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Unity 4600 User's Manual
Indicator Label
CUE
ALARM
AUTH
* LED states are defined as follows: Blink - alternating ON for ~100ms and OFF for ~2 seconds; Flash - alternat-
ing ON for ~500ms and OFF for ~500ms. Flutter - like flash but with shorter ~100ms ON and OFF times.
Rear-panel LEDs
The U4600 also has two LED (light-emitting diode) indicators on the rear
panel. They provide the following indications:
LAN – Green LED: On if active LAN connection detected. OFF otherwise.
ACT – Yellow LED: Flashing ON if ethernet packets are output or addressed
packets are input. OFF otherwise.
800032-01 Rev. C
Table 7: Front-panel LED Indicator Descriptions
Color and State*
GREEN constant
A user cue relay is closed (energized).
GREEN flutter
During a user relay "pulse" activation on any relay.
Off
All user cue relays are open (de-energized).
RED constant
One or more current alarm indications.
RED blink
An alarm event has occurred in the past and has not been
acknowledged and cleared by the user. Note that this state may
exist together with a current alarm (RED constant). In that case,
the blink state is defined as quickly cycling OFF-ON-OFF
(~100ms each) approximately every 2 seconds.
Off
No alarm condition currently exists.
GREEN constant
Unit has transport MPEG sync and the stream is not scrambled
(in the clear). Streams that are "clear" are always presumed to
be "authorized".
OR
Unit is authorized for current scrambled transport stream (or
selected program) and has transport MPEG sync. When using
Wegener CA ('97 Version), being "authorized" means being
addressed with current and valid ciphered keystream messages.
In a PIN system, if the transport stream is scrambled, and the
unit has been programmed with any key other than the null
'00000', then it presumes that it is "authorized".
GREEN flutter
Unit has successfully deciphered a valid descrambling seed in the
last five seconds. Normal behavior in functioning CA system.
Off
Unit has transport sync, the transport stream is scrambled, and
the unit is NOT authorized. Also OFF if no transport sync.
Meaning
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