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SX-ST / SX-SV User Manual page 25
7.2 Talkback/SLATE and Oscillator
The SX-ST/SX-VT mixers feature an advanced Talkback/Slate functionalities. Pressing the Talkback/Slate push
button located on the upper right corner of the Master & Monitoring module will send either the external
Communication / Slate microphone signal or the internally generated 1kHz tone to a bus that can be individually
routed and mixed to any of the Mains and the Auxiliaries outputs.
For clarity reason we call it the "Talkback bus". The switch position labelled ←TBK underneath the Mains and
Auxiliaries Master Faders refers to this "Talkback bus" ( see section xx )
NOTE: the Talkback/Slate bus is totally independent of the Communication and Private Line circuitries,
meanwhile they are using the same external microphone
7.2.1 MIC/OSC/FIX switch
This three positions switch selects which of the two possible sources is assigned to the talkback bus:
MIC position: the (external) talkback/slate microphone signal is momentary sent to the talkback bus
when the TBK/Slate button is depressed
OSC position: the internal oscillator generates a 1 kHz sine wave tone which is momentary sent to
talkback bus when the TBK/Slate button is depressed
FIX position: the 1 kHz sine wave tone is permanently sent to the talkback bus.
(for calibration or test procedures).
7.3 PFL/AFL/SOLO and operating mode
These are new features of the SX-ST/SX-VT series that allow users to configure the functionalities and the
operating modes of all the P/A push buttons available on the input channels, the Mains and Aux sends.
PFL position: P/A buttons are configured for PFL ( Pre Fader Listening )
AFL position: P/A buttons are configured for AFL ( After Fader Listening )
SOLO : P/A buttons are configured for SOLO ( true SOLO In Place ) It is used for "soloing" one
(or more) channel "In Place" of the others. When one or more P/A buttons is depressed,
all other channels are muted ! Therefore the red Led above the switch starts flashing,
warning you that the SOLO function is selected.
7.3.1 Normal/Reset switch
Normal : This mode is additive, so one or more P/A buttons can be individually activated.
Reset : This will automatically reset and override any previously activated P/A buttons.
7.4 Power ON/OFF
Turns On and Off the internal DC/DC converter that powers the entire mixer. Please refer to chapter 4.
7.5 Returns 1 to 8
A 25 pin Sub-D "Return" receptacle is available to connect up to 8 "Return" to the SX-ST / SX-VT mixer.
It can be used to monitor and/or assign and re-mix the return of a multi-track recorder or any external lines to
any of the Groups or Auxiliary sends. A row of eight switches is used to individually assign and mix the return
channels to a stereo "Return" bus:
Left position: assign the track to the left channel of the return mix bus
Middle OFF position: the return is not assigned
Right position: assign the track to the right channel of the return mix bus
The switch position labelled →RET underneath the Mains and Aux Master Fader refer to this "Return Bus".
7.5.1 Return Mix master level
The rotary potentiometer underneath the switches adjusts the level of the Return Mix bus between –infinite to
+10dB
7.5.2 P/A RET push button
The P/A push button is used to monitor the return tracks Pre- (PFL) or Post- (AFL) the Return Fader depending
of the P/A mode selector.