Operating Elements And Connections; Safety Notes; Applications; Setting The Transmission Channel - IMG STAGELINE TXS-646 Mode D'emploi

All operating elements and connections de -
GB
scribed can be found on the fold-out page 3.
1 Operating Elements
and Connections
1 Display to indicate
1. the channel group (GROUP 00 – 09)
2. the channel (CHANNEL 00 – 99)
3. the signal level adjusted (VOL 00 – 63) at
which the microphone signal of the corre-
sponding receiving part is mixed to the jack
LINE OUT (13)
4. the RF signal strength (
2 LEDs ANTENNA A and B: to indicate which
of the two antennas receives the more pow-
erful radio signal
3 Signal LED AF: lights up if the microphone
signal received exceeds a certain level
4 IR LED for sending IR signals to set the chan-
nel of the wireless microphone / pocket trans-
mitter
5 Button ACT
1. For sending IR signals to set the channel of
the wireless microphone / pocket transmit-
ter, briefly press the button.
2. For automatic search of a free receiving
channel, press the button until the outer
display elements of the numerals for
GROUP and CHANNEL start moving
clockwise on the display
6 Button SET: To change the channel group,
the channel number or the mixing ratio of the
microphone signals at the jack LINE OUT
(13), press the button SET repeatedly until
the corresponding numerals start flashing on
the display (1). While the numerals keep
flashing, make the setting with the but-
tons and (7).
7 Buttons and to set the channel group,
the channel number and the mixing ratio of
the microphone signals
8 Receiving antennas A and B
9 POWER switch
1. To switch on, press the button until the dis-
plays light up.
2. To switch off, press the button until the dis-
plays show OFF.
10 Antenna jacks
11 Control SQUELCH to set the threshold for
interference suppression (for each receiving
part 1 – 4)
12 XLR audio output for connection to a micro-
phone input (for each receiving part 1 – 4)
13 Audio output (6.3 mm jack) for the mixing sig-
nal of the receiving parts 1 – 4 to connect a
line input
14 Power supply jack to connect the power sup-
ply unit provided
6

2 Safety Notes

The units (receiver and power supply unit) corre-
spond to all relevant directives of the EU and are
therefore marked with
WARNING The power supply unit uses dan-
Please observe the following items in any case:
G
The units are suitable for indoor use only. Pro-
tect them against dripping water and splash
water, high air humidity and heat (admissible
)
ambient temperature range 0 – 40 °C).
G
Do not place any vessel filled with liquid on the
units, e. g. a drinking glass.
G
Do not operate the receiver and immediately
disconnect the power supply unit from the
socket
1. if the receiver or the power supply unit is
visibly damaged,
2. if a defect might have occurred after a unit
was dropped or suffered a similar accident,
3. if malfunctions occur.
In any case the units must be repaired by
skilled personnel.
G
For cleaning only use a dry, soft cloth; never
use water or chemicals.
G
No guarantee claims for the units and no lia-
bility for any resulting personal damage or
material damage will be accepted if the units
are used for other purposes than originally
intended, if they are not correctly connected or
operated, or if they are not repaired in an
expert way.
If the units are to be put out of operation
definitively, take them to a local recy-
cling plant for a disposal which is not
harmful to the environment.

3 Applications

In combination with four wireless microphones,
the multi-frequency receiver TXS-646 provides
a four-channel wireless audio transmission
system ideally suited for musicians and live
appli cations on stage. The True Diversity*
receiver operates in the UHF frequency range of
672.000 – 696.975 MHz. The frequency for
audio transmission is adjustable within this
range (frequency spacing: 25 kHz).
The following wireless microphones from
"img Stage Line" are suitable for combination
with the TXS-646:
TXS-606HT Order No. 25.3540
Hand-held microphone with integrated multi-
frequency transmitter
TXS-606LT Order No. 25.3550
Multi-frequency pocket transmitter with tie clip
microphone
Frequency setting via the ACT function (auto-
matic channel targeting) is a most convenient
feature: Simply press a button to set the wireless
microphone / the pocket transmitter via IR signal
to the channel selected on the receiver.
* True Diversity technology
The signal coming from the wireless microphone /
pocket transmitter is received by two antennas and
amplified in two separate receiving parts. The signal
offering the best reception quality is then processed.
.
gerous mains voltage. Leave ser -
vicing to skilled personnel only.
Inexpert handling of the unit may
result in electric shock.
4 Operation
4.1 Setting up, connecting and
switching on the receiver
1) The receiver is designed for installation into a
rack (482 mm /19"); however, it is also suit-
able as a stand-alone table-top unit. For rack
installation, one rack space is required (rack
space = 44.45 mm).
2) Connect the receiving antennas (8) provided
to the antenna jacks ANT A and ANT B (10).
To lock the antennas, turn the knurled ring of
the plug clockwise to the stop. Then set the
antennas to a vertical position.
To remove the antennas later, turn the ring
counter-clockwise first to unlock it.
To install the antennas outside the rack
(e. g. if there is not enough space or if other
units in the rack shield the radio waves), use
the mounting brackets TXS-100BNC from
"img Stage Line". The brackets are provided
with a 1 m connection cable.
3) It is possible to connect the XLR jacks MIC
OUT (12) of the four receiving parts to four
microphone inputs of a mixer or amplifier.
As an alternative, feed the mixed signal of
the four receiving parts from the jack LINE
OUT (13) to a line input. To set the mixing ratio
of the four microphone signals see chapter 4.3.
4) Connect the power supply unit provided to the
power supply jack (14) and to a mains socket
(230 V~ / 50 Hz).
5) To switch on the receiver, press the button
POWER (9) until the displays (1) light up.
To switch off later, press the button until
the displays show OFF. If the receiver is not in
use for a longer period of time, disconnect the
power supply unit of the receiver from the
mains socket; even with the receiver switched
off, it has a low power consumption.
6) Make any further settings separately on each
of the four receiving parts (RECEIVER 1 – 4),
one after the other.

4.2 Setting the transmission channel

To set a free transmission channel, either use
the automatic search or the manual setting.
Then simply press a button to set the wireless
microphone / the pocket transmitter via IR signal
to the same channel.
1) For automatic search for a free receiving
channel, press the button ACT (5) until the
outer display elements of the numerals for
GROUP and CHANNEL start moving clock-
wise on the display. After a while, the display
shows the number of the channel found. The
corresponding frequencies can be found in
the table on page 16.
2) For manual setting of a certain transmission
frequency, find the corresponding channel
group and channel number in the table on
page 16.
a) Press the button SET (6) once so that the
numerals for GROUP start flashing on the
display.
b) While the numerals keep flashing (a few
seconds after pressing the button SET,
or ), set the channel group with the
button or (7).
Note: If the numerals stop flashing before you have
set the group, press the button SET once again.