Pag. 26
SIRIO 2000T
SIRIO 2000T
SIRIO 2000T
SIRIO 2000T
SIRIO 2000T
Electronic Broadcast Equipment
5.6 OPERATION
Mono Broadcasting, from a monophonic audio source through main mono channel:
1) Wire the “right” (or mono) input connector to the corresponding audio source as described in the "system
connection" section. No connection to the "left" channel input is needed. The signal runs through the
channel processor and is 15-kHz filtered and pre-emphasised.
2) Select the "MODE" command menu (cf. relevant section on the manual) and select "MONO R" operating
mode. Confirm or change also 50 or 75µs pre emphasis as required.
Mono Broadcasting, from a stereophonic audio source through the optional internal stereo-
encoder:
1) Wire both the "left" and “right” input connector to the corresponding audio source as required for stereo
transmission. The audio signals will run through the channel processors and will be 15-kHz filtered and
pre-emphasised on both channels. The internal stereo-encoder will blend the stereo input source to
transmit in mono. In this case the transmitter is already pre set for stereo operation if needed, simply
reversing transmission mode to "stereo", inside the aforementioned.
2) Select the "MODE" command menu and select "MONO L+R" operating mode. Confirm or change also
50 or 75µs preemphasis as required.
Note that it is possible, acting on the internal stereo-encoder, to blend the left and right channel or select
only one of them, without changing the modulation sensitivity. Refer to the stereo-encoder description to do
that.
Mono or Stereo Broadcasting from a Radio-Link Receiver or an External Encoder:
1) In this case, the signal is already multiplexed and pre-emphasised. Use the “MPX” input. The signal
skips the coding and filtering stages and therefore is not pre-emphasised.
2) Select the "MODE" command menu and select the "EXT MPX" operating mode. While it is anyway
advisable to select the proper preemphasis time-constant as required in your country, in this position this
selection is not influent.
Stereo Broadcasting from a stereophonic audio source through the optional internal stereo-
encoder:
1) Wire the XLR-type modulation input connectors, marked “Left” (channel) and “Right” (channel), to the
output of the two channels from the mixer or stereo source. They will be internally 15-kHz filtered and
pre-emphasised signal.
