FR2505107A1 - Compact programme control desk for radio transmission - uses switches and relays to select microphone and reproduction equipment and duplex cabling between mixers and aerial - Google Patents

Abstract

The arrangement includes a number of lines entering the control desk comprising microphone inputs from the announcer and from programme sources. Other inputs are provided from disc and tape recorder units and from the announcers studio. Lines are provided from the HF transmission return circuit and to provide loudspeaker drive for the control technician. One output feeds the antenna circuit while another is routed to recording equipment. Switches and relays permit selection of the lines while potentiometers and amplifiers enable the various inputs to be controlled and applied to mixers. A duplex channel allows the announcers to communicate with a correspondent. A connection to the technicians controls allows this channel to be adjusted.

Description

BROADCASTING DESK
The present invention relates to a broadcasting console for a broadcasting station with reduced staff, served for example by a presenter and a technician.

This broadcasting console has a certain number of inputs intended to process several sources of modulation, at least one coming from the microphone of the presenter, one coming from a correspondent line which can be a duplex line, one coming from the local return
HF and one or more from sound and music reproduction devices and a certain number of outputs including at least one to the antenna, one to a correspondent line which can between a duplex line, one to a loudspeaker and / or a cabin helmet for the technician's use, one towards a loudspeaker and / or a helmet for the facilitator's use. In accordance with the invention, the console has means for switching two input lines, chosen from the plurality of input lines, on two internal channels. These two channels are combined at a first mixing point which is connected to the input of a separating amplifier.

 In the "Duplex" position, the modulation which comes from the correspondent is routed on a third channel which is mixed with the first two, at the output of the isolating amplifier. This second mixing point is connected to the input of an antenna starting line amplifier. The first mixing point is directed to the correspondent, who thus receives all the modulations except that which comes from himself.

 In the "Normal" position, the first entry is routed to the third channel. In operator language, the output to the antenna is an output n (all the modulations) while the output to the corresponding duplex is an output (n - 1) (all the modulations minus that of the corresponding match).

 It will be seen in the course of the description that very many switching operations between inputs and outputs as well as numerous tests are possible thanks to the switching equipment of the broadcasting console of the invention. The design of this desk allows it to be served by two people, or even by one person.

 The invention will now be described in detail with reference to the accompanying drawings in which - FIG. 1 is the overall electrical diagram of the broadcasting console of the invention, - FIG. 2 represents the part of the electrical diagram of the desk used for sending on the antenna signals of at most three inputs (normal mode), - Fig. 3 represents the part of the electrical diagram of the desk used for the preparation for the duplex mode and, - FIG. 4 represents the part of the electrical diagram of the desk used in duplex mode.

 The general diagram is more complete than the particular diagrams 8, certain elements having been voluntarily deleted8 in the latter when they are not necessary for understanding. Nevertheless, the correspondence between general scheme and individuals follows without difficulties.

 Referring to FIG. 1, which gives the overall electrical diagram, the broadcasting console includes - fifteen modulation inputs numbered 1 to 15, - eight modulation outputs numbered 21 to 28 and - three internal channels numbered 31 to 33.

 The fifteen inputs include eleven main inputs and four auxiliary inputs.

 The eleven main inputs 1 - 11 break down into - two double inputs for microphone 1, 2 or for premixers 1, 2.

- eight machine or line inputs 3 to 10. For example, inputs 3 and 4 come from record players, inputs 5 and 6 from tape recorders, inputs 7 and 8 from magnetic cassettes and inputs 9 and 10 from lines outside.

- a duplex entrance 11.

The four auxiliary inputs are broken down into
total return HF 12
feedback from the slave mixer 13
extension 14
micro orders 15
The inputs for let 2 microphones are balanced; all other entries are asymmetrical.

 The eight outputs 21-28 break down into: - a main line output 21 to the antenna - a duplex line output 22 - two outputs to loudspeaker, 23 to the cabin loudspeaker and 24 to the loudspeaker studio - two outputs to headphones, 25 to cabin headphones and 26 to studio headphones - one direct order output 27 - one recording output 28.

 Line outputs 21 and 22 are symmetrical; all other outputs are asymmetrical.

 Two of the inputs 1-10 of your choice can be routed on internal channels 31 and 32, for the purpose of mixing. For this purpose, the inputs 1 to 10 are connected through respective potentiometers Pl to PlO, lines 1 01 to 110 and possibly amplifiers such that i 51 has a matrix of keys 2001 to 20010.31 and 2001.32 to 20010 , 32 The key 2003,32 for example puts input 3 and internal channel 32 into communication. The signals of inputs 1 to 10 can therefore be routed to the two internal channels 31 or 32.

 The input 1 (microphone of the animator) and the input 11 (duplex) can be selectively connected to the internal channel 33 under the control of the relay R1 "duplex-normal".

Figs. 1 and 2 represent the main chain in which two inputs chosen from inputs 1 to 10 are connected one to the
internal channel 31, the other to internal channel 32 to be mixed. Furthermore
input 1 (host's microphone) is connected to internal channel 33
by a movable contact 1001 of relay R1 in the rest position.

Channels 31 and 32 respectively include a potentiometer
P15 and an amplifier 201 for channel 31 and a potentio
meter P 1 6 and an amplifier 202 with regard to channel 32. The
outputs of amplifiers 201 and 202 are connected to the mixing point
Has channels 31 and 32. Point A is connected to the main output 21 to
the antenna by amplifiers 204 and 205 and at the duplex line output
22 by amplifier 206. The output of 205 is connected to a VU meter
207 and to the cab speaker 323 by the selector 209, the potentiometer
P 21, amplifier 210 and output 23.

Channel 33 includes a potentiometer P17 and an amplifier
203 whose output is connected to the output of the amplifier 204 in which
channels 31 and 32 are mixed, and at point B where channel 33 is mixed
channels 31 and 32. Pot B is not connected to duplex line output 22
as was point A. So therefore, as we will see about the
Fig. 4, the voice of the correspondent arriving via the duplex input and the contact
1001 of relay RL 1 is not returned to the corresponding through the
exit 22.

Inputs 1 to 10, duplex input 11, total return HF 12
and the main output of the console 21 are connected to a test bar T,
respectively by the keys 2001 tu 200l0, T '20011, T 20012,21, T'
The T bar is connected to the cabin helmet 325 through the potentiometer
P 22 and amplifier 212. This bar is also connected to a vu
meter 213 through an amplifier 214. It is finally connected by selec
studio headphones by selector 215, key 216, potentiometer
P 19, amplifier 220 and output 26 and to the cabin speaker by
the selector 209 the potentiometer P 21, the amplifier 210 and 1; s- output
23.

Fig. 3 relates to the transition from normal to diet
duplex. More practically we want to continue operating the station
sending music (magnetic discs or tapes) to the antenna and the voice of the presenter but we want more than the technician (for
setting the duplex channel) and the presenter can converse with a
corresponding. I1 must therefore connect input 1, that is to say the microphone
host 301 to 22 (duplex output) so that the host can speak
to the correspondent; you must also connect 1 1 (duplex input) to 326
(studio headset) so that the correspondent can speak to the presenter.

Finally, connect the correspondent to the technician to adjust the
duplex track.

The link "microphone of the 30PI animator" corresponding output of
22 "plex is effected by input 1, amplifier 151, line 1 01, selector
221, duplex order key 222, amplifier 206, output 22.

The link 1 1 (duplex input) 326 (studio headphones) is made by input
11, Ply potentiometer, selector 215, key 216, potentiometer P19, amplifier
Ficitor 220, terminal 26, studio headphones 326.

By pressing keys 216 and 222, the technician puts his
command microphone 315 connected to terminal 15 in relation to the horn
laying by output 22 and with studio headphones 326 through output 26.

So we see that if the relay R1 is in the normal position
(contact 1002 in rest position), duplex output 22 can be connected
using selector 221 to
line output (n)
microphone 1
total input HF bone cillator
and if the relay R1 is in duplex position (contact 1002 in position
work), the duplex output 22 can be connected, using the selector
224 to
line output (n)
line output (nl)
totakHF input
line output (nl) + slave microphone.

The slave microphone is connected to input 14. I1 allows you to operate a system
automatic overprint exterior.

 Fig. 4 shows the structure of the broadcasting console in the duplex position.

The internal channels 31 and 32 include, as before, the potentiometers P15 and P16 and the amplifiers 201 and 202 connected to the mixing point A. The internal channel 33 comprises the potentiometer Pi 7 and the amplifier 203 connected to the second mixing point B. The point
B (signal n) is connected to the antenna output 21 and point A (signal (nl)) is connected to the duplex output 22 through the selector 224.

 The duplex input terminal is connected by the selector 215, the potentiometer P 19, the amplifier 220 and the terminal 26 to the studio headphones 326.

The selector 224 allows to send back to the duplex correspondent
the console output (n)
the partial duplex (nl)
the total HF signal
the partial duplex (nl) + the slave microphone 14.

The selector 215 allows to send back to the studio headphones
the console output (n)
the T test bar
the duplex entrance 11
the total HF signal
By actuating the keys 216 and 222, the technician can substitute instructions passed by his order microphone 31 5 for the signals currently received by the studio headset 326 and by the duplex correspondent.

Claims (1)

Claims  1 - Broadcasting console for a broadcasting station with reduced staff, served at most by a presenter and a technician comprising a certain number of inputs including at least one coming from the microphone of the presenter, one coming from a duplex line, one coming from the local return HF and one or more from sound or music reproduction devices and a certain number of outputs including at least one to the antenna, one to a duplex line, one to a loudspeaker and / or a headset use of the technician, one to a loudspeaker and / or a studio headset for the use of the presenter, characterized in that it has means for switching two of the input lines chosen from the plurality of lines d input with two internal channels (31, 32) having a first mixing point (A) connected to both the output to the antenna and to the duplex output, means for switching the input line coming from the microphone from the host or from the input from the duplex line to a third internal channel (33), said internal channel (33) being connected to the line going from the first mixing point (A) to the output to the antenna at a second mixing point (B) from which it follows that the mixing point (B) receiving the incoming duplex signal is not connected to the duplex departure terminal.