Sennheiser EK 3253 Manual de usuario
EK 3253
Instructions for use
Contents
Safety instructions .......................................................................... 6
Delivery includes ............................................................................. 7
EK 3253 bodypack receiver ........................................................... 8
The operating controls ................................................................... 9
Indications and displays .............................................................. 10
The LC display .......................................................................... 10
Preparing the receiver for use .................................................... 13
Inserting and replacing the batteries ................................. 13
Inserting and charging the accupack ................................. 14
Using the receiver ......................................................................... 15
Switching the receiver on/off .............................................. 15
Connecting the headphones ................................................. 15
Adjusting the volume ............................................................ 16
Adjusting the balance/FOCUS .............................................. 17
Activating/deactivating the lock mode ............................. 17
Attaching the receiver to clothing ...................................... 17
The operating menu ..................................................................... 18
The buttons ............................................................................. 18
Overview of menus ................................................................ 19
Working with the operating menu ..................................... 20
The operating menu of the receiver .......................................... 22
Adjustment tips for the operating menu ................................. 24
Selecting a channel – CHAN .................................................. 24
Selecting the frequencies to be stored in the
channel bank “U” – TUNE ..................................................... 24
Scanning the channel bank for free channels – SCAN .... 25
Adjusting the squelch threshold – SQELCH ....................... 25
Stereo/FOCUS selection – ST-FOC ........................................ 27
Limiting the volume at the headphone output – LTD ..... 27
Activating/deactivating the frequency boost – HI-BST . 27
Selecting the standard display – DISLPY ........................... 28
Entering a name – NAME ...................................................... 28
Loading the factory-preset default settings – RESET ..... 29
Activating/deactivating the pilot tone
evaluation – PILOT .................................................................. 29
Activating/deactivating the lock mode – LOCK ............... 29
Exiting the operating menu – EXIT ..................................... 30
If problems occur ... ....................................................................... 31
Error checklist .......................................................................... 31
Recommendations and tips ........................................................ 32
Maintenance and care .................................................................. 32
Additional information ................................................................ 33
Squelch ..................................................................................... 34
Specifications ................................................................................. 35
Connector assignment ........................................................... 36
Accessories .............................................................................. 36
Thank you for choosing Sennheiser!
We have designed this product to give you reliable operation
over many years. Over sixty years of accumulated expertise in
the design and manufacture of high-quality electro-acoustic
equipment have made Sennheiser a world-leading company in
this field.
Please take a few moments to read these instructions carefully,
as we want you to enjoy your new Sennheiser products quickly
and to the fullest.
6
Safety instructions
yPlease read these instructions carefully and completely
before using the receiver.
yMake these instructions easily accessible to all users at all
times. Always include these instructions when passing the
receiver on to third parties.
yNever open electronic units! If units are opened by customers
in breach of this instruction, the warranty becomes null and
void.
yWater entering the housing of the receiver can cause a short-
circuit and damage the electronics. Protect the receiver from
damp and wet. Only use a slightly damp cloth to clean the
receiver.
yFollow the safety instructions on the receiver.
Attention! High volume!
This is a professional transmission system.
Commercial use is subject to the safety-at-work
regulations. Sennheiser, as the manufacturer, is
therefore obliged to expressly point out possible
health risks arising from use.
This system is capable of producing sound pressure exceeding
85 dB(A). 85 dB(A) is the sound pressure corresponding to the
maximum permissible volume which is by law (in some
countries) allowed to affect your hearing for the duration of a
working day. It is used as a basis according to the specifications
of industrial medicine. Higher volumes or longer durations can
damage your hearing. At higher volumes, the duration must be
shortened in order to prevent damage. The following are sure
signs that you have been subjected to excessive noise for too
long a time:
yYou can hear ringing or whistling sounds in your ears.
yYou have the impression (even for a short time only) that
you can no longer hear high notes.
7
Intended use of the receiver
Intended use includes
yhaving read these instructions especially the chapter “Safety
instructions”.
yusing the receiver within the operating conditions as
described in these instructions.
Improper use
Improper use is when you use the receiver other than described
in these instructions or when you use the receiver under
operating conditions different from those described in these
instructions.
Delivery includes
y1 EK 3253 bodypack receiver
y2 batteries
y1 pair of IE 4 earphones
yInstructions for use
8
EK 3253 bodypack receiver
With the wireless in-ear monitoring system, consisting of the
SR 3254 or SR 3256 stereo transmitter and the EK 3253
bodypack receiver, musicians, video and sound amateurs,
reporters/broadcasters, etc. can directly monitor the received
sound signals without troublesome cables or monitor speakers
being required. In addition, the system can also be used for any
application where talkback signals are to be transmitted.
The system has superb audio quality with an increased signal-
to-noise ratio and dynamic range due to the inclusion of
Sennheiser’s HDX noise reduction system.
The EK 3253 bodypack receiver has the following features:
yEasy to use
yFOCUS function for individual audio mix
yPilot tone squelch control (during stereo operation)
yReceiving frequencies tunable in steps of 5 kHz
yScan function for scanning the channel banks for free
channels
The channel bank system
The EK 3253 receiver is available in five UHF frequency ranges:
Range A: 518 to 554 MHz
Range B: 626 to 662 MHz
Range C: 740 to 776 MHz
Range D: 786 to 822 MHz
Range E: 830 to 866 MHz
The receiver has two channel banks with up to 16 switchable
channels each. The channels of the channel bank “F“ (fixed
bank) have been factory-preset to customer-specific receiving
frequencies. These frequencies cannot be changed.
The channel bank “U” (user bank) allows you to freely select
and store frequencies.
Recommended transmitters
ySR 3254/SR 3256
9
The operating controls
Headphone output
(PHONES), 3.5 mm jack
socket
Antenna
Red LED for operation and
battery status indication
(LOW BAT/ON)
Green LED for RF signal
indication (RF)
Charging contacts
SET button
/rocker button
(UP/DOWN)
Battery compartment
Battery compartment
cover
Unlocking button
ESC button
LC display
On/off/volume control
10
Indications and displays
The LC display
Alphanumeric display
“B.CH“ – appears when the channel bank and the channel
number are displayed
“MHz“ – appears when the frequency is displayed
4-step battery status display
Lock mode icon (lock mode is activated)
“PILOT” display (pilot tone evaluation is activated)
“MUTE” display (audio output is muted)
7-step level display for audio signal “AF”
7-step level display for RF signal “RF”
Operation and battery status indication
The red LED (LOW BAT/ON) provides information on the
current operating state of the receiver:
11
Red LED lit up: The receiver is switched on and the capacity
of the batteries/accupack is sufficient.
Red LED flashing: The batteries are/the accupack is going flat
(LOW BAT)!
In addition, the 4-step battery status display on the display
panel provides information on the remaining battery/accupack
capacity:
3 segments: capacity approx. 100 %
2 segments: capacity approx. 70 %
1 segment: capacity approx. 30 %
Battery icon flashing: LOW BAT
Modulation display of the received transmitter
The level display for audio signal “AF” shows the modulation of
the received transmitter. When the transmitter’s audio input
level is excessively high, the level display for audio signal “AF”
shows full deflection.
“MUTE” display
The “MUTE” display appears on the display panel when the
RF signal of the received transmitter is too weak.
12
“PILOT” display
The “PILOT” display appears on the display panel when the
pilot tone evaluation is activated (see “Activating/deactivating
the pilot tone evaluation – PILOT” on page 29).
RF signal indication
The level display for RF signal “RF” shows the strength of the
received RF signal. In addition, the green LED (RF) at the
front of the receiver lights up when an RF signal is being
received.
However, the green LED (RF) does not light up when the audio
output is muted because
ythe RF signal of the received transmitter is too weak,
ythe transmitter is set to mono operation and the receiver’s
pilot tone evaluation is deactivated.
Display backlighting
After pressing a button, the display remains backlit for approx.
10 seconds.
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