Operating Manual EMI TEST RECEIVER ESIB7 - Rohde & Schwarz

Level Display/RF Input - Analyzer
ESIB
ATTEN AUTO
NORMAL
The ATTEN AUTO NORMAL softkey sets the RF attenuation automatically as
a function of the selected reference level.
IEC/IEEE-bus commands
:INPut:ATTenuation:AUTO:MODE NORMal
:INPut:ATTenuation:AUTO ON
ATTEN AUTO
LOW NOISE
The ATTEN AUTO LOW NOISE softkey sets the RF attenuation always 10dB
lower than in the RF ATTEN AUTO mode. Therefore, for 10 dB RF
attenuation, the maximum reference level is -10 dBm. For reference levels
which are lower, at least 10 dB is always set (see above).
Setting Low Noise means that the indicated inherent noise level is low. This
setting is recommended if signals with a low level have to be measured as
the highest S/N ratio is then obtained.
IEC/IEEE-bus commands
:INPut:ATTenuation:AUTO:MODE LNOise
:INPut:ATTenuation:AUTO ON
ATTEN AUTO
LOW DIST
The ATTEN AUTO LOW DIST softkey sets the RF attenuation 10 dB higher
than in RF ATT AUTO mode. This means that for 10 dB RF attenuation, the
maximum reference level is -30 dBm (-40 dBm at the mixer).
This setting is recommended whenever a small signal is to be measured in
the presence of larger signals. Here, the intermodulation-free range of the
ESIB is large and the internal distortion products are minimised.
IEC/IEEE-bus commands
:INPut:ATTenuation:AUTO:MODE LDIStortion
:INPut:ATTenuation:AUTO ON
MIXER
LEVEL
The MIXER LEVEL softkey activates the entry of the maximum mixer level
attainable for a given reference level. At the same time it enables softkeys
ATTEN AUTO LOW NOISE and ATTEN AUTO LOW DIST .
Range of input values is -10 to -100 dBm
IEC/IEEE-bus command :INPut:MIXer -30DBM
1088.7531.12 4.172 E-15