Instruction manual

14
need that information to run the diagnostics successfully. Note that
the test’s default settings are Address 378, and IRQ 7.
IMPORTANT: When performing this test be sure that MIDI In is con-
nected to MIDI Out on the PORTMAN using 1 MIDI cable, creating a
“loopback.” Otherwise the diagnostics will indicate that your unit is
failing.
The test “user interface” itself is quite simple. Just use the arrow keys
to move from one line to the next and the <Enter> key to move
through the different options for each line until they match the desired
values. Make sure that a single MIDI cable is connected from the
PORTMAN PC/P In to the PORTMAN PC/P Out, then move the cur-
sor to the “Run Tests” line and press the “Enter” key. PPDIAG.EXE
will then test the following four areas:
1. Internal Hardware.
This will indicate whether the PORTMAN and your computer are
connected properly and that the cable is good. If your PORTMAN
fails this test, it could mean a bad PORTMAN or other hardware
failure, but most often it means one of a few very specific things:
a) You have set the incorrect port settings in the PPDIAG sofware.
b) Your cable is bad.
c) Your setup may require you to use a DC 9v 300mA center posi
tive power adapter.
d) You may need to try a slower Parallel Port “Mode.”
2. Internal Buffer Test
This test checks the PORTMAN’s ability to handle the flow of data
through its circuitry. If your PORTMAN fails this test, it could
mean a bad PORTMAN or other hardware failure, but most often it
means one of a few very specific things:
a) Your cable is bad.
b) Your setup may require you to use a DC 9v 300mA power
adapter.
c) The Pulse Width setting in the diagnostic software requires
adjusting. See the section titled Extra Pulse Width for the details
of this procedure.
3. Transmit / Receive
This test checks the MIDI jacks, transmitters and receivers. If this