Agilent Technologies 8711C Service Manual page 137

Table 5-3. Analyzer Correction Constant Storage Arrays
Array escription
Number
0 One-port Directivity
1 One-port Source Match
2 One-port Tracking
3 B mplitude Response
(narrowband)
4 B/R mplitude Response
(narrowband)
5 - 32 LC Corrections for the 7
attenuator steps, 0 through
6, and assorted D C values.
33 B* mplitude Linearization
(broadband)
34 R* mplitude Linearization
35 B* Frequency Response
36 R* Frequency Response
y
37 M Delay Insertion Loss
38 B* Diode Slope
39 R* Diode Slope
y
Only used for analyzers with Option 1D or 1DB.
5-8 Serv ce Related Menus
Typical
Correction
10 dB (HP 8713C/14C)
0
5 dB
(HP 8711C/12C/30 )
0
14 dB
5 dB variation
5 dB variation
5 dB variation
See Comments
See Comments
See Comments
0
0 3 dB
0.5 to 2.5 dB
See Comments
See Comments
Comments
This data is related to the raw
directivity of the re ection port coupler
(but does not equal it).
This represents the source match of the
re ection port.
This is related to the frequency
response of the (re ection port) input.
This is related to the frequency response
of the transmission port input (B input).
This is related to the frequency response
of the transmission port input (B input).
These curves all represent the power
correction tables generated mostly by
adjustment #104. For each the seven
di erent attenuator settings, four
di erent LC settings are measured for
atness. From this, the LC correction
table is generated. Since each trace only
has about 20 points, it may appear
slightly discontinuous; this is normal.
For units without an internal attenuator,
the correction should be at for any
attenuation value other than zero.
Higher LC values represent higher
power levels.
This is the correction curve for the
absolute B* power measurement. It
represents voltage (Y-axis) out vs.
power in. It is normal for the last few
horizontal divisions to be a at line.
s above, but for the R* diode.
Not implemented. lways a at line
at 0.
Represents the frequency response of
the R* diode. downward spike at the
beginning of the trace is normal.
Represents the increased insertion loss
of the M delay modulator when in the
ON position. n upward spike at the
beginning of the trace is normal.
typical trace will be at for the rst
and last few divisions. This trace
represents the change in slope of
power-in vs. voltage out. The slope is
constant (zero) for both the log and
linear portions of the diode curve. Only
the transitional area will show
something other than a at line.
s above but for the R* diode.