Receiver Mode
R&S
®
ESRP
158
User Manual 1175.7445.02 ─ 08
An attenuation of 0 dB cannot be set manually either. This avoids 0 dB being switched
on inadvertently, particularly when DUTs with high RFI voltage are measured.
Remote command:
INPut:ATTenuation:PROTection[:STATe]
Auto Range (On Off)
Turns automatic configuration of the attenuation level on and off.
If off, the R&S
ESRP uses the manual RF attenuation that you have defined.
If on, the R&S
ESRP defines an attenuation level that results in a good S/N ration with-
out overloading the receiver stages. Note that it is possible that the R&S
ESRP does
not utilize the maximum possible dynamic range. However, measurement results are
still valid in that case, because it is ensured that performing scans does not result in an
overload.
NOTICE!
Risk of damage to the input mixer. If you apply a 0
dB RF attenuation in com-
bination with auto ranging, make sure that the signal level at the RF input does not
exceed the allowed limits.
Exceeding the limit might damage the input mixer.
Do not use a 0 dB attenuation under any circumstances when you measure RFI volt-
age (or unknown signals) in combination with an artificial network, because such a test
setup generates very high pulses during phase switching.
Remote command:
Auto Preamp (On Off)
Turns automatic selection of the preamplifier state on and off.
If on, the R&S
ESRP considers the preamplifier in the autorange process.The pream-
plifier is cut in when the RF attenuation is reduced to the minimum settable value.
If off, the preamplifier is not considered in the autorange procedure.
Remote command:
Unit
Selects the unit displayed on the vertical axis.
The unit on the vertical axis represents the unit the results are evaluated in. You can
select one of the following units: dBm, dBµV, dBpW, dBµA, dBmV, dBpT.
Remote command:
dBx/MHz ← Unit
Turns the display of results in units relative to a 1
MHz bandwidth on and off.
You can normalize the following units to 1
MHz.
Common Measurement Settings
