:CALibrate:DARK:CHANnel:STATus?
Query Syntax
:CALibrate:DARK:CHANnel{1:8}{A|B|C|D}:STATus?
Where the required specifier {1:8}{A|B|C|D} identifies a channel by its module slot number and channel letter. For example, channel 3C (CHANnel3C).
The channel specifier will fail if it does not include a slot number. If instead the suffix's channel letter is missing, the command defaults to letter A. As a result, the best practice is to always explicitly specify the channel by including both the module slot number and channel letter.
Description
Queries the dark calibration status of an optical channel. The targeted optical channels is identified in the command string (for example, :CHAN2A) and not module slot as with the other :STATus? commands. A dark calibration is usually performed on an optical channel, but it can also be performed on an electrical channel in the case where an external photodetector is used. One of the following response strings is returned:
- "CALIBRATED"
- The module does not require a calibration.
- "UNCALIBRATED"
- The module requires a calibration.
Use the child queries listed in the following table to return details about the current calibration.
| Status String | Child Query to Send |
|---|---|
| Time of last calibration, Time change since last calibration, and Ttemperature change since last calibration |
:DETails?
|
| Change in temperature | :TEMPerature?
|
| Change in Time | :TIME?
|
Example Command
:CALibrate:DARK:CHANnel2A:STATus?