3023 (A-034-4-16)

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.