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The 40m Upgrade Frequency Generation Box is going to be installed in the 1Y1 rack. It will be used to generate the modulation and the demodulation frequencies.
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== Pictures ==
This is the first picture as I start putting it together.		 = RF Generation Box =
The 40m Upgrade Frequency Generation Box is going to be installed in the 1Y1 rack. It will be used to generate the modulation and the demodulation frequencies.
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<<ImageLink(DSC_2409.JPG, width=1000)>> = Pictures =
 . This is the first picture as I start putting it together.
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== Things to do ==
[[Electronics/RF_System/schedule/RF_Generation|schedule]]		  . {{attachment:pic_RFgenbox.jpg}}

## <<ImageLink(DSC_2409.JPG, width=1000)>>

= Things to do =
[[Electronics/RF_System/schedule/RF_Generation| schedule]]
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|| Teflon sheet || base mounting plate || 12"x24"x3/8" || [http://www.mcmaster.com/# McMaster] || 8545K37 || 2 || (./) ||
|| stainless steel spacers || plate support || 1/4" OD, 3/8" Length, 8-32 || [http://www.mcmaster.com/# McMaster] || 91125A453 || 20 || (./) ||		 || Teflon sheet || base mounting plate || 12"x24"x3/8" || [[http://www.mcmaster.com/#|McMaster]] || 8545K37 || 2 || (./) ||
|| stainless steel spacers || plate support || 1/4" OD, 3/8" Length, 8-32 || [[http://www.mcmaster.com/#|McMaster]] || 91125A453 || 20 || (./) ||
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|| clamps || holding component on plate || [attachment:bracket.png drawing] || Mike || - || 12 || cancelled || || clamps || holding component on plate || [[attachment:bracket.png|drawing]] || Mike || - || 12 || cancelled ||
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[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A33740-ND Bulkhead Mounted CPC Connector] [[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A33740-ND|Bulkhead Mounted CPC Connector]]
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attachment:CPCpowerConnector.jpg {{attachment:CPCpowerConnector.jpg}}
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[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A32510-ND DigiKey: A32510-ND] [[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A32510-ND|DigiKey: A32510-ND]]
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[attachment:Visio-RFfrequencyBoxMechanics.pdf Front and back panel prototype designs] [[attachment:Visio-RFfrequencyBoxMechanics.pdf|Front and back panel prototype designs]]
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[attachment:frequencyGenerationBox_BackPanel.fpd Back Panel] [[attachment:frequencyGenerationBox_BackPanel.fpd|Back Panel]]
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[attachment:frequencyGenerationBox_FrontPanel.fpd Front Panel] [[attachment:frequencyGenerationBox_FrontPanel.fpd|Front Panel]]
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== Links ==
[http://www.ligo.caltech.edu/~costheld/ Chub's Web Page with lots of electronics diagrams and pictures]		 = Links =
[[http://www.ligo.caltech.edu/~costheld/|Chub's Web Page with lots of electronics diagrams and pictures]]
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= Early Thoughts =
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This box will be made from a [https://dcc.ligo.org/DocDB/0000/D070013/002/LIGO-D070013-v2.pdf Metalcraft 2U chassis]. <<BR>>
-------
= Some Thoughts in Early Days =
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[http://ilog.ligo-wa.caltech.edu:7285/advligo/RfDistributionAmplifier This] is an inspirational model.  . This box will be made from a [[https://dcc.ligo.org/DocDB/0000/D070013/002/LIGO-D070013-v2.pdf|Metalcraft 2U chassis]].
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The box will contain a crystal oscillator to generate the 11 MHz sideband. From that a frequency multiplier will provide the 55MHz modulation.  . [[http://ilog.ligo-wa.caltech.edu:7285/advligo/RfDistributionAmplifier|This]] is an inspirational model.

 . The box will contain a crystal oscillator to generate the 11 MHz sideband. From that a frequency multiplier will provide the 55MHz modulation.
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The box will also provide the signals for the demodulation at the LSC rack.  . The box will also provide the signals for the demodulation at the LSC rack.
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The amplitude of the modulation signals going to the EOM will be tunable by means of two mechanical knob-attenuators and by Voltage Controlled Attenuators (VCA).  . The amplitude of the modulation signals going to the EOM will be tunable by means of two mechanical knob-attenuators and by Voltage Controlled Attenuators (VCA).
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The front panel will have the following inputs:
 * 11 MHz
 * 11MHz VCA
 * 55MHz VCA		  . The front panel will have the following inputs:
   * 11 MHz
   * 11MHz VCA
   * 55MHz VCA
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This will be the outputs in the front panel:
 * 11 MHz to the EOM
 * 11 MHz to the LSC
 * 55 MHz to the EOM
 * 55 MHz to the LSC		  . This will be the outputs in the front panel:
   * 11 MHz to the EOM
   * 11 MHz to the LSC
   * 55 MHz to the EOM
   * 55 MHz to the LSC
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the front panel will also host knobs of the two attenuators.  . the front panel will also host knobs of the two attenuators.

## page was moved from Upgrade 09/RF System/schedule/RF Generation
== List of things to do ==

 I. Construction of Frequency Generation Box
   1. coax cables order (1hr): measure lengths, compile list, give list to Steve
   1. protection capacitors (1hr): design, ordering/stealing from Downs
   1. cooling system installation (1/2 day)
    * cutting mica board, drill board, drill back panel, drill holes for cooling fins, install cooling fins, install LNVRs
   1. external powering (1/2 day)
    * drill main hole and screw holes for D-connector, get D-connector pins from Downs, connect metal pins to connector, drill screw holes for the power terminal block on the right end side; drill hole for power switch; get poer switches from wilson house; connect power switches to terminal block
   1. power cables routing (1/2 day)
    * connect cables from the D-connector's pins to the power terminal block, interconnect the ground of the LNVRs, solder the LNVRs ground connections, connect power capacitors,
   1. front and back panel design (2hr)
 I. Characterization
  1. prepare check list
  1. write a LIGO technical document
  1. signal amplitude measurement: amplitude at the EOM outputs and at the demod outputs
  1. phase noise measurement: 11MHz output and 55MHz output
 I. Frequency Box Installation
   1. connection to the rack power
   1. cable connections

Contents

  1. RF Generation Box
  2. Pictures
  3. Things to do
    1. Powering
    2. Parts
  4. Links
  5. Some Thoughts in Early Days
    1. List of things to do

RF Generation Box

The 40m Upgrade Frequency Generation Box is going to be installed in the 1Y1 rack. It will be used to generate the modulation and the demodulation frequencies.

Pictures

  • This is the first picture as I start putting it together.

  • pic_RFgenbox.jpg

Things to do

schedule

  1. get parts
  2. cut 5 3x3" copper sheets

Powering

Element

DC In

Max Amp In

5x multiplier

+15

0.200

ZFL-1HADX Ampl

+15

0.115

voltage contr'd att. 1

+15

0.020

voltage contr'd att. 2

+15

0.020

11 MHz oscillator

+15

0.330

29.5 MHz oscillator

+15

0.330

Total 15V

1.015

ZHL-2X-S 1

+24

0.600

ZHL-2X-S 2

+24

0.600

ZHL-2X-S 3

+24

0.600

Total 24V

1.800

Parts

Assembling Parts

Part

Function

Description

Provider

SN

Q.ty

Status

Teflon sheet

base mounting plate

12"x24"x3/8"

McMaster

8545K37

2

(./)

stainless steel spacers

plate support

1/4" OD, 3/8" Length, 8-32

McMaster

91125A453

20

(./)

LIGO std power connector

power feed thru

4-pin

Downs lab

drill room bin 108/6

2

(./)

clamps

holding component on plate

drawing

Mike

-

12

cancelled

terminal blocks

power distribution

6-holes

McMaster

7527K46

6

(./)

terminal blocks

power distribution

4-holes

McMaster

7527K44

4

(./)

spade terminals

power distribution

16-14 wire

McMaster

69145K436

1 pkg (100pcs)

(./)

spade terminals

power distribution

12-10 wire

McMaster

69145K438

1 pkg (100pcs)

(./)

jumpers

to terminal blocks

-

McMaster

7527K59

1 pkg (25pcs)

(./)

screws

frequency multiplier

2-56, 1/2"

McMaster

95345A018

1 pkg (50pcs)

(./)

screws

frequency multiplier

2-56, 5/8"

McMaster

95345A019

1 pkg (50pcs)

(./)

screw kit

-

Flat, Phillips, 4-40, 6-32, 8-32, 10-24, 10-32

McMaster

91815A224

1 kit (1200pcs)

(./)

screw kit

-

Pan, Phillips, 4-40, 6-32, 8-32, 10-24, 10-32

McMaster

93175A212

1 kit (1200pcs)

(./)

nut assortment

-

Machine Screw Hex Nut Assortments

McMaster

90625A207

1 kit

(./)

washer kit

-

12 sizes

McMaster

92075A212

1kit (1680pcs)

(./)

RF Components

Part

Provider

SN

Q.ty

Status

Power Splitter

Digi Key

ZFRSC-42+

4

ordered

Powering

Bulkhead Mounted CPC Connector

CPCpowerConnector.jpg

DC Voltage Input

Dsub connector, 9pin, female socket.

DigiKey: A32510-ND

Front and Back Panels

Front and back panel prototype designs

Front and Back Panels files for FrontPanelExpress 4.02.

Back Panel

Front Panel

Links

Chub's Web Page with lots of electronics diagrams and pictures


Some Thoughts in Early Days

  • This box will be made from a Metalcraft 2U chassis.

  • This is an inspirational model.

  • The box will contain a crystal oscillator to generate the 11 MHz sideband. From that a frequency multiplier will provide the 55MHz modulation.

It will be possible to opt between an external source of the 11MHz modulation rather than the internal oscillator.

  • The box will also provide the signals for the demodulation at the LSC rack.
  • The amplitude of the modulation signals going to the EOM will be tunable by means of two mechanical knob-attenuators and by Voltage Controlled Attenuators (VCA).
  • The front panel will have the following inputs:
    • 11 MHz
    • 11MHz VCA
    • 55MHz VCA
  • This will be the outputs in the front panel:
    • 11 MHz to the EOM
    • 11 MHz to the LSC
    • 55 MHz to the EOM
    • 55 MHz to the LSC
  • the front panel will also host knobs of the two attenuators.

List of things to do

  1. Construction of Frequency Generation Box
    1. coax cables order (1hr): measure lengths, compile list, give list to Steve
    2. protection capacitors (1hr): design, ordering/stealing from Downs
    3. cooling system installation (1/2 day)
      • cutting mica board, drill board, drill back panel, drill holes for cooling fins, install cooling fins, install LNVRs
    4. external powering (1/2 day)
      • drill main hole and screw holes for D-connector, get D-connector pins from Downs, connect metal pins to connector, drill screw holes for the power terminal block on the right end side; drill hole for power switch; get poer switches from wilson house; connect power switches to terminal block
    5. power cables routing (1/2 day)
      • connect cables from the D-connector's pins to the power terminal block, interconnect the ground of the LNVRs, solder the LNVRs ground connections, connect power capacitors,
    6. front and back panel design (2hr)
  2. Characterization
    1. prepare check list
    2. write a LIGO technical document
    3. signal amplitude measurement: amplitude at the EOM outputs and at the demod outputs
    4. phase noise measurement: 11MHz output and 55MHz output
  3. Frequency Box Installation
    1. connection to the rack power
    2. cable connections

Electronics/RF_System/frequency_generation_box (last edited 2013-04-24 20:44:28 by SureshdoravariATligoDOTorg)