Here's how to manually address a GPIB device.
1. Assert the ATN and REN lines
2. For listening, assert the sixth bit (B5 on a scale of B0 to B7) of
the data lines
3. For talking, assert the seventh bit
Set the 5 LSB's (least significant bits) to the binary address of your
device.
At some point, the device should have asserted the NDAC line. The NRFD
line should not be asserted at the moment.
When all of those steps are complete, assert the DAV line until the
device asserts NRFD. You can then unassert the DAV line.
After those steps are complete, the device should be either listening or
talking (depending on what you set) and in remote mode.
After it's addressed, you can send commands to it manually by byte.
For more info, see this book:
Caristi,
Anthony J. IEEE-488, General Purpose Instrumentation Bus
Manual. San Diego, Academic Press, 1989.
Library of Congress call no: TK7895 B87 C37 1989
Hope this info helps.
