Instructions

RIGOL Chapter 2 Functions of the Front Panel of GPSA
2-10 RSA3000E User Guide
Table 2-7 Reference Level
Parameter
Remarks
Default
0 dBm
Range
-170 dBm to 30 dBm
Unit
dBm, -dBm, V, mV, uV
Knob Step
In Log scale mode, step = scale/10
In Lin scale mode, step = 0.1 dBm
Left/Right Arrow Key Step
Up/Down Arrow Key Step
In Log scale mode, step = scale
In Lin scale mode, step = 1 dBm
Attenuation
Sets the RF front-end attenuator to allow high-level signals to pass through the mixer
with low distortion, and low-level signals to pass through the mixer with low noise.
Remarks:
 The attenuator consists of fixed attenuator and variable attenuator. The
attenuation of the fixed attenuator is 20 dB, and the attenuation range of the
variable attenuator is from 0 dB to 30 dB. Therefore, the input attenuation
ranges from 0 dB to 50 dB.
 When the set attenuation amount is greater than 20 dB, fixed attenuator is
preferred to be used by default.
 When the maximum mixer level and reference level are confirmed, the minimum
of the input attenuation should meet the following equation:
mixOffsetExtPARefmin
LLaaLATT −−++=
(2-3)
Wherein,
min
ATT
,
Ref
L
,
PA
a
,
Ext
a
,
Offset
L
, and
mix
L
indicate the minimum
input attenuation, reference level, PA, external gain, reference level offset, and
maximum mixer level, respectively.
 You can use the numeric keys, the knob, and the arrow keys on the front panel
to modify this parameter; also you can modify it on the touchscreen. For details,
refer to descriptions in "Parameter Setting".
Table 2-8 Input Attenuation
Parameter
Remarks
Default
10 dB
Range
0 dB to 50 dB
Unit
dB
Knob Step
Preamp off, step = 1 dB
Left/Right Arrow Key Step
Up/Down Arrow Key Step
5 dB