5
If you are having trouble with the PORTMAN using your present printer
cable, you can purchase one either directly from MIDIMAN, through a
MIDIMAN Dealer or from your local electronics store.
MIDIMAN has found at least one easily obtainable cable that is known to
work with the PORTMAN 2x4. It is made by GC Electronics and has Part
#45-201-BU.
In the event that you are going to purchase a cable yourself and you can
not find the GC Electronics cable, you can use this chart as a guide to find a
compatible cable:
Line Name
DB25s (25 pin end)
Centronics
-Strobe*
1
1
D0
2
2
D1
3
3
D2
4
4
D3
5
5
D4
6
6
D5
7
7
D6
8
8
D7
9
9
-ACK*
10
10
Busy
11
11
PE
12
12
SLCT
13
13
-AUTOFD*
14
14
-Error*
15
32
-INIT*
16
31
-SLCT In*
17
36
Ground
18 thru 25**
16,19-30,33
* A dash in front of a line name denotes a line that is functionally
active when low.
** The ground lines on the DB25s end of the cable can tie to any of
the ground pins on the Centronics side, but they must run as
separate wires and not share any pin at the Centronics end (none
bridged or tied together).
Typically, if you ask your dealer for a 6-foot Centronics cable with all 25
wires connected, you will get a cable that matches the above table.
Note: Cables lengths of up to 30 feet have been found to work just fine
