11 APD Measurement
Auto Couple
Auto Couple
The Auto Couple feature provides a quick and convenient way to automatically couple multiple instrument
settings. This helps ensure accurate measurements and optimum dynamic range. When the Auto Couple
feature is activated, either from the front panel or remotely, all parameters of the current measurement
that have an Auto/Manual mode are set to Auto mode and all measurement settings dependent on (or
coupled to) the Auto/Man parameters are automatically adjusted for optimal performance.
However, the Auto Couple keyactions are confined to the current measurement only. It does not affect
other measurements in the mode, and it does not affect markers, marker functions, or trace or display
attributes.
See "More Information" on page 908
Key Path
Front-panel key
Remote Command
:COUPle ALL|NONE
Example :COUP ALL
Notes :COUPle ALL puts all Auto/Man parameters in Auto mode (equivalent to pressing the Auto Couple
key).
:COUPLE NONE puts all Auto/Man parameters in manual mode. It decouples all the coupled
instrument parameters and is not recommended for making measurements.
Initial S/W Revision Prior to A.02.00
More Information
There are two types of functions that have Auto/Manual modes.
Auto/Man Active Function keys
An Auto/Man toggle key controls the binary state associated with an instrument parameter by toggling
between Auto (where the parameter is automatically coupled to the other parameters it is dependent
upon) and Man (where the parameter is controlled independent of the other parameters), as well as
making the parameter the active function. The current mode is indicated on the softkey with either Auto or
Man underlined as illustrated below.
Auto/Man 1-of-N keys
An Auto/Man 1-of-N key allows you to manually pick from a list of parameter values, or place the function
in Auto, in which case the value is automatically selected (and indicated) as shown below. If in Auto, Auto is
underlined on the calling key. If in manual operation, manual is indicated on the calling key. But the calling
key does not actually toggle the function, it simply opens the menu.
908 EMI Receiver Mode Reference
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