Band 7 Cartridge Operation Manual
Contents
1. ALMA Project Band 7 Cartridge Operation Manual Doc FEND 40 02 07 00 025 A MAN Date 2006 03 24 Status Draft Page Page 1 of 15 Band 7 Cartridge Operation Manual FEND 40 02 07 00 025 A MAN Version A Status Draft 24 March 2006 Prepared By Name s and Signature s Organization Date S Mahieu Sylvain IRAM 2006 03 24 M ah ieu pear 15 55 37 02 00 B Lazareff Approved By FE Sys Engr Name and Signature Organization Date H Rudolf ESO yyyy mm dd K S Saini NRAO Released By FE IPT Leads Name and Signature Organization Date G H Tan ESO yyyy mm dd J Webber NRAO Doc FEND 40 02 07 00 025 A MAN ALMA Project Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page2of15 Change Record Version Affected E Request Reason Initiation Remarks Section s 2006 03 24 New document ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 3 of 15 Table of Contents 1 INTRODUCTION rasanne e aa a DENDUM M D 4 Pel PUR OSC e 4 NM i0 o cc 4 1 3 Applicable dOOUIEnDDS usano mtn atcur qct dicen GS nin cipi acces 4 l4 Reference docublie liess o odio co bibis cubi Diae DA eu aasa c ns dista 4 2 DESCRIPTION uu od de E DERE er Uu E S2. 7 cartridge is one of the receiver cartridges which populate the front end dewar As an illustration annotated photographs of the first Band 7 cartridge and WCA are presented in Figure 2 and the cartridge baseplate is shown on the Figure 1 below Its role is to fulfill a certain amount of functional requirements described in AD1 For the purposes of these requirements the cartridge includes the cold optics feed horn mirrors polarizing grids components needed to couple the LO to the mixers IF amplifiers sensors for temperature monitoring and any type of necessary interconnects Although the cartridge body itself is not part of this Work Element the mechanical mounting of all components depicted in figure 1 so that the requirements mentioned in this document are met is part of this Work Element All vacuum and cryogenic services are provided by the front end dewar Figure 1 Band 7 cartridge baseplate ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 6 of 15 IF OUTPUT CABLES 2 FI 4 SEGRE MI an i l f 4D IF AMPLIFIER ct IF INPUT CABLES Figure 2 Left Complete Cartridge right WCA with warm IF amplifiers 22 Significant Parameters RF Input port 275 GHz to 370 GHz extended to 373 GHz LO input port 283 GHz to 365 GHz IF Bandwidth 4 GHz dual sideband 2SB upper and lower sideband
3. centred at 6 GHz ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page7of15 2 3 Cartridge ESD protection board description In order to protect the cartridge sensitive components i e SIS junctions and HEMT amplifier transistor from both excessive DC bias and electro static discharges ESD a protection board has been inter staged at the cartridge bias input ESD protection is realized by parallel connected 2 terminal devices with appropriate threshold voltages A special case is the gate voltage of the HEMTs because they have an internal dividing network for extra protection the effective voltage range is 5V Nevertheless during the shipment the cartridge is always sealed within ESD protective packaging material It should only be moved from and to ESD safe areas At receipt the following should be carried out e Preparation A clean ESD safe area consisting of the following items should be established in any location in the integration center facility where the cartridge is to be handled o A properly grounded static dissipative surface on which to place the product o Static dissipative floor and floor mat o A properly grounded conductive wrist strap for each person to wear while in the process handling the product e Unpacking o Place the shipping container onto the static dissipative surface o Open the shippi
4. pU MU 5 2 1 Equipment Definition ssseseseseseseeeesseesseesssesseeesstrsseesstrssstesseesseeesseeessresseesseesset 5 22 Slg itic nt Parameters oinin o s aE 6 2 3 Cartridge ESD protection board description ssseee 4 2 4 Putting the Cartridge bias module and WCA together sssss 7 2 4 1 DC Power Requirements oot inline MED EH oed pe Me Ud be UCM EUIS 9 2 5 Quick Overview of the LO driver operation and settings sssssss 9 2 5 1 LA Driver brief description ie i eret eR pe EE e ie Le tui e hesn RS Edu MS 9 2 5 2 Connecting Switching ON Power and establishing Phase Lock 9 2 6 Band 7 Cartridge operation and settings seen 13 A2 Carttid Descriptio sersan dea ums ud E K E EE EEA 13 2 6 2 Cartridge components biasing Sequence esee ener eoa osa eo aea iaa nna anas 14 ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page4of15 1 Introduction 1 1 Purpose This document is the user guide manual for the first ALMA Band 7 Cartridge 1 2 Scope This document applies to the following level 3 work element FEND 40 02 07 00 024 A LIS Band 7 Cartridge 1 CIDL The statement of work covering this work package is described in RD1 This is a manual for operating the first band 7 Cartridge associated with a Warm Cartrid
5. ARRAY Select the SIS Amp Bias and LO tabs under the select monitor points pane and tick every point to be monitored B Testcartridge M amp C 1 02 Eile Edit Operate Tools Window Help CAN Interface amp Execution SISIV Measurement Select Monitor Points SIS Ampl LO Control SIS Ampl Bias LO IV GET PHOTOMIXER STATE E GETPHOTONPON BIAS IV GET PA 3V SUPPLY V v Sale D IV GETPAADRAINV V GET AMC B DRAIN V esr Worcor SEW M GETPAADRAINC MM GET AMC B DRAIN C GET PLL 5 SUPPLY V M GETPAAGATEY GET AMCB GATE V M GET PLL IF ATTENUATOR 1 M GETPABDRAINV MM GET AMC MULT C V GET PLL IF ATTENUATOR 2 Iv gETPABDRAINC M GETAMC MULTD V P GETPLL LOCK V MGETPABGATEY p cer MC EDRAINV GET PLL CORR V VV GET AMC 3V SUPPLY Y GET AMC E DRAIN C M GET PLL ASSEMBLY T M geraMc A DRAN GET AMC E GATE V Iv GET PLL REF TOTAL P M GET AMC ADRAINC M GET AMC F DRAIN V IV GET PLL IF TOTAL P M GETAMCAGATEV I GET AMC F DRAIN C Select all Deselect all B Testcartridge M amp C 1 02 Ele Edit Operate Tools Window Help CAN Interface amp Execution SIS IV Measurement Select Monitor Points SIS Ampl LO Control f Abou SIS Amp Bias Lo Pao Poi M Pol 1LNA1 State M Pol 1LNA1Stagei Drain V M Pol 1LNA1 Stage2 Drain VIV Pol 1 LNA1Stage3 Drain IV Pol1LNAlStagelDran C M PoliLNA1Stage2 Drain C Pol 1 LNA1 Stage3 Drain IV PolilNAlStagelGate V M Pol 1 LNA1 Stage2 Gate V V Pol 1 LNAI St
6. O Save amp Recall Bias settingSave_ Recal SIS Ampl Monitors LO Monitors Active Multiplier Chain PLL vd V Id ma m amc A 354 55 94 0 48 IF Attenuator 5 dB PLL Ass Temp3366 c AMCB 4 05 23172 101 PLL Ref TotalP 2 68 v AMCE 191 17587 0 07 PLL Lock Voltaga 2 v PLLIFTotdP 132 v AMCF 208 0 44 PLL Corr Voltag 16 V PLL 5VSupply4 20 V AMC 3V Supply 0 06 V AMC Mult C V v 4 88 _ M Power Amplifiers AMC MultD V V 3 51 Ea ea mA Em Vl Photomixer State Disable PAA 1 03 56 35 0 21 Photomixer Bias 40 38 V vro Locked Below REF PAB 0 01 1 37 0 17 Photomixer Bias 3 21 mA YTO Locked Above REF PA 3V Supply 236 V YTO Freq 15 708 GHz The small rectangular LEDs on the GUI placed next to the monitored parameters under the LO Monitors tab should be all green Any red LED indicates that the value of the corresponding parameter is out of its optimal range 2 6 Band 7 Cartridge operation and settings 2 6 1 Cartridge Description The LO triplers driven by the LO driver assembly are pumping sideband separating mixers junctions through the LO RF coupler Then the 2SB assemblies made of an RF ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 14 of 15 coupler followed by an IF hybrid coupler in turns produce tw
7. Oscillator LO Driver Assembly generates the microwave signal needed to drive the coolable frequency triplers in the front end cartridge which in turn generate the LO power to pump the SIS junction based down converters It does so by frequency multiplication and subsequent amplification of the 15 21 GHz signal from a YIG oscillator The output is phase locked to the reference signals provided by the ALMA LO reference distribution system Lab synthesiser 2 5 2 Connecting Switching ON Power and establishing Phase Lock Once the WCA is mounted onto the cartridge baseplate e Ensure forced air flow across the heat sink on the YIG tuned oscillator assembly ALMA Project Doc Band 7 Cartridge Date Operation Manual Status Page FEND 40 02 07 00 025 A MAN 2006 03 24 Draft Page 10 of 15 e With the power supply turned OFF make connections to the 15 pin D type serial T O connector and the 25 pin D type DC power connector on the back of the LO driver assembly Applying power at this point should turn on the LO driver assembly and activate the CAN interface between the pc and the WCA Cartridge for later monitoring and control activities e Finally apply the FLOOG signal 0 dBm to the coaxial connector located on the back of the LO driver assembly and the LO reference signal photodiode output minimum 50 nW to the wave guide marked as such on the PLL module At this point the LO driver assembly is re
8. ady to establish phase lock to the input reference signals and be used CAN Interface setup The CAN interface control on the CAN Interfaces amp Execution tab should have the same values as the CAN Interface is configured to use In our case CAN is the correct value The AMBSII inside the hardware is configured to have the node address 13 hex by default and the node address in the software is set to the same value by default Press Scan amp Connect to CAN bus to find the Bias Electronics on the bus If everything is OK you should get a message saying Program running Do not turn off power to receiver modules fx TestCartridge M amp C 1 02 Ele Edit Operate Tools Window Help CAN Interface amp Execution SIS Iv Measurement Select Monitor Points SIS Ampl LO Control _Abou_ CAN nodes found on bus error out 2 Node Addresdi3 Serial Numberic Ec cs 2s 4o B o A CAN Interface Detected CAN Nodes CAN1 Program running Do not turn off power to CAN nodes Node address 9s ICAN node with adress x13 found at Node index 00 S N 10 EC CA 29 00 08 00 AS Scan amp Connect to CAN bus Disconnect from CAN bus C 2004 NRAO Exit Program ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 11 of 15 ATACAMA LARGE MILLIMETER
9. age3 Gate IV Pol 1 LNA2 State IV Pol 1LNA2 Stagel Drain V M Pol 1 LNA2 Stage2 Drain VIV Pol 1 LNA2 Stage3 Drain IV Pol1LNA2 StagelDran C I PoliLNA2 Stage2 Drain C Pol 1 LNA2 Stage3 Drain V PoL1LNA2 StagelGateV M PoLilNA2 Stage2 Gate V M Pol LNAZ Stage3 Gate X IV Pol 15I51 Mode IV Pol 1Tempi M po isisiv M PoliMagiV M Poli Temp2 M potisisic M PoLiMagiC IV Poli Temp3 M Pol 1 SIS2 Mode IV Pol 1 MIX Heat State M pol iSIs2 V M poliMag2 V M Pol 1MIX Heat C M po isis2C M PoLiMag2C IV Pol 1 HEMT Led State Select all Deselect all Select the LO and SIS tab under the SIS Ampl LO Control pane on the monitor and control GUI and enter 14 987 GHz and 20 977 GHz for YTO Low freq and YTO High freq respectively Select whether the PLL should Lock YTO above or Lock ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 12 of 15 YTO below one sixth of the LO reference signal frequency Next manually set the YTO to the appropriate target frequency by entering the frequency and pressing the set button The target frequency is one sixth of the LO reference frequency the FLOOG frequency The sign is determined by the selection made earlier of whether the YTO should lock above or below one sixth of the LO reference signal frequency An approximate number will do For instance inputting one six
10. ge Assembly WCA This document does not include test data from individual assemblies That data is unit assembly specific and is included in a separate document s 13 Applicable documents The following documents are part of this document to the extent specified herein If not explicitly stated otherwise the latest issue of the document is valid Reference Document Title ALMA Doc Number ADI Band 7 Cartridge Technical ALMA 40 02 07 00 002 A SPE Specifications AD2 Band 7 Cartridge Experimental A set of documents including the Procedures for Acceptance Tests present one AD3 Data formats for cartridge operating FEND 40 02 00 00 016 A STD parameters AD4 Front End Integration Center Database FEND 40 09 03 00 007 A DSN Design Description AD5 Band 7 Cartridge Acceptance Test Plan FEND 40 02 07 00 008 A PLA 1 4 Reference documents The following documents contain additional information ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page5of15 Reference Document Title ALMA Doc Number RD1 Band 7 Cartridge Statement of Work FEND 40 02 07 00 001 B SOW RD2 Band 7 Cartridge Management Plan Under preparation RD3 PAI amp PAS Procedures for the ALMA FEND 40 02 07 00 005 A PRO Band 7 Cartridge 2 Description 2 1 Equipment Definition The Band
11. n reduced to a minimum apply the correct bias voltage read from the table provided e The junction is then ready to be pumped by the LO signal that can be adjusted in the LO tab under the LO pane This is performed by adjusting the corresponding polarization either A or B LO power amplifier drain voltage e Once the mixers bias points are set correctly receiver tests and or observation can be carried out ATACAMA LARGE MILLIMETER ARRAY ALMA Project Band 7 Cartridge Operation Manual Doc f Date Status Page FEND 40 02 07 00 025 A MAN 2006 03 24 Draft Page 15 of 15 TestCartridge M amp C 1 02 N S BUB i o lai amp amp 2 8 EE m o e u i o f z a aul Je Closed TEN SYN 0 21 y230 ss Ij 307 Closed Loop ij 236 Set aroo Set Closed Loop j j 23 set 1931 00 set
12. ng container and place the ESD protective packaging containing the cartridge on the static dissipative surface o Cut the antistatic sealing tape with a Utility Knife remove the cartridge and place it onto the static dissipative surface Save all ESD protective packaging for later e Any required visual inspection should be performed at this time e If the cartridge has to be moved to another place it has to be placed in its antistatic bag 2 4 Putting the Cartridge bias module and WCA together ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 8 of 15 In the test setup shown in the Figure 3 below one can see the different set of equipment involved in the cartridge test Bias PCI CAN CAN cable ya __WCA Test Cable Modus eM d NI 777357 02 WCA Band 7 M amp C Interface WCA c n artridge PC E Plate j W2000 Labview version 6 7 E tbd ES WR10 9 V PS i Harmonic 30MHz generator Xtal or Synth 24V PS 15V PS Synthesizer HOMIES 12 18 GHz 46V PS Power supplies and wiring to J2 Figure 3 test setup description A Personl Computer for the control through a CAN card and a GUI labview code A CAN cable between the pc and the Cartridge Test Moni
13. o IF sideband signals called USB and LSB These IF signals are then amplified by three stages cooled HEMT amplifiers and room temperature IF amplifiers Furthermore in order to suppress the Josephson current supraconducting wire magnets are used Moreover temperature sensors are used to monitor each of the cartridge stage temperature All of these cartridge components require a DC supply circuitry as well as a PC interface to monitor and control the bias lines 2 6 2 Cartridge components biasing sequence HEMT biasing Next select the SIS Amp tab under the SIS Ampl LO Control pane on the monitor and control GUI and enter the required drain and current combinaison for each of the four amplifiers mounted into the cartridge in PolO and Poll in agreement with the table provided by the manufacturer Pressing the enabled disabled button and set buttons for each of the stages voltage current combinaisons will enable the amplifiers and set the bias points correctly That can be checked in the SIS Ampl Monitors pane Junction polarization The next step is to polarize the junctions correctly in agreement with the table provided by the cartridge manufacturer bearing in mind that the junction voltage current are LO frequency dependant e With zero volt applied on mixer junction bias line adjust the corresponding mixer magnet current until the Josephson current reaches a minimum e Once the Josephson current has bee
14. th of the LO reference frequency will work just fine here the phase locking algorithm will fine tune this setting later Next set the IF attenuators to about 3 dB to begin with more if the LO reference signal is greater than 50 nW Click on the Lock LO button The appropriate LED should light up on the GUI under LO Monitors tab indicating acquisition of lock to the desired sideband of the LO reference signal Adjust the IF attenuator setting so that the output of the IF level detector is about 1 9 V ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page 13 of 15 P TestCartridge M amp C 1 02 File Edit Operate Tools Window Help CAN Interface amp Execution SIS IV Measurement Select Monitor Points SIS Ampl LO Control SIS Amp Bas Lo Power Amplifier Active Multiplier Chain Vd V vd D PAAJ 104 oi0 _ Set AMCEj ooo Hooo Set PAB 0 00 0 00 _ Set AMC B Drain IMC D Vm b 0 00 _ Set 0 00 Photomixer State OFF z YTO Low freq GH2 TO High freq GHz YTO freq GHA 15 722 set 14 987 320 877 PLL Atenuat jl 5 Set The YTO min max frequency has to be set and they are different for each Band The values above are nominal values for Band 6 Contact the LO group for details about the other bands The program will lock the LO but not keep it locked lockvrObeow x Lock L
15. tor and Control module The test cartridge Monitor and Control module The WCA test cable The WCA itself The Bias Module The cartridge Necessary equipment for phase locking DC power supplies 1 Fit the bias module onto the cartridge baseplate with two screws 2 fit the WCA onto the cartridge paying attention to the blind mate connections LO DC and IF ALMA Project Doc FEND 40 02 07 00 025 A MAN Band 7 Cartridge Date 2006 03 24 Operation Manual Status Draft Page Page9 of 15 3 engage the overall assembly into the cryostat using the necessary tooling cartridge loader and making sure that the cold cartridge is properly engaged fit the baseplate M8 screws fit the DC power supply cable at the back of the WCA fit the serial input output cable at the back of the WCA a DU wo make sure that the power supplies overcurrent are set to the correct value see 2 4 1 8 follow the 2 5 chapter step by step explanations to power the WCA and cold cartridge assembly up 2 4 1 DC Power Requirements 6 V 1 5 A 1A 15 V 1 2 A 15 V 50 mA 24 V 0 25 A 49V 0 5A CAN interface 8V 0 5A warm IF amplifiers 2 5 Quick Overview of the LO driver operation and settings 2 5 1 LO Driver brief description The LO driver operation is only briefly described since this is not the scope of this document for more detailed information please refer to the LO Driver user manual The First Local
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