4) If not used for a longer period of time (e. g. for more
than one week), the battery should be taken out of
microphone. Thus the microphone will not be
damaged in case the battery should leak.
5.2 Receiver
1) Connect the plug-in power supply (included in the
delivery) to the power supply jack DC IN (6).
2) Plug the plug-in power supply into a mains socket
(230 V~/50 Hz).
3) The receiver can also be supplied with any other
12 V DC power source of at least 300 mA current
rating, e. g. car battery or other power supply. For
the connection a DC power plug 5.0/2.1 mm (out-
side/inside diameters) is required. The positive
pole must be at the centre pin.
6 Operation
1) Connect the AUDIO OUTPUT of the receiver (5) to
a line input (e. g. for CD players, tuners, or tape
decks) of a mixer or amplifier. Switch on the ampli-
fier resp. open the corresponding mixer control only
when the entire microphone system is switched on.
2) Place the antenna (8) in a vertical position and
extract it to its full extent.
3) Switch on the receiver with the volume control
VOLUME (4). The POWER LED (1) lights.
4) Leave the microphone switched off. Adjust the
muting threshold of the interference suppression.
The green reception LED RF (2) must not light. If it
lights there are reception interferences. In order to
suppress these interferences, use a small screw-
driver and turn the control SQUELCH (7) at the bot-
tom of the device anti-clockwise until the green LED
RF does not light any longer. Do not turn the control
switch any further, otherwise the microphone signal
may be suppressed as well.
5) Switch on the microphone with the switch (11). The
power LED (13) lights. If it remains dark, a new bat-
tery must be inserted. For audio transmission slide
the switch (12) to the uppermost position. The
microphone is mute in the medium position, i. e. the
transmitter operates but the audio signal is mute.
6) When the microphone is switched on (mute or ON)
the reception LED RF (2) must light. If the display
remains dark the reception is too weak.
a Is the microphone battery exhausted?
b Is the distance microphone - receiver too great
(max. approx. 30 m)?
c Is the reception disturbed e. g. by objects in the
transmission area?
d Can the reception be improved by turning the
antenna?
e Is a reception possible when turning the control
SQUELCH (7) at the bottom of the device anti-
clockwise?
7) Switch on the amplifier or slide the fader of the re-
spective mixer control upwards. Adjust the output
volume with the control VOLUME (4) to the line
input of the subsequent amplifier or mixer.
8) When the microphone system is overdriven be-
cause the volume at the microphone is too high, the
red indicator PEAK (3) lights [the overdrive indicator
PEAK is independent of the volume control (4)].
The volume of the sound source has to be reduced
or the distance between microphone and sound
source has to be increased.
If the volume at the microphone is low a poor
S/N ratio is obtained. The volume of the sound
source has to be be increased or the distance bet-
ween microphone and sound source has to be redu-
ced.
9) After operation the microphone must be switched
off as well, otherwise the batteries will soon be
exhausted. Disconnect the mains plug if the micro-
phone system is not to be used for a longer period
of time, since the system has a low power con-
sumption even when switched off.
7 Specifications
Carrier frequency
TXS-100SET: . . . . . . . . . . 175.00 MHz
TXS-102SET: . . . . . . . . . . 195.25 MHz
TXS-103SET: . . . . . . . . . . 197.10 MHz
Transmission power: . . . . . . 15 mW
Frequency stability: . . . . . . . ±0.005 %/25 °C,
Modulation: . . . . . . . . . . . . . FM, ±40 kHz
RF S/N ratio: . . . . . . . . . . . . > 90 dB
Audio range: . . . . . . . . . . . . 50–15 000 Hz, ±3 dB
Dynamic range: . . . . . . . . . . 100 dB
THD: . . . . . . . . . . . . . . . . . . < 1 %
Audio output: . . . . . . . . . . . . 0–300 mV/10 kΩ
Operating range: . . . . . . . . . approx. 30 m
Ambient temperature: . . . . . 0–40 °C
Power supply
Microphone: . . . . . . . . . . . 9 V battery,
Receiver: . . . . . . . . . . . . . 12–18 V /300 mA with
Dimensions (W x H x D)
Microphone: . . . . . . . . . . . Ø 54/36 mm x 245 mm
Receiver: . . . . . . . . . . . . . 150 x 43 x 100 mm
Plug-in power supply: . . . . 52 x 66.5 x 41 mm
Weight
Microphone (w/o battery): 220 g
Receiver: . . . . . . . . . . . . . 240 g
Plug-in power supply: . . . . 250 g
According to the manufacturer.
Subject to technical change.
quartz-controlled
lifetime 6–8 hours
230 V~/50 Hz/6 VA
plug-in power supply
(included in the deli-
very)
GB
7