אודיומטר MA-52/MA-53

תכונות האודיומטר:

• Air, bone, speech and freefield with built-in power amplifier
• Ergonomically designed case, soft handle for comfortable transport
• Tone, pulse, warble, masking and CD/tape/microphone input
• Clinical features such as SISI, DLI, ABLB and Carhart decay testing
• Lightweight - only 5,8 kg/12,8 lb., including all accessories
• Optional insert phone capabilities

Truly portable design
The ergonomical MA 52 has a rugged, integral carrying case with ample storage for all accessories.
The soft, comfortable handle and light weight - 5.8 kg/12.8 lb. including accessories - makes transporting the instrument easy. And, it takes less than one minute to open the front cover, connect to power and start to operate.

Diagnostic tests for clinical use
The MA 52 has most diagnostic tests such as SISI, DLI, ABLB, Carhart decay and Stenger. Special functions like channel swap, tracking and interlock make operating the instrument easy.

Easy to operate with ergonomic design
The MA 52 is fast and easy to operate. The unique detented intensity level control knob can be operated from the top or side. Locating the interrupt/presentation bars and frequency buttons adjacent to the intensity knob allows one handed control. The two channel keyboard layout with LEDs for each function ensure error-free operation. A large backlighted graphical LCD display shows all settings and test results.

Automatic data transfer to PC
The MA 52 has a standard RS 232 serial interface to automatically transfer test results to a connected PC.

MA 52 with accessories in integral carrying case

Technical data

Test signals Pure, pulse, warble tone; narrow band, white, speech masking noise with two channels
Test frequencies 0,125; 0,25; 0,5; 0,75; 1; 1,5; 2; 3; 4; 6; 8 kHz
Level steps 5 dB (2 dB, 1dB via setup) noise free
Inputs CD/tape, live speech microphone, external masking, patient microphone, patient response
Outputs AC, BC, insert phone, freefield, monitor phone, electrical output
Tests SISI, DLI, ABLB, Carhart decay test, Stenger test Functions Channel swap, tracking, interlock
Standards IEC 601-1,IEC 645- 1 class 2, (IEC 645-1 class 1 optional)
IEC 645-2 according to medical directive 93/42/EEC
PC-interface serial RS 232C, 9-pin connector, MAICOprotocol
Power supply Mains 100-240 V~, 50/60 Hz, app. 25 VA
Dimensions/weight W x D x H: 36 x 46 x 15 cm / 4.6 kg, with accessories 5.8 kg

Air-conduction:
Dynamic range -10 to max. 120 dBHL
Headphones Telephonics TDH 39 (other types available)
Bone-conduction:
Dynamic range -10 to max. 70 dBHL
Bone conductur Radio Ear B 71 (other types available)
Masking signal narrow band noise, speech masking noise
Freefield:
Dynamic range -10 to max 90 dBHL at 1m distance, with optional active speakers up to 120 dBSPL

Standard accessories TDH 39, B 71, mains cable, patient response 
Optional accessories Insert phones 5A, Loudspeakers (portable / standard / active), monitor phone, talk back microphone