J8 ‘a’, ‘b’, ‘c’ & ‘d’ binary – Gilderfluke&Co Sd-50 Audio & Show Controllers User Manual
Page 38
These four inputs are uncommitted optoisolators. Effectively, you are sending the external control sig-
nal into a LED which has a resistor wired in series. This requires external power be supplied from some-
where. If the device you are controlling the input from supplies power, then all is well. If you are wiring
these inputs to simple dry switch closures, you will need to ‘steal’ the power for them from somewhere.
!
!
J8 ʻAʼ, ʻBʼ, ʻCʼ & ʻDʼ Binary:
The four optically isolated digital inputs can be used to select up to fifteen different shows directly with
a binary weighted pattern of bits. If you need direct access to more than fifteen shows, use the ‘
’ input
instead of the ‘J8’ inputs.
To use the ‘J8’ inputs for binary show selections, you must set all four of these inputs (both opening &
closing edges) as ‘unused’ when you generate your AutoDownload file from PC•MACs. The binary pattern
is applied as follows:
Show #
ʻAʼ
ʻBʼ
ʻCʼ
ʻDʼ
comment
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
off
off
off
off
(there ain’t no show ‘0’)
on
off
off
off
off
on
off
off
on
on
off
off
off
off
on
off
on
off
on
off
off
on
on
off
on
on
on
off
off
off
off
on
on
off
off
on
off
on
off
on
on
on
off
on
off
off
on
on
on
off
on
on
off
on
on
on
on
on
on
on
If you are using our KP-200 for selecting and playing shows, it is wired as follows. The connection to
the KP-200 is through a ten position ribbon cable. Power for the KP-200 in this example is being ‘borrowed’
from the Sd-50/8 or Sd-50/40. If you are going to be running the cable from the KP-200 to the Sd-50/8 or
Sd-50/40 a long distance, or if you are picking up audio ‘noise’ through this input, you can use a separate
power supply to completely isolate the KP-200 and the Sd-50/8 or Sd-50/40.
Gilderfluke & Co.• 205 South Flower Street • Burbank, California 91502 • 818/840-9484 • 800/776-5972 • fax 818/840-9485
Sd-50/xx Manual / October 29, 2012 2:29 PM / page 38 of 120