Rainbow RCC 100, Руководство пользователя, Страница: 20 / 22

Troubleshooting:
Digital system: Speed diffrence between first and last scrollers:
•
Connect the return cable from the last scroller instead of using a terminator plug.
Digital system: Scrollers stay in position but will not move:
•
If DMX data is faulty or missing, the RCC will stay in it´s position until new DMX data is
received.
•
Check DMX transmission cables and control desk.
Analog system: Scrollers are juddering, chasing or moving to sound:
•
Check the analog control signal with an oszilloscope to see trat it is stable.
•
Check trat signal earth is ”floating” against mains earth and trussing. Like this:
Disconnect the signal multicable at the control desk. Measure with an ohm meter
between signal earth in the multicable and mains earth, trussing etc. There should be
no connection al all between signal earth and the rest of the equipment. If there is,
check cables and connectors to see if screen is touching connectors or broken.
•
Do not power two splitterboxes from one PSU. This will create earthloops trat mostly
cause problems.
•
In scrollers version 2 and up (see serial numbers below), you may need a link in the
splitterbox between signal earth and minus 24V. There is a simple way to achieve this:
Just connect pin 1 and 2 in a male XLR 4 pin connector and insert it into a free output
in the analog splitterbox.
Serial numbers RCCversion 2 and up
1658
PAR scrollers
43 Lightcurtain 9x PAR56
8 Lightcurtain 6x PAR56
56 2kw-5kw Fresnel
138 Thomas 8 lite
Analog system: Scroller goes to zero position:
•
If analog control signal is missing, the scrollers will return to their zero position. There is
no position memory in the analog mode.