PC Based Bera System (Model No. HV-BS-201)
PC Based Bera System (Brain-Stem Evoked Response Audiometer)
Features:
- BERA,MLR,LLR& P300Tests
- Left/Right Comparison on single screen
- Recording of upto 16 waves
- Manual/ Auto Jewett-Marks on waveforms
- Programmable user defined intensities settings
- Latency Intensity Graph
- Hot Keys for easy operation
- PC Laptop compatible
- A4 Size standard prints on Laser I Inkjet Printers
Technical Specifications:
Bera
Channels : 2
Sensitivity : 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100, 200, 500μV/div: 1, 2, 5, 10, 20 mV/div.
Highcut : 2 pole (12 dB/ octave) filter. Selectable at 100, 200, 500 Hz; 1, 2, 3, 5, 10 kHz.
Lowcut : Selectable at 0.2, 2, 20, 30, 100, 200, 500Hz.
Sweep speeds (EPs) : 1 to 1000 ms/div in 19 steps (1, 1.5, 2, 3, 5, 7 .5, 10, 15, 20, 30, 50, 75,100, 150, 200, 300,500, 750, 1000).
C MRR : > 100dB.
Input Impedance : > 100 M Ohms (common mode).
Noise : <0.5μV rms(1 Hz to 10 kHz).
A/D Convertor : 14 bit analog-digital conversion.
Average : Number of averages per channel upto 9999.
Auditory Stimulator
Stimulator : Headphone.
Stimulus : Click (Rare, Comp., Alt), Pips.
Frequency : 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 6000 & 8000 Hz.
Intensity : 0-110 dB nHL (30-140 dB SPL).
Presentation : Left, right or both ears.
Click duration : 100 μs square wave clicks. Rarefaction, condensation or alternating polarity.
Envelopes : Linear, Gausian, Black man, Hanning Masking : White noise contra lateral masking from 0 dB to 80 dB nHL (30 -110 dB SPL). Rate : User definable.
Minimum Computer Configuration
OS: Windows XP Pro/Windwos7 Professional 32bit, Processor: Core2Duo or higher, RAM: 2GB or higher, 40 GB hard disk or higher, CD/DVD Optical Drive, Screen Resolution 1024x768 or higher
Bera Cart :
Two tier, heavy duty cart made of pre-laminated 18 mm thick board with -
- Castors having locking arrangement.
- One pull out shelf for computer keyboard.
- Bottom shelves for printer, PC tower.
- Mounting bracket for flexible arm.