14
Exigo ENA2060-DC1 Amplifier Installation & Configuration Manual
A100K11689
The 3 buttons in this section have the following functions.
Calibrate
: Click to start the speaker line calibration sequence. The
Channel must be ON (
Enable
must be
clicked) and a proper line load must be attached.
Measure
:
Click to start a manual SLM measurement. The line state must be calibrated as
ok
and
Set
Manual
must be clicked.
Reset Calibration
: Click to clear the calibrated state (state=
uncalibrated
) and remove any line fault
related
System Messages
.
SLM Mode:
Set Continuous
: Click to monitor the speaker line once every xx minutes and report any fault detected.
Set Manual
: Click to have an operator/technician manually execute an SLM operation by clicking the
Measure
button. The manual operation may take up to 15 seconds.
For either SLM mode used, the status and timestamp for the latest measurement will be shown in the
Measured
column and any faults will be visible in the
System Messages
section.
Any faults reported will be removed if subsequent SLM measurements result in an
ok
state or if the
Reset
Calibration
button is clicked.
Channel:
Disable
: Click to switch OFF the amplifier output for that channel.
Enable
: Click to switch ON the amplifier output for that channel.
To calibrate a speaker line:
1. Click the
Enable
button to switch ON amplifier output
2. Click either
Set Continuous
or
Set Manual
button
3. Click the
Calibrate
button
Wait for the calibration state to be updated (approx. 5-10 seconds).
State
will report either
ok
,
open
,
shorted
or
ground fault
.
If the state is
ok
the amplifier’s Speaker Line Monitoring (SLM) feature is ready to operate.
If the state is either
open
,
shorted
or
ground fault
, the line must be corrected and the calibration
procedure must be repeated.
The four benchmarks for the evaluation of line state is Voltage, Current, Phase and Ground Fault.
The values measured on Voltage, Current and Phase will together provide an evaluation of the line state
regarding whether it is Shorted, Open or OK.
Typical SLM values for a 100 m line with 15W speaker load, calibrated values and various Shorted, Open
and Ground Fault situations are as follows:
