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INTERNAL SWITCHES AND CONTROLS (Cont.) | ||||||
Note: Bold type indicates the Factory setting. |
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| DIP SWITCH | POSITION | FUNCTION |
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1 | LIM LINK | ON | Left and Right limiters act in tandem. If limiter thresholds are set differently, limiter action |
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| is determined by the lower threshold setting. |
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| OFF | Left and Right limiters act independently. |
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2 | LIM RELEASE R | SHORT | Right limiter release time constant is 0.1 second. Use for speech. |
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| LONG | Right limiter release time constant is 1 second. Use for music. |
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3 | LIM RELEASE L | SHORT | Left limiter release time constant is 0.1 second. Use for speech. |
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| LONG | Left limiter release time constant is 1 second. Use for music. |
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4 | MON DEFEAT R | OFF | When front panel Monitor switch is activated, Monitor In signal is heard in Right head- |
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| phone. |
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| ON | When front panel Monitor switch is activated, Monitor In signal is not heard in Right head- |
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| phone. Mixer audio remains in Right headphone. |
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5 | MON DEFEAT L | OFF | When front panel Monitor switch is activated, Monitor In signal is heard in Left headphone. |
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| ON | When front panel Monitor switch is activated, Monitor In signal is not heard in Left head- |
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| phone. Mixer audio remains in Left headphone. |
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6 |
| ON | Inserts slate tone and slate microphone into circuit before the Master gain control (pre– |
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| master). Slate level is controlled by Master. |
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| OFF | Removes slate tone/slate microphone from |
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| ON | Inserts slate tone and slate microphone into FP33 circuit after the Master gain control |
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| OFF | Removes slate tone and slate microphone from FP33 |
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8 | SLATE TONE | ON | Slate tone (400 Hz) sounds for one second when front panel slate button is pushed. Slate |
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| microphone also activates. |
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| OFF | Slate tone does not sound when slate button is pushed. Slate microphone does activate. |
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9 | METER LAMP | TOGGLED | Lamp turns on/off when front panel lamp switch is toggled. Automatic timed turnoff of lamp |
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| will not occur. |
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| TIMED | Lamp turns on/off when front panel lamp switch is activated. If not manually switched off, |
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| lamp will automatically turn off after 10 seconds to conserve battery life. |
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10 | PRESENCE LEDs | ON | Input LEDs illuminate green to indicate signal presence and relative level. |
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| OFF | Input LEDs do not illuminate green. Input LEDs will still illuminate red to indicate 6 dB be- |
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| fore clipping. |
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11 | 12 V OR 48 V PHANTOM | 12V | Provides 12 Vdc phantom power if selected for channel input. |
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| 48V | Provides 48 Vdc phantom power if selected for channel input. |
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12 | MS MATRIX FOR | ON | Inserts MS decoding matrix into headphone circuit. User can monitor in stereo while allow- |
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| HEADPHONES |
| ing separate Mic and Side signals to pass through the FP33. |
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| OFF | Removes MS decoding matrix from headphone circuit. |
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POWERING THE FP33 MIXER
The FP33 can be powered by a
External Power Supplied | Internal Batteries |
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11.4 Vdc to 30 Vdc | OFF (200 ΠA current at 18 V) |
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<11.4 Vdc | ON (Full power for the FP33 is sup- |
| plied by the higher voltage source) |
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BATTERY LIFE
The FP33 is designed for low current consumption. Under typical conditions (+4 dBm into 600 : in continuous use and no
Mixer Operation | Battery | Battery |
| Current | Life |
| (mA) | (hours)* |
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(A) Idle, no signal | 41 | 9 |
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(B) As in (A) with +4 dBm continuous | 46 | 7.8 |
output |
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(C) As in (B) with three Shure SM81 mi- | 50 | 7.5 |
crophones at 12 V phantom power |
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(D) As in (B) with three Shure SM81 mi- | 57 | 6.0 |
crophones at 48 V phantom power |
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(E) As in (B) with 63 : headphones | 50 | 6.9 |
driven moderately loud (Sony MDRV6) |
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(F) As in (B) with meter illumination | 63 | 5.5 |
continuously on |
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*Until Power LED begins to flash, and allowing 30 minutes to replace batteries.
Note: Momentary use of headphones or meter illumina- tion will not appreciably affect battery life.
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