JTS US-936K User manual

US-936K/Mh-936K
Instruction Manual
www.jts.com.tw
59508-047-01
PROFESSIONAL CO., LTD
Dual Channel Wide Bandwindth Wireless System

ank you for choosing the JTS wireless system. In order to obtain the best eciency from the system,
you are recommended to take a few minutes to read this instruction manual carefully.
1. Important Caution
2. Features
3. Specication
3-1 UHF PLL Dual Channel Diversity Receiver // US-936K
3-2 UHF PLL Handheld Transmitter // Mh-936K
4. Part Identication & Accessories
4-1 UHF PLL Dual Channel Diversity Receiver // US-936K
4-2 UHF PLL Handheld Transmitter // Mh-936K
4-3 Accessories
5. Connection
6. Operation
7. Recommendation
8. Important Notice
INDEX
1
1
2
2
2
3
3
6
6
7
8
13
14

1
2
1. Important Caution
2. Features
Always makes all connections before plugging the unit into an AC power outlet.•
Do not leave the device in a place neither with high temperature nor high humidity.•
Always do not handle the power cord with wet hands!•
Keep the devices away from re and heat sources.•
Makes sure receiver/transmier are in the same preset channel or frequency.•
3. Specication
3-1 UHF PLL Dual Channel Diversity Receiver // US-936K
3-2 UHF PLL Handheld Transmitter // Mh-936K
Frequency Preparation......
Carrier Frequency Range
S/N Ratio...................................
T.H.D..............................................
Display...........................................
Display Contents...................
Controls.......................................
Audio Output Level.............
AF Output Impedance.......
Operation Voltage.................
Output Connector................
Dimension(m/m).................
PLL Synthesized Control
36MHz within 502~960 MHz
>105dB
<0.6%@1KHz
LCD/LED
Channel, Antenna A/B, Mute Display, RF/AF Level Meter,
Low baery, SQ
Power On/O, Frequency Up/Down, Volume, SQ,
Preeset channel 001~225
-12dB
600Ω
12-18 VDC, 500mA
3 unbalanced Ø6.3mm phone jack
210mm(W) * 40mm(H) * 172mm(D)
Frequency Preparation...........
Carrier Frequency Range.....
RF Outputs....................................
Stability...............................................
Frequency Deviation...............
LCD Display..................................
Controls............................................
Spurious Emissions...................
Audio Frequency Response
Baery.................................................
PLL Synthesized Control
502~960 MHz
Lo:3mW , Hi:10mW
(Depend on Local Regulation)
±10KHz
±48KHz
Preset channel, Baery Fuel Gauge, Frequency
Power On/O, Frequency Up/Down,
Lock-on Mode,Preset channel,A or B channel
select, RF outputs adjust, Gain control
<-50 dBC
50~16,000 Hz
UM3, AA 1.5V*2
At super-wide band of 36 MHz, specially intended for exquisite KTV rooms and classrooms
•
Operation functions designed to be user-friendly•
Preset with 225 pairs of channels•
Unprecedented 001-225 coded reception/transmission channels•
Dual channel (receiving) set with one key•
All-new D-36K highly sensitivity and anti-feedback capsule•
Adjustable squelch level at front panel•

3
4
4. Parts Identication & Accessories
4-1 UHF PLL Dual Channel Diversity Receiver // US-936K
: RF Level: display the strength of radio signal
: AF Level: display the strength of audio signal
: Low baery indicator: display the low baery status of its transmier
: Channel A on Right side; Channel B on Right side
: MUTE is displayed on screen when the receiver does not receive signals from
the transmier
: is antenna icon, indicating “Receiving”, is displayed on screen when the
receiver receives signals from the transmier
Displays frequency, volume and sensitivity; a corresponded value is
displayed on screen when the receiver frequency, volume or sensitivity is being
adjusted.
: Lock on: the panel keys have been locked by the “Lock” key and are unable to
adjust or set.
: indicates the receiver frequency is being adjusted
: indicates the receiver squelch level is being adjusted.
Front panel
Power Switch
Lock on/o
Volume Contol
Frequency
Squelch Adjustment
Channel Select
LED Channel Code Display
LCD Frequency Display
1
4
7
2
5
8
3
6
7
8
1
3
4
5
6
17
16
10
9
1314
18
11
12 12
15
2
15
16
18
14
17
10
11
12
13
9
LCD Panel of the Receiver
LCD display:

5
6
AC/DC adaptor
Switching Power Supply(100V~240V , 50~60Hz)
AC IN: AC100~240V/50~60Hz
DC OUT: DC12V/0.5A
AF output cable (with Φ6.3 plug at both ends)
Screwdriver
LCD Display
Power and Mute Switch
▲：Up buon: select the seings of transmier
▼：Down buon: select the seings of transmier
Set buon: set the conguration of handheld transmier
Baery Tray
[Remarks]
Adjusting SET,▲, ▼keys
Please use a 1.5-2.5mm-diameter at-headed
tool and not a pointed one to avoid damaging
the buons.
4-2 UHF PLL Handheld Transmitter // Mh-936K
20
DCV INPUT
12-18V/500mA
AF OUTPUT
RX1
AF OUTPUT
RX2
AF OUTPUT
Mixed
19
22 21
Rear panel
Antenna
Balanced 6.3mm jack Output: for connection to the balanced input, e.g. of a mixer or an
amplier
Mixed AF Output (6.3mm jack, unbalanced): for connection to a balanced input,
e.g. of a mixer or amplier
Power Supply Jack (12-18V/500mA): for connecting the power supply unit
20
22
21
19
26
29
28
31
24
25
27
30
23
23
24
28
26
25
27
29 31 30
4-3 Accessories

7
8
5. Connection
5-1 Receiver // 6-1 Setting US-936K receiver system
(1) Connect to the subsequent unit (e.g. mixer, or amplier)
Connect one end of a proper AF cable to the AF Output or AF Output mixed , then
plug another end to the “MIC IN” input socket of a mixer or a amplier (Step 1 of Figure 1)
(2) Connect the power supply unit
Plug in one end of AC/DC adaptor cable to Power Supply Jack in the rear panel of
receiver, and plug another end into an AC outlet
(Step 2 of Figure 1)
Caution
To prevent accidental disconnection of the plug of the power supply unit from the jack, lead
the cable around the hook for strain relief .
6. Operation
1. Turn on the power to the receiver
(1) Pull the receiver antenna out.
(2) Press the power switch to turn on the power.
(3) To turn o: Keep pressing the power switch down; the power is o about 1 second later.
2. Set the preset channels for receiver
Press the Channel Select ▲, ▼keys to select US-936K preset channels; a total of 225 sets
are available. A preset channel is displayed by the LED while the corresponded frequency is
displayed on LCD . Keeping▲or▼pressed down can change the channels faster. (Fig.2)
3. Frequency key
If to adjust the frequency as you like rather than using a preset channel, press the Frequency key ▲,
▼to adjust the frequency at an increment of “+/-” 0.025MHz; keeping the ▲or ▼keys pressed down
makes the frequency change faster. (Fig.3)
4. Volume key
Press ▲, ▼to adjust the volume as needed in the range between 0 and 31dB; keeping the▲or ▼
keys pressed down makes the volume change faster. (Fig.4)
MIXER
AUDIO OUTPUT
DC INPUT
2
1
DCV INPUT
12-18V/500mA
AF OUTPUT
RX1
AF OUTPUT
RX2
AF OUTPUT
Mixed
32
29 22
21
20
32
Figure 2
Figure 3
Figure 4
Figure 1
7
8
1
3
4
6
預設頻道

9
10
2
5
Panel keys have been locked
When these blink, adjust by +/- 1 MHz
When the preset channel lamp
blinks, press the SET key twice to
display the frequency
When these blink, adjust by +/- 0.025 MHz
24
27
MHZ MHZ
MHZ
27
預設頻道
Figure 5
Figure 6
Figure 7Figure 8
Figure 9
Power Switch
5. Squelch Key
Presss ▲, ▼to adjust the squelch level between -10~+5; keeping the ▲or ▼keys pressed down
makes the sensitivity adjustment faster,Presss ▲, ▼to adjust the squelch level between -10~+5; keep-
ing the ▲or ▼keys pressed down makes the sensitivity adjustment faste.Pay aention to that the
larger the SQ value the shorter the operation distance will be.(Fig.5)
1. Turn on the power
(1) Press the Power switch to turn on the power to the
transmier.
(2) To turn o: Keep pressing down the Power switch and
the power is o about 2 seconds later.
2. Adjusting frequency
# When setting the frequency as desired, make settings as 2-1 and 2-2.
2-1 When frequency is displayed on screen
(1) Press down SET key for 2 seconds.
(2) With the 3 digits on the le of the LCD blinking (Fig.7), press ▲or ▼keys to change the fre-
quency at an increment of “+/-” 1MHz (keeping the ▲or ▼keys pressed down makes the num-
ber change faster). Press SET key to set, and the 3 digits on the right of the LCD blinking (Fig.8);
press ▲or ▼keys to change the frequency at an increment of “+/-” 0.025MHz (keeping the ▲
or ▼keys pressed down makes the number change faster). Press SET key to save the set value.
2-2 When seing your desired frequency while a preset channel is displayed on screen:
(1) Press down SET key for 2 seconds.
(2) e 3 digits on the le of the LCD begin to blink; press SET key twice to display the frequency
on LCD (Fig.9), now adjust the frequency by the same step of “2-1 When frequency is displayed on
screen – Point (2)”.
6. Lock key
When the seing of panel keys is complete, keep pressing the Lock key and aer about 2 seconds the
panel keys are locked from being adjusted or set. To unlock, just keep pressing the Lock key for about 2
seconds. (Fig.6)
6-2 Setting the Mh-936K Handheld transmitter

11
12
27
27
27
27
MHZ
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
3. Using preset channels:
# When using preset channels, make settings as 3-1 and 3-2.
3-1 When a channel is displayed on LCD
(1) Press down the SET key for 2 seconds.
(2) With the 3 digits on the le of the LCD blinking, press▲, ▼keys to change the preset channel
(keeping the ▲, ▼keys pressed down makes the channel change faster). Press SET key to set, and
the leer A or B on the right of the LCD blinks; press▲to display b to select Channel B on the
receiver; or, press ▼display A to select Channel A on the receiver. Aer the selection is made, press
SET key to save the set value (Fig.10).
4. Adjusting microphone sensitivity
(1) Press down the SET key for 2 seconds.
(2) e 3 digits on the le of the LCD begin to blink; press SET key four times to enter the sensitiv-
ity adjustment screen. (Fig.12)
(3) press ▲、▼ keys to adjust the microphone sensitivity in the range of -9-+12dB at an incre-
ment of 3dB. Aer the adjustment, press SET key to save the seing.
5. Adjusting transmission power
(1) Press down the SET key for 2 seconds.
(2) e 3 digits of frequency or channel on the le of the LCD begin to blink; press SET key ve
times to display rF Lo (or rF Hi) on LCD. Press▲to display rF Hi to set as high transmission
power; or press ▼to display rF Lo to set as low transmission power. Press SET key to save the set-
ting. (Fig.13)
6. Seing key lock:
In a mode other than Seing mode, keep pressing down▲key for 2 seconds; when the screen dis-
plays Loc On, the handheld panel key functions are locked. To unlock, press down ▼key for more
than 2 seconds to display Loc OFF on screen, and the key lock is released. (Fig.14)
3-2 When using a preset channel while the frequency is displayed on screen:
(1) Press down the SET key for 2 seconds.
(2) e 3 digits on the le of the LCD begin to blink; press SET key twice to display the channel
on LCD (Fig.11), now adjust the channel by the same step of “3-1 When a channel is displayed on
LCD – Point (2)”.
When the Channel Select lamp
blinks, press ▲,▼ to select the
channel
When the frequency lamp blinks,
press the SET key twice to display
the channel
Press ▲
/Keys are locked /Keys are unlocked
Press ▼
The transmission power adjustment screen is entered
The sensitivity adjustment
screen is entered

13
14
7. Recommendation
(1) In order to achieve the optimum reception condition and also extend the operating distance,
please leave a “open space” between the receiver and transmier.
(2) Keep the devices away from the metal objects or any interference sources, at least 50 cm.
(3) To avoid the feed-back eect, don’t leave the mic. to aim at the speakers directly.
(4) For best pick-up paern, please hold the middle of the mic. body.
(5) Remove baeries from the baery compartment when the transmier will not be used for a
long time.
(6)When you need to replace the baeries, please replace both baeries at the same time with
new ones.
8. Important Notice
(1) JTS oers wireless systems in a selection of bands that conform to the dierent government
regulations of specic nations or geographic regions. ese regulations help limit radio
frequency (RF) interference among dierent wireless devices and prevent interference with
local public communications channels, such as television and emergency broadcasts.
(2) For information on bands available in your area, consult your local dealer or phone JTS.
More information is also available at JTS’s website (www.jts.com.tw).
(3) is Radio apparatus may be capable of operating on some frequencies not authorized in
your region. Please contact your national authority to obtain information on authorized
frequencies and RF power levels for wireless microphone products.