Description
Heidenhain ST1278 383963-03
High-precision signal conversion for Heidenhain encoders ensuring seamless integration into CNC and motion control systems
| Brand | Heidenhain |
| Model | ST1278 383963-03 |
| Voltage | 24V DC |
| Country of Origin | Germany |
| Weight | 0.5 kg |
| Dimensions | 120x80x40 mm |
| Warranty | 6 months |
| Certifications | CE, UL, RoHS |
| SKU / MPN | 383963-03 |
| What’s in the box | Signal converter unit, mounting brackets, connector kit, user manual |
| Input Signal | Encoder (TTL/HTL) |
| Output Signal | 1 Vpp sin/cos |
| Frequency Range | 0-500 kHz |
| Resolution | Up to 14 bits |
| Operating Temperature | -10 to +60 °C |
| Protection Class | IP40 |
Key benefits: Accurate signal conversion, compact design, easy installation, robust industrial performance, supports multiple encoder types
Typical applications: CNC machines, robotic arms, precision positioning systems, automated assembly lines
Lifecycle: Active product, long-term availability with support
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitive pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
Run Business
Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.






Andrew C. –
Good price for such a robust HMI. Technical documentation was clear.