Frequently Asked Questions About Barfield GSTE Products

Frequently Asked Questions About Barfield GSTE Products

Having all your questions about Barfield products answered for a better experience, is one of our main objectives. Our customer support and engineering teams have compiled an extensive list of Frequently Asked Questions to save you time.  

Where can I find the Barfield App on my mobile device to use with my DPS1000 and/or 1811NG? 

Connect your mobile device to the Internet via local Wi-Fi network or phone provider data plan, visit the Apple App or Google Play, search and download the “Barfield ADTS” app.  

Here are the links: 

Apple App Store 

Google Play 

How do I connect my DPS1000 and 1811NG to a mobile device? 

Find the detailed process in this article published on our blog: How to connect the DPS1000 and 1811NG to a Tablet 

What is the password to connect Barfield ADTS app to the DPS1000 and 1811NG ? 

Refer to the link: How to connect the DPS1000 and 1811NG to a Tablet 

Does my mobile device Wi-Fi need to be connected to a local network to connect and work with my DPS1000 and/or 1811NG? 

No, the test set is equipped with Wi-Fi Direct which works pier-to-pier, it connects and communicates directly between the mobile device through the Barfield ADTS App to the DPS1000 or 1811NG.  

How can I get my latest software update on my DPS1000 and 1811NG? 

Through your mobile device: Having the Barfield ADTS App up to date on the mobile device will ensure that your test equipment runs with the latest software (HUIM and PCM) installed.  The App detects the equipment’s current firmware and triggers a message with the need to run the software update.  The customer can choose to run the update or do it later, but the App won’t run the Test Equipment until the sotfware is updated. 

Visiting Barfield’s website: Barfield GSTE website

How can I register my Barfield product? 

You can register any of your Barfield products including the products distributed by Barfield by clicking on the following link: Warranty Registration 

What is the warranty on my Barfield product?  

All warranties are 1 year 

Exception:  The  DPS1000 and 1811NG  have a 2 year warranty.  

What is the calibration interval of my Barfield product? 

All DPS1000 and 1811NG have a 1-year calibration cycle. 

Analog instruments may require calibration every 6 months. Refer to the specific Instruction Manual for more information.  

Where can I find the latest manuals and information letters? 

The information on the latest manuals and information letters can be found on the GSTE page here 

What is the difference between calibration vs bench check? 

An inspection/verification from a third-party, non-Barfield authorized repair station, is not considered recertification of the Test Equipment. It determines, at best, if the Test Equipment’s performance meets Barfield’s published specifications.  It is important to clarify that Recertification does NOT result in any adjustments to the measurement system. 

The process of Calibration requires the Unit Under Test (UUT) be compared to Certified Traceable Standards.  Adjustments are made to the UUT during calibration in order to align the UUT to the exact values of the Standards so that the errors at all required test points are zeroed out. 

A true Calibration results in the equipment operating at its optimum accuracy and performance levels, which ensures the instrument will maintain its performance specification for another year until the next annual calibration recertification is due.    

In summary, the recertification (calibration) is normally required to be performed every year; “inspection-verification” is NOT recertification. 

Where can I send my Barfield equipment for calibration and repair? 

Barfield Test Equipment can be sent to Barfield Headquarters. Please, contact our customer support at   

For Barfield authorize repair station contact 

If you have any more questions about Barfield products fill out the form below 


How to interface a TT1000A and TT1200A with an Aircraft?

How to interface a TT1000A and TT1200A with an Aircraft?

This is a brief description of some of the concerns regarding the proper point for interfacing the Barfield TT1000A and TT1200A test sets into the aircraft Turbine Temperature Indicating System. 

Where to break into the aircraft engine temperature indicating system to perform Indicator tests?   

Break at the engine terminal block

If the aircraft indicator is a servo, digital, or glass, it is recommended breaking into the system at the engine terminal block.

Test at the indicator

Note that if the indicator does not use aircraft power and has only 2 posts for the electrical connections then it is NOT recommended to break into the terminal block.

This type of system is powered solely by the millivoltage from the thermocouples and must be tested at the indicator.

The indicator is calibrated to measure K type thermocouple millivoltage with a specific in-line resistance, typically 8.00 ohms.

If the Test Set is configured to simulate the 8.00 ohms and interfaced at the terminal block, then the indicator will see the simulated 8 ohms plus the combined resistance of the Chromel and Alumel wire lengths between the terminal block and the indicator.

The result will be that the indicator will read lower than the Test Set display.

TT1000 Schematic Barfield

Where to find the manuals?

To learn more about the proper usage and interfacing of the test sets, please refer to the appropriate Instruction Manuals, availble on our website  56-101-00901  or 56-101-00930  

TT1000 Temperature Tester - Barfield