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DET
Input Detector
The DET command selects the kind of spectrum analyzer input detection: normal, sample, positive peak, or
negative peak.
Normal (NRM) enables the Rosenfell detection algorithm that selectively chooses between positive and negative
peak values. The IP command (instrument preset) also activates normal detection.
Sample (SMP) displays the instantaneous signal value detected at the analog-to-digital converter output. Video
averaging and a noise-level marker, when active, also activate sample detection. (See MKNOISE, VAVG, or KSe.)
Positive peak detection (POS) displays the maximum signal value detected during the conversion period.
Negative peak detection (NEG) displays the minimum signal value detected during the conversion period. The
program line below selects the negative peak detection.
When queried (?), DET returns the detection type to the controller (NRM, SMP NEG, or POS) followed by
carriage-return/line-feed (ASCII codes 13, 10). The line feed asserts the end-or-identify state (EOI) .
7 0 P r o g r a m m i n g
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