User`s manual

VC-55™ PR Voice Codec Board
User’s Manual
Version 1.3
Section 3 – Set-up & Control
Page 10
DVSI Confidential Proprietary
Follow the instructions of the Upgrade Device Driver Wizard that opens. When asked, point to the
location of the INF file in your distribution package.
Once the drivers and inf files are installed the VC-55™ Vocoder Board can be connected to the PC via
USB.
To verify correct operation of the board run the VC-55™ Vocoder Board Program (vc55param.exe).
Running the VC-55™ Vocoder Board Program vc55param.exe
The param utility program allows the operator to run the VC-55™-PR Vocoder Board. With this utility
program the board can encode speech from either one of the analog inputs and decode a compressed
voice file from another VC-55™-PR Vocoder Board via the RS-232 interface.
This program allows a user to:
 establish a real-time communication link to another vc-55
 set vocoder parameters
 store custom parameter setting into flash
Command Line Options
Text in brackets indicates the search text that the parser looks for.
Option Name Variables Description
Board Options
-F
Flash none
Writes the current parameter setting into
Flash. Once the parameters have been
written to the flash memory then the VC-55
can be cycled through power without loosing
the desired parameter settings.
Channel Options
20 115,200 bps This is the fastest rate.
40 57,600 bps
60 38,400 bps
80 28,800 bps
100 23,040 bps
120
19,200 bps This is the minimum rate that can
run either the vocoder.
-c
Channel UART Rate
240
9,600 bps This rate is not fast enough to run
the Full-Rate vocoder.
0
The [0] value sets slip mode to OFF. When
off the vocoder is not making any
adjustments for small fluctuations in the
number of data samples.
-s
Slip_Mode
1
The [1] value sets slip mode to ON. When
on the slip_mode is enabled the vocoder will
compensate for small fluctuations in the
number of data samples to maintain a high