EM300
Instruction manual
Contents
Contents |
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Important safety instructions .................................................................................................................. |
2 |
The EM 300 G3 rack-mount receiver ....................................................................................................... |
5 |
Areas of application ............................................................................................................................... |
5 |
The frequency bank system ................................................................................................................. |
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Delivery includes .......................................................................................................................................... |
8 |
Product overview ......................................................................................................................................... |
9 |
Overview of the EM 300 G3 receiver .................................................................................................. |
9 |
Overview of the displays .................................................................................................................... |
10 |
Putting the receiver into operation ...................................................................................................... |
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Preparing the receiver for use ........................................................................................................... |
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Connecting an amplifier/mixing console ......................................................................................... |
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Connecting receivers in a network ................................................................................................... |
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Connecting the mains unit ................................................................................................................. |
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Using the receiver ...................................................................................................................................... |
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Switching the receiver on/off ............................................................................................................ |
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Monitoring the audio signal via headphones ................................................................................. |
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Synchronizing a transmitter with the receiver .............................................................................. |
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Deactivating the lock mode temporarily ......................................................................................... |
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Muting the audio signal ...................................................................................................................... |
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Selecting a standard display .............................................................................................................. |
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Using the operating menu ...................................................................................................................... |
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The buttons ........................................................................................................................................... |
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Overview of the operating menu ...................................................................................................... |
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Working with the operating menu ................................................................................................... |
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Adjustment tips and functions .............................................................................................................. |
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Doing a soundcheck ............................................................................................................................. |
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The main menu “Menu” ...................................................................................................................... |
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The extended menu “Advanced Menu” .......................................................................................... |
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Synchronizing transmitters with receivers ......................................................................................... |
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Synchronizing a transmitter with the receiver – individual operation ..................................... |
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Synchronizing transmitters with receivers – multi-channel operation .................................... |
46 |
Cleaning the receiver ................................................................................................................................ |
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Recommendations and tips .................................................................................................................... |
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If a problem occurs ... ................................................................................................................................ |
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Accessories and spare parts .................................................................................................................... |
53 |
Specifications ............................................................................................................................................. |
55 |
Manufacturer Declarations ..................................................................................................................... |
58 |
Index ............................................................................................................................................................. |
60 |
An animated instruction manual can be viewed on the EM 300 G3 product page on our website at www.sennheiser.com.
1
Important safety instructions
Important safety instructions
•Read this instruction manual.
•Keep this instruction manual. Always include this instruction manual when passing the product on to third parties.
•Heed all warnings and follow all instructions in this instruction manual.
•Only clean the product when it is not connected to the mains. Use a cloth for cleaning.
•Refer all servicing to qualified service personnel.
Servicing is required if the product has been damaged in any way, liquid has been spilled, objects have fallen inside, the product has been exposed to rain or moisture, does not operate properly or has been dropped.
•WARNING: To reduce the risk of short circuits, do not use the product near water and do not expose it to rain or moisture. Do not place objects filled with liquids, such as vases or coffee cups, on the product.
•Only use the supplied mains unit.
•Unplug the mains unit from the wall socket
–to completely disconnect the product from the mains,
–during lightning storms or
–when unused for long periods of time.
•Only operate the mains unit from the type of power source specified in the chapter “Specifications” (see page 54).
•Ensure that the mains unit is
–in a safe operating condition and easily accessible,
–properly plugged into the wall socket,
–only operated within the permissible temperature range,
–not covered or exposed to direct sunlight for longer periods of time in order to prevent heat accumulation (see “Specifications” on page 54).
•Do not block any ventilation openings. Install the product in accordance with the instructions given in this instruction manual.
•Do not install the product near any heat sources such as radiators, stoves, or other devices (including amplifiers) that produce heat.
•Only use attachments/accessories specified by Sennheiser.
2
Important safety instructions
Overloading
Do not overload wall outlets and extension cables as this may result in fire and electric shock.
Replacement parts
When replacement parts are required, be sure the service technician uses replacement parts specified by Sennheiser or those having the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.
Danger due to high volumes
This product 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 hearing damage. The following are sure signs that you have been subjected to excessive noise for too long a time:
•You can hear ringing or whistling sounds in your ears.
•You have the impression (even for a short time only) that you can no longer hear high notes.
3
Important safety instructions
Intended use
Intended use of the ew 300 G3 series products includes:
•having read these instructions especially the chapter “Important safety instructions”,
•using the products within the operating conditions and limitations described in this instruction manual.
“Improper use” means using the products other than as described in this instruction manual, or under operating conditions which differ from those described herein.
4
The EM 300 G3 rack-mount receiver
The EM 300 G3 rack-mount receiver
This receiver is part of the evolution wireless series generation 3 (ew G3). With this series, Sennheiser offers high-quality state-of-the-art RF transmission systems with a high level of operational reliability and ease of use. Transmitters and receivers permit wireless transmission with studioquality sound.
Features of the evolution wireless 300 G3 series:
•Optimized PLL synthesizer and microprocessor technology
•HDX noise reduction system
•Pilot tone squelch control
•True diversity technology
•Switching bandwidth of 42 MHz
•Safe configuration of a multi-channel system via a network
•Scan function (Easy Setup) for scanning the frequency banks for unused channels
Areas of application
The receiver can be combined with the following optional components of the ew G3 series (see “Accessories and spare parts” on page 52):
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EM 300 G3 |
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Clip-on microphones: |
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ME 2, ME 4 |
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Headmic: |
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ME 3 |
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Instrument/line cable: |
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CI 1, CL 1 |
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SKM 300 G3 |
Interchangeable microphone heads: |
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• MMD 835-1, MMD 845-1 |
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B.Ch: 20.24 |
ew300 G3 |
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MME 865-1 |
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EQ |
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5
The EM 300 G3 rack-mount receiver
The devices are available in the same UHF frequency ranges and are equipped with the same frequency bank system with factory-preset frequencies. An advantage of the factory-preset frequencies is that
•a transmission system is ready for immediate use after switch-on,
•several transmission systems can be operated simultaneously on the preset frequencies without causing intermodulation interference.
The frequency bank system
The receiver is available in 6 UHF frequency ranges with 1,680 frequencies per frequency range:
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Range A: |
Range G: |
Range B: |
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Range C: |
Range D: |
Range E: |
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516 – 558 |
566 – 608 |
626 – 668 |
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734 – 776 |
780 – 822 |
823 – 865 |
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Each frequency range (A–E, G) offers 26 frequency banks with up to 24 channels each:
Channel 1 – frequency preset
Channel 2 – frequency preset
Frequency bank 1 ... 20
Channel 24 – frequency preset
Channel 1 – freely selectable frequency
Channel 2 – freely selectable frequency
Frequency bank U1 ... U6
Channel 24 – freely selectable frequency
6
The EM 300 G3 rack-mount receiver
Each of the channels in the frequency banks “1” to “20” has been factorypreset to a fixed frequency (frequency preset).
The factory-preset frequencies within one frequency bank are intermodu- lation-free. These frequencies cannot be changed.
For an overview of the frequency presets, please refer to the supplied frequency information sheet. Updated versions of the frequency information sheet can be downloaded from the EM 300 G3 product page on our website at www.sennheiser.com.
The frequency banks “U1” to “U6” allow you to freely select and store frequencies. It might be that these frequencies are not intermodulationfree (see page 46).
7
Delivery includes
Delivery includes
The packaging contains the following items: 1 EM 300 G3 rack-mount receiver
1NT 2-3 mains unit with one country adapter
2rod antennas
1 GA 3 rack adapter
1 instruction manual
1 frequency information sheet
4 device feet
8
Product overview
Product overview
Overview of the EM 300 G3 receiver
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A
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PEAK0 |
B.Ch: 20.24 |
ew300 G3 |
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-10 |
531.375MHz |
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-30 |
EQ |
SKM300 |
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P + 12dB |
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RF |
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B
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A Operating elements – front panel
Headphone output,
¼” (6.3 mm) jack socket (
)Headphone volume control
button, backlitInfra-red interface
Display panel, backlit in orangeJog dial
STANDBY button
with operation indication
(red backlighting); ESC function (cancel)
B Operating elements – rear panel
Antenna input II (ANT II) with remote power supply input, BNC socket
Type plate
Antenna input I (ANT I) with remote power supply input, BNC socket
Audio output (AF OUT UNBAL),
¼” (6.3 mm) jack socket, unbalanced
Audio output (AF OUT BAL), XLR-3M socket, balanced
LED (yellow) for network activity indication
LAN socket (ETHERNET RJ 45)
Cable grip for power supply DC cable
DC socket (DC IN) for connection of NT 2-3 mains unit
9
Product overview
Overview of the displays
After switch-on, the receiver displays the standard display “Receiver Parameters”. For further illustrations and examples of the different standard displays, please refer to page 25. This standard display displays the operating states of the receiver and provides the most important information on the received transmitter – provided the transmitter supports this function.
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PEAK0 |
B.Ch: 20.24 |
ew300 G3 |
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531.375MHz |
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-30 |
EQ |
SKM300 |
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P + 12dB MUTE |
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AF |
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Transmitter/ |
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Display |
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Meaning |
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RF level “RF” |
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Diversity display: |
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(Radio Frequency) |
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Antenna input I is active |
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Antenna input II is active |
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RF signal level: |
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Field strength of the received signal |
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RF |
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Squelch threshold level |
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Audio level “AF” |
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Modulation of the transmitter |
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PEAK |
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with peak hold function |
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page 36) |
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When the display for audio level |
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-20 |
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shows full deflection, the audio level |
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-30 |
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-40 |
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is excessively high. When the trans- |
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AF |
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mitter is overmodulated frequently |
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or for extended periods of time, the |
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“PEAK” display is shown inverted. |
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Frequency bank and |
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Current frequency bank and channel number |
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channel (see page 35) |
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10
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Product overview |
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Transmitter/ |
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Meaning |
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Frequency |
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Current receiving frequency |
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(see page 35) |
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Name (see page 36) |
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Freely selectable name of the receiver |
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Pilot tone “P” |
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Activated pilot tone evaluation |
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(see page 40) |
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Equalizer setting |
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Current equalizer setting |
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Output gain |
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Current output gain of the audio signal avail- |
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able at the ¼” (6.3 mm) jack socket / |
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XLR-3M socket |
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Muting function |
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Audio signal is muted |
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“MUTE” |
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(see page 24) |
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Transmitter type |
Transmitter |
Product name of the linked ew G3 transmitter |
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The product name is displayed only if the |
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transmitter supports this function. |
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Battery status |
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Charge status: |
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approx. 100% |
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approx. 70% |
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approx. 30% |
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battery icon is flashing; charge statu |
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is critical |
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When the charge status is critical, “Low |
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Battery” appears on the standard display. |
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Lock mode icon |
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Lock mode is activated |
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(see page 37) |
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11
Putting the receiver into operation
Putting the receiver into operation
Preparing the receiver for use
Recommendations for optimum reception
To ensure optimum reception even under difficult conditions, we recommend connecting remote antennas and, if necessary, using antenna splitters (see “Accessories and spare parts” on page 52).
When rack-mounting the receiver, you can mount the supplied antennas to the front of the rack by using an antenna front mount kit. When mounting more than one receiver into a rack, you should use remote antennas.
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If you want to mount the receiver into a 19” rack: |
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Read the corresponding chapter on page 14. |
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If you want to set up the receiver on a flat surface: |
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Read the next chapter. |
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Setting up the receiver on a flat surface |
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CAUTION! |
Risk of staining of furniture surfaces! |
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Some furniture surfaces have been treated with varnish, polish or |
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synthetics which might cause stains when they come into contact with |
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other synthetics. Despite a thorough testing of the synthetics used by us, |
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we cannot rule out the possibility of staining. |
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Do not place the receiver on delicate surfaces. |
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Mounting the rack mount “ears”
The rack mount “ears” are designed to help protect the operating elements from damage or deformation, e.g. if the receiver is dropped. Therefore, fasten the rack mount “ears”, even if you do not want to rack mount your receiver.
To fasten the rack mount “ears” :
Unscrew and remove the two recessed head screws (M4x8) on each side of the receiver (see left-hand diagram).
12
Putting the receiver into operation
Secure the rack mount “ears” to the sides of the receiver using the previously removed recessed head screws (see right-hand diagram).
Fitting the device feet
Connecting the
rod antennas
Do not fit the device feet when mounting the receiver into a 19” rack.
Clean the base of the receiver where you want to fix the device feet.
Fit the device feet to the four corners of the receiver as shown.
Place the receiver on a flat, horizontal surface.
The supplied rod antennas can be mounted quickly and easily and are suitable for all applications where – good reception conditions provided – a wireless transmission system is to be used without a large amount of installation work.
Connect the two rod antennas to the BNC sockets and at the rear of the receiver.
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EM |
500 |
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EM |
500 |
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RECEIVER |
MHz |
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RECEIVERXXX MHz |
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TRUE |
DIVERSITY |
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- XXX |
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TRUE DIVERSITY X: XXX |
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. RANGE- |
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FREQ. RANGEXXXXXX |
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FREQ. NO.: |
XXXXXX |
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IDENT. NO.: |
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IDENT |
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XXXXXXXXXX |
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SER. |
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XXXXXXXXXX |
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SER. NO.: |
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XXXXXXX |
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XXXXXXX |
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IC: 2099A |
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IC: 2099A |
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IN USA |
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IN USA |
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0682ASSEMBLED |
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0682ASSEMBLED |
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DESIGNED |
IN GERMANY, |
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DESIGNED |
IN GERMANY, |
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Align the rod antennas upwards in a V-shape.
When using more than one receiver, we recommend connecting remote antennas and, if necessary, using Sennheiser antenna accessories. Fore more information, visit the ew G3 product page at www.sennheiser.com.
13
Putting the receiver into operation
Mounting the receiver into a 19” rack
Do not fit the device feet when mounting the receiver into a 19” rack.
CAUTION! |
Risks when rack mounting the receiver! |
When installing the device in a closed or multi-rack assembly, please consider that, during operation, the ambient temperature, the mechanical loading and the electrical potentials will be different from those of devices which are not mounted into a rack.
Make sure that the ambient temperature within the rack does not exceed the permissible temperature limit specified in the specifications (see page 54).
Ensure sufficient ventilation; if necessary, provide additional ventilation.
Make sure that the mechanical loading of the rack is even.
When connecting to the power supply, observe the information indicated on the type plate. Avoid circuit overloading. If necessary, provide overcurrent protection.
When rack mounting, please note that intrinsically harmless leakage currents of the individual mains units may accumulate, thereby exceeding the allowable limit value. As a remedy, ground the rack via an additional ground connection.
Rack mounting |
Secure the rack mount “ears” of the supplied GA 3 rack adapter to |
one receiver |
the receiver as described on page 12. |
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Secure the blanking plate of the supplied GA 3 rack adapter to one |
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of the rack mount “ears” using two recessed head screws (M 6x10). |
14
Putting the receiver into operation
Connect the antennas. You have the following options:
– You can connect the supplied rod antennas to the rear of the receiver (see page 13). In this case, insert the two blanking plugs 
into the holes of the blanking plate (see diagram above).
– You can use the AM 2 antenna front mount kit (see “Accessories and spare parts” on page 52) and mount the rod antennas to the blanking plate 
(see diagram below).
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When using more than one receiver, we recommend connecting remote antennas and, if necessary, using Sennheiser antenna accessories. Fore more information, visit the ew G3 product page at www.sennheiser.com.
15
Putting the receiver into operation
Rack mounting two receivers
To mount the receiver into a 19” rack:
Slide the receiver with the mounted blanking plate 
into the 19” rack.
Secure the rack mount “ears” to the 19” rack.
If you are using the supplied rod antennas:
Align the antennas in a V-shape to obtain the best possible reception.
When rack mounting two receivers side by side, you can only front mount the antennas when using the ASA 1 antenna splitter in conjunction with the AM 2 antenna front mount kit and an additional GA 3 rack adapter (see “Accessories and spare parts” on page 52).
We recommend using remote antennas.
To mount the receivers into a rack using the GA 3 rack adapter:
Place the two receivers side by side upside-down onto a flat surface.
Secure the jointing plate 
to the receivers using six recessed head screws (M 3x6).
Secure the rack mount “ears” to the receivers as described on page 12.
16
Putting the receiver into operation
To mount the antennas:
Use remote antennas, if necessary in conjunction with the ASA 1 antenna splitter (see “Accessories and spare parts” on page 52).
To mount the receivers into the rack:
Slide the receivers into the 19” rack.
Secure the rack mount “ears” to the 19” rack.
Connecting an amplifier/mixing console
TRUE DIVERSITY RECEIVER EM 300 
FREQ. RANGE-X: XXX - XXX MHz
IDENT. NO.: XXXXXX SER. NO.: XXXXXXXXXX IC: 2099A-XXXXXXX
0682
DESIGNED IN GERMANY, ASSEMBLED IN USA
The receiver’s ¼” (6.3 mm) jack socket and XLR-3M socket are connected in parallel, allowing you to simultaneously connect two devices (e.g. amplifier, mixing console) to the receiver.
Use a suitable cable to connect the amplifier/mixing console to the ¼” (6.3 mm) jack socket or the XLR-3M socket .
For detailed information on balanced and unbalanced connection, please refer to the chapter “Connector assignment” on page 56.
17
Putting the receiver into operation
Connecting receivers in a network
You can connect several receivers in a network. The receivers are remote controlled via a PC running the “Wireless Systems Manager” (WSM) software. This software will assist in the quick and safe configuration of multichannel systems.
For further information on downloading the software, visit the ew G3 product page on our website at www.sennheiser.com.
TRUE DIVERSITY RECEIVER EM 300 
FREQ. RANGE-X: XXX - XXX MHz
IDENT. NO.: XXXXXX SER. NO.: XXXXXXXXXX IC: 2099A-XXXXXXX
0682
DESIGNED IN GERMANY, ASSEMBLED IN USA
Connect a standard network cable (at least Cat 5) to the LAN socket of the receiver.
Connect your receivers to an Ethernet switch.
Additionally, connect a PC to the Ethernet switch as shown.
Set up your multi-channel system as described on page 45.
The yellow LED at the rear of the receiver indicates the network activity:
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Connection status |
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... lit |
Network cable connected to the Ethernet |
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switch or PC |
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... off |
No connection |
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