Sennheiser EK3253 - Manual

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 operating conditions as described in these instructions. Improper use Improper use is when you use the receiver other than described in ...

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 cab...

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 butto...

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 ...

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 add...

13 Preparing the receiver for use Inserting and replacing the batteries For powering the EK 3253 receiver, two 1.5 V AA size batteries are required. Press the two unlocking buttons and open the battery compartment cover . Insert the two batteries as shown in the diagram above. Please observe correct...

14 Inserting and charging the accupack The receiver can also be powered via the rechargeable Sennheiser BA 2015 accupack. Insert the accupack into the battery compartment as described above. The receiver has two charging contacts and a sensing contact on its short sides. The accupack can be recharge...

15 Using the receiver Switching the receiver on/off To switch the receiver on, turn the volume control to the right until it clicks. The red LED lights up. To switch the receiver off, turn the volume control to the left until it clicks. The red LED goes off. Note: y The receiver has a short switch-o...

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. Then gradually turn up the volume. Adjusting the volume Use the volum...

18 The operating menu The buttons Buttons Mode To ... SET Standard display get into the operating menu Operating menu get into the setting mode of the selected menu Setting mode store the settings and return to the previous menu level / Standard display In stereo operation: adjust the balance betwee...

19 Overview of menus Display Function 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 squelch threshold ST-FOC Stereo/FOCUS selection LTD Limiting the volume at the head...

20 Working with the operating menu By way of example of the “ TUNE ” menu, this section describes how to use the operating menu. After switching on the receiver, the standard display is shown on the display panel. Getting into the operating menu Press the SET button to get from the standard display ...

22 The operating menu of the receiver 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 DISPLAY TUNE Setting the frequency for channel bank “U” eingestellten Ka...

25 Press the SET button to confirm your selection. The receiver changes immediately to the new frequency. Scanning the channel bank for free channels – SCAN Before putting one or several transmission links into operation, you should scan the channel bank for free channels. Starting the scan and stor...

26 Note: Before adjusting the squelch 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 = middle y HI = high Selecting the setting “LO” reduces the squelch threshold, sele...

27 Stereo/FOCUS selection – ST-FOC Via the “ ST-FOC ” menu, you can switch between stereo and FOCUS operation. In both operating modes, the corresponding transmitter has to be set to stereo operation. When the receiver is set to stereo operation, the left-right signals are available as usual. When t...

28 Selecting the standard display – DISLPY Via the “ DISPLY ” menu, you can select the standard display: Entering a name – NAME 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 mad...

29 Press the SET button to change to the next segment and select the next character. Have you entered the name completely? Press the SET button to store your setting and to return to the previous menu level. Loading the factory-preset default settings – RESET Via the “ RESET ” menu, you can load the...

30 Press the two unlocking buttons and open the battery compartment cover . Press the SET button . “LOC.ON” and the lock mode icon appear on the display. Press the / rocker button . “LOC.OFF” flashes on the display. Confirm your selection by pressing the SET button . “STORED” appears on the display ...

31 If problems occur ... Error checklist If problems occur that are not listed in the above table or if the problems cannot be solved with the proposed solutions, please contact your local Sennheiser agent for assistance. Problem Possible cause Possible solution No operation indication Batteries are...

32 Recommendations and tips ... for the receiver y The antenna must not be in direct contact with the body. ... for optimum reception y Reception range depends to a large extent on location. There should be a “free line of sight” between transmitting and receiving antennas. y To avoid overmodulating...

33 Additional information HDX noise reduction Progress you can hear: The product family is equipped with HDX , the Sennheiser noise reduction system that reduces RF interference. It increases the signal-to-noise ratio in wireless audio transmission to more than 90 dB. HDX is a wideband compander sys...

34 Squelch Pilot tone squelch When set to stereo operation, the transmitter adds a 19-kHz pilot tone to the audio signal. The receiver checks incoming audio signals to see if the pilot tone is present. In the absence of the 19-kHz signal, the receiver’s audio output will remain muted, even if a stro...

35 Specifications EK 3253 bodypack receiver RF characteristics Modulation FM stereo Frequency ranges 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...

36 IE 4 earphones Connector assignment Accessories IE 4: Earphones IES 4: 1 pair of ear sleeves for IE 4 earphones BA 2015: Accupack L 2015: Charger for BA 2015 accupack AF output power (at peak deviation, 1 kHz AF ) PHONES 2 x 100 mW at 32 Ω Overall unit Temperature range -10 °C to +55 °C Power sup...

Sennheiser electronic GmbH & Co. KG 30900 Wedemark, Germany Phone +49 (5130) 600 0 Fax +49 (5130) 600 300 www.sennheiser.com Printed in Germany Publ. 08/05 512765/A01