Johnson Systems JS-ICON Series Dimmer/Relay Rack (2410,2413,1220,1210/620) - Manual (Page 13)

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System Status - LED Indicators
RUN (Green)
Illuminates when the power is on, and the microcontroller status is in normal run mode. The LED
flashes once every 2 seconds when the system is in STANDBY mode.
ØA, ØB and ØC (Green)
Illuminates when the line voltage power is within the acceptable range of 100-130 VAC for each
phase, and the zero-cross reference circuitry is functioning properly. The LED will flash slowly
(once per second) when an under-voltage state of less than 100 VAC is sensed, and will flash
quickly (twice per second) when an over-voltage of greater than 130 VAC is sensed.
DMX A and DMX B (Yellow)
Illuminates when valid DMX is received on each of the inputs. Flashes when invalid DMX is
received.
TERM A and TERM B (Yellow)
Illuminates when DMX is terminated on each of the inputs.
ALARM
Illuminates and flashes twice per second when either a fire or security alarm is sensed on each of
the inputs.
O/T
Illuminates and flashes twice per second whenever one of three over-temperature sensing inputs
are triggered.
System Status - LCD Display
When DMX is being received, the top line of the LCD display shows the active DMX MODE (“PTY
A”, “PTY B”, “MERGE”, “DMX A+B”, “2 ROOM” or “PATCH”). When DMX is not being received,
the top line of the LCD display shows “MADD-24”, unless the system is in standby mode, then
“STANDBY!” is displayed.
The bottom line of the LCD Display shows the current status of the system, unless the system
configuration menu items are being accessed. Below are descriptions for each status indication.
NO RX!
Displayed when DMX is not being received on either input, and the system is not in scene mode.
AXXXBXXX
Displayed when valid DMX is being received on one or both inputs, and both inputs are not
terminated. “A” and “B” represent the DMX A and DMX B inputs, while “XXX” represents the
number of channels being received in each packet of data. For example, if the system is receiving
512 channels on DMX B and DMX A is disconnected, the display will show “A000B512”.
XXX XXX
Same as above, except the “A” and “B” is replaced with “ ” to indicate if one or both of the DMX
inputs are terminated. For example, if the system is receiving 48 channels on DMX A and 512
channels on DMX B, with only DMX A terminated, the display will show “ 048B512”. Refer to
menu items “DMXA TRM” and “DMXB TERM” on page 18 and 19 for further details.
SH XX:YY
Displayed when DMX is disconnected, and the systems predetermined DMX status hold (SH)
time is counting down. “XX” represents minutes, while “YY” represents seconds. Refer to menu
item “SH TIME” on page 21 for further details.