Sennheiser EM 550 G2 manuale d’uso

EM 550 37 Instructions for use EM_550_G2.book Seite 37 Donnerst ag, 27. November 2003 1:33 13[...]

38 Thank you for choosing Sennheiser! W e have designed this product to give you reliable operation over many years. Over half a century 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 t hese instructions c[...]

39 Contents The EM 550 G2 twin receiver .................... .................................. ......................... 40 The channel bank system .............. ........................................ ..................... .................. 40 Safety instructions ........ ................................................................ .......[...]

40 The EM 550 G2 twin receiver The EM 550 G2 twin receiver consists of two complete true diversity receivers in a single 19” rack housing. The two receivers can be operated independently from each other. The EM 550 G2 has an integrated antenna splitter, enabling you to daisy-chain up to eight twin receivers. The EM 550 G2 can be combined with tra[...]

41 The channel bank “U” (user bank) allows you to store your selection out of 1,440 receiving frequencies that are freely selectable within the preset frequency range. Safety instructions Never open an electronic unit! If units are opened by customers in breach of this instruction, the warranty becomes null and void. Keep the unit away from cen[...]

42 Areas of application The EM 550 G2 twin receiver can be combined with transmitters of the ew 500 G2 series (SK 500 G2 bodypack transmitter, SKM 500 G2 radiomicrophone or SKP 500 G2 plug-on transmitter). The transmitters are available in the same five UHF frequen cy ranges and are equipped with the same channel bank system with factory-preset fre[...]

43 Overview of operating controls The EM 550 G2 consists of two complete receivers (RX A and RX B) in a 19” ra ck housing. The two receivers can be operated independently from each other, therefore all operating controls are available separately for each receiver. Operating controls Graphic display panel  Headphone output (PHONES), ¼” (6.3 [...]

44 Indications and displays Each receiver of the EM 550 G2 prov ides information on its own operating states and those of the received ew 500 G2 transmitter (remote displays). Indications and displays of the receivers “PILOT” display The “PILOT” display  appears on the display panel when the pilot tone evaluation is activated (see “Act[...]

45 “MUTE” display The “MUTE” display  appears on the display panel and the backlighting of the standard display switches from green to red. In addition, the text “MUTE” flashes in alternation with the standard display when y the RF signal of the received transmitter is too weak, y the received transmitter has been muted (with the pil[...]

46 Preparing the receiver for use Mounting the receiver feet T o ensure that the receiver cannot slip on the surface on which it is placed, four self-adhesive sof t rubber feet are supplied.  Ensure that the base of the receiver is clean and free from grease before mounting the rubber feet.  Fix the rubber feet to the base of the receiver by [...]

47 Essential notes on mounting remote antennas: y Position antennas in the same room in which the transmission takes place! y Maintain a minimum distance of 50 cm from metal objects (including reinforced-concrete walls)! y Maintain a minimum distance of 1 m between receiving antennas! Daisy-chaining up to eight twin receivers The twin receivers fea[...]

48 Connecting the amplifier/mixing console The two audio outputs of the twin receiver are available as transformer balanced XLR-3M sockets. You can conn ect an amplifier or a mixing console to each audio output.  Connect the amplifier/mixing console to the XLR-3M sockets AF OUT B  (receiver RX B) or AF OUT A  (receiver RX A).  Via the o[...]

49  Guide the BNC cable with the BNC connector through the hole on the rack mount “ear”.  Hook the two rack mount “ears” " to the rear panel of the twin receiver.  Secure the rack mount “ears” to the twin receiver using two of the supplied recessed head screws (M 3x6) respectively.  Screw the two BNC sockets # to the an[...]

50 Using the twin receiver Switching the twin receiver on/off Each receiver of the EM 550 G2 is sw itched on and off separately with the ON button. The receivers can only be swit ched off when the standard display is shown on the display panel. When in th e operating menu, briefly pressing the ON button will cancel your entry (ESC function) and ret[...]

51 The operating menu The operating menu is the same for both receivers of the EM 550 G2 and can be used almost intuitively. T o ensure that adjustments to the settings can be made quickly and “without looking”, the necessary operating steps for the twin receiver and the ew 500 G2 transmitters are similar. The buttons Overview of menus Buttons [...]

52 W orking with the operating menu By way of example of the “ Tune ” menu, this section describes how to use the operating menu. The operating steps fo r adjusting the settings via the menu are similar for both receivers of the EM 550 G2. Af ter switching the receiver RX A or RX B on, the standard display is shown on the display panel. Getting[...]

53 Operating menu of the receiver RX A or RX B of the twin receiver SET SET SET SET SET SET SET SET SET SET SET SET Stored Menu Exit Bank 1 Channel 01 Menu Bank 3 Channel 01 T une 786.400MHz Exit AF Out +18 Bank 3 .01 B.CH 790.250 MHz Bank 1 .01 B.CH 786.300 MHz Stored Stored Channel 3. 08 B.CH 807.900 MHz Channel 3. 01 B.CH 790.250 MHz Menu Channe[...]

54 SET SET SET SET Name OCAL Soundcheck is started, current RF and AF levels are displayed   /  : Low , Mid, High SET : Stores the setting Menu Scan AF Out + 1 8 Squelch High Doing the soundcheck Menu AF Out –20 Squelch Low Display Scan Reset AF Out +18 Stored Squelch Low Squelch High   /  : Main, Frequency , Bank/Channel, Name,[...]

55 SET SET SET SET Current frequency response   /  : Flat , Low Cut, Low Cut/High Boost, High Boost SET : Stores the setting Changing the frequency response Menu Lock Off Equalizer Flat LCD Contr IIIIII..... STORED Equalizer Flat Equalizer High Boost Name Bank 1   /  : On, Off SET : Stores the setting Menu Reset Pilot On Lock Off [...]

56 Adjustment tips for the operating menu The following adjustment tips refer to the operating menus of both receivers of the EM 550 G2. Switching between channel banks Bank Each receiver of the EM 550 G2 has nine channel banks between which you can switch via the “ Bank ” menu. The channel banks “1” to “8” have up to 20 switchable chan[...]

57 Scanning the channel banks for free channels Scan Before putting one or several transmis sion links into operation, you should scan the channel banks for free channels. Displaying a list of all free channels Via the “ Channel list “ menu, you can display the number of free channels for all channel banks.  Select the “ Scan ” menu. [...]

58 Multi-channel operation Combined with ew 500 G2 transmitters, the receivers can form transmission links that can be used in multi-channel systems. For multi-channel operation, only use the free channels in a channel bank. Before putting the transmission links into operation, we recommend performing an auto scan.  Scan one of the two receivers[...]

59 Doing the soundcheck Soundcheck By doing a soundcheck, you can check the reception area for field strength gaps (“dropouts”) which cannot be compensated for by the receiver’s diversity circuitry. You can do the soundcheck without the help of another person.  Switch the transmitter on.  Select the “ Soundcheck ” menu. The soundche[...]

60 Selecting the standard display Display Via the “ Display ” 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 made. The name can be displayed on the stan dar[...]

61  Press the SET button to change to the next segment and select the next character.  Have you entered the name completely? Press the SET b u t t o n t o s t o r e your setting and to return to the top menu level. Loading the factory-preset default settings Reset Via the “ Reset ” menu, you load the factory-preset default settings. Only [...]

62 Using the equalizer Equalizer Via the “ Equalizer ” menu, you can change the treble and bass of the audio signal available at the audio output AF OUT A (receiver RX A) or AF OUT B (receiver RX B): Adjusting the contrast of the graphic display LCD Contr Via the “ LCD Contr ” menu, you can adjust the cont rast of the graphic display in 16 [...]

63 T roubleshooting Error checklist If problems occur that are not listed in the above table or if the proble ms cannot be solved with the proposed solutions, please contact your local Sennheiser agent for assistance. Problem Possible cause Possible solution No operation indication No mains connection Check the connections of the mains cable No RF [...]

64 Recommendations and tips ... for optimum reception y T ransmission range depends to a larg e extent on location and can vary from about 10 m to about 150 m. There should be a “free line of sight” between transmitting and receiving antennas. y If, with the twin receiver, reception conditions are unfavourable, you should use two remote antenna[...]

65 Additional information HDX noise reduction Progress you can hear: The evolution wireless G2 series 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 110 dB. HDX is a wideband compander system wh ich compresses the audio si[...]

66 Squelch Pilot tone squelch The ew 500 G2 transmitters add a 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 pilot tone, the receiver’s audio output will remain muted, even if a strong RF signal is present. This prevents strong interfering sign als from causin[...]

67 Diversity reception The two receivers of the EM 550 G2 operat e on the “true diversity” principle: A receiving antenna receives not only the electromagnetic waves which reach it by a direct path, but also the reflections of these waves which are created in the room by walls, windows, ceilings and fittings. When these waves are superimposed, [...]

68 Specifications RF characteristics Modulation wideband FM Frequency ranges 518–554, 626–662, 740–776, 786–822, 830–866 MHz Receiving frequencies 8 channel banks with up to 20 factory-preset channels each 1 channel bank with up to 20 freely selectable channels (1,440 frequencies, tunable in steps of 25 kHz) Switching bandwidth 36 MHz Nom[...]

69 Connector assignment Accessories GA 3030 AM Antenna mount A 1031-U UHF antenna, passive, omni-directional, can be mounted onto a stand A 12-AD UHF-antenna, active, directional AB 2-A UHF antenna booster, 10 dB gain powered via ASP 2/NT 1 518–554 MHz AB 2-B 626–662 MHz AB 2-C 740–776 MHz AB 2-D 786–822 MHz AB 2-E 830–866 MHz GZL 1019-A1[...]

Sennheiser electronic GmbH & Co. KG 30900 W edemark, Germany Phone +49 (5130) 600 0 Fax +49 (5130) 600 300 www.sennheiser.com Printed in Germany Publ. 12/03 90676/A01 EM_550_G2.book Seite 212 Donnerst ag, 27. November 2003 1:33 13[...]