3023 for A-034-4-16

3023 comparator inside A-034 indicator units

The 3023 is a voltage amplifier comparator used as an internal electronic module in A-034 series radio altimeter indicator units. It is not intended to operate as a separate aircraft instrument. The board works inside the indicator, where it takes part in processing electrical signals related to altitude indication. In the A-037 radio altimeter equipment set, the indicator must receive, process and display altitude information correctly, and the 3023 module is one of the electronic elements involved in that internal signal path.

Signal processing role of the 3023 module

The function of the 3023 is connected with amplification and comparison of voltage signals. In practical terms, the module receives input voltage levels from the indicator circuitry, compares them with reference values and helps form the control or measurement signals needed for correct indication. This kind of board is not usually described by a long list of standalone performance data, because its characteristics are tied to the complete indicator circuit. The module should therefore be checked as part of the A-034 indicator, not as an independent avionics unit.

3023 in the A-037 radio altimeter set

The 3023 board is used in indicator units that belong to the A-037 radio altimeter equipment set. The A-037 system provides radio-altitude information, while the A-034 indicator family presents this data to the crew or connected aircraft systems. Inside that chain, the 3023 supports the indicator’s internal electrical processing. If the comparator fails or works outside its intended parameters, the problem may appear as incorrect indication, unstable signal formation or failure of a related indicator function, depending on the exact circuit and aircraft installation.

Compatibility of 3023 with A-034-4 indicators

The 3023 comparator is associated with indicator units A-034-4-16, A-034-4-22 and A-034-4-11. These are the relevant installation positions for this board within the A-037 radio altimeter equipment family. Since the board is installed inside the indicator, replacement should be done only by designation and according to the repair documentation for the exact indicator version. A visually similar circuit board should not be treated as interchangeable without checking the indicator modification, wiring, adjustment requirements and passport data.

Service data for the 3023 comparator

According to the provided passport information, the “Basic Technical Data” section for the 3023 voltage amplifier comparator is not specified separately. This is typical for internal functional boards whose operating conditions are defined at the level of the complete avionics unit. Service life and storage life correspond to the A-037 radio altimeter and its associated equipment. Warranty operating time and storage warranty are recorded through the product documentation. For supply or repair, the main value is correct identification, documentation and confirmed compatibility with the required A-034 indicator.

Ordering and repair notes for 3023

When ordering the 3023 board, it is better to describe it as a voltage amplifier comparator from the A-034-4-16 indicator or another applicable A-034-4 version. This helps avoid confusion with separate comparator modules or unrelated electronic boards carrying similar numbering. The part should be supplied with available passport or repair documentation, and its installation should follow the technical documentation for the indicator and the A-037 radio altimeter. If the item is removed from equipment, its condition should be confirmed by inspection or bench testing in the relevant indicator circuit.

Product Name: Voltage Amplifier Comparator
Part Number: 3023
Product Type: Internal electronic comparator module / circuit board
Function: Amplification and comparison of voltage signals
Application / Where Used: A-037 radio altimeter equipment set
System / Installation Area: Internal circuitry of A-034 radio altimeter indicator units
Installed In Indicators: A-034-4-16, A-034-4-22, A-034-4-11
Associated Equipment: A-037 radio altimeter
Operation Mode: Installed inside indicator unit; not a standalone device
Basic Technical Data: Not specified separately in the product passport
Service Life: Corresponds to A-037 radio altimeter equipment
Storage Life: Corresponds to A-037 radio altimeter equipment
Warranty Operating Time: 2000 hours
Warranty Storage Period: 2 years
Alternate Designations: 3023; Voltage Amplifier Comparator 3023; Comparator 3023; Amplifier Comparator 3023
Technical Documentation: Product passport VRO.015.000 ET and documentation for A-034 indicators / A-037 radio altimeter

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