Instruction manual

gram will search for the I/O address and IRQ of your parallel

port. While most PCs have the same setting (I/O address 378h,

IRQ 7) for LPT1, enough computers, especially laptops, use differ-

ent settings that it is a good idea to check first. Just follow the

instructions on the screen and don’t forget to write down the set-

tings the program gives you.

Next, type P4X4DIAG <Enter> at the DOS prompt to execute the

diagnostics program. Once in the program you can press your

computer’s <Enter> key to toggle through the available LPT set-

tings until it matches the setting for your port that you found

when running the LPT program described above.

Next, connect a single MIDI cable from In 1 to Out 1 on the front

connectors of the PORTMAN 4x4/S. This cable will be used to

“loop back” data and verify MIDI transmission and reception of

your PORTMAN.

IMPORTANT: When performing this test be sure that MIDI In 1

is connected to MIDI Out 1 on the front of the PORTMAN, oth-

erwise the diagnostics will indicate that your unit is failing.

Now connect the SMPTE In jack to the SMPTE Out jack using a

standard male-to-male 1/4” phone cable. This cable will be used

to “loop back” and verify SMPTE transmission and reception.

Move the cursor down to the “Run Tests” line and press <Enter>.

The program should run through 5 tests. If it fails any of these

tests, go back and make sure that you have followed these

instructions exactly. Once the first run of tests has passed, toggle

the Loopback settings to other combinations of MIDI Ins and

Outs, move the connecting MIDI loop back cable, and re-run the

tests to make sure that all of your PORTMAN inputs and outputs

are working properly.

When you run P44DIAG.EXE, you will get a title screen showing

the test revision number and a list of parameter settings. By this

time you should know what your Port Address and IRQ settings

are. If you don’t, go back and read the above installation instruc-

tions over again. You will need this information to run the diag-

nostics successfully.