HP 4284A - Page 185

Correction Functions
The HP 4284A has p owerful correction functions, Cable Length
correction, and OPEN, SHORT, and LOAD corrections. These
correction functions are used to correct additional error due to
the test xture and the test leads. Table 6-2 lists the Correction
functions with a brief description.
Table 6-2. Correction Functions
Correction
Selection
Description Typical Usage
Cable Length
Correction
Correct phase shift
error due to the 1 or
2 m test Leads.
 Measurements using the
HP 16048A/D
OPEN
Correction
Correct for stray
admittance due to
the test xture.
 High imp edance measurements
SHORT
Correction
Correct for residual
imp edance due to
test xture.
 Low imp edance measurements
OPEN/
SHORT
Correction
Correct the stray
admittance and
residual imp edance
due to the test
xture.
 Precise measurements
OPEN/
SHORT/
LOAD
Correction
Correct any error
due to the test
xture and test leads
by using the
standard.


Measurements to b e referenced to
a standard
Measurements using a test xture
that has complicated imp edance
characteristics
For example, the HP 4284A
combined with the scanner.
6-16 Measurement Procedure and Examples