User`s manual

VC-55™ PR Voice Codec Board
User’s Manual Version 1.3
Page 17
Section 6 – Support
Specifications
Digital Voice Systems, Inc.
The Speech Compression Specialists
Introduction
This section contains hardware Specifications of the VC-55™ Vocoder Board.
NOTE: All values are typical unless noted otherwise.
All specifications subject to change.
Board Connections
Channel Connection
Serial Port
Type RS-232 asyncronous
Connector RJ-45
VC-55™- PR Vocoder Board RS 232 Serial Port Pin Out
Pin Number Name
1 Not Used
2, 5, 6, 8 Connected internally to Ground
7 Tx Channel out
3 Not Used
4 Rx Channel In
Table 11 RS-232 Serial Port Pin Out
Audio I/O Connections
Line In
Type
Single-ended Input
Connector female 3.5mm Audio Jack
Maximum Input Level: 1.41 Volts RMS
Input Impedance 10 kOhms nominal
Bandwidth 20 Hz to 4 kHz (up to 48 kHz.
available)
D/A Resolution 16 bits
D/A Sampling Rate: 8 kHz (up to 96kHz. available)
SNR (Non-Weighted) 81 dB
DVSI Confidential Proprietary