User manual

User’s Guide for DSA800 Series
Chapter 2 Front Panel Operation RIGOL
2-111
2． Line Mode
Enter line mode. In line mode, in order to avoid fault operation, all the keys
except the following are disabled.
 Menu softkeys: select the desired preset type.
 Esc: exit line mode.
3． UserKey Setting
Define a relative function for UserKey at the front panel (the defining
method is as described below). After that, pressing UserKey under any
operation interface can quickly enable the pre-defined function.
 Press UserKey Set and select “On”;
 Open the desired function menu, such as: System  Self Test  Key
Test;
 Press UserKey and the definition is finished, then UserKey Set turns
off automatically.
Coupl Param
Set all the related parameters automatically according to the coupling relationship.
Definitions of the auto coupling parameters:
1. CF Step
This parameter maintains a coupling relationship with the RBW (or span) in
zero span (or non-zero span) mode. Refer to “CF Step” for more details.
2. Reference level
The reference level, input attenuation, preamplifier and maximum mixing
level maintain coupling relationships. Refer to the introduction of equation
(2-3) in “Ref Level” for more details.
3. Input Attenuation
The input attenuation, reference level, preamplifier and maximum mixing
level maintain coupling relationships. Refer to the introduction of equation
(2-3) in “Ref Level” for more details.