TECHNICAL REPORT NO The Sutherland Temperature Controllers. Ian Barnes. The University of Birmingham, Edgbaston, Birmingham B15 2TT

Transcription

1 ËÇÆ Birmingham Solar-Oscillations Network TECHNICAL REPORT NO. The Sutherland Temperature Controllers Ian Barnes The University of Birmingham, Edgbaston, Birmingham B TT 00 January This technical report series is published by: Ë Ä High-Resolution Optical-Spectroscopy Group School of Physics and Astronomy The University of Birmingham Edgbaston, Birmingham B TT, United Kingdom Telephone: +--- FAX: +---

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3 The Sutherland Temperature Controllers Ian Barnes The University of Birmingham, Edgbaston, Birmingham B TT 00 January Abstract Some technical information on the configuration of the Sutherland Temperature Controllers is presented. Contents Introduction Unit Design PCB Configuration Internal Wiring System Design External Connections & Cable Assemblies Mechanical Drawings Introduction The Sutherland Temperature Controllers [] were installed in 00 August []. Originally this unit had four separate channels but since the decision was taken to temperature control the oven bottom then one of the later five channel units was needed. Therefore the unit that was originally installed in Sutherland has been replaced with a new five channel unit and this report details the exact configuration of the unit.

4 Unit Design Like many other HiROS units the Temperature controller has been designed to be a self-contained unit. The Temperature controller is housed in a U case and contains its own power supplies. As so many other HiROS units all of the connections to the Temperature Controller feed to the rear panel of the unit with all of the controls and indicators being present on the front panel.. The Front Panel The front panel of the Temperature Controller contains the main power switch, and various LEDs that indicate the status of the unit to the user. Figure shows the Temperature Controller front panel. Figure : The Temperature Controller Front Panel. Directly underneath the power switch are three LEDs that show that the analogue or clean power rails are active. Next to these LEDs are another set of three LEDs that show that the digital or dirty rails are operational. On the far right of the front panel there is a group of four LEDs that show the status of the RS- lines. The left hand pair indicate the status of the TX line and the RX line is the remaining two LEDs.. The Rear Panel The rear panel of the Temperature Controller is shown in Figure. Figure : The Temperature Controller Rear Panel At the far right of the rear panel is the inlet for the mains power. Underneath the ac inlet is the -pin D-type connector that connects to the serial port of the computer. Next to this are two banks of five -pin D-Type connectors. The bottom row of connectors is all the temperature sensor feeds from the various spectrometer components that are to be

5 temperature controlled by the units. The five connectors on the top row are the high-current feeds to the heater/cooling elements for each spectrometer component. On the far left of the rear panel is the case fan which is needed to dissipate the excess heat that is generated within the Temperature Controller unit itself.. Internal Layout Figure shows how the main components are arranged to fit inside the case. Figure : The Internal Layout of the Temperature Controller Unit.. Parts List The parts list for the Sutherland Temperature Controller is too large to fit in a single table. Hence it has been split into several smaller tables according to component type. These tables are summarized in Table. A spare parts kit is also supplied. Table : Sutherland Temperature Controller Case Parts Lists Component Type Table Page Case PCB Sub Assemblies Spare Parts Kit

6 Name Part Number Table : Parts List Case Description (SSM) RS - Rack Case U HP mm SW Rapid -0 DPST Green Visirocker Switch CN Rapid -0 IEC Inlet Filter A CN Rapid -0 -pin Female D-Type Connector CN CN CN CN Rapid -00 Rapid pin Female D-Type Connector -pin Male D-Type Connector TR Rapid -0 Toroidal Transformer +V 0.A TR Rapid - Toroidal Transformer +V.A TB FEC -0 Terminal Block -Way Connector FAN Rapid -00 0mm -V Box Fan Rapid -0 0mm Fan Finger Guard RS -00 IEC Inlet Insulating Boot () FEC - Heatshrink Boot mm Rapid -0 D-type mm Female Screwlock Kit Rapid - M Hexagonal Spacers pk Rapid -0 M Panhead Pozidriv Screw pk00 Rapid -0 M Pozidriv Countersunk Screw pk00 Rapid -00 M. Pozidriv Panhead Screw pk00 Rapid - M Nuts pk00 Rapid - M Washer pk00 Rapid - M 0 Pozidriv Panhead Screw pk00 Rapid - M Pozidriv Panhead Screw pk00 These items are available from Physics Stores.

7 Name PCB PCB PCB PCB PCB PCB Table : Parts List PCB Sub Assemblies Part Number HiROS TC-MAIN- HiROS TC-DRIVE- HiROS TC-DRIVE- HiROS PWR-LED- HiROS -LED- Description (SSM) Main Board PCB Assembly Drive Board PCB Assembly Drive Board B PCB Assembly Power-LED Board PCB Assembly RS-LED Board PCB Assembly Part Number Rapid -0 FEC - RS - FEC 0- Rapid -0 Rapid -00 Rapid -0 Rapid -0 Rapid - Rapid - Rapid - Rapid - Rapid -00 RS -0 Rapid -00 Rapid -0 Table : Parts List Spare Parts Kit Description (SSM) PICF-0P Microcontroller ADS0 -bit ADC MAXACPE Quad -bit DAC INA Instrumentation Amplifier MAXCPE RS- Line Driver IC TL0 Quad Op-amp IC ZVN0A n-channel MOSFET ZVP0A p-channel MOSFET L0 +-V 00-mA Voltage Regulator L +-V 00-mA Voltage Regulator L0 --V 00-mA Voltage Regulator L --V 00-mA Voltage Regulator LMDZ Temperature Sensor IC TLECLP Voltage Reference 0.-A Resettable Fuse -A Resettable Fuse

8 PCB Configuration The Temperature Controller [] is a generic device that can be configured in many different ways depending on the actual components that are present. The Fred spectrometer as fitted in Sutherland has the following components that require temperature control: Port Detector. Starboard Detector. Oven Top. Interference Filter. Oven Bottom.. Output Channel Allocation The Sutherland Temperature Controller requires two of the drive boards to enable it to control the temperatures of components within Fred and the ancillary outputs that are needed by the temperature controller itself. Table shows how the components have been allocated to the available output channels on the Sutherland Temperature Controller. Table : Channel Allocation of the Sutherland Temperature Controller Component Drive Output Board Channel Port Detector A A Case Fan A B Oven Top A C Heatsink Fan A D Interference Filter (IF) B A Oven Bottom B B Starboard Detector B C Heatsink Fan B D. Output Configuration Figure shows a generic version of the output stage of the temperature controller. The drawing contains a number of components that are changed to enable the unit to control different types of component.

9 DAC O/P (0-V) +V DAC LKa LKb IN+ IN- Ra SOT Rb SOT Ux Rx 0k Ry 0k LM FERRITE BEADS R Rz W WIRE WOUND LKx Jx LKy OUTPUT MAIN BOARD DRIVE BOARD -V DIRTY Figure : Temperature Controller Output Stage. There are components on both the main board and on the drive board that are changed depending on the component that they are driving. LKa and LKb on the main board set the reference voltage which determines unipolar or bipolar current range. The majority of components that can be configured are on the Drive board. Ra and Rb are the gain resistors and they set the overall gain of the amplifier. Then there is the output links LKx and LKz. LKy is used in bipolar mode while LKx is used in unipolar mode. Table shows the values of the components as used on the Sutherland Temperature Controller. The gain resistors column shows the names used on the drive board for the components on the output in question. For the output link this shows which link to populate with a zero-ohm link on the drive board. The reference link shows which link to populate on the main board. Table : Configuration of the Drive boards Component Drive Output Gain Value Output Reference Board Channel Resistors Link Link Port A A R R -kω LK LK Case Fan A B R R 0-kΩ LK LK Oven Top A C R R -kω LK LK Heatsink Fan A D R0 R 0-kΩ LK LK IF B A R R -kω LK LK Oven Bottom B B R R -kω LK LK Starboard B C R R -kω LK LK0 Heatsink Fan B D R0 R 0-kΩ LK LK. PCB Configuration Parts The parts to complete the PCB configuration of the Temperature Controller have been split up into separate tables. These tables are summarized in Table.

10 Table : PCB Configuration Parts Lists Drawing Figure Page Drive Board A SOT Components Drive Board B SOT Components Main Board SOT Components 0 Table : PCB Configuration Parts List Drive Board A SOT Components Name Part Number Description (SSM) R R Rapid -0 -kω 0.W % MR Resistor pk00 R R Rapid -0 0-kΩ 0.W % MR Resistor pk00 R R Rapid -0 -kω 0.W % MR Resistor pk00 LK, LK, LK, LK FEC -0 0-Ω Link MCF Series (0) These items are available from Physics Stores. Any links in the range of LK LK not in this list are depopulated. Table : PCB Configuration Parts List Drive Board B SOT Components Name Part Number Description (SSM) R R Rapid -0 -kω 0.W % MR Resistor pk00 R R Rapid -0 0-kΩ 0.W % MR Resistor pk00 LK LK, LK, LK FEC -0 0-Ω Link MCF Series (0) These items are available from Physics Stores. Any links in the range of LK LK not in this list are depopulated. Table 0: PCB Configuration Parts List Main Board SOT Components Name LK LK, LK LK, LK, LK, LK0 Part Number Description (SSM) FEC -0 0-Ω Link MCF Series (0) Any links in the ranges of LK LK and LK LK that are not in this list are depopulated.

11 Internal Wiring The Temperature Controller system is made up of several different PCBs and the layout within the case has already been shown in Figure. Most of the electronics for the Temperature controller are contained on the Main board. The unit does require eight high-current outputs and these are provided by the two drive boards, each board having four such outputs. Because the system contains different PCBs it means that there is a lot of interconnections that need to be made internally on the system wiring.. Internal Wiring Diagram Table summarizes the individual drawings that make up the internal wiring diagram for the Narrabri Temperature Controller. Table : Internal Wiring Diagram Common Connections Drawing Figure Page AC Power Supplies 0 DC Power Distribution RS- Communications Interface Spectrometer Components Drive Board A Spectrometer Components Drive Board B

12 CN 0VAC FILTER & FUSE E N L CN CN CN CN CN CN SW CN CN -Core Mains Cable (/0.) L TR +V AC Supply CN CN N Brown Red N L Secondary A Primary A /0. Black CN Grey Violet Yellow CN Blue Orange CN Main Board PCB J SEC-A SEC-B /0. Cable -Core (/0.) Mains Cable Case TR +V AC Supply Brown Red Secondary A Primary A /0. TB CN0 Grey CN Primary B Black Yellow Secondary B BLACK /0. /0. ORANGE /0. L Blue Orange N L N Primary B Secondary B BLACK /0. /0. ORANGE /0. Figure : The Wiring Diagram for the AC Power Supplies. CN J SEC-A SEC-B 0

13 Analogue (Clean) Power-LED Board Drive Board A PCB +V DGND -V J CN CN / -core A Mains Cable (/0.) J +V DGND -V +V-LED AGND -V-LED +V-LED DGND J0 CN BLACK -core (/0.) Cable CN0 J +V-LED AGND -V-LED +V-LED DGND PCB Main Board Drive Board B PCB +V DGND -V J CN CN / -core A Mains Cable (/0.) J +V DGND -V PCB VA+LED AGND VA-LED +V-LED DGND J CN BLACK -core (/0.) Cable CN Digital (Dirty) Power-LED Board J +V-LED AGND -V-LED +V-LED DGND PCB Figure : The DC Power Distribution.

14 Main Board PCB TXH TXL +V -0V RXH RXL J CN BLACK -core (/0.) cable CN J TXH TXL +V -0V RXH RXL PCB RS- LED Board GND TXIN RXIN CGND J CN -core (/0.) cable CN Case 0 RS- Comms 0 Figure : RS- Communications Interface.

15 PORT TEMPERATURE OVEN TOP TEMPERATURE CN -pin D-Type Male CN -pin D-Type Male -core (/0.) Cable -core (/0.) Cable CN CN0 J J CN CN -core (/0.) Cable CN CN BLACK VIOLET WHITE -core (/0.) Cable J J PWR+ AGND SIG+ A+ A- B+ B- C+ C- D+ D- J PWR+ AGND SIG+ PWR+ PWR- SIG+ SIG- J A+ A- B+ B- C+ C- AD0+ D+ AD0- D- Main Board PCB OUTA- OUTA+ OUTB- OUTB+ OUTC- OUTC+ Drive Board A PCB J J J CN /0. CN - + CN /0. BLACK /0. BLACK /0. CN0 PORT DRIVE -pin D-Type Female VDC 0.A FAN CASE FAN CN OVEN TOP DRIVE -pin D-Type Female Figure : Spectrometer Components Drive Board A.

16 Main Board PCB Drive Board B PCB STARBOARD TEMPERATURE CN CN -core (/0.) Cable J PWR+ AGND SIG+ J CN CN -core (/0.) Cable J PWR+ AGND SIG+ PWR+ PWR- SIG+ SIG- OUTC+ OUTC- J CN /0. BLACK /0. CN STARBOARD -pin D-Type Female -pin D-Type Male IF TEMPERATURE OVEN BOTTOM TEMPERATURE CN CN -core (/0.) Cable -pin D-Type Male CN -pin D-Type Male -core (/0.) Cable CN J PWR+ PWR- SIG+ SIG- J AD0+ AD0- A+ A- B+ B- C+ C- D+ D- J CN CN BLACK VIOLET WHITE -core (/0.) Cable J A+ A- B+ B- C+ C- D+ D- OUTA- OUTA+ OUTB- OUTB+ J J CN0 /0. BLACK /0. CN /0. BLACK /0. CN IF -pin D-Type Female CN OVEN BOTTOM -pin D-Type Female Figure : Spectrometer Components Drive Board B.

17 . Internal Wiring Parts The parts to complete the internal wiring of the Temperature Controller have been split up into separate tables for cables and connectors. The tables that make up the parts list for the internal wiring are summarized in Table. Table : Internal Wiring Parts Lists Drawing Figure Page Cables Connectors Part Number Rapid Rapid 0-0 Rapid 0-0 Rapid 0-00 Rapid 0-0 Rapid 0- Rapid 0-0 Rapid 0-00 FEC - Rapid 0-00 Table : Internal Wiring Parts List Cables Description (SSM) /0. Wire Black 00m Reel /0. Wire Red 00m Reel /0. Wire Orange 00m Reel /0. Wire Yellow 00m Reel /0. Wire Blue 00m Reel /0. Wire Green 00m Reel /0. Wire Brown 00m Reel -Core Screened Cable 00m Reel -Core Screened Cable 00m Reel These items are available from Physics Stores. -Core (/0.) A Mains Cable 00m Reel

18 Name CN CN CN CN CN CN CN0 CN Table : Internal Wiring Parts List Connectors Part Number Rapid -00 Rapid -00 Rapid - Rapid -00 Description (SSM) Red Insulated. 0. Female Terminal pk00 Red Uninsulated. 0. Female Terminal pk00 Red. mm Pin Terminal pk00 Red Uninsulated. 0. Female Terminal pk00 CN Rapid -00 Red Ring Terminal.mm pk00 CN Rapid -0 -Way 0. Crimp Housing CN CN CN0 CN CN CN CN CN CN0 CN CN CN CN CN Rapid -0 Rapid -00 Rapid -00 Rapid -0 Rapid -00 Rapid -00 Rapid -0 -Way 0. Crimp Housing -Way Molex KK Crimp Housing -Way Molex KK Crimp Housing -Way Molex KK Crimp Housing -Way Molex KK Crimp Housing -Way Molex KK Crimp Housing -Way Molex KK Crimp Housing Rapid -0 Molex KK Crimp Terminal pk000 Rapid - 0. Crimp Terminal pk000 These items are available from Physics Stores.

19 System Design Currently in Sutherland the spectrometer (Fred) is connected to two systems, namely the Sutherland Temperature Controllers [] and, the Sutherland Temperature Monitor []. Figure 0 shows all of the connections that are required for the Temperature Controller system.

20 TEMPERATURE CONTROLLERS Fred Wye Cable HiROS Signal Cable - 0m Yellow LM Wye Cable D-Type F CN D-Type M STARBOARD F SPECTROMETER D-Type F D-Type M D-Type F D-Type M D-Type F CN0 D-Type M PORT HiROS Signal Cable - 0m Yellow LM Wye Cable D-Type F CN D-Type M OVEN TOP D-Type M D-Type F D-Type F D-Type M D-Type F D-Type M Drive Wye Cable D-Type F D-Type M CN D-Type M CN D-Type F IF STARBOARD CN CN Drive Cable - m -core D-Type M D-Type F IF IEC To mains AC D-Type M D-Type F D-Type M D-Type F D-Type M D-Type M CN D-Type F CN D-Type F PORT OVEN TOP CN0 D-Type F To PC Serial Port Spectrometer Wye Cable HiROS Signal Cable - 0m Blue CN D-Type F D-Type M D-Type F D-Type M OVEN BOTTOM TEMP Oven Drive Cable - m -core CN D-Type M D-Type F D-Type M D-Type F D-Type M D-Type F OVEN BOTTOM DRIVE HiROS Signal Cable - 0m Blue CN D-Type F D-Type M D-Type F D-Type M BASEPLATE TEMP TEMPERATURE MONITOR Figure 0: The Sutherland Temperature Controller System.

21 External Connections & Cable Assemblies Figure 0 shows how all of the sensors are connected to the temperature monitor. There are basically seven different types of cable assemblies that are associated with the Sutherland Temperature Monitor, these are summarized in Table. Table : Sutherland Temperature Controller External Cable Assemblies Drawing Figure Page HiROS Signal Cable Drive Cable 0 Oven Bottom Drive Cable 0 LM Wye Cable 0 Drive Wye Cable Fred Wye Cable Spectrometer Wye Cable. HiROS Signal Cable The majority of signals have to travel from a remote sensor to some instrument. Because of this it was decided to adopt a standard cable that is used on any system that requires signals to travel over a considerable distance. The HiROS signal cable is this standard cable. It is basically a network cable that has D- Type connectors fitted on each end. The cable is made up of twisted pairs of /0. wires. The cables come in a variety of different lengths and several different outer sheath colours are available including yellow, blue and red. Figure shows how the cable is connected internally. -Pin D-Type Male /WHITE ORANGE ORANGE/WHITE /WHITE /WHITE /WHITE ORANGE ORANGE/WHITE /WHITE /WHITE Cat Network Cable -Pin D-Type Female Figure : The HiROS Signal Cable.. Drive Cable The drive cable is very similar to the HiROS signal cable. The only difference is the cable type and length that is used. The signals that are carried by the drive cable are power signals and so do not require twisted pair cable. Figure shows how the cable is connected internally.

22 PORT DRV+ PORT DRV- IF DRV+ IF DRV- STAR DRV+ STAR DRV- OVEN TOP DRV+ OVEN TOP DRV- -Pin D-Type Male BLACK ORANGE VIOLET SCREEN -core Cable m BLACK ORANGE VIOLET SCREEN -Pin D-Type Female PORT DRV+ PORT DRV- IF DRV+ IF DRV- STAR DRV+ STAR DRV- OVEN TOP DRV+ OVEN TOP DRV- Figure : The Drive Cable.. Oven Bottom Drive Cable The Oven Bottom Drive Cable is basically the same as the drive cable except that it only carries the power for the oven bottom heater. Figure shows how the cable is connected internally. OVEN BOTTOM DRV+ OVEN BOTTOM DRV- -core Cable m OVEN BOTTOM DRV+ OVEN BOTTOM DRV- -Pin D-Type Male -Pin D-Type Female Figure : The Oven Bottom Drive Cable.. LM Wye Cable The LM Wye cable is used to separate the signals from two LM temperature sensors that have been grouped together for transmission down a HiROS signal cable. Figure shows how the cable is connected internally. - /WHITE- ORANGE- ORANGE/WHITE- - /WHITE- ORANGE- ORANGE/WHITE- CAT NETWORK CABLE Branch - /WHITE- ORANGE- ORANGE/WHITE- -pin D-Type Female -pin D-Type Male Branch CAT NETWORK CABLE - /WHITE- ORANGE- ORANGE/WHITE- -pin D-Type Female Figure : The LM Wye Cable. 0

23 . Drive Wye Cable The Drive Wye cable is used to combine the four drive signals so that they can be transmitted to the spectrometer over a single twisted pair network cable Figure shows how the cable is connected internally. PORT DRV+ PORT DRV- -PIN MALE D-CONNECTOR PORT DRV+ PORT DRV- IF DRV+ IF DRV- STAR DRV+ STAR DRV- OVEN TOP DRV+ OVEN TOP DRV- -PIN FEMALE D-CONNECTOR -WIRE /0.-MM SHIELDED BLACK -WIRE /0.-MM SHIELDED BLACK -WIRE /0.-MM SHIELDED BLACK -WIRE /0.-MM SHIELDED BLACK -PIN MALE D-CONNECTOR IF DRV+ IF DRV- STAR DRV+ STAR DRV- -PIN MALE D-CONNECTOR OVEN TOP DRV+ OVEN TOP DRV- -PIN MALE D-CONNECTOR Figure : The Drive Wye Cable.. Fred Wye Cable The Fred Wye Cable is used to split the many signals from the spectrometer so that they can be transmitted via HiROS signal cables. Figure shows how the cable is connected internally.. Spectrometer Wye Cable The Spectrometer Wye Cable is used to split up the spectrometer baseplate temperature signal from the oven bottom signals as they go to two different units. Figure shows how the cable is connected internally.

24 CAT /WHITE OVEN TOP SIG+ OVEN TOP SIG- /WHITE /WHITE /WHITE IF PWR+ IF PWR- IF SIG+ IF SIG- IF GND IF SIG+ IF PWR+ IF DRV+ IF DRV- OVEN TOP SIG- OVEN TOP SIG+ OVEN TOP DRV+ OVEN TOP DRV- PORT GND PORT SIG+ PORT PWR+ PORT DRV+ PORT DRV- STAR GND STAR SIG+ STAR PWR+ STAR DRV+ STAR DRV PIN FEMALE D-CONNECTOR BLACK ORANGE VIOLET /WHITE /WHITE CAT ORNAGE/WHITE /WHITE ORANGE /WHITE /WHITE -WIRE /0.-MM BLACK SHIELDED /WHITE ORANGE ORANGE/WHITE /WHITE /WHITE BLACK ORANGE VIOLET -PIN FEMALE D-CONNECTOR -PIN FEMALE D-CONNECTOR -PIN MALE D-CONNECTOR STAR PWR+ STAR PWR- STAR SIG+ STAR SIG- PORT PWR+ PORT PWR- PORT SIG+ PORT SIG- PORT DRV+ PORT DRV- IF DRV+ IF DRV- STAR DRV+ STAR DRV- OVEN TOP DRV+ OVEN TOP DRV- Figure : The Fred Wye Cable.

25 -WIRE /0.-MM OVENBOT DRV+ OVENBOT DRV- -PIN MALE D-CONNECTOR OVENBOT DRV+ OVENBOT DRV- OVENBOT SIG+ OVENBOT SIG- SPEC PWR+ SPEC PWR- SPEC SIG+ SPEC SIG- 0 /WHITE /WHITE ORANGE ORANGE/WHITE CAT CAT /WHITE -PIN FEMALE D-CONNECTOR OVENBOT SIG+ OVENBOT SIG- -PIN FEMALE D-CONNECTOR CONNECTS TO BACK OF F /WHITE ORANGE ORANGE/WHITE SPEC PWR+ SPEC PWR- SPEC SIG+ SPEC SIG- -PIN FEMALE D-CONNECTOR Figure : The Spectrometer Wye Cable.. External Cable Assembly Parts Table : Parts List External Cable Assemblies Part Number Rapid -0 Rapid -0 Rapid -0 Rapid -00 Description (SSM) -pin Female D-Type Connector -Pin Female D-Type Connector -Pin Female D-Type Connector -Pin Female D-Type Connector RS -0 D-Type Connector Hood -Pin (0) RS -0 D-Type Connector Hood -Pin (0) RS - D-Type Connector Hood -Pin (0) Rapid - FEC -0 FEC -0 Yellow 0-meter Network Cable These items are available from Physics Stores. -Core (/0.) Screened Black Cable 00m Reel -Core (/0.) Screened Black Cable 00m Reel

26 Mechanical Drawings There are two mechanical drawings that are associated with the Sutherland V/F Power Box and these are summarized in Table. Table : Mechanical Drawings Drawing Figure Page Front Panel Rear Panel

27 Figure : The Front Panel of the Sutherland Temperature Controller.

28 Figure : The Rear Panel of the Sutherland Temperature Controller.

29 References [] Ian Barnes and Brek Miller. A computer-controlled temperature controller. BISON Technical Report Series, Number, High-Resolution Optical-Spectroscopy Group, Birmingham, United Kingdom, January 00. [] Ian Barnes. The installation of the Sutherland Temperature Controllers in 00 August. BISON Technical Report Series, Number, High-Resolution Optical-Spectroscopy Group, Birmingham, United Kingdom, January 00. [] Ian Barnes and Brek Miller. A computer-controlled temperature controller. BISON Technical Report Series, Number, High-Resolution Optical-Spectroscopy Group, Birmingham, United Kingdom, January 00. [] Brek A. Miller. Sutherland temperature controllers. BISON Technical Report Series, Number, High-Resolution Optical-Spectroscopy Group, Birmingham, United Kingdom, November 000. [] Ian Barnes. Temperature-monitor unit for Sutherland. BISON Technical Report Series, Number, High-Resolution Optical-Spectroscopy Group, Birmingham, United Kingdom, October 00.