Roger Henderson
0b571688a9
add Correlated Double Sampling (CDS) support
...
Implements CDS to reduce noise by taking multiple measurements at
different source PLL phase offsets and combining with cosine weighting.
Firmware changes (VNA.cpp, Protocol.hpp):
- Add cdsPhases field to SweepSettings (0=disabled, 2-7=phase count)
- Configure N internal sweep points per user point with phase offsets
- Accumulate weighted samples: result = Σ(sample[k] × cos(2π×k/N))
- Per-stage accumulators for multi-stage measurements
PC application changes:
- Add "CDS" checkbox to VNA acquisition toolbar
- When enabled, sets cdsPhases=2 for 180° differential measurement
- Tooltip explains the feature
With 180° CDS (2 samples):
- Sample at 0°: weight = cos(0°) = 1
- Sample at 180°: weight = cos(180°) = -1
- Combined result = Sample₀ - Sample₁₈₀
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-31 23:47:02 +13:00
Jan Käberich
bf028e2d21
add SCPI API for dwell time
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2026-01-27 18:24:05 +01:00
Jan Käberich
5cb28b0122
revert unnecessary debug output
2026-01-27 18:23:51 +01:00
Jan Käberich
4a8b713b91
zero out Protocol::PacketInfo on creation
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2026-01-20 13:44:37 +01:00
Jan Käberich
5ce342d2db
prevent crash in packet log view with invalid values
2026-01-20 13:11:08 +01:00
Jan Käberich
6b4bf83320
make DEV:INF:TEMP? command hardware version specific
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2025-12-16 15:18:58 +01:00
Jan Käberich
068770a76e
support reference settings for hardware version 0xD0
2025-12-11 19:19:26 +01:00
Jan Käberich
fda9ff96c2
bugfix: capture by reference
2025-12-09 13:43:21 +01:00
Jan Käberich
42aca8ff8d
only set idle when mode is active
2025-12-09 12:26:45 +01:00
Jan Käberich
c95694582d
prevent copying/moving of SCPINode objects
2025-12-09 11:50:56 +01:00
Jan Käberich
6a7b985fa9
Refactor Calkit::fromFile without the need for move semantics
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2025-12-02 16:52:34 +01:00
Jan Käberich
7bdbcde9be
SCPI API for editing calibration kit standards
2025-12-02 15:29:47 +01:00
Jan Käberich
fbef4b364f
fix ambiguous conversion error
2025-12-02 13:50:21 +01:00
Jan Käberich
da1228c9b1
Document and fix deembedding SCPI API
2025-12-02 13:43:21 +01:00
Jan Käberich
3aac724298
prevent the combination of log sweep and start frequency = 0
2025-12-02 11:36:36 +01:00
Jan Käberich
0f9510e7a0
save number of averages in setup files
2025-12-02 11:30:16 +01:00
Jan Käberich
65bc247a65
SCPI API for querying the sweep cursor
2025-12-02 11:22:54 +01:00
Jan Käberich
d0c8a1ae8e
SCPI API for setting/reading calkit meta data
2025-12-02 11:05:51 +01:00
Jan Käberich
9923038d6c
allow spaces in arguments of SCPI commands
2025-12-02 10:33:04 +01:00
Jan Käberich
72d547eb08
SCPI: support lower case for calkit file names
2025-12-02 10:08:06 +01:00
Jan Käberich
d853571aea
move to dedicated driver
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2025-11-17 16:38:02 +01:00
Jan Käberich
64791e6d4e
option to restore default values of device configuration
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2025-11-15 19:22:15 +01:00
Jan Käberich
b6718c57b2
Improve marker handling when at the edge of a graph
2025-11-15 19:03:41 +01:00
alexey.lysiuk
56dbec82d4
Add image saving to SVG format
...
This allows to create images independent from screen resolution
Replaced copy-pasted screenshot code with the single implementation
2025-11-12 15:14:37 +02:00
Jan Käberich
bbd1bce0b8
accept enter key along with return key when setting values
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2025-11-05 10:41:56 +01:00
Jan Käberich
937b002dfb
Minor UI improvememts
...
- Add space between number and unit
- Increase width of toolbar items to (hopefully) be fully visible for
all operating systems and themes
- Adjust order of automatically created calibration measurements to
match LibreCAL
- Disable edit triggers for calibration measurement table
- Show timestamps of calibration measurements in local time
- Allow starting calibration measurements by double clicking row
2025-11-05 09:19:02 +01:00
Jan Käberich
d77215aecb
initialize new plots with the correct span
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2025-10-31 15:42:42 +01:00
Jan Käberich
92088ec646
Enable auto mode comobobox when auto range is active for X axis
2025-10-31 14:26:19 +01:00
Jan Käberich
be123420db
Configuration for hardware version 0xD0
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2025-10-28 12:08:13 +01:00
Jan Käberich
273dfa8037
add support for hardware version 0xD0 device status
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2025-10-24 12:55:09 +02:00
Jan Käberich
6e2079fcfb
menu entry to run internal alignment if supported by hardware version
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2025-10-23 12:57:49 +02:00
Jan Käberich
ed699cfd6a
hide device specific actions based on the hardware version
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2025-10-23 10:16:33 +02:00
Jan Käberich
f51c6a0bce
Manual control dialog for prototype 0xD0
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2025-10-15 10:23:08 +02:00
Jan Käberich
5d00d4786b
new calibration type without receiver matching for lossy calibration standards
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2025-09-22 16:58:49 +02:00
Jan Käberich
3e327e7e6b
option to use already existing measurements for calibration
2025-09-22 16:01:38 +02:00
Jan Käberich
b2fd49d800
increase resolution for referenced data in 0xE0 manual control dialog
2025-09-17 10:47:27 +02:00
Jan Käberich
f327a4b4a0
allow firmware updates for version 0xE0
2025-09-17 10:46:44 +02:00
Jan Käberich
5947584e63
manual control dialog for experimental hardware version 0xE0
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2025-08-31 18:49:38 +02:00
Jan Käberich
3071d8de72
Set new markers to middle of trace by default
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2025-08-28 07:59:58 +02:00
Jan Käberich
d882bca547
rework editor creation for MarkerTraceDelegate
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2025-08-22 11:47:48 +02:00
Jan Käberich
66d5bdd91b
Add calibrated parameters table
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2025-08-15 21:07:34 +02:00
Jan Käberich
10ba138104
Allow manual calibration of incomplete trace sets
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2025-08-10 17:48:18 +02:00
Jan Käberich
2f018e3867
New calibration type: OSL
2025-08-10 17:17:53 +02:00
Jan Käberich
68e8d29e0c
Calibration error term model view
2025-08-10 15:13:24 +02:00
Jan Käberich
8f689637ff
Marker display and handling improvements
...
- prevent interaction with invisible markers on graph
- helper markers get their own (reduced) context menu
- only update required columns in table when marker data changes
- persistent helper markers for peak table
- New format for peak table markers
2025-07-24 10:32:55 +02:00
Jan Käberich
2f256117db
add unit tests for lin/log calibration detection
2025-07-19 13:38:49 +02:00
Jan Käberich
8e917faed4
add support for logarithmically spaced calibration points
2025-07-18 19:18:28 +02:00
Jan Käberich
b3eb1735cc
option to prevent electronic calibrations while LibreCAL temperature unstable
2025-06-24 08:50:43 +02:00
Jan Käberich
3330cee2ba
remember last used load/save paths in preferences
2025-06-23 16:39:18 +02:00
Jan Käberich
d8f042dcaa
remember touchstone export settings
2025-06-23 16:08:06 +02:00
