ASM 988A – Manual
13
FAULT SETTINGS
Under the Fault Settings menu, several parameters related to the Fault Log and Alarm
Relays can be configured. Faults are measured system parameters that are out of
tolerance. The unit measures the input and output states of the modulator, fan speed, unit
temperature, and system voltages. If any of these parameters are out of specification, the
fault indicator on the front panel will light, an entry will be made in the Fault Log, and, if
activated, a relay alarm will trip.
The ASM 988A monitors the following conditions:
-Temperature: Above or below the normal internal operating temperatures: 0-50C
-Voltages: Internal 5V, 3.3V, 1.8V, +12V, -12V 10% above or below nominal values.
-Fans: At least one fan isn’t working properly.
-Input Lock: There is not valid input on the selected input or the input Transport Stream
bitrate doesn’t match the set expected bitrate. (Not in ASI mode)
-Output Lock: There are errors on the output modulated signal or the output is disabled.
Reset Fault Log File
Under this menu and history of the faults log file can be reset by using the ENTER key.
Reset Fault History Indicator
Under this set of menus, the Fault History indicator on the Front Panel can be reset. This
indicator latches to red state whenever a fault condition occurs. The indicator can be
reset only by using the Fault History reset function or by cycling power on the unit.
Fault Log
Another function under this menu is to select a log interval when a condition is present.
Fault conditions are logged into a file after the condition is recognized. Subsequent
entries are periodically logged into the log file if a fault condition continues to exist at the
next entry period. This period can be configured to be 5 minutes, 15 minutes, 30
minutes, 1 hour, 12 hours or 1 day or Defeat (Defeat means no log will be created).
Relay 1 Settings
The other set of functions under the Fault Settings menu are the relay mask registers.
These masks allow specific fault conditions to trigger specific relays. Each relay mask is
identical and is defined to allow individual fault conditions to be enabled or disabled.
Otherwise, the relay can be disabled or enabled, regardless of the other settings by
enabling the Master. To change the setting of the relay, press ENTER and use the
up/down arrows to select a condition that will trigger the relay. The error conditions are:
-Input
-Output
-Fan
-Temp
-Volt
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