Yamaha PM5000 Owner's Manual - Page 41
Oscillator/Talkback Signal Output, INPUT connector input level = -50 dB. When using - power meter
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Oscillator and Talkback Section Oscillator/Talkback Signal Output The oscillator is capable of producing continuous or burst-output pink noise, or sine wave signals from 20 Hz through 20 kHz. Engage the oscillator section [PINK] switch to generate pink noise. If the [SWEEP/BURST] switch is off the pink noise produced will be continuous. When the [SWEEP/BURST] switch is engaged the control immediately above it can be used to set the burst-output interval from 1 second through 20 seconds. The length of each pink noise burst is fixed at 200 milliseconds. To generate sine-wave signals disengage the [PINK] switch. To select the sine-wave frequency, use the [10k], [1k], or [100] frequency selector. If the [SWEEP/ BURST] switch is engaged the control immediately above it can be used to vary the selected frequency from 0.2x through 2x (in 120 steps), thus making the entire audible spectrum from 20 Hz through 20 kHz available. When the [OSC ON] switch is engaged the oscillator signal is output at the level determined by the oscillator [LEVEL] control (make sure the talkback section [ON] switch is disengaged). NOTE The current oscillator setting - sine wave frequency or burst interval - can also be visually confirmed via the digital control section message display when no other message is being displayed. To deliver a talkback signal via the TB bus an appropriate microphone must be plugged into the INPUT connector (input level = -50 dB). When using a phantom-powered microphone engage the [+48V] switch to supply +48-volt phantom power to the INPUT connector. The [ ] switch engages an 80-Hz highpass filter for the microphone connected to the INPUT connector to cut out unwanted low-frequency noise. When the talkback [ON] switch is engaged the talkback signal is output at the level determined by the talkback [LEVEL] control. NOTE In order to supply phantom power to the talkback INPUT connector the rear-panel [+48V MASTER] switch must be turned on. When the [+48V MASTER] switch is on the +48V MASTER ON indicator on the left side of the meter bridge will light. 39
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