New And Original Trimble 50581 Adapter Cable

The Trimble 50581 adapter cable is a genuine OEM component designed for agricultural and surveying applications where compatibility, durability, and signal accuracy are essential. 

Also known as the Trimble interface cable, 50581 conversion harness, or ZTN50581 adapter cable, this product is a critical accessory for farmers, contractors, and technicians who rely on Trimble AG-372, AG-252, AG-162, and AgGPS receivers.

By providing a seamless connection from a Deutsch 12-pin port to a 12-pin Conxall or DB9 interface, this adapter harness ensures that your GNSS receiver communicates properly with external devices such as field computers, yield monitors, radios, and autopilot systems.

Unlike generic conversion cables, the Trimble 50581 cable is purpose-built for rugged field environments, guaranteeing stable data transmission and long-lasting performance in harsh conditions.

Why Farmers and Technicians Choose the Trimble 50581 Cable

1. Genuine OEM Quality

When it comes to GNSS and precision farming, accuracy is everything. The OEM Trimble adapter harness ensures that your receiver connects exactly as intendedno wiring errors, no compatibility doubts, and no risk of damaging sensitive electronics.

2. Built for Harsh Environments

Agricultural machinery operates in dusty, wet, and vibration-heavy conditions. The 50581 interface cable features weather-sealed connectors, reinforced strain relief, and ruggedized materials to withstand field abuse.

3. Plug-and-Play Compatibility

This conversion cable is designed for a direct fit. No splicing, soldering, or guessing pinouts just plug into your Deutsch 12-pin Port A on the receiver, and connect the other end to your device.

4. Multi-Device Functionality

Whether you’re linking to a yield monitor, an autopilot steering system, or a field computer that requires NMEA, TSIP, RTCM, or RS-232 signals, the Trimble 50581 adapter harness supports it all.

5. Protects Your Investment

Using non-OEM or poorly wired cables can lead to communication failures, lost correction signals, or even equipment damage. The 50581 adapter cable protects your receiver, saves downtime, and keeps your farm operation efficient.

Technical Specifications

• Part Number: Trimble P/N 50581
• Alternate SKU: ZTN50581 (dealer variant)
• Connector Types:
  • Receiver side: Deutsch DTM 12-pin (Port A)
  • Device side: Conxall 12-pin / DB9 interface (depending on device)
• Supported Signals:
  • RS-232 input/output
  • NMEA / ASCII data formats
  • TSIP protocol support
  • RTCM / CMR corrections
  • 1PPS (Pulse Per Second) output
  • Event inputs/outputs
  • Power (V+ and V-)
• Applications:
  • GNSS receiver to field computer
  • Yield monitoring systems
  • Auto-steering solutions
  • Third-party agricultural monitors
  • External radios and correction devices
• Environmental Protection: Sealed connectors, vibration-resistant design, strain relief

Compatible Devices

The Trimble 50581 adapter cable is compatible with:

• Trimble AG-372 GNSS receiver
• Trimble AG-252 receiver
• Trimble AG-162 receiver
• AgGPS series receivers
• Select Ag Leader, Case IH AFS, and New Holland PLM monitors requiring DB9/Conxall input

This versatility makes the 50581 conversion cable one of the most in-demand accessories for precision agriculture systems.

How the Trimble 50581 Adapter Harness Works

1. Connect to Port A of your GNSS receiver using the Deutsch 12-pin connector.
2. Attach the device side of the cable (Conxall or DB9) to your external monitor, yield sensor, or field computer.
3. Configure receiver protocols (e.g., NMEA sentences, RTCM input) through the AG-372 or AgRemote utility.
4. Secure the cable properly using tie wraps or P-clips, ensuring no bends occur near the Deutsch connector.
5. Power on your system and verify data communication with your device.

By serving as a bridge between your GNSS receiver and external equipment, this adapter harness ensures smooth data exchange and continuous signal integrity.

Installation and Maintenance Best Practices

• Always install with power off to avoid electrical surges.
• Avoid bending the cable directly at the Deutsch connector.
• Use cable clamps and P-clips to minimize strain and vibration wear.
• Keep connectors clean and free of moisture, dust, or corrosion.
• Periodically inspect for abrasion or cracks in insulation.
• Replace damaged cables immediately to prevent system downtime.

Advantages Over Generic GNSS Cables

• Correct Pin Wiring: Prevents damage from mismatched signals.
• Durable Construction: Withstands field conditions better than non-OEM versions.
• Guaranteed Compatibility: Designed for Trimble receivers.
• Resale Confidence: Buyers trust OEM cables, making your equipment easier to sell later.

Use Cases in Agriculture

• Precision Farming: Link GNSS receivers to monitors for real-time positioning.
• Yield Mapping: Send GPS data to yield monitors for harvest tracking.
• Autopilot Systems: Deliver position data to auto-steer modules.
• Correction Inputs: Connect to external RTK radios for centimeter accuracy.
• Machine Guidance: Provide NMEA outputs to third-party field computers.

Frequently Asked Questions 

What is the Trimble 50581 cable used for?

It’s an adapter harness that converts the Deutsch 12-pin Port A of Trimble receivers to a Conxall/DB9 connection, enabling communication with external devices.

Is the Trimble 50581 the same as ZTN50581?

 Yes. ZTN50581 is a dealer-referenced SKU for the same cable. Both refer to the OEM Trimble part number 50581.

Which receivers are compatible with this cable?

The cable works with Trimble AG-372, AG-252, AG-162, and other AgGPS receivers. It can also connect to Ag Leader, Case IH AFS, and New Holland PLM monitors.

Can I use this cable for RTK corrections?

Yes. The adapter supports protocols such as RTCM and CMR, making it suitable for RTK correction input/output.

Is this cable weather-resistant?

Yes. It is designed for field use, featuring sealed connectors and reinforced insulation, although proper installation is required to prevent damage.

What happens if I bend the cable at the Deutsch connector?

Bending at the Deutsch connector can damage pins, compromise seals, and cause connection failure. Always secure with strain relief.

How do I know if my system needs this cable?

If your external monitor or device requires a DB9 or Conxall input, and your Trimble receiver has only a Deutsch 12-pin Port A, you need the 50581 interface cable.

Can I replace a generic adapter harness with this one?

Yes. In fact, it is recommended to use the OEM Trimble 50581 cable to ensure correct wiring and signal reliability.

Does this cable carry both power and data?

Yes. The harness includes power lines (V+ and V-) along with data and signal lines.