What does IDE (UDMA mode 3) represent?

IDE (UDMA mode 3) is an Ultra DMA transfer mode for legacy Parallel ATA interfaces providing a theoretical maximum transfer rate of about 44.4 MB/s with minimal CPU intervention.

What is STM-4 (signal) used for?

STM-4 (signal) is a synchronous transport module in the Synchronous Digital Hierarchy used in optical networks at a nominal rate of 622.08 Mbit/s, commonly used for regional or inter-city backbone links.

Can I use this converter for direct device communication?

No, this conversion is primarily for comparative and planning purposes since IDE (UDMA mode 3) and STM-4 involve different physical signaling technologies.

How to Convert from IDE (UDMA mode 3) to STM-4 (signal)?

Convert data transfer rates from IDE (UDMA mode 3), a legacy PATA/IDE interface mode, to STM-4 (signal), an optical transmission standard in SDH networks, using our easy-to-use online converter.

IDE (UDMA mode 3)

STM-4 (signal)

Please check your input. It must be a valid numeric value.

IDE (UDMA mode 3) to STM-4 (signal) Conversion Table

IDE (UDMA mode 3)	STM-4 (signal)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

IDE (UDMA mode 3) to STM-4 (signal) Conversion Table
IDE (UDMA mode 3)	STM-4 (signal)

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What Is This Tool?

This converter allows you to translate data transfer rates from IDE (UDMA mode 3), a legacy Ultra DMA mode for Parallel ATA interfaces, to STM-4 (signal), a high-speed optical transmission module used in Synchronous Digital Hierarchy systems. It helps compare legacy storage throughput with modern telecom-grade transmission rates.

How to Use This Tool?

Enter the value in IDE (UDMA mode 3) units you want to convert
Select STM-4 (signal) as the target unit
Click the convert button to see the equivalent transfer rate

Key Features

Converts transfer rates between IDE (UDMA mode 3) and STM-4 (signal) units
Browser-based and easy-to-use interface for quick calculations
Supports comparisons between legacy storage modes and optical network rates

Examples

1 IDE (UDMA mode 3) equals approximately 0.643 STM-4 (signal)
5 IDE (UDMA mode 3) equals approximately 3.215 STM-4 (signal)

Common Use Cases

Comparing legacy PATA/IDE hard drive transfer speeds with telecom optical data rates
Planning data aggregation in telecom networks involving SDH infrastructure
Interpreting and benchmarking legacy storage throughput relative to modern network capacities

Tips & Best Practices

Use this conversion for planning and comparative analysis rather than direct device interoperability
Consider environmental and protocol factors as they can affect actual throughput
Verify unit selections carefully to ensure accurate conversions

Limitations

Conversion is theoretical and based on nominal transfer rates, not reflecting overhead or errors
IDE (UDMA mode 3) does not directly correspond to STM-4 physical signaling
Intended for comparative and planning purposes, not for direct compatibility

Frequently Asked Questions

What does IDE (UDMA mode 3) represent?: IDE (UDMA mode 3) is an Ultra DMA transfer mode for legacy Parallel ATA interfaces providing a theoretical maximum transfer rate of about 44.4 MB/s with minimal CPU intervention.
What is STM-4 (signal) used for?: STM-4 (signal) is a synchronous transport module in the Synchronous Digital Hierarchy used in optical networks at a nominal rate of 622.08 Mbit/s, commonly used for regional or inter-city backbone links.
Can I use this converter for direct device communication?: No, this conversion is primarily for comparative and planning purposes since IDE (UDMA mode 3) and STM-4 involve different physical signaling technologies.

Key Terminology

IDE (UDMA mode 3): A legacy Ultra DMA transfer mode for Parallel ATA interfaces with a theoretical max raw transfer rate around 44.4 MB/s.
STM-4 (signal): Synchronous Transport Module level-4 in SDH, an optical transmission frame with a nominal rate of 622.08 Mbit/s used for multiplexing digital traffic.
Synchronous Digital Hierarchy (SDH): A standardized multiplexing protocol used to transfer multiple digital bit streams over optical fiber networks.

Quick Knowledge Check

What type of interface is IDE (UDMA mode 3)?

Optical transmission module

Legacy Parallel ATA interface mode

Wireless communication standard

What is the nominal line rate of STM-4 (signal)?

44.4 MB/s

622.08 Mbit/s

1 Gbit/s

Why is this conversion mainly used?

For direct signaling compatibility

For comparative and planning analysis

For wireless data transfer

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