FUNCTIONAL CHARACTERISTICS

VMEbus Compliance:

The analog output board is a

standard double height printed circuit board which is

compatible with the VMEbus specification (Rev. C.1).

VMEbus A16:D16

Board Address:

The physical address for the board

may be selected by on-board jumpers.  VMEbus address

lines A07 through A15 are decoded for board selection.

VMEbus Access:

Address modifier bits are

jumper-selected and decoded to support both

nonprivileged short I/O, supervisory short I/O, or both.

The board is factory-configured for supervisory short I/O.

Output Data Transfer:

Data for each analog output

channel is written directly into an on-board register

location dedicated to a specific channel.  The data is

then periodically retrieved from the register, and

converted to an analog voltage which is transferred to

one of 32 output sample-and-hold buffers.