shielded cables). Adjust Mic/Line switches as required for incoming signal level.
3.If phantom±powered condenser microphones are used, turn on the FP410E's Phantom Power switch. NOTE: With condenser microphones other than Shure, verify that volt- age and source resistance requirements are compatible.
4.Connect one or both of the FP410E Outputs to the following mixers, amplifiers or recorders. Make certain each Output Mic/Line switch is in the proper position for the desired out- put levels..
5.If an unbalanced aux±level output is needed, connect it to the Tape Out jack.
6.If additional FP410E mixers are to be linked to increase the number of microphone inputs, connect them by means of the Link In and Link Out jacks. Connect the LINK OUT of the first mixer to the LINK IN of the next mixer, and so on. Leave the LINK IN jack of the first mixer and the LINK OUT jack of the last mixer unconnected. NOTE: Jacks are for linking only, not for audio inputs or outputs.
7.If headphone monitoring of the FP410E mixed signal is re- quired, connect mono or stereo headphones to one of the front±panel Phone jacks (1/4±inch or 3.5 mm). Adjust the Phone control knob for the desired loudness (after setting the microphone Channel and Master Gain controls accord- ing to Operation section).
8.To monitor an external signal source, connect it to the rear± panel Mon In jack and pull the Phones control knob outward. Adjust the Phones control and/or the external source level control for the desired loudness.
Operation
1.Turn on the Power switch and set the Manual/Auto switch to Manual.
2.Set the Peak/VU meter to Peak or VU as desired.
3.The 1 kHz internal tone oscillator can be used to help align the following equipment levels (master mixer, amplifier, re- corder, etc.) to the output level of the FP410E. The tone os- cillator is activated by pulling the Master gain control out- ward. Its level at the FP410E output is set by the Master gain control. After setting equipment levels, turn off the tone os- cillator by pushing the Master gain control inward.
4.ªTalkº the microphone connected to the FP410E Channel 1 input, and slowly raise the Channel 1 Gain control to the point where the green LED flickers regularly with normal speech, and the red LED only occasionally with louder speech peaks.
5.Set the other FP410E channel gains in the same manner.
6. Set the Flat (Ð)/Low±Cut (/ ) switches adjacent to each Gain control as required. The low±cut position reduces pick- up of low±frequency room noise.
7.Set the Manual/Auto switch to Auto. In about one second, unused microphone inputs will turn off and the level of an in-
dividual talker's voice will rise above the background noise and reverberation to become clearer and more intelligible.
8.Adjust the FP410E Master Gain control for the desired out- put level, as indicated by the Peak or VU meter, or by the fol- lowing equipment.
9.The FP410E is now ready for operation.
MODIFIABLE FUNCTIONS
The FP410E is ready for automatic or manual operation as supplied. Additional versatility is provided by easily accessible switches visible when the battery compartment is removed.
Note that the switches are all in the ªupº position as supplied; changes are made by moving the switch or switches down- ward. The switch positions are illustrated by a label below the battery compartment (see Figure 2).
VU Meter (Switch No. 1). Change the VU meter, supplied cal- ibrated for +4 dBm = 0 VU, to +8 dBm = 0 VU by moving this switch downward. (This switch does not affect calibration of the LED output level meter in the Peak position.)
Limiter Threshold (Switch Nos. 2, 3). Change the limiter threshold, the output level at which limiter action begins, from the factory±set +16 dBm to either +8 dBm, +4 dBm or 0 dBm output level by moving these switches as shown in Figure 2. Off±Attenuation (Switch No. 4). Change the off±attenua- tion from 13 dB to infinite (∞ ) by moving this switch downward. With the 13 dB setting, an unused microphone is 13 dB lower in level than when it is activated. With the ∞ setting, an unused microphone is completely off.
Hold Time (Switch No. 5). Change the hold time, the duration of time an activated microphone (which is not locked on) re- mains on after the talker stops talking, from 0.4 seconds to 1.0 second by moving this switch downward.
Last Mic Lock±on Defeat (Switch No. 6). The last mic lock±on feature keeps the most recently activated microphone open until a newly activated microphone takes its place. It can be defeated so that all microphones automatically turn off after the hold time by moving this switch downward.
Phantom Power (Switch No. 7). Phantom power for con- denser microphones, normally 14 V, can be changed to 48 V by moving this switch downward. CAUTION: Make certain the
METER |
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0 VU | THRESHOLD | ATTEN | TIME | POWER | |||||||||||||||
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MODIFIABLE FUNCTION SWITCHES
FIGURE 2
3