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Sennheiser EK3253 - page 1
EK 3253 Instructions for use ...
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Sennheiser EK3253 - page 2
Contents Safet y instructions ..... ........ ..... ........ ...... ........ ....... ...... ........ ........ ..... 6 Deliv ery in cludes ... ..... ........ ..... ........ ........ ...... ....... ...... ........ ........ ..... 7 EK 3253 bodypa ck receiver ...... ........ ........ ..... ........ ........ ........ ........ 8 The oper ating control s . ...
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Sennheiser EK3253 - page 3
If probl ems occur .. . ............. ...... ........ ..... ........ ........ ..... ........ ........ .. 31 Error che cklist ...... ..... ........ ........ ..... ........ ..... ........ ........ ...... ....... 31 Recom mendations and tips ...... ........ ...... ....... ........ ...... ........ ..... .. 32 Maintenance and car e ........ ........ ... ...
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Sennheiser EK3253 - page 4
6 Safety instru ction s y Please read these instructions carefully and completely before using the receiver. y Make these instructions easily accessible to al l users at all times. Always include these instructions when passing the receiver on to third parti es. y Never open electronic units! If units are opened by customers in breach of this instr ...
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Sennheiser EK3253 - page 5
7 Intended use of the receiver Intended use includes y having read these instructions especially the chapter “Safety instructions” . y using the receiver within the operat ing conditions as described in these instructions. Improper use Improper use is when you use the receiver other than described in these instructio ns or when you use the rece ...
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Sennheiser EK3253 - page 6
8 EK 3253 bodypack r eceiver With the wireless in-ear monitori ng system, consisting of the SR 3254 or SR 3256 stereo tra nsmitter and the EK 3253 bodypack receiver, musicians, video and s ound amateurs, reporters/bro adcasters, etc. can directly mo nitor the r eceived sound signals without tr oublesom e cables or monit or speakers being required. ...
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Sennheiser EK3253 - page 7
9 The operating controls Headphone outp ut (PHONES), 3.5 mm jack sock et Antenna Red LED for operatio n and battery s tatus indication (LOW BA T/ON ) Green LED for RF signal indication (RF) Charging contacts SET button / rocker button (UP /DOW N) Battery compartment Battery compartment cover Unlocking ...
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Sennheiser EK3253 - page 8
10 Indications and displays The LC display Alphanu meric display “B.CH“ – appear s when the channel bank and the channel number are displayed “MHz“ – appe ars when the frequency is displayed 4-step batter y status display Lock mode icon (lock mode is activated) “PILOT” display (pilot tone evaluation is activa ...
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Sennheiser EK3253 - page 9
11 Red LED lit up: The receiver is switched on and the capacity of the batteries/accupack is suffic ient. Red LED flashing: The batteries are/ the accupack is going flat (LOW BA T)! In addition, the 4-step battery status di splay on the display panel provides infor mation on the remai ning battery/accupack capacity: 3 segments: capacity approx. ...
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Sennheiser EK3253 - page 10
12 “PILOT” display The “P ILOT” di spla y appea rs o n the displ ay pan el w hen 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 str ength of the received RF signal. In addition, the green L ...
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Sennheiser EK3253 - page 11
13 Preparing the receiver for use Insert ing and replaci ng the batte ries For powering the EK 3253 receiver, two 1 .5 V AA size batteries are required. Press the two unlocking buttons an d open the battery compartment co ver . Insert the two batteries as shown in the diagram abo ve. Please observe correct polarity when inserti ng t ...
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Sennheiser EK3253 - page 12
14 Inserting and charging the accupack The receiver can also be po wered via the recharg eable Sennheiser BA 2015 accupack. Inse rt the accupack into the battery c ompartment as descri bed above. The receiver has two char ging contacts and a sensing contact on its short sides. The accupack can be recharged while remaining in the r eceiver. Inse ...
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Sennheiser EK3253 - page 13
15 Using the receiver Switchin g the receiv er on/off T o s witch the receiver on, turn the volume control to the right until it clicks. The red LED lights up. T o s witch the receiver off, turn the volume control to the lef t until it cli cks. The red LED goes off. Note : y The receiver has a short switch-on delay. y Remove ...
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Sennheiser EK3253 - page 14
16 Connect the supplied earphones or any Sennheiser stereo headphones with 3.5 mm stereo jack plug to the headphone output (PHONES) . First, set the volume control to the lowest volume by turning it to the left as far as possible. Th en gradually turn up the volume. Adjusting th e volume Use the volume control to adjust the ...
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Sennheiser EK3253 - page 15
17 Adjusting th e balance/FO CUS During stereo operat ion – and provided that the standard display is shown – the / rock er bu tton serves to adjust the balance between the lef t and right stereo signal. During FOCUS operation, the / rocker button ser ves to adjust the relative levels of the two separate channels in the ...
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Sennheiser EK3253 - page 16
18 The operating menu The buttons Buttons Mo de To ... SET Standard disp lay get into the operating menu Operati ng menu get into the setting mode o f the selected menu Setting mode store the settings and return to the previous menu l evel / Standard disp lay In stereo operation: adjust the ba lance between the left and right stereo signal ...
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Sennheiser EK3253 - page 17
19 Overview of menus Display Func tion of the menu CHAN Selecting a channel TUNE Setting a receiving frequency for the channel bank “U” (user bank) SCAN Scanning the channel bank for free channels SQELCH Adjusting the squel ch threshold ST-FOC Stereo/FOCUS selection LTD Limiting the volume at the headphone output HI-BST Activating/deactivating ...
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Sennheiser EK3253 - page 18
20 W orkin g with the opera ting men u By way of example of the “ TUNE ” men u, th is se ction d escr ibes how to use the operating menu. After switching on the receiver, the standard display is shown on the d isplay p anel. Getting into the operating menu Press the SET button to get from the standard d isplay into the operating menu. The l ...
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Sennheiser EK3253 - page 19
21 Adjusting a setting Pres s the / rocker button to adju st the se tting . By briefl y pressi ng the / rock er but ton, th e dis play jumps eithe r forwar ds or bac kwar ds to th e next se tting. In the “ CHAN ”, “ TUNE ”, “ NAME ” and “ BAL / FOC ” menu, th e / rock er butt on f eatures a “fas t se ar ...
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Sennheiser EK3253 - page 20
22 The o pera ting menu of t he rec eiver SET Changing the channel STORED CHAN F. 01 B.CH F. 02 B.CH SET SQELCH Setting the squelch threshold Current squelch threshold SET / : LO, MID, HI SET : Stores the setting SQ LO SQ HI STORED DISPLA Y TUNE Setting the frequency for channel bank “U” eingestellten Kanal Current frequency im SET U. U. SCAN S ...
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Sennheiser EK3253 - page 21
23 HI-BST PILOT Activating/deactivating the pilot tone evaluation SET Pilot tone evaluation activated or deactivated PL T . ON ON PL T . OFF OFF Current balance setting BAL.L 15 15 LOCK Activating/deactivating the lock mode SET Lock mode activated or deactivated LOC. OFF OFF LOC. ON ON EXIT Exiting the operating menu SET / : BAL.L 1...15, BAL.--0-- ...
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Sennheiser EK3253 - page 22
24 Adjustment tips for the operating menu Selecting a channel – CHAN Via the “ CHAN ” menu, you can switch between the channel s in the channel banks “F” (fixed bank) or “U” (user bank). The channel bank “F“ has up to 16 switchable channels that are factory-preset to customer-specific r eceiving frequencies. These frequencies cann ...
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Sennheiser EK3253 - page 23
25 Press the SET button to confirm your s election. The recei ver changes immediately to the new frequency. Scanning the channel ba nk for free channels – SCAN Before putting one or several transmis sion links into operation, you should scan the channel bank for free channels. Starting the scan an d storing the scan result Before starting ...
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Sennheiser EK3253 - page 24
26 Note: Before adjusting the s quelch threshold to a different setting, use the volume control to set the volume for the connected headphones to the minimum. There are three possible squelch setting: y LO = low y MID = middl e y HI = high Selecting the setting “LO” reduces the squelch thr eshold, selecting the setting “HI” inc r eases ...
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Sennheiser EK3253 - page 25
27 S tereo/FO CUS sele ction – ST-FOC Via the “ ST-FO C ” menu, you can switch between stereo and FOCUS operation. In both operating modes, the corresp onding transmitter has to be set to stereo operation. When the receiver is set to stereo o peration, the left-right signals are available as usual. When the receiver is set to FOCUS operation ...
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Sennheiser EK3253 - page 26
28 S electing th e standard displ ay – DISLPY Via the “ DIS PL Y ” menu, you can select the standard dis play: Ente ring a name – NAM E Via the “ NAME ” menu, you can enter a freely selectable name for the receiver. You can, for example, enter the name of the performer for whom the adjustments have been made. This name can be displayed ...
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Sennheiser EK3253 - page 27
29 Press the SET button to change to the next segment and select the next character. Have you entered the name completely? Press t he SET button to sto re your setting and t o return to the p revious menu level. Load ing th e facto ry-preset default sett ings – RESET Via the “ RESET ” menu, you can load the factory-preset default sett ...
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Sennheiser EK3253 - page 28
30 Press the two unlocking buttons and open the battery compartment cover . Press the SET button . “LOC.ON” and t he lock mode icon appear on the d isplay. Press the / rocker button . “LOC.O FF” flas hes on the disp lay . Confirm your selection by pressing the SET butto n . “STORED ” appears o ...
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Sennheiser EK3253 - page 29
31 If problems occur ... Error checklist If problems occur that are not listed in the abo ve table or if the problems cann ot be s olved with the proposed s olutions, p lease contact your local Sennheiser agent for ass istance. Problem Possible cause Possible solution No operation indication Batteries are flat or accupack is flat Replace the batter ...
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Sennheiser EK3253 - page 30
32 Recommendations and tips ... fo r the receive r y The antenna must not be in direct contact with the body . ... f or optimu m recept ion y Reception range depends to a large extent on location. There should be a “free line of sight” between tr ansmitting and receiving antennas. y T o avoid o vermodu lating th e receiv er, ob serve a mi nimum ...
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Sennheiser EK3253 - page 31
33 Additional information HDX noise reduction Progress you can hea r: The product family is equ ipped with HDX , the Sennheiser noise reduction system that reduces RF interference. It in creases the signal-to-noi se ratio in wirele ss audio transmissio n to more than 90 dB . HDX is a wideband compander system which compresses the audio signal i n t ...
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Sennheiser EK3253 - page 32
34 Squ elch Pilot tone squelch When set to stereo op eration, the transmitter ad ds a 19-kHz pilot tone to the audio signal. The receiver checks incoming audio signals to see if the pilot tone i s present. In the absence of the 19-kHz signal, the receiver ’s audio output wi ll remain muted, even if a strong RF signal is present. This prevents str ...
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Sennheiser EK3253 - page 33
35 Specifications EK 3253 bodyp ack rece iver RF characteristics Modulation FM stereo Frequency r anges 518–554, 626–662, 740–776, 786–822, 830–866 MHz Receiving frequencies 1 channel bank with up to 16 factory-preset channels 1 channel bank with up to 16 freely selectable channels (frequencies tunable in steps of 5 kHz) Switching bandwid ...
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Sennheiser EK3253 - page 34
36 IE 4 earphones Connector assignment Accessories IE 4: Earpho nes IES 4: 1 pair of ear sleeves for IE 4 earphones BA 2015: Accupack L 2015: Charger for BA 2015 accupack AF output pow er (at peak deviation, 1 kHz AF ) PHONES 2 x 100 mW at 32 Ω Overall unit Temperature range -10 °C to +55 °C Power su pply 2 AA size batteries, 1.5 V Nominal volta ...
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Sennheiser EK3253 - page 35
37 Warranty regulati ons The guarantee period for this Sennheiser product is 24 months from the date of purchas e. Excluded are accessory i tems, rechargeable or disposable batteri es that are delivered wit h the product; due to their characteristics these p roducts have a shorter service life that is princ ipally dependent on the individual freque ...
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Sennheiser EK3253 - page 36
Sennheiser electronic GmbH & Co. KG 30900 W edemark, Germany Phone +49 (5130) 6 00 0 Fa x +49 (5130) 600 300 www.senn heiser.com Printed in Germany P ubl. 08/05 512765/A01 ...
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