TDT RZ2, Manual

Page: 192 / 736

4-16 System 3
RV8 Barracuda Processor
Bandwidth and Timing
Standard Sample Rates are in powers of two from 6 kHz to 400 kHz. The actual
sample rate is given in the box to the right.
Arbitrary Sample Rate can be from 10 Hz to 500,000 Hz. In the Arbitrary Sample
Rate box type a number between 10 Hz and 500,000 Hz. To reset to the Standard
Sample Rates type 0 in the Arbitrary Sample Rate box. To determine the true
sample rate click Check Realizable . The sample rate is based on the system clock
(25 MHz) or a sample period of 40 nanoseconds (40 * 10-09). To calculate
the true sample rate, take the reciprocal of the required sample period in seconds.
Device Configuration Parameters
The device configuration parameters allow RPvdsEx access to unique features on the
RV8. To access a particular parameter either double-click on the parameter name or
click on the parameter and click the Modify button. To reset the parameter value to
the default mode click Clear.
Special Mode
The Special Mode is a bit-masked value that determines which features of the
Barracuda are activated. The default mode for the Special Mode is zero. This makes
the system behave like other RP devices. There are seven modes that are accessed
through the bit-mask shown below. Special Mode can be accessed with the ActiveX
controls SetDevCfg and GetDevCfg.