Ampt - ADInstruments DSA2016 User Manual

gain more information about the signal.

3.1.3 AMPT

Set the amplitude parameters of the analyzer. Through modifying these parameters, signals
under measurement can be displayed in a proper mode for easier obsercation and minimum
error.
Ref Level
Set the maximum power or voltage can be currently displayed in the window and the value is
displayed at the upper left corner of the screen grid. Key Points:
• The maximum reference level available is affected by the maximum mixing level, input
attenuation and preamplifier. When you adjust it, the input attenuation is adjusted under a
constant maximum mixing level in order to fulfill the following inequality:
+ £
L a a
-
Ref PA
RF
a a
L
, , PA
RF
and
Ref
and the maximum mixing level respectively.
• You can modify this parameter using the numeric keys, knob or direction keys. For more
details, please refer to "Parameter Setting".
Reference level
Parameter
Default
Range
Unit
Knob Step
Direction Key Step
Input Atten
Set the front attenuator of the RF input in order to ensure big signals (or small signals) to pass
from the mixer with low distortion (or low noise).
Key Points:
• When the preamplifier is On, the input attenuation could be set up to 30 dB. You can adjust
the reference level to ensure that the specified parameter meets the inequality
- + £
a a
RF PA
• You can modify this parameter using the numeric keys, knob or direction keys. For more
details, please refer to "Parameter Setting".
Input attenuation
Parameter
Default
Range
Unit
Knob Step
L
mix
L
denote the reference level, the input attenuation, the preamplifier
mix
Explanation
20 dBm
-100 dBm to 30 dBm
dBm, -dBm, mV, uV
in Log scale mode, step = Scale/10 in Lin scale mode,
step = 0.1 dBm
in Log scale mode, step = Scale in Lin scale mode, step =
1 dBm
L
.
mix
Explanation
40 dB
0 dB to 30 dB
dB
1 dB
L
Ref