Screening audiometer for quick check-up Maico ST 20

Screening audiometer for quick check-up Maico ST 20.

Features:

• Air conduction with 8 frequencies from 250 Hz to 8 KHz
• *Bone conduction with automatic masking (ref. 039-MO8100724)
• Diagnostic functions
• Compact (folio size) and lightweight (1.9 Kg)
• Easy and error free register with light indicators for the audiogram points
• *Optional loudspeaker for pediatric check-up
• *Optional LCD display for level and frequency or SISI-Test results (ref. 039-MO8112021)
• PC interface (requires software driver NOAH-3 ref. 039-MO8110446)
• *Optional patient response switch with flashing light signals

Models:

ST 20 Base - Ref. 039-MO8100712

The basic ST 20 is easy and safe to operate. Its unique light point technology combines audiometry and error free recording in one step. The 8 test frequencies of the ST 20 from 250 Hz to 8 kHz can be changed with two buttons. The solid and sound isolated headphones deliver up to 100 dB hearing level. The intensity can be changed with the slide control in 5 dB steps down to -10 dB. The actual value of frequency / level is indicated by a red light which can be easily marked on the audiogram paper. The automatic and sliding masking is very easy to operate.

ST 20 BC - Ref. 039-MO8100724

The ST 20 BC additionally offers bone conduction to the basic version. The output of the lightweight bone conductor goes up to 70 dB hearing level. The masking noise (with headphones) is automatically controlled if this option is selected.

ST 20 SISI-PC - Ref. 039-MO8112021

The ST 20 SISI offers the funtions of ST 20+ SISI test as diagnostic function. The LCD screen displays the level and frequency or the SISI test data and its results.The patient response switch shows the patient response by the blinking red light.

PC connection. The PC interface of the ST 20 SISI PC automatically transfers all test results to a connected PC. The software driver for NOAH audiometry and Fitting programme is optional.

 Technical data:

• Test signal: Pure or pulsed tones
• Test frequencies: 0.25, 0.5, 1, 2, 3, 4, 6, 8 KHz
• Level steps: 5 dB noise free
• Masking signal: White noise, automatic sliding AC=-15 dB, BC=+15 dB distance to test signal level
• Masking source: Contra lateral headphone
• Interrupter: Interruption or presentation of the test signal (changeable via setup-menu)
• Standards:
  • IEC-601-1
  • IEC 645-1 class 4, medical directive 93/42/CEE
• Power supply: 230V, 50/60Hz 4VA
• Dimensions: 29 x 22 x 6 cm
• Weight: 1.9 Kg
• Standard accessories: Headphones, mains cable (2.5 m), audiogram paper, 2 crayons

Air conduction:

• Dynamic range: -10 to 100 dB_HL (90 dB at 0.25 kHz, 6 kHz, 8 kHz)
• Headphones: HOLMCO 8103B26 with sound-excluding ear muffs

Bone condcution (only ST 20 BC and ST 20 SISI-PC):

• Dynamic range: -10 to 70 dB_HL (35 dB at 0.25 kHz, 40 dB at 6 kHz, 60 dB at 0.5 + 4 kHz, 65 dB at 3 kHz)
• BC headphone: B71 with head band

SISI test (only ST SISI-PC)

• Modulation test signal:
  • 4.8 / 0.2s; 1 dB (test)
  • 5 dB, 3 dB, 2 dB (conditioning)

Optional accessories and spare parts:

• 039-MO8110373   Carrying case
• 039-MO8111045   LCD display with cord for PC-connection for ST 20 Base and ST 20 BC
• 039-MO8111361   PC cable for ST Base and ST 20 BC
• 039-MO8111350   PC cable for ST 20 SISI-PC
• 039-MO8011091   Patient response button for ST 20 Base and ST 20 BC
• 039-MO8013010   Audiogram pad (50 sheets) for ST 20

Comparative table between MAICO Screening Audiometers