Crystal Vision
Hardware Installation
ShARC-XPUserManualR2.11
9
21/09/05
For Channel 2, DIL 3 and DIL 4 need to be in the ‘UP’ position. Likewise jumpers on J1,
J4, J16 and J17 need to be moved on to their GPI position. Again remote control via
auxiliary RS422 will no longer be possible. In this configuration a remote switch shorting
to ground can be as defined below. Pull-up resistors are already present.
Each slot has an associated set of connections on a socket and on a plug. The letters in the
table below refer to the connections described elsewhere in the manual.
Each slot has an associated set of connections on the frame rear-panel remote connectors.
The tables below show the GPI connections and describe their action.
GPI
Rem
ote
4:
3 i
n
pu
t t
o
16
:9
out
put
16
:9
inpu
t
to
4:
3 ou
tpu
t
4:
3 i
n
pu
t t
o
16
:9
out
put
16
:9
inpu
t
to
4:
3 ou
tpu
t
By
pass
By
pass
0
‘a’
High
Low
High
Low
1
‘b’
Ch1
High
High
Low
Low
2
‘c’
High
Low
High
Low
3
‘d’
Ch2
(204-XP)
High
High
Low
Low
4
‘e’
High
Low
Low
High
High
High
High
5
‘f’
‘tally out’
‘tally out’
High
High
High
Low
Low
High
High
Table showing GPI (General PurposeInterface) control
As supplied, each GPI output has a 330Ohm resistor in series with its output. This allows
for an external LED to be driven, connected to a DC voltage of +5V.
Note:
Latching switches are required
If DIP switches are used and then GPI is used, the last GPI command becomes the control
method. This may lead to the DIP switch settings not corresponding to the output. To
resume DIP control again, toggle the required DIP switch.