Gilderfluke&Co Mp3-50 Audio & Show Controllers - Manual (Page 15)

8) Board Error: (Mp3-50/8, Mp3-50/40) This LED will flash to show
you that the Mp3-50/8 or Mp3-50/40 has sensed one of the fol-
lowing errors:
a) Just booted: Lights for a short period each time the Mp3-
50/8 or Mp3-50/40’s microcontroller starts up.
b) RealTime DMX-512 Update Error: The optional checksum in
the DMX-512 RealTime update didn’t agree with the data
received.
c) RealTime Serial Update Error: The checksum in the RS-422
serial port RealTime update didn’t agree with the data re-
ceived.
d) Download Error: There was an error in the data being
downloaded to the Mp3-50/8 or Mp3-50/40.
e) Download Timeout: If the data being downloaded to the
Mp3-50/8 or Mp3-50/40 stops mid-stream, this LED will flash
as the Mp3-50/8 or Mp3-50/40 returns itself to normal oper-
ating mode.
f) Data Verification Failure: If you ask the Mp3-50/8 or Mp3-
50/40 to verify the data in its flash memory, and it finds an
error, it will flash this LED as well as displaying an error mes-
sage on your computer screen.
g) Memory locked: If you try to clear the flash memory or
send a show to the Mp3-50/8 or Mp3-50/40 while the Write
Protect is in the ‘locked’ position.
9) J8 ‘A’, ‘B’, ‘C’, & ‘D’ Input LEDs: (Mp3-50/8, Mp3-50/40) These
four LED will light to show current is flowing through the four Show
Control Trigger inputs. These LEDs are on the input side of the op-
toisolators, so a dim glow may indicate an input is getting a cur-
rent, but not necessarily enough to trigger an action. These four
trigger inputs are the only way to use a switch closure input to
start the animated sequence playing on a Mp3-50/8 or Mp3-
50/40.
10) Output LEDs (8 LEDs on Mp3-50, 8 LEDs on Mp3-50/8, 40 LEDs
on Mp3-50/40): These LEDs show the current status of the Show
Control digital outputs. If a LED is lit, then that output is ‘ON’. Be-
cause the outputs of a Mp3-50/8 or Mp3-50/40 are ‘Open Col-
lector, Switch To Ground’, you can ground out any output pin,
and the appropriate LED will light. This can be useful when diag-
nosing output wiring problems. If you are commanding ‘on’ an
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