Description

Modifications: B8-300h, B8-600h, B8-1200h, B8-2400 (the last digits in the model’s name show the maximum recording duration in hours – sampling rate 8 k Hz, 2 bit ADPCM).

B8 model is produced in a plastic case. Dimensions: 59x28x9 mm, weight: 20g. Battery: CR2450.

Continuous operation duration:

in record mode: up to 250 hours;
in playback mode: up to 50 hours;
in standby mode: 2 years;
in VAS mode: 2500 hours.

Technical parameters:

Recording time in ExtraLongPlay mode (modified 2-bit ADPCM, sample rate 8 kHz, 16 Kbs) 300-2400 hours (flash memory 2-12 GB);
Supply voltage: 2,7… 3,2V
Operation temperature: -20 … +50 °C
Maximal audio band:

– At play back from PC: 100 … 6000 Hz
– At play back via earphone: 100 … 3800 Hz
– Audio sample rate: 16000, 8000, 4000 Hz

Codec resolution: 16 digits (using external microphone the dynamic range is 18 digits)
Sample rate: -72 dB
Quality, format and data recording density:

– Without compression (linear), sample rate is 16 kHz, 256 Kbit/s, k=16
– Without compression (linear), sample rate is 8 kHz, 128 Kbit/s, k=8
– Without compression (linear), sample rate is 4 kHz, 64 Kbit/s, k=4
– Logarithmic compression, sample rate is 16 kHz, 128 Kbit/s, k=8
– Logarithmic compression, sample rate is 8 kHz, 64 Kbit/s, k=4
– Logarithmic compression, sample rate is 4 kHz, 32 Kbit/s, k=2
– Modified 4-bit ADPCM, sample rate is 8 kHz, 32 Kbit/s, k=2
– Modified 2-bit ADPCM, sample rate is 8 kHz, 16 Kbit/s, k=1
– Modified 4-bit ADPCM, sample rate is 4 kHz, 16 Kbit/s, k=1
– Modified 2-bit ADPCM, sample rate is 4 kHz, 8 Kbit/s, k=0.5

where k is the coefficient, showing how many times the maximum record time decreases at record quality increase.

Data transfer rate via USB-interface: up to 1,5 Mbs
Current consumption:

– Stand-by mode (with LCD on): 0,14 mA
– Stand-by mode (with LCD off): 0,014 mA
– Record mode (depending on the recording profile): 1,5 mA – 3,6 mA
– VAS mode, audio level is lower than the threshold value: less than 0.2 mA

Built-in microphone sensitivity 7-9 m

Height	59 mm
Width	28 mm
Thickness	9 mm
Weight	20 g
Case	Plastic
Record time	300h, 600h, 1200h, 2400h
Battery life in record mode	250
Power supply	Battery
Battery life in VAS mode	2500
Battery life in stand-by mode	24
Built-in flash memory	2 Gb, 4 Gb, 8 Gb, 16Gb
Interface	USB 1.1
Audio recording format	Mono
Frequency band	100-6000 Hz
Dynamic range	-72 dB
Sample rate	4, 8, 16
Voice Activating System	YES
Timer recording	YES
Current consumption	1,5 mA – 3,6 mA in record mode