R&S LCX Series User Manual

Measurement setups
R&S
®
LCX Series
58User Manual 1179.2260.02 ─ 02
For details on the setting parameters, see Chapter 8, "Instrument functions",
on page 67.
The following sections provide additional information to be considered for the specific
measurements.
Depending on a bias required for your measurement, see Chapter 6.3, "Configuring
BIAS", on page 59 on how to proceed.
Considerations for test signal configuration
●
Dependency of the selected impedance range and the low impedance mea-
surement setting
The impedance range depends on various settings, e..g., the range selection and
the setting of the "LowZ" state.
The following overview explains the corresponding setting (in quotes) for the impe-
dance in the expected range:
LowZ Mode > ON
– ≤10 Ω
"3 Ω": measures values from 0 Ω to ≈3 Ω
– >10 Ω
"10 Ω": measures all values but with limited accuracy
"30 Ω": measures values from 30 Ω up to infinity
LowZ Mode > OFF
– ≤100 Ω
"3 Ω": measures values from 0 Ω to ≈3 Ω
– >100 Ω
"100 Ω": measures all values but with limited accuracy
"300 Ω": measures values from 300 Ω up to infinity
To achieve best measurement results for the expected sample component, select
the range as close to these limits as possible.
Examples for LowZ Mode > OFF, based on the range settings 3 Ω, 10 Ω, 30 Ω,
100 Ω, 300 Ω, 1 kΩ, 3 kΩ, ...:
– 1.2 Ω DUT > select 3 Ω range
– 3.1 Ω DUT > select 10 Ω range
– 150 Ω DUT > select 100 Ω range
– 310 Ω DUT > select 300 Ω range
Auto range
The auto range function selects the range that fits best automatically.
Currently we recommend that you execute measurements with automatic range
selection only in "SLOW" measurement speed mode. This limitation will be fixed in
future releases.
●
Dependency of the mains frequency and the test signal frequency for high
impedances
Measuring high impedances with a signal frequency of ≈100 Hz or 120 Hz lead to
inaccurate readings as the mains frequency with usually 50 Hz / 60 Hz interferes
the test signal frequency.
Configuring the test signal

R&S LCX Series Specifications

General

Brand	R&S
Model	LCX Series
Category	Measuring Instruments
Language	English