Sennheiser Freeport User manual

Bedienungsanleitung
Instructions for use
Notice d‘emploi
Instrucciones de uso

Bedienungsanleitung.......................................................................................................3
Instructions for use ....................................................................................................... 15
Notice d’emploi ............................................................................................................. 27
Instrucciones de uso..................................................................................................... 39

15
Instructions for use

16
Contents
Safety instructions ...........................................................................16
The freePORT systems .....................................................................17
Delivery includes ........................................................................18
EM 1 receiver .....................................................................................18
SK 2 bodypack transmitter .............................................................20
SKM 3 radio microphone .................................................................22
Optimizing the system ....................................................................23
Care and maintenance .....................................................................24
If problems occur... ..................................................................... 25
Accessories and variants ................................................................25
Specifications of the freePORT systems ......................................26
Connector assignment ..............................................................26
Safety instructions
Never open electronic units! If units are opened by customers in breach
of this instruction, the warranty becomes null and void.
Keep the units away from central heating radiators and electric heaters.
Never expose them to direct sunlight.
Use the units in dry rooms only.
Use a damp cloth for cleaning the units. Do not use any cleansing agents
or solvents.
Thank you for choosing Sennheiser!
We 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 these instructions carefully, as we
want you to enjoy your new Sennheiser products quickly and to the
fullest.

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The freePORT systems
Designed for different areas of application, the freePORT systems are
available in three variants.
yPresentation Set:
This system is ideal for presentation applications. The unobtrusive
ME 2 clip-on microphone is virtually invisible.
yInstrument Set:
This system is for connecting musical instruments (e.g. guitar) which
have a ¼” (6.3 mm) jack socket directly to the bodypack transmitter.
yVocal Set:
This system is ideal for vocal and speech applications.
Transmitters and receivers of the freePORT systems have four factory-
preset frequencies for direct channel selection – ready for immediate
use after switch-on.
The freePORT systems are available in three UHF frequency ranges:
yFrequency range A: 719 to 721 MHz
yFrequency range C: 742.5 to 744.5 MHz
yFrequency range E: 863 to 865 MHz
Hinweise:
The Frequency ranges A and C can only be used in certain areas in
the EU and must be licensed with the regulating authorities. Fre-
quency E is license-free in most EU countries (i.e. ETSI signatory
countries).
Please be legal and observe the country-specific regulations of the
licensing authorities. Sennheiser are not responsible if you operate
illegally.
To avoid interfering with other users, the transmitter should be
switched off when not in use.
Features of the freePORT systems:
yUp to four transmission links per frequency range which can be
operated simultaneously
yReliable transmission technology
yDiversity technology for minimizing dropouts in the reception
yAdjustable squelch for eliminating RF interference
yRugged housings
yCrystal-clear reception due to dynamic processor

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Delivery includes
EM 1 receiver
FreePORT systems
EM 1 receiver SK 2 bodypack transmitter SKM 3 radio microphone Mains unit ME 2 clip-on microphone ¼” (6.3 mm) jack cable
Stand mount Instructions for use
Presentation Set (Model No. 21101) XX XX X
Instrument Set (Model No. 21104) XXXXX
Vocal Set (Model No. 21105) XXX XX

Operating controls
Antenna A
Operation indication, green LED (POWER)
RF level indication, four green LEDs
(RF LEVEL)
Channel selector switch CHANNEL (1 to 4)
Diversity indication, yellow LED A
(lights up if antenna is active)
Diversity indication, yellow LED B
(lights up if antenna is active)
AF PEAK, red LED (lights up if the audio
level is too high)
Antenna B
Audio output, XLR-3M socket, balanced
(AUDIO OUTPUT XLR BAL)
Audio output, ¼” (6.3 mm) jack socket,
unbalanced (AUDIO OUTPUT UNBAL)
Audio output level control (GAIN)
Squelch threshold control (SQUELCH)
DC socket for connection of mains unit
(DC 11–18 V IN, 100 mA)
Type plate
Serial number

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Connecting the receiver
왘Insert the DC connector on the mains cable into the DC socket  and
connect it to the mains. The green LED for operation indication
(POWER) lights up and the receiver is ready for operation.
왘To deactivate the receiver, remove the mains plug from the mains
outlet.
Aligning the antennas
왘Set up the antennas and align them upwards in a V-shape.
The LEDs Aand Bindicate which diversity section (i.e. which
antenna) is active.
Connecting the amplifier/mixing console
왘Connect the amplifier/mixing console to the XLR-3M socket or
the ¼” (6.3 mm) jack socket .
왘Use the GAIN control  to adapt the level of the audio output to the
input of the amplifier or mixing console. The adjusted audio output
level is common for both sockets. If the level is adjusted too high,
the audio signal will be distorted. If, on the other hand, the level is
adjusted too low, this will result in an audio signal with high
background noise.
Selecting and changing a channel
You can change the channel on the receiver during running operation.
The receiver then immediately receives on the new channel.
왘Use a small screwdriver to set the channel selector switch to the
desired channel. You can switch between four different channels
(see “Selecting a channel” on page 24).

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SK 2 bodypack transmitter
Inserting/replacing the battery
We recommend powering the bodypack transmitter by a 9 V PP3
alkaline battery (IEC 6 LR 61). If powered by a rechargeable 9 V battery,
the operating time will be drastically reduced.
왘Open the battery compartment by first sliding the battery
compartment cover in the direction of the arrow. Then flip the
battery compartment cover open.
왘Insert the battery as shown. Please observe correct polarity when
inserting the battery.
왘Close the battery compartment.
Note:
When the red LED goes off during operation, you must replace
the battery as soon as possible.
Operating controls
ON/OFF button
Operation and battery status indication, red LED
Microphone/instrument input,
3.5 mm jack socket (lockable)
Antenna (can be screwed off)
Battery compartment cover
MIC/INST slide switch
Serial number
Channel selector switch CH (1 to 4)
Sensitivity control GAIN
Type plate
Belt clip


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Connecting the microphone/instrument cable
The audio input is designed for the connection of both the ME 2 clip-on
microphone and instruments (e.g. guitars).
왘Connect the 3.5 mm jack plug from the microphone/instrument
cable to the 3.5 mm jack socket .
왘Check the setting of the MIC/INST slide switch which allows you
to switch between microphone and instrument operation. If
necessary, readjust the setting.
왘Use the GAIN control  to adjust the transmitter sensitivity so that
the receiver receives a good audio signal (no distortion and no
background noise).
Attaching and positioning the microphone
Use the microphone clip to attach the ME 2 clip-on microphone to
clothing (e.g. tie, lapel). Conduct the microphone cable so that noise due
to friction is avoided and make sure that the antenna and the cable do
not cross. The omni-directional microphone picks up sound equally from
all directions. However, it should be attached as close as possible to the
sound source.
Attaching the bodypack transmitter to clothing
왘Use the supplied belt clip to attach the bodypack transmitter to
clothing. Make sure that the antenna is at least 1 cm away from the
body and is not kinked.
Switching the bodypack transmitter on/off
왘Press the ON/OFF button to switch the bodypack transmitter on
or off. If the bodypack transmitter is switched on, the red LED 
lights up.
Note:
Remove the battery when the transmitter will not be used for
extended periods of time.
Selecting and changing a channel
왘Switch off the transmitter before you change the channel.
왘Use a small screwdriver to set the channel selector switch to the
desired channel. You can switch between four different channels.
When you switch on the bodypack transmitter again, it will transmit
on the new channel (see “Selecting a channel” on page 24).

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SKM 3 radio microphone
Note:
The microphone head of the radio microphone cannot be changed.
Inserting/replacing the battery
We recommend powering the radio microphone by a 9 V PP3 alkaline
battery (IEC 6 LR 61). If powered by a rechargeable 9 V battery, the
operating time will be drastically reduced.
왘Turn the locking ring of the battery compartment in the direction
of the arrow.
왘Pull the body of the radio microphone in the direction of the
arrow as far as it will go.
왘Insert the battery as shown. Please observe correct polarity when
inserting the battery.
왘Close and lock the radio microphone.
Note:
When the red LED goes off during operation, you must replace
the battery as soon as possible.
Operating control
Sound inlet basket
Locking ring of battery compartment
Body of radio microphone
Battery compartment (not visible from
outside)
Antenna (can be screwed off)
Operation and battery status indication,
red LED (POWER)
ON/OFF switch
Channel selector switch CH (1 to 4)
Type plate
Serial number