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ET1.1-ST2 Electronic turntable
professional instruments
outline s.n.c. di noselli g. & c. - v. leonardo da vinci, 56 - 25020 flero (bs) - italy - tel. +39-30-3581341 fax +39-30-3580431
Web Site:
http://www.outline.it
E-Mail :
Control protocol
“COMPUTER PARALLEL PORT” (9 pins connector).
Pin 5: ground
Writing bits
Pin 1: unit “A” movement ahead bit
Pin 2: unit “B” movement ahead bit
Pin 3: unit “A” movement behind bit
Pin 4: unit “B” movement behind bit
Reading bits
Pin 6: unit “A” step bit
Pin 7: unit “B” step bit
Pin 8: unit “A” zero position bit
Pin 9: unit “B” zero position bit
Example of unit “A” control
Pin 1
Pin 3
Pin 6
Pin 8
Pos.
0
0 5
10 15 20 25 30
30 25 20 15 10
5 0
35
5
35
0
34
5
34
0
33
5
33
5
WR
IT
E
RE
A
D
Connection cables
PC – ET1.1 connection
DB25 male connector
View from soldering side
DB9 male connector
View from soldering side
Pin 5----------Pin 1
Pin 6----------Pin 2
Pin 7----------Pin 3
Pin 8----------Pin 4
Pin 20 --------Pin 5
Pin 15 --------Pin 6
Pin 13 --------Pin 7
Pin 12 --------Pin 8
Pin 10 --------Pin 9
14
15
16
17
18
19
20
21
22
23
24
25
1
2
3
4
5
6
7
8
9
10
11
12
13
6
7
8
9
1
2
3
4
5
