EA 946 MODULATION GUARD VERSION 2.10; INSTRUCTIONS FOR USE
EELA AUDIO Parmentierweg 3 5657 EH EINDHOVEN THE NETHERLANDS
Page 8
SOFTWARE SETTINGS/ITEMS.
Functional options:
In the
Error detection
box you can determine on which fault situations the
EA946
should react. With
Audio error
selected, you want the
EA946
to react when the level
of the audio signal comes below a selected minimum level. The External input can be
used for two different facilities, e.g. Extern
Error detect
and
Inhibit unit
. When
selecting the external input to become ‘Inhibit unit’ control, this input can be used to
disable the guarding function of the unit e.g. by a time-clock. When this external input is
set to have an external ‘Error detect’ function, this control input can be used to activate
the alarm as if there was no audio present e.g. to be connected to the ‘no carrier’ output
of a transmitter. When the external input is not used, we recommend to select the ‘No
function’ possibility.
Unit :
In the ‘Unit’ box you can set the unit number. The unit number is in case of an
alarm sent over the telephone line by a coresponding amount of DTMF tones at the
beginning of the telephone connection. The amount of tones allows you to tell the
differrence between units when more modulation guards are in use.
Detection Level:
Here you can select out of 4 levels (threshold) of input level at which
the
EA946
should come into operation.
Ext (Source) Control:
The character of the control output used as START & STOP
signals can be set to be either PULSE or CONTINUOUS closing contacts.
Miscellaneous:
In the miscellaneous box you can set if the internal buzzer should
operate in an ALARM situation. Also you have to set if in an ALARM situation the audio
feed to the transmitter has to be automatically diverted to the other AUX source or not.
AlarmTime:
To prevent the unit from reacting on any pause in the broadcasted signal a
certain period can be set for a "silence" to be allowed before the system comes into
operation after detecting a "ERROR". The time can be anywhere between 5 and 255
seconds. You can make a selection by clicking on the arrow pointing downwards and
selecting the required setting from the list which appeares.
The
EA946
starts count-down to the Alarm time when a fault occurs. If this occurring
(intermitting)fault disappeares before the Alarm-time has passed, the countdown at the
next occurring fault will start from scratch.
ActionTime:
In the Action time box a time has to be set to determine with what delay
after the Alarm-time the
EA946
sends out the service calls after an ‘ERROR’ has
occurred. The time can be anywhere between 5 and 255 seconds. You can make a
selection by clicking on the arrow pointing downwards and selecting the required
setting from the list which appeares. The elapsed time before the service call goes out
by the
EA946
thus equals the Alarm Time + Action Time.
