Adjusting The Transmission Channel; Lock Mode - Monacor International JTS US-902D/5 Manual De Instrucciones

3) Speak/sing into the wireless microphone. The
volume of the audio signal received is shown on the
display via the indication AF (d): the more seg-
ments are displayed, the higher is the volume level.
Adjust the optimum volume on the transmitter
(→ see instruction manual of the transmitter).
Match the output level of the receiving unit to the
input of the subsequent unit with the volume control
(5).
4) With the squelch control (12) – CH. 1 for receiving
unit 1, CH. 2 for receiving unit 2 – adjust the thresh -
old value for the response of the squelch. The fur -
ther the control is turned clockwise, the higher is
the threshold value.
The squelch will mute the receiving unit if during
music intervals high-frequency interference signals
are received of which the level is below the thresh -
old value adjusted. With a higher threshold value,
however, the operating range of the wireless
system will be reduced as the receiving unit will
also be muted if the power of the radio signal of the
microphone falls below the threshold value adjust -
ed. Thus, a higher threshold value may be adjusted
with the squelch control if the reception of the
microphone signal is good. However, with a longer
distance between the transmitter and receiver, a
lower value should be selected.
5) After operation, switch off the receiver with the
switch POWER (3). If the receiver is not used for a
longer period, disconnect the power supply unit
from the mains supply as it will have a low current
consumption even with the receiver switched off.

6.1 Adjusting the transmission channel

1) In the operating panel of the receiving unit press
L M
the key or (6) [for a minimum of 1 s]. On the
display, the indication (b) for the channel adjusting
mode flashes: RX1 (for receiving unit 1) or RX2 (for
receiving unit 2).
2) As long as the indication keeps flashing, the channel
may be selected: With the key
scanned in ascending order, with the key
are scanned in descending order. The 16 channels
are assigned to the following received frequencies:
Channel Frequency
1 518.750 MHz
2 519.375 MHz
3 521.125 MHz
4 522.000 MHz
5 523.250 MHz
6 524.250 MHz
7 524.875 MHz
8 526.000 MHz
All rights reserved by MONACOR
be reproduced in any form or by any means for any commercial use.
L
, the channels are
M
, they
Channel Frequency
9 526.875 MHz
10 528.250 MHz
11 531.250 MHz
12 532.000 MHz
13 533.625 MHz
14 534.750 MHz
15 536.250 MHz
16 541.750 MHz
® INTERNATIONAL GmbH & Co. KG. No part of this instruction manual may
3) Approx. 3 seconds after the last actuation of a key,
the indication RX1 or RX2 will disappear and the
channel adjusting mode is exited.
Note: It is not possible to set both receiving units to the
same channel. The channel selected for one receiving
unit will be automatically skipped during channel
adjustment for the other receiving unit.

6.1.1 Lock mode

(locking the channel selector keys)
To prevent accidental change of the transmission
channels selected, it is possible to activate the lock
mode. With the lock mode activated, it is not possible
to call the channel adjusting mode for any of the two
receiving units.
1) To activate the lock mode, in one of the operating
panels, keep the keys
same time until LOCK (a) is displayed.
2) To deactivate the lock mode, in one of the operating
panels, press the keys
until LOCK disappears.
Note: The lock mode is automatically deactivated each
time the unit is switched on.
7 Specifications
Type of unit: . . . . . . . . . PLL multifrequency receiver
Radio frequency range: 518 – 542 MHz, divided into
Audio frequency range: . 40 – 18 000 Hz
THD: . . . . . . . . . . . . . . < 0.6 %
Dynamic range: . . . . . . > 105 dB
Squelch: . . . . . . . . . . . . pilot tone squelch, noise mute
Audio outputs
2 × XLR: . . . . . . . . . 150 mV/150 Ω (bal.)
1 × 6.3 mm jack: . . . 500 mV/1 kΩ (unbal.)
Ambient temperature: . 0 – 40 °C
Power supply: . . . . . . . via the supplied power
Dimensions
(w/o antennas): . . . . . . 420 × 53 × 230 mm
Weight: . . . . . . . . . . . . 2 kg
Subject to technical modification.
L M
and (6) pressed at the
L M
and at the same time
in diversity technique
16 channels
(→ table, chapter 6.1)
supply unit connected to
230 V~ / 50 Hz
9