Lectrosonics HM/E01 Quick Start Manual page 2

HM/E01 Plug-On Transmitter
The HM Digital Hybrid
design that allows the transmitter to operate in its native Digital Hybrid Wire-
less mode, Lectrosonics 200 Series, 100 Series, IFB product groups, plus
®
three modes for compatibility with analog receivers from other manufacturers.
A unique multi-voltage phantom power feature allows the transmitter to be
used with virtually any microphone, including high-current condenser types,
expanding its usefulness in high-end applications such as motion picture
production.
The transmitter provides up to 1024 frequencies selected with the membrane
switch keypad. The input amplifier uses an ultra low noise op-amp for quiet
operation. It is gain controlled with a wide range dual envelope limiter, provid-
ing over 30 dB of headroom above full modulation. A 24-bit A-D converter
digitizes the audio, then filters supersonic noise above 21 kHz. The resulting
signal is encoded with a proprietary algorithm to produce an analog data sig-
nal for RF transmission. The underlying RF link is an optimized FM system
with +/-75 kHz wide deviation for a high signal to noise ratio.
The antenna is formed between the lower housing of the transmitter and the
attached system. It functions as a dipole radiator when attached to a hand-
held microphone and somewhat like a ground plane antenna when con-
nected into a mixer. The conical shaped collar on the input coupler is made
of DuPont Delrin
TM
frequency blocks.
Operating Frequencies (MHz):
Block 470 470.100 - 495.600 MHz
Block 19
Block 20
Block 21
Block 22
Block 23
Block 24
Block 25
Block 26
RF Power output: 100 mW (nominal)
2
UHF plug-on transmitter features a DSP-based
®
to improve the ERP of the antenna in the uppermost
®
486.400 - 511.900 MHz
512.000 - 537.500 MHz
537.600 - 563.100 MHz
563.200 - 588.700 MHz
588.800 - 607.900 / 614.100 - 614.300 MHz
614.400 - 639.900 MHz
640.000 - 665.500 MHz
665.600 - 691.100 MHz
LECTROSONICS, INC.