User's Manual Part 1

470MHz to 900MHz, please refer to your national EMC regulations to pick out the authorized
frequency band (F1 ~ F8, detail please see Annex hereafter) for your end application.
2. FEATURES
-UP-81DR, PLL UHF Diversity Receiver,
-Friendly interface of front panel LCD status display;
-Auto Scan function for easy and convenient operation;
-Switching diversity control to receive the RF signal;
-Three output level versions;
-Squelch control;
-UP-8H/8P transmitters,
-Soft touch painting for comfortable use;
-Rechargeable battery design;
-Three RF output power versions;
-Mute function;
-Lock function to avoid the misaction during the live applications;
-Common features,
-PLL synthesized design;
-Consistent operating frequencies to comply with the EMC regulations;
-Up to 12x12, total 144 channel frequency presets;
-Manufactured under ISO9000:2000, ISO/TS16949:2002 quality management system;
3. CONTROL ELEMENTS
3.1 UP-81DR, PLL UHF Diversity Receiver
Power Switch
It switches on/off UP-81DR main power.
1
1
1 1 2 2 3 3 4 4
5 5
2
2
THE FRONT PANEL
5
Last but not the least, the operating frequency of this wireless system may be varied from
- Adjust from the transmitter,
1) Check the preset frequency (preset group, and preset channel) displayed on the
receiver in Mhz.
2) Switch on the transmitter.
3) Touch the CH/ON key slightly to select the parameters to be edited.
4) Use the Select key to set the proper channel / group.
2) Manually Selecting Frequency
Turn on the receiver . After touch the MENU key, the 'Group' indicated on the LCD
display flashes, and use the UP/DOWN key to select the right group, after it is done, press
'Mem' to store the settings. To edit the preset channel or other parameters, please press
again the MENU key, and so on.
MODEL
Channel
Frequency band
Receiver type
Frequency response
Frequency stability
T.H.D.
Modulation mode
S/N Ratio
Dynamic
RF sensitivity
Audio output
Balance output
Power supply
Dimensions
Weight
UP-81DR
Multi-channels, up to 144 frequency presets for
each frequency bands
UHF 470-900 MHz
Dependent on applicable country regulations
PLL UHF SYNTHESIZED
50 Hz-15KHz ( 3dB)
0.005% (-10 -50 )
1KHZ 0.8%
FM (F3E)
90dB
100dB
-100 dBm/30dB SINAD
Unbalanced 6.3mm phone jack 750mV ;
35KHz deviation
1V , 35KHz deviation
DC 12-18V/ 500mA
5. TECHNICAL SPECIFICATIONS
14
210(W) 165 (D) 50(H)mm
(8.3" 6.5" 1.9)
1.046Kg