Tazarv Afzar Co.

LS -USB8
8 channels analog voice logging board

TECHNICAL SPECIFICATION:
• Number of channels :8
• Max Boards/System: 6. number may limited by system USB ports.
• Analog interface: Onboard Hiz interface

HOST ITERFACE:
• Bus Type: USB.1
• Bus speed:10Mb/s
• Shared memory: None
• I/O ports: None
• Hot Plug & Play

POWER REQUIREMENTS:
• +5V DC : 0.5 A max
• operating temperature: 0C to +50C
• storage temperature:-20C to +70C
• Humidity:8% to 80% non-condensing

TONE DTECTION:
• DTMF Digits: 0 to 9, #, A,B,C,D per Bell core LSSGR Sec 6 Dynamic range -36dbm to +3dbm per tone
• Minimum tone duration : 40 ms , can be increased with software configuration
• Interdigit timing Detects: like digits with a> 40ms inter digit delay

TELEPHONE INTERFACE:
* • Trunk type : HiZ analog interface impedance >20 KOhm
• Ring detection: 40 to 130 Vrms
• SNR: -40 dB Cross talk coupling -70 dB
• Speech digitization : 64 Kb/s, -law PCM (companding to ADPCM performed in spring ware)
• Freq.response:300 to 3400 Hz ±3 dB
• Connector : Rj11*4 + USB

Pulse DETECTION
• 10 pps : 0 to 9

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