Atec Agilent-8720D - Manual (Page 2)

2
This data sheet provides two types of performance
information:
• System Specifications
• Supplemental Characteristics
System specifications describe the instrument’s war-
ranted performance over the temperature range of
23 °C ± 3 °C (except where noted).
Supplemental characteristics describe the instrument’s
non-warranted performance parameters.
System dynamic range
These specifications apply to transmission meas-
urements in the full frequency range at 10 Hz IF
BW with response and isolation correction or full
two-port calibration. Dynamic range is limited by
maximum receiver input level and the receiver’s
noise floor.
Measurement uncertainty
Curves show the worst-case magnitude and
phase uncertainty for reflection and transmission
measurements, after calibration. Calibration is the
process of measuring known standards from a cali-
bration kit to characterize a network analyzer’s
systematic (repeatable) errors.
Reflection measurement uncertainty is plotted as a
function of S
11
(reflection coefficient). Based on a
one-port calibration, using specified calibration kit,
with 10 Hz IF bandwidth and no averaging.
Assumes a one-port device (S
21
=S
12
=0).
Transmission measurement uncertainty is plotted
as a function of S
21
(transmission gain/loss, in dB
from reference level). Assumes a well-matched
device (S
11
=S
22
=0). Based on a full two-port Short-
Open-Load-Thru calibration (including isolation
with averaging factor of 8), using specified calibra-
tion kit, with 10 Hz IF bandwidth and no averaging.
Measurement port characteristics
The characteristics indicate performance after
error-correction (full two-port calibration). The
performance accuracy is determined by the quality
of calibration standards and how well “known”
they are, plus system repeatability, stability, and
noise. Crosstalk is not shown, since isolation cali-
bration will reduce crosstalk to the noise floor.
Definitions and Test Conditions