Tips For Achieving Optimum Performance; Specifications - Shure ULX
Wireless Microphone System User Manual

TIPS FOR ACHIEVING OPTIMUM PERFORMANCE

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Maintain a line of sight between the transmitter and receiver antennas.
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Avoid placing transmitter and receiver where metal or other dense materials may be present.
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Avoid placing the receiver near computers or other RF generating equipment such as CD players, DAT machines, and
digital signal processors.
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Avoid placing the receiver in the bottom of an equipment rack unless the antennas are remotely located.
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Point the receiver antenna tips away from each other at a 45 angle, and keep them away from large metal objects.
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Do not obstruct the receiver antennas.
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Use the proper cable when remotely locating receiver antennas. For best performance, use Shure UA825 or UA850
low loss coaxial antenna cable, or 50 ohm low loss cable such as RG-8U.
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For remote antenna placement, use Shure UA820WB 1/2 Wave Antenna and UA830WB Active Remote Antenna Kits,
along with Shure UA844WB Antenna Distribution System.
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Mount diversity antennas at least 1/4 wave apart. This can be achieved by remote placement of one or both 1/2 wave
antennas using Shure UA825, UA850, or UA8100 low loss coaxial cable and a Shure UA830WB Active Remote Anten-
na Kit in conjunction with a Shure Antenna Distribution System. For multiple system installations, use the Shure
UA844WB Antenna/Power Distribution System.
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Try to maintain a distance of at least 5 meters (15 ft) between the transmitter and receiver.

SPECIFICATIONS

NOTE: For a list of compatible frequencies that are usable in your area, refer to the supplied frequency supplement.
RF Carrier Frequency Range
554.000 to 865.000 MHz (Available frequencies depend on the applicable regulations in the country where the system is used).
Refer to the frequency supplement supplied with the system.
Effective Range
100 m (300 ft.) under optimal conditions
NOTE: Actual working range depends on RF signal absorption, reflection, and interference
Audio Frequency Response
25 to 15,000 Hz, 2 dB
NOTE: Overall system frequency response depends on the microphone element.
ULX1 Transmitter Input
Connector:
Input Configuration:
Actual Impedance:
Maximum Input Level:
TA4F Connector Pin Assignments:
Voltage for Remote Power:
MICROPHONE
ULX1 Transmitter Output
Actual Impedance:
Nominal Output Level:
Maximum Output Level:
Pin Assignments:
( Figure 54)
Unbalanced, active
18 k with lavalier microphone
1 M with instrument cable
10 Vp–p (12 dBV) for 1% THD at minimum gain setting
using 1 kHz signal.
Pin 1: Tied to Ground
Pin 2: Tied to +5 V
Pin 3: Tied to Audio
Pin 4: Tied thru 20k
(On instrument adapter cable, Pin 4 floats)
+5 V supplied to microphone cartridge
ELEMENT
NOTE: LAVALIER MIC TIES PINS 3 AND 4 TOGETHER; THE GUITAR CABLE DOES NOT.
Shell = Ground
Center = Signal
TA4F
Resistor to Ground.
ULX1 MIC JACK BOARD
500
2
2
4
4
500
3 3
27 pF
1 1
FIGURE 54
50
20 mW
30 mW
21
+5 V
27 pF
20K
AUDIO
GROUND