1. Product Overview & Intended Use

️· What it is: The KRTBS is an isolated ratio and bias signal converter. It takes an input signal (likely a voltage or current), isolates it electrically, converts the ratio, and introduces a bias. The isolation is crucial for safety and noise reduction between circuits.
️· Primary Functions:
- Ratio Conversion: It adjusts the ratio of input signals. (e.g., changes a 1:10 signal to a 1:5 signal)
- Bias Adjustment: It adds a DC offset to the signal.
- Isolation: Electrically isolates the input and output circuits, preventing ground loops, protecting equipment, and improving safety.
️· Applications: The document doesn’t explicitly state applications, but devices like this are often used in industrial automation, process control, data acquisition, and any application needing signal conditioning and electrical isolation.

2. Technical Specifications and Key Features

️· Isolation: A key selling point is the electrical isolation provided. This isolation protects equipment and improves safety.
️· Ratio Adjustment: The KRTBS allows for adjustment of the input signal ratio.
️· Bias Adjustment: A bias can be applied to the output signal.
️· Circuitry: Contains components like reversers, ratio/bias adjustment circuitry, amplifiers, and output drivers. The schematic (last page) gives a more detailed view.
️· Connections:
- Input Connections: Marked 'U' (positive) and 'V' (negative).
- Power Input: Standard power connection.
- Ratio/Bias Adjustment: Dedicated adjustment potentiometers.
️· Schematic Diagram: A detailed schematic showing the internal circuitry and signal flow.
️· Physical Dimensions: Although not directly detailed, a physical diagram on page 4 shows the unit's dimensions.

3. Key Terminology & Concepts

️· Ratio Conversion: Changing the relationship between two input signals.
️· Bias: Adding a DC offset to the signal.
️· Electrical Isolation: Separating the input and output circuits to prevent ground loops and provide safety.
️· Reverser: A circuit element used for reversing polarity or signal direction.
️· Amplifier: To increase the signal amplitude.
️· Driver: Provides the necessary voltage or current to drive an output load.

4. Important Considerations & Notes

️· Adjustments: The unit includes potentiometers for adjusting the ratio and bias. Proper adjustment is essential for correct operation.
️· Input Shunt Resistor: A resistor is included in the input circuit specifically for handling current input signals.
️· Negative Ratio: The schematic notes that certain elements are specifically for handling negative ratio applications.



Overall, the KRTBS is a versatile, isolated signal converter offering ratio adjustment, bias application, and reliable electrical isolation. It is likely suited for industrial and data acquisition applications where these features are critical.