Combine Yield Monitoring

Often the Acreage shown as harvested is not the same as what was planted or what the known field size is. It is recommended to do a Distance Calibration or Tire Radius (Found in Calibrations > Calibrate), to correct the wheel speed sensor for the tires installed on the Combine. Several in season factors can attribute to the acreage being a mismatch after a field is finished. The measured area for the harvested field can be corrected by going to Calibrations Area tab. There you can select the Grower, Farm and Field and correct the actual acres harvested to what is recorded.

The AFS Pro 700 display does not save all data to the internal memory. To save mapping data, a USB memory device must be installed in the display during operation. Examples of mapping data include: combine mapping (yield and moisture), as-applied mapping (seed, fertilizer, herbicide, etc.), vehicle data mapping (fuel used, engine load, slip, etc.). If operating without a USB, mapping data will be shown on the display, but when the display is shut down, it will not be saved. There is no way to recover this data.

Combines are the only units that ship from the factory with a Case IH approved USB stick. The USB stick is found in the plastic pouch with the combine operator's manuals.

Contact your dealer to purchase the recommended USB stick.

The display contains a feature called "Season Setup Date". Once the "season setup date" passes, data prior to that date will be archived and not visible on the display.

Data prior to the season setup date can be viewed in the desktop software.

Unlocks that can be transferred are:

• Task Controller
• AccuStat
• RowGuide

Unlocks can be transferred to and from the following displays:

• Pro 600 to Pro 700
• Pro 300 to Pro 700
• Pro 700 to Pro 700

Contact your local dealer for more details.

Header Center Offset is used for calculating autoguidance swaths and accurately mapping harvested regions. It is critical that this value be accurately entered in the combine display.

The Header Center Offset is determined by measuring the horizontal distance (parallel to the long axis of the front axle) between the GPS receiver and the center of the header.

If the center of the header is to the LEFT of the GPS receiver, the Header Center Offset will be a negative value. If the center of the header is to the RIGHT of the GPS receiver, the Header Center Offset will be a positive value. All directions are referenced while facing the normal direction of travel.

Yes. All Case IH AFS yield monitors should be calibrated in the following order:

1. 1. Maximum Working Height (called Header Stop Height in some older Case IH displays). Note that this calibration must be completed for each Crop Type. Failure to properly calibrate Maximum Working Height may result in unexpected data recording behavior.
2. 2. Distance Calibration (called Tire Radius Calibration on some Case IH combines)
3. 3. Moisture Calibration
4. 4. Weight (Yield) Calibration
5. 5. Area Calibration (optional, and can only be performed after harvest in a field is complete)

There are a number of tips that can improve the accuracy of your yield monitor calibrations.

• Maximum Working Height (Header Stop Height): Must be set for each Crop Type. It is best to do this with the appropriate header installed on the machine.
• Distance Calibration (Tire Radius Calibration): A minimum travel distance of 200' is required. However, Case IH recommends a travel distance of 400'. All distances should be measured with a tape, rather than a wheel. The Distance Calibration or Tire Radius Calibration should be performed in field conditions, with the header installed, proper tire pressure, and approximately half a tank of grain.
• Moisture Calibration: Moisture Calibration must be performed for each Crop Type. Case IH recommends using the Moisture Calibration Wizard. Ensure that the grain tank is empty before beginning harvest. Continue harvesting until the "Instant Moisture" and "Average Moisture" readings for the Task are very close.  Take 4-5 hand samples from the load and measure the actual moisture of each with an accurate, calibrated tester. Take an average of all the samples and enter this into the display as the "actual" moisture. Select no more than 3 Tasks for use in the Moisture Calibration, and ensure that the %Error for all of the selected Tasks are closely grouped.
• Grain Weight Calibration (Yield Calibration): The grain weight calibration must be performed for each Crop Type. Case IH recommends using the Moisture Calibration Wizard. Ensure that the grain tank is empty before beginning harvest. Select a target weight between 3000 and 10000 pounds, and ensure that each Task is within 5% of this target weight. Each Task must be harvested at a consistent flow rate, but flow rate should be varied among different Tasks. For example, cut 6 Tasks, with 2 at Low Flow, 2 at Medium Flow, and 2 at High Flow. To modify flow rate, adjust ground speed or your working width. Do not unload on the go during a grain weight calibration! Once you have completed 4 or more calibration loads, pick at least 4 loads with different flow rates and consistent %Error.  By default, new calibrations only apply to the current harvest Task and future harvest Tasks. Previous data can be updated in Data Management > Apply.

First, you need to verify that there is nothing mechanically wrong with your yield monitoring system.

Common sources of error include moisture in connectors (often as a result of pressure-washing the vehicle), damaged wiring harnesses), and a deflector plate clearance (if required) that is not within spec. Contact your Case IH dealer for assistance identifying these or other issues that might be to blame.

If you find that there is no mechanical issue with the machine and ALL of your grain weight calibration loads are consistently over 10% (but with similar error %), then it is usually safe to go ahead and calibrate with those loads. An example: You have 6 grain weight calibration loads at varying levels of crop flow. Your errors range from 12% - 13.8%. Select all 6 loads and calibrate. Since the error is consistent, this set of loads should produce acceptable calibration results.

Yes.  Just remember that you will need to complete loads (Tasks) at different flow rates and in some Crop Types is will take a long time to fill a semi trailer on low flow.

Also, remember that if you use a semi trailer for 1 load, you need to use it for all your grain weight calibration loads, as the weights of each calibration load must be within a 5% range. The recommended weight for calibration loads is 10,000lbs.

No. You can calibrate your yield monitor at any time during harvest.

To apply current calibrations to previously harvested data in an AFS Pro 600 or AFS Pro 700, use the "Apply Cal Values" feature in Data Management > Apply.

Case IH recommends that a full set of yield and moisture calibrations be performed every year. This will ensure that performance is not negatively affected by machine maintenance (new elevator chain or paddles, different flow sensor impact plate, etc.) or by crop characteristics (density, texture, etc.).

No. Calibration values are stored independently from yield data, and are not affected when data is deleted. To reset calibration values to default, import Default values for the selected Crop Type on the Calibrations > Crop screen.