Hardkey and Softkey Reference ESG Family Signal Generators
Ampl
4-16 User’s Guide
Ampl Offset
Sets a value for amplitude offset. An amplitude offset changes the value
shown in the amplitude area of the display but does not affect the
output power. For example, if the current output power is 0 dBm and
you enter an amplitude offset of
−
3 dBm, the output power will remain
at 0 dBm but the display will show an amplitude of
−
3 dBm. This
feature lets you simulates the power level at a test point beyond the RF
OUTPUT connector.
An amplitude offset can be entered at any time during normal
operation and also when you are operating in amplitude reference
mode. To enter an offset, press
Ampl Offset and enter the desired offset
value using the up and down arrow keys, the front panel knob, or enter
a value using the numeric keypad and press the
dB terminator softkey.
When a non-zero offset has been entered, the
OFFSET indicator is turned
on in the amplitude area of the display.
Default Value: 0.00 dB
Softkey Location:
Ampl > Ampl Offset
Ampl Ref Set
This softkey sets the current output power as an amplitude reference
value. It also causes the
Ampl Ref Off On softkey to toggle to the On
position, turning on amplitude reference mode. All amplitude
parameters are then set as relative to the reference value.
Default Value: 0.0 dBm
Softkey Location:
Ampl > Ampl Ref Set
Ampl Ref Off On
This softkey toggles the amplitude reference mode on and off. When
amplitude reference mode is turned on, the amplitude value displayed
is equal to the current hardware output power minus the reference
value set by the
Ampl Ref Set softkey. (The Ampl Ref Set softkey sets the
reference value equal to the current output power. If you have not yet
set the reference value, the normal preset value for amplitude reference
is 0 dBm.) The
REF indicator is turned on in the amplitude area of the
display. All amplitude parameters will now be set as relative to the
reference value.
Amplitude offsets can be used with amplitude reference mode. In this
situation, the display will show the amplitude calculated as the current
hardware output power minus the reference value plus the amplitude
offset.
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