Test Procedures R&S SMU200A
1007.9845.82 1.56
E-12
Offset voltage
Test equipment AC/DC Voltmeter R&S URE 3 (table 1-1, pos. 19).
Test setup
Connect the multimeter to the I and I Bar (Q and Q Bar)-output of t
he
DU
T
.
Test method The I and I Bar (or Q and Q Bar) voltage are measured for different offset
values. The differential offset is obtained from the differences between I
and I Bar (or Q and Q Bar) at a particular offset.
Measurement Settings on DUT
I/Q Out Menu:
Output Type: Differential
Mode: Variable
I/Q I Level EMF: 1 V
Couple I/Q Bias: On
I Bias EMF: 0 V
I (or Q) Offset EMF: measurement offset
Settings on multimeter
COUPLING
DC
Measurement Check offset : -300, -150, -30, -10, -3, -1, 0, +0.1, 30, 150
and 300
mV
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