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Sennheiser SR 3256 - page 1
4 Instructions for use SR 3254 SR 3256 SR 3254 SR 3256 ...
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Sennheiser SR 3256 - page 2
1 Contents Safety instructions ............ .............. ............... .............. .............. ....... 2 SR 3254/SR 3256 transmitters ........................ .............. ............... . 6 Delivery includes ............. ............... .............. .............. .............. .......... 7 Overview of operating controls ......... ...
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Sennheiser SR 3256 - page 3
2 Safety instructions These instruct ions for use cont ain important safety information. Read these instructions. Keep these instructions in a sa fe place. Always include these instructions when passing the device on t o third parties. Heed all warnings. Follow all instruct ions. Operation U s e t h e d e v i c e i n d r y r o o m s o n l y . T o r ...
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Sennheiser SR 3256 - page 4
3 that matches the power outp ut sockets in your country, or to replace the obsolete socket with one to current standards. T h i s d e v i c e s h o u l d b e o p e r a t e d o n l y f r o m t h e t y p e o f p o w e r source indicated on the marking la bel. lf you are not sure of the type of power su pply to your buil ding, consult your dealer or ...
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Sennheiser SR 3256 - page 5
4 Symbols on adhesive labels attached to the device The adjoining adhesive label is attached to the devices back . The symbols on this label have the following meaning: This symbol is intended t o alert the user to the presence of un- insulated dangerous vol tage within the product's enclosure that may be of s uff icie nt m agn itu de to con s ...
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Sennheiser SR 3256 - page 6
5 Intended use of the transmitter Intended use includes y having read these instru ctions especially the chapter “Safety instructions”. y using the transmitter within the operating conditi- ons as descr ibed in thes e instructions. Improper use Improper use is when you use the transmitter other than described in these inst ructions or when you ...
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Sennheiser SR 3256 - page 7
6 SR 3254/SR 3256 transmitters With the wireless in-ear monitori ng system, consisting of the SR 3254 or SR 3256 stereo tran smitter and the EK 3253 bodypack receiver, musi cians, video and sound amateur s, reporters/broadcasters, etc. can directl y monitor the received sound signals without troublesom e cables or monitor speakers being required. I ...
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Sennheiser SR 3256 - page 8
7 The channel bank system The SR 3254/SR 3256 transmitter 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 transmitter has two channel banks with up to 16 switchable channels each. The channels of the channel bank “F“ ( f i x e ...
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Sennheiser SR 3256 - page 9
8 Overview of operating controls Note: Connections and operating cont rols marked with a star ( ) in the above ill ustration are those for the second transmitter of th e SR 3256 twin transmitter. Headphone output, ¼” (6.3 mm) jack socket Headphone volume control LCD bargraph for deviation of the left channel (DEV L ), with overmo ...
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Sennheiser SR 3256 - page 10
9 Indications and displays Alphanumeric display “ FREQUENCY MHZ ” display “ CHANNEL ” display LC dot CHANNEL LC dot TUNE LC dot MONO/STEREO LC dot STEREO (transmitter is set to stereo operation) LC dot MONO (transmitter is set to mono operat ion) MUTE display (tran smitter is mute d) 6-step barg raph ...
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Sennheiser SR 3256 - page 11
10 Preparing the transmitter for use Using the transmitter as a stand-alone unit Mounting the transmitter feet T o ensure that the transmitter cannot slip on the surface on which it is placed, four self-a dhesive soft rubber feet are supplied. 왘 Ensure that the base of the tr ansmitter is clean and free from grease before mounting the rubber feet ...
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Sennheiser SR 3256 - page 12
11 Rack-mounting several transmitters You can use the supplied rack mount “ears” to mount the transmitter into a 19" rack (1 U). If you wish t o mount the antennas to the front of the rack, use the GA 3030- AM antenna mount (see “Accessories” on page 29). When rack-mounting the device, please consider that, during operation, the ambien ...
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Sennheiser SR 3256 - page 13
12 Setting up the transmitters The SR 3254 and SR 3256 transmitters heat up during operation. y V entilation in fixed installatio ns Ensure sufficient ventilation, espe cially when the tr ansmitters are mounted into a desk or chassis. Prov ide fo r a duct of sufficient size to ensure a fr ee air flow between the trans- mitters. y Sufficient ventila ...
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Sennheiser SR 3256 - page 14
13 Rack-mounting the transmitter and mounting the antennas to the front of t he rack 왘 Mount the antenna holders to the handles of the transmitter as shown in the diagram on the left. 왘 Hook the two rack mo unt “ears” " to the rear of the transmitter. 왘 Pull the cables of the antenn a holders through the holes in the rack mo unt “e ...
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Sennheiser SR 3256 - page 15
14 Connecting the transm itter to the mains The transmitte r can be connected to 230 V or 115 V AC. Before you plug the mains connector into the wall socket, please first check that the t ransmitter is set to the correct mains volt age! The set voltage is shown at the top of the fuse holder . Selecting the mains voltage T o select the mains vol ...
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Sennheiser SR 3256 - page 16
15 Connecting the mains cable 왘 Insert the supplied mains ca ble into the socket on t he transmitter and pass the cable through the cable grip. Note A cable grip is particularly important when the transmitter is permanently rack-mount ed. Inside the rack there are of ten a large number of cables – a cable grip prevents the cables from pulling e ...
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Sennheiser SR 3256 - page 17
16 Mounting and connect ing remote antennas Use a remote antenna when the transmitte r position is not the best antenna position for op timum transmission. Y ou can choose between two antennas (see “Accessories” on page 29): y A 2003 UHF passive directional ante nna y A 1031 passive omni-directional antenna Use a low-attenuation 50- Ω cable to ...
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Sennheiser SR 3256 - page 18
17 Using the transmitter Switching the transmitter on/off 왘 Press the POWER button to switch the transmitter on or off. Af ter switch-on, the LC display is backlit and the last transmission frequenc y set is displayed. Until the PLL has l ocked on the desired transmission frequency, the transmitter is muted. “MUTE” appears o n the display ...
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Sennheiser SR 3256 - page 19
18 Connecting the h eadphones/monitoring the audio signal Attention! High volume! Even short exposur e to high volume levels can damage your hearing! Set the volume for th e connected headphones to the minimum before putting the headphones on. Do no t listen at higher volume levels than wi th loudspeakers. 왘 Connect headphones with a ¼“ (6.35 ...
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Sennheiser SR 3256 - page 20
19 The operating menu of the transmitter Via the operating menu, yo u can quickly an d easily change the following settings: The buttons In the operating menu, all settings can be ma de using the 왖 , 왔 and SET buttons: Canceling an entry When in the setting mode of a menu, you can cancel your entry at any time by pressing the 왖 and 왔 button ...
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Sennheiser SR 3256 - page 21
20 Overview of the operating menu Display mode Setting mode Press SET for 1 sec. SET SET SET Current channel : U 1... U 16, F 1... F16 SET : Selects the channel : T ransmission frequency in steps of 5 kHz Current frequency SET Changing the channel Current channel or current frequency : U 1... U 16, F 1... F16 Switching between mono and stereo opera ...
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Sennheiser SR 3256 - page 22
21 TUNE Selecting the frequencies to be stored in the channel bank “U” Via the “ TUNE ” menu, you can freely select the frequencies to be stored in the channel bank “U” (user bank). 왘 Press the 왖 / 왔 buttons to select the “ TUNE ” menu. The LC dot “ TUNE ” lights up. 왘 Press the SET button to get into the setting mod ...
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Sennheiser SR 3256 - page 23
22 CHANNEL Selecting a channel from the channel bank “U” or “F” 왘 Press the 왖 / 왔 buttons to select the “ C HANNEL ” menu. The LC dot “ CHANNEL ” and the “ CHANNEL ” display light up. 왘 Press the SET button to get into the setti ng mode. 왘 Press the 왖 / 왔 buttons to select the desi red channel. 왘 Press th ...
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Sennheiser SR 3256 - page 24
23 Care and maintenance Cleaning the transmitter 왘 Before cleaning, disconnect th e transmitter from t he mains. 왘 If necessary, you can clean the transm itter with a slightly damp cloth. Do not use any cl eansing agents or solvents. Replacing the fuse 왘 Disconnect the transmitter completely from the mains by pulling out the mains connecto r ...
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Sennheiser SR 3256 - page 25
24 If the replacement fuse also bl ows, please cont act your local Sennheiser agent or send the transmitter, with a precise description of the trouble, to a Sennheiser se rvice partne r in your area. Y ou can find the ad dress of your nearest service partner in the enclosed servic e card or on the Internet at “http://www.sennheiser.com/sennheiser ...
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Sennheiser SR 3256 - page 26
25 If problems occur ... Error checklist I f p r o b l e m s o c c u r t h a t a r e n ot li s t e d i n t h e above table or if the problems cannot be solved with the proposed solu tion s, please con tact your local Sennheiser agent for assistance. Problem Possible cause Possible solution No operat ion indicatio n No mains co nnection Check the co ...
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Sennheiser SR 3256 - page 27
26 Additional information HDX noise reducti on Progress you can hea r: The product fami ly 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 sy stem which compresses the audio signal in the t ...
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Sennheiser SR 3256 - page 28
27 Specifications Note: The above data also apply to the second transmitter in the SR 3256. RF characteristics Frequency ranges 518–554, 626–662, 7 40–776, 786–822, 830–866 MHz Transmission 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 ...
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Sennheiser SR 3256 - page 29
28 Connector assignment Overall unit Power suppl y 115/230 V AC +10 % / –15 % Power consumption SR 3254 max. 13 W Power consumption SR 3256 max. 23 W Dimensions (without rack moun t “ears”) 436 x 228 x 43 mm (19", 1 U) W eight SR 3254 approx. 3,300 g W eight SR 3256 approx. 4,000 g T ype approval USA: FCC-Part 74.861 FCC ID: DMOSREK3K Ca ...
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Sennheiser SR 3256 - page 30
29 Accessories AC 3000-EU Active Antenna combin er Cat. no. 009424 AC 3000-UK Active Antenna combin er Cat. no. 009410 AC 3000-US Active Antenna combiner C at. no. 094409 A 1031-U Passive omni -directional antenna Cat. no. 004645 GA 3030-AM Antenna mount Cat. n o. 004368 A 2003 UHF Passive directional antenn a Cat. no. 003658 GZL 1019 A5 BNC-BNC co ...
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Sennheiser SR 3256 - page 31
30 Manufacturer declarations W arranty regulations The guarantee period for this Sennheiser product is 24 m o n t h s f r o m t h e d a t e o f p u r c h a s e . E x c l u d e d a r e accessory items, rechargeable or di sposabl e batteries that are delivere d with the product; due to their characteristics these products have a shorter service life ...
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Sennheiser SR 3256 - page 32
Sennheiser electronic GmbH & Co. KG 30900 Wedemark, Germany Phone +49 (5130) 600 0 Fax +49 (5130) 600 300 www.sennheiser.com P r i n t e d i n G e r m a n y Pu b l . 0 9 / 0 6 51 3 6 3 1 / A 0 2 ...
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