Crest Audio NEXSYS - VERSION 3.0, Software Manual

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NexSys v. 3.0 Crest Audio Inc.
8.2 Amplifier Warning Thresholds
The warning thresholds window may be accessed by pressing the Warning Thresholds but-
ton in the Amplifier Setup (
Device | Setup
) dialog. User thermal temperature, IGM and
clipping are user-definable thresholds.
Amplifier Warning Control Window
8.3 Event Monitor and the Event Log
The Event Monitor and Event Log keep a record of all NexSys system events with a date
and time stamp. These events may include hardware faults, actions initiated by the Event
Scheduler, user log on/off and load monitor results. The Event Monitor is a window within
NexSys while the Event Log is a text file that may be saved to disk. Windows word pro-
cessing programs such as Wordpad, Write or Notepad may be used to edit or print the Event
Log.
Opening the Event Monitor
Select
Options | Event Monitor | Open
from the menu to open the event monitor window.
The Event Monitor is always recording events to its internal buffer which can hold approx-
imately 600 events in memory. Since it is a memory based buffer, when the program ends
or when it overflows the recorded events will be cleared. If you want a permanent record
(i.e. saved to disk) of events, then enable the Event Log.
Event Log Setup
The Event Log, once activated, will create a text file which is an exact record of all events
that have taken place since the time the log was activated. You must specify a file name for
the Event Log. Do so by selecting
Options | Event Monitor | File... from the menu. Once
a file is selected, turn on the Event Log by selecting
Options | Event Monitor | File On
from the menu. Similarly, select
Options | Event Monitor | File Off
to turn it off.
User Thermal-- When the heatsink temperature
exceeds this threshold the user thermal fault, is
illuminated. The default is 60°C.
IGM (Instantaneous Gain Modulation) -- When the
amplifier has to attenuate the input signal to prevent hard
clipping. If the number of IGM events occurring in the
time allotted exceeds the threshold then the IGM alert is
illuminated. The default is 10 IGM events in 10
seconds.
Clip -- If the amplifier clips more times than the
threshold within the time allotted, the clip alert is
illuminated. The default is 10 clips in 10 seconds.
Page 8.2 Software Manual