Page 30
UTY4422-002 Page 30 of 72
3.2 LED & ALARM / WARNING CONDITIONS
The following definitions apply throughout this section:
Table 11. LED and Alarm Conditions
BLINK LED is OFF for 1 second, and then blinks on count times (ON for 250
mS and OFF for 250 mS). This overall pattern is continued.
FLASH ON for 100 mS, OFF for 100 mS, continuing.
FLUTTER ON for 50 mS, OFF for 50 mS, continuing.
AMBER RED and GREEN turned ON at the same time.
The UNITY4422 has eight front panel LED's, each of which is described below.
3.2.1 Carrier (Green)
ON if receiver board is tracking.
3.2.2 RF LEVEL (Green)
ON if the incoming signal is OK and receiver board is tracking an ASI carrier. Otherwise OFF
(receiver board is not tracking).
3.2.3 MPEG (Green)
ON if synched on MPEG stream. FLASH if no MPEG sync but locked on carrier. Otherwise
OFF.
3.2.4 Cue (Green)
ON while any relay is closed. Also, relay must be ON for a minimum of 1 second. Otherwise,
OFF.
3.2.5 COMPEL™ (Green)
FLUTTER if COMPEL addressed to unit within last 5 seconds (keep alive commands are not
considered to be addressed to unit). ON if COMPEL Received within last 2 minutes. OFF if
COMPEL is not required or unit is not in Tracking mode. Otherwise, FLASH (unit is in
Tracking and no COMPEL within last 2 minutes).
The COMPEL light will also be on for approximately 2 minutes when the unit is first turned on
or reset.
3.2.6 Authorized (Green)
ON if authorized for current program and have MPEG sync. This LED will also be ON if
program being received is unencrypted. It will FLASH if not authorized for the current
program. It will be OFF if no program is available.