MedRx Hearing Aid Analyzer

The historical MedRx page describes AVANT HIT+ as a compact hearing-aid analyzer for on-site performance checks. It says the measurements can help investigate reported background noise, battery use, sound distortion or feedback; these are intended uses, not a promise to resolve a user's complaint.

MedRx Hearing Aid Analyzer

Model: AVANTHIT+

Signal types

Pure tone; wideband noise including pink, white, Byrne LTASS and ANSI-weighted noise; chirp; ICRA

Hearing-aid analysis standards printed

ANSI S3.22-2009; IEC 60118-7:200

Loudest output as printed

≥95 dB SPL

Analog battery output

0.1–1.5 V adjustable in 0.1 V steps

Current test range

20 µA–20 mA; ±5% accuracy

Analog battery models

A10; A13; A312; A675

Frequency range

125–8,000 Hz

Test microphone

Maximum output sound pressure level 140 dB SPL; 4 × 20 dB attenuation; 2 cc coupler

Reference microphone

Coupler and other adapters listed

Magnetic induction coil

Maximum sound output 100 dB SPL; omnidirectional microphone; 31.6 mA induction coil

LED indicator

Green light signifies availability

Communication port

USB 2.0, compatible with USB 1.1

Power supply

USB and 5 V DC; printed current below 40 mA

Dimensions

Approximately 24 × 25 × 16 cm

Standard configuration

AVANT HIT+ main unit; test microphone; reference microphone; 2 cc coupler and accessories; four analog battery sets; USB data cable