Shure ULX manual Tips for Achieving Optimum Performance, Specifications

TIPS FOR ACHIEVING OPTIMUM PERFORMANCE

•Maintain a line of sight between the transmitter and receiver antennas.

•Avoid placing transmitter and receiver where metal or other dense materials may be present.

•Avoid placing the receiver near computers or other RF generating equipment such as CD players, DAT machines, and digital signal processors.

•Avoid placing the receiver in the bottom of an equipment rack unless the antennas are remotely located.

•Point the receiver antenna tips away from each other at a 45° angle, and keep them away from large metal objects.

•Do not obstruct the receiver antennas.

•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.

•For remote antenna placement, use Shure UA820WB 1/2 Wave Antenna and UA830WB Active Remote Antenna Kits, along with Shure UA844WB Antenna Distribution System.

•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 Antenna Kit in conjunction with a Shure Antenna Distribution System. For multiple system installations, use the Shure UA844WB Antenna/Power Distribution System.

•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 (Figure 54)

Connector:	TA4F
Input Configuration:	Unbalanced, active
Actual Impedance:	18 kΩ with lavalier microphone 1 MΩ with instrument cable
Maximum Input Level:	10 Vp–p (12 dBV) for 1% THD at minimum gain setting using 1 kHz signal.
TA4F Connector Pin Assign-	Pin 1: Tied to Ground Pin 2: Tied to +5 V Pin 3: Tied to Audio Pin 4: Tied thru
ments:	20kΩ Resistor to Ground. (On instrument adapter cable, Pin 4 floats)
Voltage for Remote Power:	+5 V supplied to microphone cartridge

MICROPHONE

ELEMENT

2

4

2

4

ULX1 MIC JACK BOARD

500:

27 pF

20K :

+5 V

3

1

3

1

500 :

AUDIO 27 pF

GROUND

NOTE: LAVALIER MIC TIES PINS 3 AND 4 TOGETHER; THE GUITAR CABLE DOES NOT.

FIGURE 54

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