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Relevant Functional Block Diagram
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Software Actions
Action | Notes | ||
|---|---|---|---|
| 1 | Read light intensity valueSingle measurement. | That is, report the Wattage value the detector is currently reporting. Note calibration unit translation stage has to move detector into beam first.Value | |
| 2 | Calculate average of ‘n' discrete single measurements taken ’t' seconds apart. | Average several single measurements together to smooth out measurement noise/detector variability. This value reported as telemetry (see below) | 2. This approach was used for measurements at SSL using a similar device; see example Python code at bottom of this page. |
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Required Adjustable Settings
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Setting | When Needed | Notes | ||
|---|---|---|---|---|
Build | Observing | Maintenance | ||
Number of measurements 'n' to include in average. | YES | NO | MAYBE | Perhaps start with 10 |
Time delay 't' between measurements used for average. | YES | NO | MAYBE | Perhaps start with 0.5 seconds. |
Device setup parameters follow: | ||||
Set offset subtraction | YES | NO | MAYBE | Equivalent to “ZERO” button on device. Default should be ‘Z0’ (no offset subtraction). |
Set calibration wavelength | YES | NO | MAYBE | Equivalent to wavelength buttons on device. Default value should be 658 nm. Remote command might be 'W0658'. |
Set attenuator mode | YES | NO | MAYBE | “ATTN” button on device. Default should be set to ‘off’ (i.e. no attenuator in place). Remote command is ‘A0’ |
Set measurement units | YES | NO | MAYBE | Equivalent to “UNITS” button on device. Default should be Watts (remote command ‘U1'). |
Set averaging mode | YES | NO | MAYBE | Equivalent to “AVG” button on device. Default should be set to ‘Fast’ mode (no averaging by device). Remote command for ‘Fast’ mode is ‘F3’. |
Set audible beep on/off | YES | NO | MAYBE | Equivalent to “BEEP” button on device. Default should be ‘off’ (remote command ‘B0’) |
Set automatic range | YES | NO | MAYBE | Equivalent to “AUTO” range on device. Default should be auto-range (remote command R0‘R0’). |
Turn display on/off | YES | NO | MAYBE | Default should be ‘off’ (remote command ‘K0’). Likely device produces less heat (and isn’t a light source) with the display off. |
Local lockoutDefault | YES | NO | MAYBE | I presume default should be ‘locked’ while under remote operation (remote command ‘L1’) |
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Parameter | Threshold | Notes | |
|---|---|---|---|
| 1 | Calibration source Source 1 intensity low | TBD | |
| 2 | Calibration Source 2 intensity low | TBD | |
| 3 | Calibration Source 3 intensity low | TBD | |
| 4 | Calibration Source 4 intensity low | TBD | |
| 5 | Calibration Source 5 intensity low | TBD | |
| 6 | Calibration Source 6 intensity low | TBD | |
| 7 | Calibration Source 7 intensity low | TBD | |
| 8 | Calibration Source 8 intensity low | TBD |
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Relevant Datasheets & Manuals
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