Lectrosonics HMa/E02 handleiding
Handleiding
Je bekijkt pagina 5 van 24
Wideband Digital Hybrid
®
Plug-On Transmitter
Rio Rancho, NM
5
Low Frequency Roll-O
The low frequency roll-o can be set for a 3 dB down
point at 35, 50, 70, 100, 120 and 150 Hz to control sub-
sonic and very low frequency audio content in the au-
dio. The actual roll-o frequency will vary slightly depend-
ing upon the low frequency response of the microphone.
Excessive low frequency content can drive the trans-
mitter into limiting, or in the case of high level sound
systems, even cause damage to loudspeaker systems.
The roll-o is normally adjusted by ear while listening as
the system is operating.
Input Limiter
A DSP-controlled analog audio limiter is employed
before the analog-to-digital (A-D) converter. The limiter
has a range of more than 30 dB for excellent overload
protection. A dual release envelope makes the limiter
acoustically transparent while maintaining low distor-
tion. It can be thought of as two limiters in series, a fast
attack and release limiter followed by a slow attack and
release limiter. The limiter recovers quickly from brief
transients, with no audible side eects, and also recov-
ers slowly from sustained high levels, to keep audio dis-
tortion low and while preserving short term dynamics.
Signal Encoding and Pilot Tone
In addition to controlling the limiter, the DSP also en-
codes the digitized audio from the A-D converter and
adds an ultrasonic pilot tone to control the receiver’s
squelch. A pilot tone squelch system provides a reliable
method of keeping a receiver output muted (squelched)
even in the presence of signicant interference. When
the system is operating in the hybrid mode, a dier-
ent pilot tone frequency is generated for each carrier
frequency in 100 kHz increments to prevent inadvertent
squelch problems and simplify multi-channel coordina-
tion.
Microprocessor and DSP
A microprocessor monitors user command inputs from
the control panel buttons and numerous other internal
signals. It works intimately with the DSP to ensure the
audio is encoded according to the selected Compatibil-
ity Mode and that the correct pilot tone is added to the
encoded signal.
Compatibility Modes
The transmitter was designed to operate with Lectroson-
ics Digital Hybrid Wireless
®
receivers and will yield the
best performance when doing so. However, due to the
exibility of digital signal processing, the transmitters
can also operate in various compatibility modes (vary
per specic model) for use with Lectrosonics Mode 3
and IFB receivers. It will also work with certain non-Lec-
trosonics receivers. Contact your sales representative or
the factory for a complete list of compatible non-Lectro-
sonics receivers.
Control Panel
The control panel includes four membrane switches and
an LCD screen to adjust the operational settings. Multi-
color LEDs are used to indicate audio signal levels for
accurate gain adjustment and for battery status.
Bekijk gratis de handleiding van Lectrosonics HMa/E02, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Lectrosonics |
| Model | HMa/E02 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 5848 MB |
