Raw Offsets For The A And B Channels (Et Models) - Agilent Technologies 8719ET Service Manual

Adjustments and Correction Constants
Raw Offset Correction Constants
18.Press and enter the new value into the poke address; press
Poke
19.To get the analyzer to use the new poke value, press
20.Press the following:
INPUT PORTS
Meas
CW FREQ
Sweep Setup
SERVICE MENU
System
x1 MARKER SEARCH
The maximum marker reading is MMR.
21.Recalculate ∆ by taking the test port power (TPP), adding 4 and then subtracting the
maximum marker reading (MMR).
∆ = (TPP + 4) − (MMR)
If the magnitude of ∆ is less than 0.15 dB, then the offset for the B channel is correctly
set. Go to "Sampler Calibration Correction Constants (Test 51)" on page
magnitude is greater than 0.15 dB, repeat steps 12 through 21 until the B channel raw
offset correction constant is achieved.

Raw Offsets for the A and B Channels (ET Models)

1. Connect an open to the REFLECTION port.
2. Press the following:
Preset
Meas INPUT PORTS
Stop 10 G/n
System SERVICE MENU
SEARCH: MAX
Marker Search
Note the maximum frequency and write it down.
3. Press
Sweep Setup
Press
G/n Marker Search
(MMR) and write it down.
Press . Note the displayed test port power (TPP) and write it down.
Power
3-54
B
and enter the frequency from step 12.
SERVICE MODES
SEARCH:MAX
A
SERVICE MODES
, and enter the maximum frequency point from step 2.
CW FREQ
SEARCH: MAX
.
Preset
MORE SAMPLER COR OFF
MORE SAMPLER COR OFF
. Note the maximum marker reading
8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
.
x1
3-58. If the
Service Guide