---
title: How to do a system check?
description: Conducting a 1:1 test is the simplest way to execute a self test.
---

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1. [Raytech USA Help Center](https://support.raytechusa.com/migration?hsLang=en)
2. [Single Phase & Three Phase Ratiometers](https://support.raytechusa.com/migration/single-phase-three-phase-ratiometers?hsLang=en)
3. [TR-Mark III 250V](https://support.raytechusa.com/migration/single-phase-three-phase-ratiometers?hsLang=en#tr-mark-iii-250v)

# How to do a system check?

## Conducting a 1:1 test is the simplest way to execute a self test.

 1. Begin by connecting the clips as follows:

- Connect H1 to X1

- Connect H2 to X2

- Connect H3 to X3

- Connect H0 to X0

2. Turn on the power to the system.

3. Navigate to the settings menu and select the configuration labeled Yn:Yn, with the parameters set to 0 and 100V.

4. Once configured, press the "Go ABC" button to initiate the test.

5. After the test is complete, you should observe results indicating a reading of approximately 1.0000 on each phase.

Before powering on the test set, it is essential to conduct a visual inspection of your test leads. Check for any signs of damage, including issues with wire insulation, clips, and clip insulators.

 

- [Frequently Asked Questions](https://support.raytechusa.com/migration/frequently-asked-questions?hsLang=en)
- [Capacitance / Dissipation Factor / Power Factor](https://support.raytechusa.com/migration/capacitance-dissipation-factor-power-factor?hsLang=en)
- [Low Resistance](https://support.raytechusa.com/migration/low-resistance?hsLang=en#main-content)
  
  
  
  
  
    - [Micro Centurion II (MC2)](https://support.raytechusa.com/migration/low-resistance?hsLang=en#micro-centurion-ii-mc2)
    - [Kelvin Spike Probes](https://support.raytechusa.com/migration/low-resistance?hsLang=en#kelvin-spike-probes)
- [mini-ATOS](https://support.raytechusa.com/migration/mini-atos?hsLang=en)
- [Single Phase & Three Phase Ratiometers](https://support.raytechusa.com/migration/single-phase-three-phase-ratiometers?hsLang=en#main-content)
  
  
  
  
  
    - [TR-Mark III 250V](https://support.raytechusa.com/migration/single-phase-three-phase-ratiometers?hsLang=en#tr-mark-iii-250v)
    - [TR-1](https://support.raytechusa.com/migration/single-phase-three-phase-ratiometers?hsLang=en#tr-1)
    - [General](https://support.raytechusa.com/migration/single-phase-three-phase-ratiometers?hsLang=en#general)
- [Winding Resistance](https://support.raytechusa.com/migration/winding-resistance?hsLang=en)

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