ECRESO FM 100/300 W, user manual– 06/2015
Page 34
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SFN
(CONF.SFN.STATE) – read/write *
Enable or disable the SFN function with this parameter. The SFN (Single Frequency Network)
is a broadcast network
where several transmitters simultaneously transmit the same signal over the same frequency channel. It
uses the
10 MHz input to synchronize the RF subcarrier and the modulation. Before enabling SFN, it is essential to conduct a
study to determine its feasibility; if feasible, SNF requires a proper installation. Use AES inputs and adjust the
transmitter power accordingly.
Off/On
SFN DELAY
(CONF.SFN.DELAY) – read/write *
With this parameter set the SFN delay. The SFN delay makes it possible to compensate audio transmit time in the
network. This delay has to be set in the field depending on readings computed in the coverage area. It is set in 1.25 µs
increments. The actual delay is then read and an offset between the set delay and the read delay leads to an SFN
alarm (loss of synchronization).
From 0 to 5000000.00 µs
10 MHz OPERATION
(CONF.10MOPE) - read/write *
With this parameter set the operating mode of the 10 MHz input. In manual mode, the transmitter uses the internal
10 MHz reference. In auto mode, it uses an external 10 MHz reference when one is detected; when none is detected,
it switches back to the internal 10 MHz reference.
Manu/Auto
5.4.
Input switch parameters
These parameters are available as:
Front panel
INPUT SWITCH menu
see section 6.3.6
Serial commands
INPUT and CONF
see sections 7.2.6 and 7.2.4
Engi PC application
Input Switch page
see section 8.2.2
Embedded web site
Transmitter/Input Select pages
see section 9.4.4
Serial commands and the web site are managed differently: the PRIO parameter for each input sets the selection
order for the various audio sources.
MODE
With this parameter, choose whether audio source selection is done manually or automatically. In manual mode, the
user selected audio source is used regardless of the state of the audio source. In auto mode, the effective audio
source depends directly on the switching configuration and on the channels selected as Main or as Backup (1, 2 or 3).
MANU or AUTO
MAIN
With this parameter, select the main audio source.
LINE1, LINE2, MPX1, MPX2, PLAYER or GENE
