Table of Contents:
Page Status
Date | Initials | Change |
|---|---|---|
June 23, 2021 | SG | Engineering modes updated, and device set up parameters (and mode settings) spreadsheet now included. |
Relevant Devices
Description | Qty | Source | Part Number | IP Address Link |
|---|---|---|---|---|
Green CCD Cold Head | 1 | Instec | mK2000 | |
Red CCD Cold Head | 1 | Instec | mK2000 | |
Green LN2 Pump | 1 | Instec | LN2-SYS | N/A |
Red LN2 Pump | 1 | Instec | LN2-SYS | N/A |
Relevant Functional Block Diagram
Software Actions
Action | Notes | |
|---|---|---|
| 1 | Read telemetry (Green) | Continuously running |
| 2 | Read telemetry (Red) | |
| 3 | Operational Mode: Cold (Green) | Operational mode of CCD temperature maintained at cold temperature set point. |
| 4 | Operational Mode: Cold (Red) | |
| 5 | Engineering Mode: Warm (Idle) (Green) | Engineering mode for idle case of warm CCD under no temperature control. |
| 6 | Engineering Mode: Warm (Idle) (Red) | |
| 7 | Engineering Mode: Cool Down (Green) | Engineering and maintenance only. Controlled ramp of cold head temperature from warm to cold. |
| 8 | Engineering Mode: Cool Down (Red) | |
| 9 | Engineering Mode: Warm Up (Green) | Engineering and maintenance only. Controlled ramp of cold head temperature from cold to warm. |
| 10 | Engineering Mode: Warm Up (Red) | |
| 11 | Engineering Mode: Set PID (Green) | Engineering and maintenance only. Uploads a PID parameter table to the device. |
| 12 | Engineering Mode: Set PID (Red) |
Operational Modes
Link to Instec tab within KPF Operational and Engineering Modes Spreadsheet
Required Adjustable Settings
Setting | When Needed | Notes | ||
|---|---|---|---|---|
Green Channel Instec | ||||
Build | Observing | Maintenance | ||
Green PID Parameters | YES | NO | MAYBE | Instec app can save PID parameters to a .csv file. Likely convenient to use same format. Used with this command: TEMP:SPID Verified with this command: TEMP:GPID |
Green Heating/cooling status | YES | NO | MAYBE | Values: 0=Heating Only, 1=Heating and Cooling, 2=Cooling Only Change between different modes with TEMP:CHSW command. |
Green Cold Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. Used for the following commands: TEMP:HOLD TEMP:RAMP |
Green Warm Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. Used for the following commands: TEMP:HOLD TEMP:RAMP |
Green Cool-down Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute. Note this value is positive-only and the mK2000 infers the direction based on current and desired temperature. Used for the RAMP command: TEMP:RAMP |
Green Warm-up Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute Note this value is positive-only and the mK2000 infers the direction based on current and desired temperature. Used for the RAMP command: TEMP:RAMP |
Green Power Percentage Value | YES | NO | MAYBE | Power setting in percent. NOTE: the power percentage value on the Instec screen is in percent. However, power values passed through software are ratios. i.e., to set power to 5% the command would be: TEMP:RPP 0.05 and a following query TEMP:POW? would return 0.050. Screen would say 5%. Suggest using ‘units’ of percent for this variable to match display screen; and have software convert it to a ratio behind the scenes for commanding the Instec. |
Red Channel Instec | ||||
Build | Observing | Maintenance | ||
Red PID Parameters | YES | NO | MAYBE | See notes above for Green counterpart. |
Red Heating/cooling status | YES | NO | MAYBE | See notes above for Green counterpart. |
Red Cold Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. See notes above for Green counterpart. |
Red Warm Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. See notes above for Green counterpart. |
Red Cool-down Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute. See notes above for Green counterpart. |
Red Warm-up Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute See notes above for Green counterpart. |
Red Power Percentage Value | YES | NO | MAYBE | Power setting in percent. See notes above for Green counterpart. |
Device Set-up Parameters
Annotated command list with KPF settings. Covers device start-up and also settings for the various modes.
Required Telemetry
Parameter | Report Frequency | Purpose | Notes | |
|---|---|---|---|---|
| 1 | Green Channel Instec | |||
| 2 | Device Serial Number? | At startup | Include in log just in case device is swapped out in future | *IDN? (third field of reply) |
| 3 | Device Rev Number | At startup | Include in log just in case device is swapped out in future | *IDN? (fourth field of reply) |
| 4 | Cold Head Temperature Value | 1 Hz TBC | Monitor CCD temperature | TEMP:CTEM? |
| 5 | Heating/cooling enabled status | On change? TBC | Current mode; outputs are: 0=Heating only, 1=Heating&Cooling; 2=Cooling only. | TEMP:CHSW? |
| 6 | System status | On change? TBC | Current status; outputs are: 0=Stop, 1=Hold Run, 2=Ramp Run, 3=Pause, 4=Profile Run, 5=PP Run, 6=Purge | TEMP:STAT? |
| 7 | Temperature set point | On change? TBC | Temperature in deg C. | TEMP:SPO? |
| 8 | Power value | 1 Hz TBC | Power value | TEMP:POW? |
| 9 | Rate value | On change? TBC | Rate value (for ramp mode) | TEMP:RAT? |
| 10 | Red Channel Instec | |||
| 11 | Device Serial Number? | At startup | Include in log just in case device is swapped out in future | *IDN? (third field of reply) |
| 12 | Device Rev Number | At startup | Include in log just in case device is swapped out in future | *IDN? (fourth field of reply) |
| 13 | Cold Head Temperature Value | 1 Hz TBC | Monitor CCD temperature | TEMP:CTEM? |
| 14 | Heating/cooling enabled status | On change? TBC | Current mode; outputs are: 0=Heating only, 1=Heating&Cooling; 2=Cooling only. | TEMP:CHSW? |
| 15 | System status | On change? TBC | Current status; outputs are: 0=Stop, 1=Hold Run, 2=Ramp Run, 3=Pause, 4=Profile Run, 5=PP Run, 6=Purge | TEMP:STAT? |
| 16 | Temperature set point | On change? TBC | Temperature in deg C. | TEMP:SPO? |
| 17 | Power value | 1 Hz TBC | Power value | TEMP:POW? |
| 18 | Rate value | On change? TBC | Rate value (for ramp mode) | TEMP:RAT? |
Required Alarms
Parameter | Threshold | Notes | |
|---|---|---|---|
| 1 | Cold Head Temperature Value Low (Green) | TBC | |
| 2 | Cold Head Temperature Value High (Green) | TBC | |
| 3 | Cold Head Temperature Value Low (Red) | TBC | |
| 4 | Cold Head Temperature Value High (Red) | TBC |
Relevant Datasheets & Manuals
Description | File | Source | |
|---|---|---|---|
| 1 | mK2000 User Manual | email from Instec | |
| 2 | mK2000 Command Reference | email from Instec | |
| 3 | LN2-SYS Pump Manual | email from Instec |
Relevant Software
Description | File | Source | |
|---|---|---|---|
| 1 | Instec said: “While we do have sample code for Python, it is based on a USB connection, not Ethernet. Our documentation on Ethernet programming is limited because it isn’t very frequently used for custom applications. This ZIP file contains example code for python using a USB connection. It could serve as the basis for an ethernet version.” | email from Instec | |
| 2 | Ethernet communication setup from Instec. Mainly describes how to write code to find Instec devices on a network. Note PacketSender image within, which shows correct port to use for ethernet communication. | email from Instec | |
| 3 | PacketSender connection example |  | Screengrab of SG’s successful connection to device through PacketSender. Note port is 50292. |
| 4 | Instec App for Windows | email from Instec | |
| 5 | Steve’s python code that uploads a PID table from a .csv file (in Instec format) to the device over USB. Example PID tables also included (one with actual values, and one with integers that was useful for testing code). | Code: PID files: | Steve’s test of parsing and uploading Instec .csv file |
| 6 | Calibration table decoder ring |
| email from Instec |
| 7 | Calibration file example. Filename structure is: “cold_head_SN & mK2000B_SN cal.clb” |
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