

LOW DC G=21 Pole @ 2KHz HIGH DC G=141 Pole @ 2KHz

3rd Order Chebyshev,

Fc = 10KHz with a notch @ 65536Hz

L4C PreAmp L4C Interface Board Anti-Alias Filter

To ADC

Signal Path for the GS-13 and L4C Geophones

Gain = 20Pole @ 2KHz

9LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI Electronics

Cap Pos Sensor Passthrough

3rd Order Chebyshev,

Fc = 10KHz with a notch @ 65536Hz

Capacitive Position Sensor Interface Board Anti-Alias Filter

To ADC

From DAC

3rd Order Chebyshev,

Fc = 10KHz with a notch @ 65536Hz

Anti-Image Filter

DC G=-11 Pole @ 0.4Hz

1 Zero @ 15.9Hz

Coil Driver Chassis

Actuator

ADECapacitive Position Sensor Satellite

Box

T240 DC G=113

3rd Order Chebyshev,

Fc = 10KHz with a notch @ 65536Hz

T240 Interface Board

Anti-Alias Filter

To ADC

10LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsGS-13 Channel

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LIGO-D0902742

v13/29/2010

11:13:34 AMC:\Ben\Seismic\ISI\BSC_ISI\BSC GS13 Interface\BSCGS13Channel.SchDoc

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aLIGO HAM GS-13 Interface Channel

Drawn by:Ben Abbott

Ligo ProjectCalifornia Institute of TechnologyMassachusetts Institute of Technology

3.16K

R8

12.7K

R13

12.7K

R4

1uF, poly

C6

5.6nF, polyC3

VCC

VEE

1

TP4

1

TP3

Nominal Whitening is a 10Hz Zero, anda 50Hz Pole. Overall gain=2 @DC.

There is also 1 pole @ 2KHz, and 1 pole @ 2.24KHz.

10Hz50Hz

2.24KHz

TP5

C10

1UF

C5

1UF

GND

GND

GS13_P

GS13_NR11

0 OHM

R23

0 OHM

1

TP10

1

TP6

GND

2

31

A

84

U3A

AD8672ARZ

5

67

B

84

U3B

AD8672ARZ

R5

2K

R10

2K

R16

2K

R20

2K

1V at TP5 = +1V at TP10,and -1V at TP6

GS13_In+

GS13_In-

R21100K

R1100K

GND

GND

2

31

A

413 U1A

LT1125CS

1012

11

C

413

U1CLT1125CS

5

67

B

413

U1BLT1125CS

5K

R7

1uFC1

1uFC4

5KR19

5K

R2

5K

R17

5K

R14

5KR6

1

TP2

1

TP7

GND

Gain = 1 + 2*(5K / Rg)

1

TP1

1

TP9

68pF

C7

Cap

68pF

C9

Cap

N/P

Rg1

1K

R3

1K

R18

16nFC8

2KHz

VCC

VCC

VEE

VEE

VEE

VCC

Filter1

Filter2

N/P

R22

12.7K

R24

12.7K

R15

N/P

C12

N/PC11

VCC

VEE

1

TP8

5

67

B

84

U2B

AD8672ARZ

2

31

A

84

U2A

AD8672ARZ

14

1516

D

413

U1DLT1125CS

VEE

VCC

GND

68pF

C2

R9

0 OhmsR12N/P

GND

VCC

VEE

1uF

C29

1uF

C30

GND

GND

RG1

RG2

RG1

1.1K

RG2

1

2

GN

D3

V+

4

N.C.5

6

V-

7

8

K?Max4659

1

2

GN

D3

V+

4

N.C.5

6

V-

7

8

K?Max4659

Gain

Gain

1uFC1

1uFC4

VCC

VEE

D?

Diode

D?Diode

1uF

C1

VEE

D?Diode

1uFC4

VCC

D?Diode

GND

GND

Nominal Gain = 10

Nominal, no Whitening

Switched Gain = 1

Switched Whitening

11LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsL4C Channel

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6

D D

C C

B B

A A

2 2

LIGO-D1000757

v23/30/2010

8:42:42 AMC:\Ben\Seismic\ISI\BSC_ISI\BSC L4C Interface\BSCL4CChannel.SchDoc

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aLIGO BSC L4C Interface Channel

Drawn by:Ben Abbott

Ligo ProjectCalifornia Institute of TechnologyMassachusetts Institute of Technology

TP5

C10

1UF

C5

1UF

GND

GND

L4C_P

L4C_N

R11

0 OHM

R23

0 OHM

1

TP10

1

TP6

GND

2

31

A8

4

U3A

AD8672ARZ

5

67

B

84

U3B

AD8672ARZ

R5

2K

R10

2K

R16

2K

R20

2K

1V at TP5 = +1V at TP10,and -1V at TP6

L4C_In+

L4C_In-

R21100K

R1100K

GND

GND

2

31

A

413 U1A

LT1125CS

1012

11

C

413

U1CLT1125CS

5

67

B

413

U1BLT1125CS

5K

R7

1uFC1

1uFC4

5KR19

5K

R2

5K

R17

5K

R14

5KR6

1

TP2

1

TP7

GND

Gain = 1 + 2*(5K / Rg)

1

TP1

1

TP9

68pF

C7

Cap

68pF

C9

Cap

N/P

Rg1

1K

R3

1K

R18

16nFC8

2KHz

VCC

VCC

VEE

VEE

VEE

VCC

14

1516

D

413

U1DLT1125CS

VEE

VCC

GND

68pF

C2

R9

0 OhmsR12N/P

GND

VCC

VEE

RG1

RG2

RG1

1.65K

RG2

1

2

GN

D3

V+

4

N.C.5

6

V-

7

8

K?Max4659

Gain

1uFC1

1uFC4

VCC

VEE

D?

Diode

D?Diode

GND

Nominal Gain = 7

Switched Gain = 1

12LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsRack Layout

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6

D D

C C

B B

A A

7 7

LIGO-D0901301

v13/29/2010

11:18:04 AMC:\Ben\Seismic\ISI\BSC_ISI\BSC_ISI_7.SchDoc

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B

BSC ISI System Wiring

Drawn by:Ben Abbott

Ligo ProjectCalifornia Institute of TechnologyMassachusetts Institute of Technology

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MY1

T-240 Interface Pod 3

T-240 Interface Pod 2

T-240 Interface Pod 1

ISI PCIX IO Interface Chassis 1

ISI Interface Pod 1ISI Interface Pod 2ISI Interface Pod 3

AdL Anti-Image Chassis

ISI Coil Driver Pod 3

ISI Coil Driver Pod 2

ISI Coil Driver Pod 1

ISI Control CPU

Anti Alias Rev 12

Anti Alias Rev 12Anti Alias Rev 12

Binary In/Out ChassisBinary In/Out Chassis

Timing Slave

AdL Anti-Image Chassis

Anti Alias Rev 8

Binary I/O Chassis8 CH. VALVE DRIVER

HEPI Components

13LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI ElectronicsTest Procedures

•GS-13 Preamp

•GS-13 Interface

•L4C Interface

•Trillium Interface

•Capacitive Position Sensor Interface

•ISI Coil Driver

•Anti-Image/Anti-Alias Filter Chassis

•Entire BSC System

14LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI Electronics

Low Frequency Zero Filter

15LIGO-G1000411-v3

March 30, 2010

aLIGO BSC ISI Electronics

Low Frequency Zero Filter Frequency Response

16LIGO-G1000411-v3

March 30, 2010

aLIGO BSC Electronics DocDb Numbers

GS-13 PreAmp D0902056-v1 GS-13 Socket Board D0902011-v3 GS-13 Interface Board D1000755-v1 L4C PreAmp D1000059-v1 L4C Interface Board D1000757-v1 Trillium Pressure and Connector Board G0900662-v2 Trillium Interface Board D1000749-v2 Capacitive Position Sensor Interface D1000057-v1 Coarse/Fine Coil Driver D0901039-v2 AA/AI Interface Board D070081-v2 ISI Interface Back Board D1000060 -v1 Overall BSC ISI Wiring Drawing D0901301-v2