Multi-Channel Electronics (MCE) 

Warning: This page is obsolete. The current MCE document list is on the MCE Wiki:
http://e-mode.phas.ubc.ca/mcewiki/index.php/MCE_Documents.

Introduction

• Functional Description of the Multi-Channel Electronics  [PDF]  (Sep. 27, 2003)
• MCE Getting Started Manual  [PDF]  (SC2_ELE_S580_520) 
• MCE Interface [PDF]  (SC2_ELE_S580_005) 
• MCE-Cryostat Diagram - cartoons of squid chain setup, servo loop calculations, and word-sizes   [PDF]  
• Output Drive Calculations [xls] 
• Visit MCE/MAS Wiki
• Download Firmware: sof/pof/jic

MCE Hardware

Description	Block Diagram	Schematics	Rev	Features
Clock Card  [PDF*]  (S581)	[PDF]	[PDF]	B5	-
Readout Card  [PDF*]  (S582)	[PDF]	[PDF] [PDF]	B9 E0	low-power RC
Address Card  [PDF*]  (S584)	[PDF]	[PDF] [PDF]	C4 D0	-
Bias Card  [PDF*]  (S583)	[PDF]	[PDF] [PDF] [PDF] [PDF] [PDF] [PDF] [PDF] [PDF] [PDF]	D6 D7/8 D11 E0 F0 F1 F2 F3 F4	original Design  High-current det_bias  High-current det_bias/no heater  Multiple det_bias lines  Multi det_bias & MHz-response bias lines  low-noise bias lines turned off  power turned off on ln_bias lines   minor change in ln_bias circuit  low 1/f-noise opamp for channel 0-15  low 1/f-noise opamp for channel 15-31
Instrument Backplane MCEv1 (S587-101) 5 MDM [PDF*]	[ ]	[PDF] [PDF]	C3 C5	-
Instrument Backplane MCEv2 (C587-101) 3 MDM 3 MDM                                                 (C587-201) 5 MDM	[PDF]	[PDF] [PDF] [PDF]	B C2 A	-
Bus Backplane MCEv1  [PDF*]  (S586)	[PDF]	[PDF]	C
Bus Backplane MCEv2 (C586-101) 3 MDM                                      (C586-201) 5 MDM	-	[PDF] [PDF]	A D
Filter Board MCEv1 (S587-111)		[PDF]	B2	-
Filter Board MCEv2 (C587-111) - 3 MDM                                  (C587-210) - 5 MDM	-	[PDF] [PDF]	A	-
MDM Breakout Test Board MCEv1	[XLS]	-	-	-
Power Supply Unit Assembly (S585) [doc]      Power Supply Unit Board (S585-103)      Power Supply Unit Controller (S585-102)      Power Supply Unit Wiring (S585-104)	[ ]	[PDF] [PDF] [PDF]	B G8 B	Obsolete
Linear-Feed Card	-	[PDF]	-	-

  * Note: Block diagram documents are not updated since early design stages.

• Clock Card Dual-Configuration Technical Note  [PDF]  (SC2-ELE-S8xx-xxx) (Oct. 01, 2003) 
• FPGA Configuration Block Diagram  [PDF]  (SC2-ELE-S560-003) 
• Subrack Mounting Instructions  [doc]  (SC2-MEC-S580-504) 
• Cryostat Mounting Test Results  [PDF]

External Hardware and Accessories

Description	Block Diagram	Schematics	Revision
24V Power Supply and Power Distribution  [PDF]	[PDF]	[ ]	Obsolete
24V Vicor-based Power Supply	-	[PDF]	-
AC-DC Converter Unit and Power Distribution [doc]       S588-103-101 Rectifier Board        S588-104-101 Controller Board        S588-105-101 Wiring	-	[PDF] [PDF] [PDF]	A A A
Synchronizer Box  [PDF]*  (S589)    Rack-mount AC-in Enclosure:              Internal Wiring (S589-102)              Cable Wiring (S589-103)     DC-in Enclosure:              Internal Wiring (C589-102)	[PDF ] [PDF ]	[PDF] [PDF] [PDF] [PDF]	A2
SDSU PCI Interface Board (San Diego State University)	-	[PDF]	5A
Extender Card  [PDF*]  (SC2-ELE-S565-008-003)	-	[PDF]	-
Instrument Bus Tester [PDF]	-	[PDF]	C
2-slot Backplnae	-	[PDF] [PDF]	A B

Firmware Documentation  

MCE Communication Protocols

• MCE Communication Protocols [PDF]
• Fibre Protocol between RTL PC and MCE  [xls]
• Bus Backplane Protocol  [doc]
• Communication Protocol between Clock Card and Power-Supply Controller [PDF]
• Data Rate Estimate  [xls]

MAS (MCE Acquisition Software)

• SCUBA-2 Data-Acquisition Software Overview - Part 2 Protocols  [sc2-sof-s200-014-v4.pdf]  (Nov. 04, 2005) (ATC)
• MCE Command Description [PDF]  (SC2-ELE-S580-515) 
• MCE File Formats: [Rev. 2] [Rev. 3.3]  (For MAS file formats check the Wiki)
• Sample auto-tune plots:  
• biasing_ac_sq2fb_switching
• biasing_ac_not_switching

IB Tester Scripts

• IB Tester User's Manual [PDF]
• IB Tester Labview Scripts [script1 script2]
• IB Tester Templates [zip]

Application Notes

• Characterization and Locking SQUIDs with Multi-Channel Electronics [PDF]  (Jun. 07, 2005) 
• "Functional Description of Read-out Electronics for Time-Domain Multiplexed Bolometers for Millimeter and Sub-millimeter Astronomy" [PDF] (vol. 151, no. 3-4, J. Low-Temp Phys, May 2008)
• "Automated SQUID tuning procedure for kilo-pixel arrays of TES bolometers on the Atacama Cosmology Telescope" [PDF] (SPIE Astronomical Instrumentation Conf, Jun. 2008)
• Tuning Algorithm for ACT SQUIDs - poster [PDF]
• Monitoring MCE Status [doc](Nov. 9, 2006)

Design Analysis 

• Monitoring Voltages/Currents of PSU [xls]
• Main Concerns for the MCE  [PDF]  (Oct. 02, 2003)
• Address Card DAC Bus Scheme  [PDF]
• Analysis of Digital Filters for the Readout Card  [PDF]
• Data Rates for the SCUBA2 Arrays  [PDF]
• Fiber Optics Interface Analysis  [PDF]
• FPGA Asynchronous Communication  [PDF]
• Readout Card Pre-Amplifier settling time tests  [PDF]
• Bias Card Heater and Bolometer Driver Output Noise [PDF]
• Analysis of Readout Card Amplifier Voltage and Current Noise  [PDF]
• Timing Jitter in SCUBA2 Array Readout  [PDF]
• Timing  and Response to Data-Valid Pulses [PDF]

System

• MCE Grounding Diagram  [PDF]  (SC2-ELE-S580-102)
• Data Rates for the SCUBA2 Arrays  [PDF]
• Is MCE Rad tolerant? [doc]

Design Reference Documents

• SCUBA-2 Servo loop Analysis [PDF](SC2-SOF-S200-049)(ATC)
• A calculation of required noise and current swings on the SCUBA-2 MUX wafer leads.  [PDF]  (NIST) 
• SCUBA-2 Digitisation Scheme   [PDF]  (SC2-ANA-S100-041) (ATC)
• SCUBA-2 Architectural Design  [PDF]  (SC2-ANA-S100-045) (ATC)
• SCUBA-2 Data Acquisition to Data Processing Interface  [PDF]  (SC2-SOF-S200-008) (ATC)
• SCUBA-2 and JCMT Secondary Mirror  [PDF]  (SC2-ANA-S100-039) (ATC)
• Time-division SQUID multiplexer for Transition Edge Sensors.  [PDF]  (NIST)
• A Prototype System for SQUID Multiplexing of Large Format Transition Edge Sensor Arrays.  [PDF]  (NIST)
• Bias conditions of dc SQUIDs for a Time Domain SQUID Multiplexer.  [PDF]  (NIST)