SR 4000
UHF Receiver
Description
a) Hardware
The SR 4000 UHF receiver is one standard EIA rack unit
high and one-half rack unit wide with a full metal chassis.
Thus, two receivers can be placed side-by-side in one rack
space (rack-mount hardware included). The SR 4000 has a
30 MHz wide UHF band containing presets with
intermodulation-free frequencies as well as a tuning mode
with access to up to 1,200 switchable frequencies. The SR
4000 operates as a true diversity receiver, in which two
completely separate antennae, receiver and demodulator
sections are operational at all times. The receiver includes a
Pilot Tone Decoder Unit that decodes transmitter data out of
the Pilot Tone’s data stream. This enables the SR 4000 to
show battery charge status and mute status of the transmitter
on the integrated, back-lit color display. This data is also
available at the Logic Output Connector on the rear panel.
The HT4000 & PT4000´s Pilot Tone allows automatic muting
of the SR´s audio output in case of invalid or corrupted signal
(Tone Code Squelch TCSQ). If necessary this automatic
squelch option can be overruled by a manual squelch setting.
For PC control and monitoring of the SR unit a special data
port is available on the rear panel of the SR 4000.
The True Diversity receiver concept offers maximum dynamic
range, greater freedom from interference and noiseless
switching from one receiver to the other. Both balanced 3-pin
XLR and unbalanced 1/4-inch output connectors are available.
An output level switch allows the adjustment of 3 output levels
(-30, 0, +6 dB) for optimum system gain structure. Also available
on the rear panel are a data port connector, a logic output, 2 x
BNC antenna Connectors and a lockable DC input jack.
Controls on the SR 4000 include a backlit display and a
Jog wheel to adjust various receiver settings such as squelch
threshold, carrier frequency selection, user’s name, scan &
rehearsal mode selection and many more. Indicators on the
unit include mute, audio level bargraph, RF level bargraph,
6x14 segment alphanumeric display and menu control. A
unique, programmable Status Control Ring shows the most
important system data at one glance.
Each SR 4000 can accommodate a pair of diversity
antennas; however, when a number of receivers are used in a
single system, a master antenna pair (with or without antenna
booster, directional and omnidirectional antennas) can be
used to feed all receivers. A wide range of accessories such
as an antenna splitter, antenna multi-coupler and antenna
booster are available for operational flexibility and ease of
installation.
b) Software
The internal software of the SR 4000 offers a wide range of
control features for an easy setup even in complex multi-
channel systems under difficult RF conditions. Most helpful
are features like AutoSetup (automatic intermodulation free
channel selection), EnvironmentScan (scanning of the unit’s
RF range), and RehearsalMode (recording of important system
data during rehearsal helps optimize the system setup).
Important settings like frequency, squelch, unit name, etc. can
be edited and stored via an easy menu structure. Even more
control & monitoring features are available via the optional
MCS 4000 (MissionControl Software) PC Control Software.
Features
• Wideband true-diversity frequency-
agile UHF receiver with 1,200
channels and all-metal chassis
• Factory-selected, pre-matched
frequency groups for quick system
setup
• Backlit color LCD allows easy
monitoring of operating parameters
at a glance
• Jog wheel control allows quick, easy
parameter adjustments
• AutoSetup, EnvironmentScan and
Rehearsal Modes for quick, easy
system setup
• Bodypack and handheld transmitters
available with a wide selection of
AKG microphones
• Up to 18 intermodulation-free
frequencies on each 30 MHz
frequency band
• Wide range of optional accessories
available for system customization
AutoSetup
RehearsalMode
EnvironmentScan
Battery Status/TX Mute
(82 pages)
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