Operating Elements; Important Notes - JTS MH-8990 Instruction Manual

Microphone with uhf transmitter
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Please unfold page 3. Then you can always see the
operating elements described.

1 Operating Elements

1 Microphone cartridge
2 Battery status indication
3 Indication of the transmission frequency or the trans-
mission group and the transmission channel (fig. 4)
After switching on the microphone and when
actuating the keys (4 – 6), the display background
illumination will light up. It will automatically be
extinguished approx. 10 s after the last actuation of
a key.
4 Key
for scanning the transmission group/chan-
nel in descending order (in the group adjusting
mode/channel adjusting mode), for decreasing the
frequency (in the frequency adjusting mode) or the
sensitivity (in the sensitivity adjusting mode), and
for deactivating the locking function (in the lock
adjusting mode)
5 Key
for scanning the transmission group/chan-
nel in ascending order (in the group adjusting
mode/channel adjusting mode), for increasing the
frequency (in the frequency adjusting mode) or the
sensitivity (in the sensitivity adjusting mode), and
for activating the locking function (in the lock ad-
justing mode)
6 Key SET
with the microphone not locked:
to call and exit the adjusting modes for transmis-
sion group/channel, frequency, sensitivity, locking
function → chapters 5.1, 5.2, 5.3, and 5.4.1
with the microphone locked:
to call and exit the adjusting mode for the locking
function → chapter 5.4.2
7 Cap for the battery compartment; to insert or
replace the batteries (2 x 1.5 V batteries of size
AA), unscrew the cap
8 Identification ring; can be replaced by one of the
colour-coded rings supplied
9 Power switch
10 Safety cap for covering the switch to be protected
against accidental readjustment
11 Mute switch for short muting ("throat clearing
mode" or "enquiry mode") with subsequent imme-
diate readiness for operation without delay
12 4-pole contact, each on the microphone cartridge
(fig. 2) and on the handle (fig. 3);
prior to assembling the microphone cartridge and
the handle, fit the contacts into each other
8

2 Important Notes

The microphone corresponds to all required directives
of the EU and is therefore marked with
The microphone is suitable for indoor use only. Pro-
tect it against dripping water and splash water, high
air humidity, and heat (admissible ambient tempera-
ture range 0 – 40 °C).
For cleaning only use a dry, soft cloth; never use
chemicals or water.
No guarantee claims for the microphone and no lia-
bility for any resulting personal damage or material
damage will be accepted if the microphone is used
for other purposes than originally intended, if it is not
correctly operated or not repaired in an expert way.
If the microphone is to be put out of operation
definitively, take it to a local recycling plant for
a disposal which is not harmful to the envi-
ronment.
Dead batteries or defective rechargeable batteries
do not belong in the household rubbish; always take
them to a special waste disposal (e. g. collecting con-
tainer at your retailer).
3 Applications
Together with the multifrequency receiver US-1000D
from JTS, this dynamic hand-held microphone with
integrated multifrequency transmitter makes up a wire-
less audio transmission system. For adjusting the
transmission frequency, two modes are available to
ensure maximum flexibility:
1. In the group mode, the wireless microphone oper-
ates with four transmission groups (A – D) to which
16 transmission channels are assigned respec-
tively, i. e. altogether 64 factory-set transmission
channels are available. These channels in the UHF
range of 790 – 814 MHz can be selected as desired.
2. In the frequency mode, the transmission frequency
within the UHF range of 790 – 814 MHz can be se-
lected as desired (frequency spacing 25 kHz).
The microphone is supplied with a microphone case, a
microphone holder, and coloured push-on plastic rings
for identification of the microphone.
3.1 Conformity and approval of the wireless
microphone
The wireless microphone has been tested according
to the relevant standards of the R + TTE directive. The
declaration of conformity can be found in the Internet
on the JTS home page (www.jts-germany.de).
In the Federal Republic of Germany, the frequency
range of 790 – 814 MHz is generally assigned, how-
ever, the general assignment of individual frequencies
of the range is subject to the type of use [see the direc-
tive 91/2005 on the home page of the Bundesnetza-
gentur (Federal Network Agency):
www.bundesnetzagentur.de].
.

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