5Key Reference
138 N9342C/43C/44C User’s Guide
Minimum Hold
Key access: [TRACE] > {Min Hold}
Maintains the minimum level for each trace point 
of the selected trace, and updates each trace point 
if a new minimum level is detected in successive 
sweeps.
View
Key access: [TRACE] > {View}
Holds and displays the amplitude data of the 
selected trace. The trace register is not updated as 
the analyzer sweeps. If a trace is deactivated by 
pressing  Blank, the stored trace data can be 
retrieved by pressing View.
Blank
Key access: [TRACE] > {Blank}
Stores the amplitude data for the selected trace 
and removes it from the display. The selected trace 
register will not be updated as the analyzer 
sweeps. This function is activated for traces 2, 3 
and 4 at power- on and Factory Preset.
Detector
Key access: [TRACE] > {More} > {Detector} 
Selects a specific detector type, or allows the 
system to auto select the appropriate detector for a 
measurement.
For every trace point displayed, there is a finite 
time during which the data for that point is 
collected. The analyzer has the ability to look at all 
NOTE
Changing the vertical scale (Amplitude, Scale Type, Log or 
Line), or pressing PRESET, or turning averaging on (TRACE, 
Average (On) or switching widow in Zone Span restarts the 
held trace.