| The DB1600 is an inexpensive
digital card that provides basic digital control
capability without some of the more sophisticated
features available on the DRM1650. The DB1600
allows for the control of 16 bits of data. The
logic levels may be programmed anywhere within
the range of ±12 V. Readback function
allows the bit pattern to be read back by the
system. The threshold setting for the
readback function may be programmed to any level
between ±10 V. To minimize the possible
effects of signal skew among the 16 different
bits, there are two additional signals that may
be used for synchronization: DCB_STROBE and
DCB_ENABLE These signals are programmed/controlled
independently of the 16-bit main word. Digital
words may be individually sent to the DUT or
stored into RAM and sent as a vector pattern. The
maximum amount of RAM is 10 M words and the
maximum clock rate it is delivered can be
programmed from 1 MHz to 25 MHz. To maintain a
cost effective approach, pattern creation and
editing is done via any editor capable of
creating a text-based file (.txt) where each word
is separated by commas (CDV format). This
format is commonly available in most spreadsheet
programs.
|
