DP44/enriched-partialglm/Common/DTS.Common.Serialization/DDAS (Chrysler).md

source_files, generated_at, model, schema_version, sha256

source_files	generated_at	model	schema_version	sha256
Common/DTS.Common.Serialization/DDAS (Chrysler)/ChannelDefinition.h Common/DTS.Common.Serialization/DDAS (Chrysler)/DDASTestDefinition.h Common/DTS.Common.Serialization/DDAS (Chrysler)/DataFloat.h Common/DTS.Common.Serialization/DDAS (Chrysler)/DDAS.File.cs Common/DTS.Common.Serialization/DDAS (Chrysler)/DDASTest.cs Common/DTS.Common.Serialization/DDAS (Chrysler)/DDAS.File.Writer.cs Common/DTS.Common.Serialization/DDAS (Chrysler)/TSVSettingsWindow.cs Common/DTS.Common.Serialization/DDAS (Chrysler)/TSVSettingsWindow.Designer.cs Common/DTS.Common.Serialization/DDAS (Chrysler)/DDASChannel.cs	2026-04-16T10:56:49.509276+00:00	zai-org/GLM-5-FP8	1	3efc64a6d144d6f5

DDAS Serialization Module Documentation

1. Purpose

This module provides serialization support for the DDAS (DaimlerChrysler Data Acquisition System) file format, enabling reading and writing of test configuration and channel data. It bridges legacy C++ data structures (CHANNEL, FILEINFOBLOCK, TESTINFO, etc.) with a modern C# serialization framework, supporting export of test data including channel metadata, transducer information, and floating-point sample data to the proprietary DDAS ".ddas" and ".fpd" file formats.

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2. Public Interface

C++ Structures (ChannelDefinition.h)

CHANNEL / PCHANNEL / PCHAN - Channel definition structure:

Field	Type	Description
Size	short	Size of this object
Flags	short	Channel flags
Name	char[64]	Channel name
Sign	char[8]	Sign (+, -, or blank)
Axis	char[8]	Axis (X,Y,Z,FX,MX,AX,...)
FilterFreq	float	Channel filter class (Hz)
SetGain	float	Gain setting (1-n)
ActGain	float	Actual (measured) gain
Rcal	float	Shunt calibration resistance
Excitation	float	Excitation voltage (programmable)
byteSpares	byte[4]	Spare bytes (was CalDate)
Transducer	TRANSDUCER	Snapshot of transducer values

Channel Macros:

• ISCHANACTIVE(pChan) - Returns 1 if channel active flag is set
• SETCHANACTIVE(pChan) - Sets channel active flag
• CLRCHANACTIVE(pChan) - Clears channel active flag

Enumerations:

• ChannelFlags { CHANFLAG_ACTIVE }

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C++ Structures (DDASTestDefinition.h)

FILEINFOBLOCK - File metadata:

Field	Type	Description
Size	UINT	Block size including Size
FileTypeName	char[12]	Software type name
FileTypeVers	char[12]	File version name
FileTypeFlags	UINT	Hardware type (upper 16 bits), File type (lower 16 bits)
CreatedByName	char[16]	Creator T-number
UpdatedByName	char[16]	Updater T-number

DATASYSTEMBLOCK - Data system configuration:

Field	Type	Description
Size	UINT	Block size
NumberOfSystems	UINT	Number of systems
ChannelsPerSystem	UINT	Channels per system
MaxSampleRate	UINT	Max/default sample rate
SizeOfConfig	UINT	Size of DDASCONFIGBLOCK

DDASCONFIGBLOCK - Per-system configuration:

Field	Type	Description
Size	UINT	Block size
AnalogUnitNo	short	DDAS analog unit number
AnalogOptions	short	Analog unit options
MemoryUnitNo	short	DDAS memory unit number
MemoryOptions	short	Memory unit options
MemorySize	long	Memory unit RAM (bytes)

ACQUISITIONBLOCK - Acquisition parameters:

Field	Type	Description
nSize	long	Block size
nRecordMode	long	Record mode (RECORDMODE_EVENT or RECORDMODE_TAPE)
SampleRate	long	Samples per second
TotalSamples	long	Total samples in record
PreEventSamples	long	Pre-event samples (Event mode only)
TapeModeChannels	long	Number of channels (Tape mode only)
nTrigBlock	long	Number of trigger entries

TRIGCHANDEF - Trigger channel definition:

Field	Type	Description
ChanNo	BYTE	Channel number for trigger
LevelPct	BYTE	Trigger level % full scale (0=off)

TRIGCHANBLOCK - Trigger channel block:

Field	Type	Description
SizeBlock	unsigned short	Block size in bytes
NumTrigs	unsigned short	Number of trigger entries
TrigChan	TRIGCHANDEF[MAXTRIGCHANS]	Channel trigger array

Enumerations:

• FileTypeFlags { FILETYPE_IMPORTED4X }
• HardwareType { HWTYPE_UNKNOWN, HWTYPE_DDAS3, HWTYPE_KAYSERTHREDE, HWTYPE_COUNT }
• AnalogOptionFlags { ANAOPT_CHANTRIGGERS }
• MemoryOptionFlags { MEMOPT_TAPEMODE, MEMOPT_PREEVENT, MEMOPT_PREEVENTXXX }
• RecordModes { RECORDMODE_EVENT, RECORDMODE_TAPE }

Constants:

• MAXTRIGCHANS = 4
• TRIGCHANDSBL = 0x80
• TESTDEFEXT = ".tdf"
• DDASTYPENAME = "DDAS V5"
• DDASFILEVERS = "Ver 500"

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C++ Structures (DataFloat.h)

TESTINFO - Test information:

Field	Type	Description
Size	unsigned long	Block size
DeviceID	unsigned long	DAQ device ID
ChannelNo	long	Channel number (1-32)
SampleRate	`long