|Talkback, Listen, Oscillator and
Status Section in
Master Section E2
The Status Section controls the Solo Logic and the PFL System, status functions and the Mute Groups. In addition, the Talkback Module TB-E includes the oscillator
go to Talkback and Listen Page
There are 5 status switches and indicators integrated in the TB-E talkback module. Besides the main switches of the mute groups A and B, there is the ALL-TAPE switch that controls the INP switches of the inline inputs modules. If this switch is pressed, all the active INP switches are disabled, that causes the tape chain inputs of these channels to switch over to the tape outputs. This function can be limited to certain ranges of the console. It is possible to switch only channels, that are attached to tracks of a multitrack system.
The SOLO OFF switch and its belonging LED indicate the state of the mixing console's solo system. If Solo is active, the color of the LED is red. If Solo Off is activated, the entire solo system of the console blocked. This is indicated by green color. The solo off function does not reset the solo system, but it makes it possible to toggle between the normal state and the solo state to compare a set of channels in solo with the entire mix without the need to release and press many solo switches at a time. In addition this switch can be used to block the solo system in a live production, when switching a channel into solo mode by mistake would skip the entire session.
The PFL OFF switch operates similar to the Solo Off switch, but it affects the PFL system, of course. The state of the PFL system is indicated by green color if one or more PFL switches are active. If the switch is pressed, the entire PFL system ist blocked. This is indicated by red color. Of course, it is possible to toggle between a set of PFL channels and the normal control room source. The block function disables only the automatic switching of the PFL audio signal to the control room monitors and/or the main peak meter. The PFL audio master is still available on the patch bay and on the connector panel. The PFL-OFF switch disables the listen function too.
The Oscillator is a stable function generator. The frequency range from 20 Hz to 20 kHz is divided into 3 decade ranges; 20 to 200 Hz, 200 Hz to 2 kHz and 2 kHz to 20 kHz. There are three pushbutton for the selection of the frequency range. The frequency control pot determines the actual frequency in the particular range. The OFF switch disables the oscillator and disconnects the circuitry from power. A LED indicates that the oscillator is on.
The output level can be adjusted by the oscillator level pot from off to approx. + 20 dBu. The frequency and the output level are normally calibrated. Depending on the selected range, the oscillator works on 100 Hz, 1 kHz or 10 kHz. The 1 kHz frequency is internally calibrated for high accuracy. The tolerance of the 100 Hz and the 10 kHz signal is 5 %. The frequency control pot can be activated by the VAR switch.
When the oscialltor is switched on, its output is always available on the patch bay and the connector panel as well. Besides, there are three switches for the oscillator routing. MIX routs the oscillator output to both the channels of the main stereo master mix. MT feeds the signal to all the 24 routing busses in parallel. In both cases the console is set into solo mode to prevent any damange to speakers, headphones and to the musicians as well. The AUX switch assigns the oscillator output to the switches AUX1 to AUX6 of the talkback routing section. If the oscillator is on, the output of the oscillator is routed to the selected aux busses instead of the talkback signal. This function allows the calibration of effect devices that are connected to the auxilliary sends. A jumper in the playback sections of the MON-E modules determines, if the the headphone and studio speaker outputs are automatically disabled, when the oscillator is on.