LT/X - Wireless transmitter Lectrosonics - Free user manual and instructions

USER MANUAL LT/X Lectrosonics

• Digital Hybrid Wireless® for compandor-free audio
• Selectable 50 or 100mW output power (varies per model - see specifications)
• Compatibility modes for use with analog receivers
  • 25 or 100 kHz tuning steps (varies per model)
• Integrated multi-function switch for mute or talkback modes
• Wide range input gain control in 1 dB steps
• IR port for setup with IR enabled receivers
  • USB port for firmware updates
• Menu selectable mic or instrument input
• Optional battery eliminator

The LT transmitter offers a full set of professional features in a compact, rugged package. The unit is compatible with all Digital Hybrid Wireless ^® receivers and even some from other manufacturers, making it comfortable in a wide variety of applications from video production to theater, stage and house of worship.

The LT can be configured to operate as a “one touch” device with a single power on/off switch on the top panel, or with full access to all operational parameters using the side panel membrane switches and LCD interface. The top panel switch can also be configured to provide a mute or talkback function.

Frequencies are selectable in 25 kHz or 100 kHz steps. An IR port on the membrane panel enables automatic setup when coupled with an IR enabled receiver. A USB port on the side panel allows firmware updates to be made easily.

The servo bias input accepts mic or line level signals with a wide range of gain adjustment in 1 dB steps. A menu selectable instrument level input is available on the LCD. Accurate LED indications on the top panel and a bar graph indicator on the LCD allow precise gain adjustments to be made for the maximum signal to noise ratio and minimum distortion.

Digital Hybrid Wireless ^® is a patented design that combines 24-bit digital audio with an analog FM radio link to provide outstanding audio quality and the extended operating range of the finest analog wireless systems.

The design overcomes channel noise in a dramatically different way, digitally encoding the audio in the transmitter and decoding it in the receiver, yet still sending the encoded information via an analog FM wireless link.

This proprietary algorithm is not a digital implementation of an analog compandor. Instead, it is a technique which can be accomplished only in the digital domain, even though the audio inputs and outputs are analog signals.

*US Patent 7,225,135

The limiter in the preamp can cleanly handle signal peaks over 30 dB above full modulation, allowing the input gain to be set high enough to achieve the maximum signal to noise ratio with no risk of overload distortion.

The unit is powered by two AA batteries or an optional battery eliminator that replaces the hinged battery door. Wired or spring loaded belt clips are available.

The housing is machined from a solid aluminum billet, finished with an ultra hard, black electroless nickel finish called ebENi.

WARNING: Moisture, including talent's sweat, will damage the transmitter. Wrap the LT in a plastic baggie or other protection to avoid damage, or see the LTCVR.

Rio Rancho, NM, USA www.lectrosonics.com

Specifications

Operating Frequencies:

US: Band A1: 470.100 - 537.575

Band B1: 537.600 - 607.950

Band 606: 606.000 - 631.500

Band C1: 614.400 - 691.175

LT/E01: Band A1: 470.100 - 537.575

Band B1: 537.600 - 614.375

Band 606: 606.000 - 631.500

Band C1: 614.400 - 691.175

LT/E06: Band B1: 537.600 - 614.375

Band C1: 614.400 - 691.175

LT/X: Band A1: 470.100 - 537.575

Band B1: 537.600 - 614.375

Band C1: 614.400 - 691.175

NOTE: It's the user's responsibility to select the approved frequencies for the region where the transmitter is operating

Frequency Selection Steps: US: Selectable; 100 kHz or 25 kHz

E01: Selectable; 100 kHz or 25 kHz

E06: Selectable; 100 kHz or 25 kHz

X: Selectable; 100 kHz or 25 kHz

RF Power output: US: Selectable: 50 or 100mW

E01: 50mW

E06: < 100 mW EIRP

X: 50 or 100 mW

Compatibility Modes: US: Nu Hybrid, IFB, Mode 3

E01: Hybrid, IFB

E06: Hybrid, IFB

X: Hybrid, Mode 3, 200 Mode, 100 Mode,

Mode 7, Mode 6 and IFB mode.

Pilot tone: 25 to 32 kHz; 3 kHz deviation (Digital Hybrid)

25 to 32 kHz; 3.5 kHz deviation (Nu Hybrid)

Frequency Stability: ± 0.002%

Spurious radiation: US: Compliant with ETSI EN 300 422-1

v1.4.2

E01/E06/X: 60 dB below carrier

Equivalent input noise: -120 dBV (A-weighted)

Input level:

Mic: Nominal 2 mV to 300 mV, before limiting

Greater than 1V maximum, with limiting

Instrument: • 1M Ohm high level

Input impedance: Line: 2k Ohm; Mic: 300 Ohm

Input limiter: DSP controlled, dual envelope "soft" limiter

with greater than 30 dB range

Gain control range: 44 dB; digital control

Modulation indicators: • Dual bicolor LEDs indicate modulation of

-20, -10, 0 and +10 dB referenced to full

modulation

- LCD bar graph

Controls:

• Top panel slide switch; programmable as power, mute, talkback or no (off) function
• Side panel membrane switches with LCD interface for power on/off and all setup d configuration controls

Audio Input Jack:

Switchcraft 5-pin locking (TA5F)

Antenna: Galvanized steel, flexible wire

Battery: Two AA; alkaline, lithium, NiMH rechargeable

Battery Life: • Duracell Quantum: 4.75 hours

• Eneloop 2400 mAH NiMH: 5.5 hours

Weight: 5.9 ounces (169 grams), with lithium AA batteries

Dimensions: 2.85 x 2.45 x .75 in. (72 x 62 x 19 mm)

Emission Designator: 110KF3E (LT)

180KF3E (E01/E06/X)

Audio Performance (Overall System - Digital Hybrid mode)

Frequency Response:

Line/Instrument: 35 Hz to 20 kHz (+/-1dB)

Mic input: 35 Hz to 20 kHz (+/-1dB)

Mic input LF roll-off: Selectable knee at 35, 50, 70, 100, 120, 150 Hz

THD: 0.2% (typical)

The roll-off slope steepens at lower frequencies.

Note: The dual envelope

“soft” limiter provides exceptionally good handling of transients using variable attack and release time constants.

Once activated, the limiter

compresses 30+ dB of transmitter input range into 4.5 dB of receiver output range, thus reducing the measured figure for SNR with no limiting by 4.5 dB

SmartNR	No Limiting	w/ Limiting
OFF	103.5	108.0
NORMAL	107.0	111.5

Specifications subject to change without notice.