(Read-Write) Set and query: the reference channel detector settings (AUTO | NORM | POS | NEG | SAMP | AVER). There are two Detector controls available, one for the Reference Channel (default: Auto is Averaged to facilitate the Power Integration), and another for all the Offset segments (default Auto is PEAK, to facilitate finding PEAK signal energy when comparing against Limits). There is only one Trace available, and like the other Channel Measurements, the default Trace Average behavior is gated with an ENABLE found on the overall Meas Setup menu. The detector selection is analogous to standard detector, except the AUTO selection maps to AVERAGE for the Ref Chan Detector and PEAK for the Offset Detector.See also SEM:OFFS<n>:ODETector and [:SENSe]:CMEasurement:AVERage:ENABle. |
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Relevant Modes |
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Parameters |
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<character> |
Failure mask. Choose from: AUTO (Auto-Average) - Auto-Average (Default) to facilitate better power integration. Auto displays the most appropriate detection method based on other settings. NORM - sets the detector normal. Normal provides a better visual display of random noise than Positive peak and avoids the missed-signal problem of the SampleMode. Should the signal both rise and fall within the bucket interval, then the algorithm classifies the signal as noise. An odd-numbered data point displays the maximum value encountered during its bucket. An even-numbered data point displays the minimum value encountered during its bucket. If the signal is NOT classified as noise (does NOT rise and fall) then Normal is equivalent to Positive Peak POS - sets the detector to Positive peak. Displays the maximum value of all the measurements in each bucket. This setting ensures that no signal is missed. However, it is not a good representation of the random noise in each bucket. NEG - sets the detector to Negative peak. Displays the minimum value of all the measurements in each bucket. SAMP - sets the detector to Sample. Sample displays the center measurement of all the measurements in each bucket. This setting gives a good representation of the random noise in each bucket. However, it does not ensure that all signals are represented. AVER - sets the detector Average. This displays the Root Mean Squared (RMS) average power of all the measurements in each bucket. This is the preferred method when making power measurements. |
Examples |
SEM:CDET NORM 'sets segment 5 to use a normal detector type SEM:CDET NEG 'sets segment 3 to use a negative peak detector type |
Query Syntax |
SEM:OFFS6:CDET? 'queries the detector type for segment 6 |
Return Type |
Character |
Default |
POS |
Last Modified:
| 01dec2019 | New command |