AKG WMS 400 User Manual download pdf (Page 32)

WMS 400 V 1.10

3.9.3 Bodypack Transmitter:

Connecting a

Microphone/Instrument and

Setting Input Gain

Important!

Refer to fig. 12 on page iii.

3.10 Before the Soundcheck

Important!

Refer to fig. 1 on page ii.

3.10.1 Finding Dead Spots

Diagram 8: Using the Rehearsal

function to find dead spots

(dropouts).

The PT 400 bodypack transmitter has been designed primarily for use with "L" type MicroMic Series

microphones from AKG (see section 2.7). If you wish to connect other microphones from AKG or other

manufacturers to the PT 400, please note that you may have to rewire the existing connector of your

microphone or replace it with a 3-pin mini XLR connector.

Audio input pinout:

Pin 1: shield

Pin 2: audio (inphase)

Pin 3: audio

A positive supply voltage of 6 volts for condenser microphones is available on pin 3.

Please note that AKG cannot guarantee that the PT 400 bodypack transmitter will work perfectly

with products from other manufacturers and any damage that may result from such use is not cov-

ered by the AKG warranty scheme.

1. Plug the mini XLR connector (1) on the cable of your microphone or on the MKG L instrument cable

(2) into the audio input connector (3) on the bodypack transmitter.

2. Set the ON-MUTE/PRG-OFF switch (4) to "ON".

3. Switch power to the receiver on.

4. Open the battery compartment on the bodypack transmitter.

5. Speak or sing into the microphone or play a few bars on your instrument (the louder the better).

6. Use the integrated screwdriver (6) on the battery compartment cover (5) to set the gain control (7) to

the point where the signal will optimally drive the receiver's audio section (green AF OK LED lit, Audio

bargraph indicating 0 dB on peaks).

7. Close the battery compartment.

1. Activate the Rehearsal function on the receiver referring to section 3.10.1 below.

2. Move the transmitter around the area where you will use the system to check the area for "dead

spots", i.e., places where the field strength seems to drop and reception deteriorates.

If you find any dead spots, try to eliminate them by repositioning the receiver or the antennas. If this

does not help, avoid the dead spots.

3. If the received signal is noisy, set the squelch threshold to a level where the noise will stop. (Refer to

section 3.10.2.)

Never set the squelch threshold any higher than absolutely necessary. The higher the squelch

threshold (-80 dB = max., -100 dB = min.), the lower the sensitivity of the receiver and thus the

usable range between transmitter and receiver.

4. The RF bargraph on the receiver extinguishing and the red RF MUTE LED (5) coming on mean that no

signal is being received or the squelch is active.

Switch the transmitter ON, move closer to the receiver, or set the squelch threshold to the point that

the green RF OK LED (5) will illuminate and the RF bargraph reappear.

The Rehearsal function detects a maximum of six dropouts and records the time each dropout occurred,

the minimum field strength at each antenna, and the maximum audio level. You can view the list of results

after the recording has stopped.

Move the transmitter around the area

where you will use the system.

Up to six dropouts are recorded.

You can stop the recording at any time

by pressing o briefly.

D1: The recording has been completed,

the display indicates dropout no. 1.

MIN RF: The recording has been com-

pleted, no dropout has been detected.

The display indicates the minimum RF

level measured.

OVFL: The recording has been stopped

automatically because six dropouts

have been detected already or because

the available time (16 minutes) has

elapsed.

REHEAR

RHSL

REHEAR

RHSL

List of results

>EXIT<

RHSL

>EXIT<

"D1 124"

RHSL

OVFL

RHSL

MIN RF

RHSL

>START<

RHSL

RECORD

RHSL

3 Setting Up

WMS 400 final_5.0 18.05.2005 12:38 Uhr Seite 26

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AKG WMS 400 User Manual Page 32

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