Service manual

3-12 8510XF Network Analyzer Systems
Operation
Choosing Calibration Standards
Banded Standards Some of the calibration standards in the 1.0 mm calibration kit are limited to
a particular frequency band. Calibration standards that are limited in this
way are shown in Table 3-1 below. During the calibration process, be sure to
use all the standards that are needed to cover the frequency range in which
you will be making measurements. Refer to the 85059A calibration kit
manual for more information.
Table 3-1 Banded Standards
∀
Non-Banded
Standards
Other standards in the 1.0 mm calibration kit, which are not limited to a
particular frequency range, are shown in Table 3-2 below. The right column
of the table refers to some devices that were also listed in Table 3-1; here
they are used differently. For example, Short No. 3 was limited to 50 GHz as
a “Shorts” standard, but not when it is used as a “Response” standard.
Table 3-2 Calibration Standards Used at All Frequencies
∀
Standard Type .045 to 50 GHz 50 to 75 GHz 75 to 110 GHz Combined Ranges
“Open/Short” (M) OPEN
(F) OPEN
(M) SHORT3
(F) SHORT3
(M) SHORT3
(F) SHORT3
(combine the standards
shown in the columns to
the left, as appropriate)
“Shorts” (M) SHORT3
(F) SHORT3
(M) SHORT1
(F) SHORT1
(M) SHORT1
(F) SHORT1
(combine the standards
shown in the columns to
the left, as appropriate)
“Load/Short” 50GHZ LOAD (M) SHORT4
(F) SHORT4
(M) SHORT2
(F) SHORT2
(combine the standards
shown in the columns to
the left, as appropriate)
“Match” (TRL/TRM
Calibration)
50GHZ LOAD
(both ports)
N/A N/A (TRM calibration is not
used above 50 GHz)
“Isolation” 50 GHz LOAD Load BB
1
1. The broadband load is a combination of a lossy delay line plus a 50 GHz load (refer to the 85059A calibration kit manual).
Load BB
1
Load BB
1
Standard Types Device or Connection
“Response” (for S11 or S22) Choose one of the following:
• (M) SHORT3 or (F) SHORT3
• (M) OPEN or (F) OPEN
“Response” (for S21 or S12) • THRU (connect Port 1 to Port 2 via cable)
“S11REFLECT SHORT” (TRL menu) Connect a short to Port 1:
(M) SHORT3 or (F) SHORT3
“S22REFLECT SHORT” (TRL menu) Connect a short to Port 2:
(M) SHORT3 or (F) SHORT3
“THRU” (various menus) Connect Port 1 to Port 2 via cable