Receive Interrupt Test; Smpte I/O Test - M-Audio Portman 4x4 Manual

Transmit/Receive Test: Fail
a.) Make sure that your MIDI cable(s) are good.
b.) Make sure that you have a MIDI cable connected between the
PORTMAN MIDI In and the PORTMAN MIDI Out selected in
the diagnostic program. Your MIDI instruments should not be
connected for this test; it is a closed-loop test with one MIDI
cable connected between the MIDI jacks of the PORTMAN.
c.) Adjust the Delay Pulse setting in the diagnostic program.
d.) Ensure the H/W Mode setting matches your computer's par-
allel port mode.

4. Receive Interrupt Test

This test checks the reception of data from the PORTMAN under
interrupt (IRQ) control. If this test fails, it is almost always IRQ-
related.
Most computers use IRQ7 for LPT1 and IRQ5 for LPT2. If you
have the PORTMAN connected to LPT1 on your computer, and
have IRQ=7 set in P4X4DIAG.EXE, but it fails the Receive
Interrupt Test, you could have a computer with IRQ5 assigned to
LPT1. Try changing the IRQ setting to IRQ5 in the
P4X4DIAG.EXE program.
If you are unsure what your port IRQ is or how to find out, please
see the section in this manual titled "About Your Printer Port"
which immediately precedes this section, or you can consult your
computer owner's manual.
It is also possible that you have an older computer that by design
does not have an IRQ internally attached to its parallel port. If the
computer is a desktop model, you can usually add an inexpensive
add-on card to give this machine more LPT ports, with IRQs. On
a newer machine, it is possible that the IRQ is disabled on your
parallel port, and simply needs to be switched on. For informa-
tion regarding this, consult your computer owner's manual, or
computer manufacturer directly.

5. SMPTE I/O Test

This test makes sure that the SMPTE In and Out jacks are func-
tioning properly. If this test fails, make sure that the cable you
Tx=0h Rx=Timeout
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