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46.
12345 67 8 (Group Mixing Bus Assign)
These locking switches assign the Talkback or oscillator signal to group mixing
busses 1 through 8.
47. AUX 1 - 6 (Assign)
These six locking switches assign the TB/OSC signal directly to the correspondingly
numbered auxiliary mixing busses.
48. ST (Stereo)
This locking switch assigns the TB/OSC output directly to stereo mixing buss.
49. TB OUT
This locking switch turns the TB OUT XLR connector on and off. It affects only the output
of the talkback system which appears at the TB OUT connector (the output being derived
from the TB input when the TALKBACK ON switch is pressed, or otherwise from the
oscillator). This switch does not affect any TB/OSC signal which may be switch-assigned
to group mixing busses 1-8, the stereo bus or the six aux mixing busses.
50. OSC OUT
This locking switch turns the OSC OUT XLR connector on and off. It affects only the
output of the oscillator that appears at this connector, and does not affect any oscillator
signal which may be switch-assigned to group mixing busses 1-8, the stereo bus or the
six aux mixing busses.
51. PINK 10K 1K 100 OFF
These 5 interlocking switches set the oscillator to 100 Hz, 1 kHz or 10 kHz operation.
They also permit selection of a pink noise source, or turn off the oscillator/noise source
altogether.
NOTE:
To prevent any possible leakage into mixing busses, the osoillator should be shut
OFF when not actually in use.
52. OSC LEVEL
This rotary control adjusts the oscillator output level applied to the OSC OUT connector
as well as any mixing busses to which the signal may be assigned. This control does
not affect the Talkback level.
53. (TB INPUT)
This XLR-3 connector accepts a low-Z microphone or a line level signal, depending
onthe settings of the controls below it. This input is NOT phantom powered. Signal from
this input is assigned to the TB OUT connector and to the various mixing busses by
means of the assignment switches in the upper portion of this module [46], [48], [47],
[49].
54. LEVEL (TB Input)
This rotary control adjusts the signal level after the talkback preamplifier, thereby
affecting the sensitivity of the TB input whether it is set for a mic or line source.
This
control affects the TB level applied to any busses and to the TB OUT connector; it does
not affect the oscillator level in any way.
2-13
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