7974 Oscillator, Comms & PFL module 7-11
Revision J2005-2 J-Type
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The CHECK switch is used in conjunction with the Input Channel Mute switches.
The Input Channel MUTE switch has a secondary function when used in combina-
tion with the CHECK switch. If a channel is muted (MUTE-switch ‘ON’) and the
CHECK switch is pressed, the muted channel is unmuted, but all the other channels
are forced into mute. This allows the originally muted channel to have a ‘solo func-
tion’. Note that this is not a true ‘solo function’, because if more than one channel is
muted, then the operation of the CHECK switch will turn all the muted channels ‘on’
again, as it forces all of the unmuted channels ‘off’.
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Press this button to assign the Oscilator/Pink Noise generator to the LED meter.
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Press this button to assign the PFL I/P level to the LED meter.
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Press this button to assign the PFL Direct O/P level to the LED meter.
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Press this button to assign the talk-back (communications) to the LED meter.
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Assignable 20 segment LED meter for general level indication: Oscillator & Pink
Noise generator, PFL I/P, PFL Direct O/P and Talk-back.
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Rotary switch that allows you to select one of the three types of oscillator source
available. The frequencies available are:
31, 40, 63, 100 and 500Hz
and
1, 3, 5, 10, 12 and 16kHz.
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Press the CHANNELS switch to route the oscillator or the Pink Noise generator to all
channels. The channels also need to have the “~” switch ON.
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Press this button to switch the oscillator/PNG/XLR functions ON.
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