Legend for Front Panel View R&S SMC100A
1411.4077.62 1.4 E-1
4 Keypad for data entry
Keys for data entry
The unit keys can either select a unit and thus
determine the absolute value, or change the unit.
Their function depends on the time at which they
are pressed during parameter entry:
Selecting the unit
If a unit key is pressed immediately after a numeric
value has been entered, it terminates the entry and
determines the multiplication factor for the
respective basic unit (e.g. the k/m key determines
the unit kHz after frequency entry).
If a level value is entered, the unit indicated on the
unit key is used (e.g. the k/m mV key determines
the unit mV for level entry). The level entry must be
activated, e.g. by pressing the
LEVEL key.
See chapter 3, section
"Selecting a Unit -
Setting Parameters"
Changing the unit
If a numeric entry is terminated with the rotary knob
and not with a unit key, the unit displayed in the unit
field of the parameter in the menu is assigned. If the
unit key is pressed later, the unit is changed but not
the value. The value is recalculated to suit the new
unit (e.g. the display changes from 1000 to 1 when
the Hz is changed to kHz). The new unit is then
indicated in the value field of the menu.
Assignment
G/n dBµV giga/nano, dBµV for RF levels,
dBu for LF levels
M/µ µV mega/micro, µV for levels
k/m mV kilo/milli, mV for levels
ENTER dB(m) basic unit
dBm for levels
dB for level offset and level step
width
function as ENTER key for unit-
free values
See chapter 3, section
"Selecting a Unit -
Setting Parameters"
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