Sennheiser MIKROPORT SYSTEM 2015, SYSTEM 2015 User Manual

System 2015

Audiology | Personal FM System

Description

The 2015 Mikroport™ System allows the integration of people with hearing problems in schools and universities, at the workplace and in their free time. Design and characteristics of the 2015 Mikropor t™ System are ideally suited to the needs of the users. Operation is simple and easy to learn. The units are small, lightweight and unobtrusive when worn.

The operating principle of the 2015 Mikroport™ System

The speaker, for example the teacher, wears the SK 2015 transmitter. The person with hearing problems, the pupil in this case, wears the EK 2015 receiver. The receiver can be equipped either with a connecting cable for a hearing aid or with headphones. Without wires and with full freedom of movement, the pupil can now hear the teacher as if he were sitting right next to him. For the time in which the teacher is speaking, ambient noise is reduced markedly, so that the dialog between teacher and pupil has priority at all times. When the teacher is not speaking, the pupil can hear his fellow pupils either via the microphones in the hearing aid or via the internal microphone in the receiver. The 2015 Mikroport™ System gives reliable assistance, even in difﬁ cult listening situations. The transmitting power is sufﬁ cient for relatively large distances. The MKE 2015-2 screw-on microphone ensures a high degree of intelligibility. Loud background noise and bad acoustics are faded out by the ME 2015-H neckband microphone (optional accessory). The wide range of accessories allows the receiver to be connected to almost any hearing aid; it can be coupled to the latter either electrically or inductively. Transmitter and receiver are powered via the BA 2015 accupack. The operating time of the accupack is sufﬁ cient for a normal working day (up to 12 hours). The charging contacts on transmitter and receiver allow the units to be charged in the L 2015 charger without the necessity of removing the accupack. If no mains supply is available for recharging the accupack, you can alternatively use 1.5 V AA size batteries. When powered by batteries, transmitter and receiver can also be used for up to 12 hours. Additional audio sources (e.g. CD player, television, sound card of a computer) can be connected to the 3.5 mm jack socket of the transmitter. Especially for integrative schools, there is the advantage that you can combine the 2015 Mikroport™ System with the Soundﬁ eld EMP 2015 System. In addition, transmitters and receivers of the evolution wireless series can be used together with the 2015 Mikroport™ System. For details, please visit ou web site at www.sennheiser.com.

System 2015

Audiology | Personal FM System

SK 2015

EK 2015

Features

Professional audio transmission quality (80-16.000 Hz)

Transmitter and receiver settings adjustable according to individual

repuirements

Fully compatible with cochlear implants, hearing aids and soundfield

EMP 2015

Easy, intelligent frequency management offers high flexibility

Compact, rugged metal housing

Delivery includes

The 2015 Mikroport™ System consists of the following components:

1 SK 2015 transmitter

1 MKE 2015-2, MKE 2015-0 or ME 2015-H clip-on microphone

1 EK 2015 receiver

2 BA 2015 accupacks

1 L 2015 charger

Instruc tions for use

1 EZB 2015 system case incl. transport case and transport holding device (for EK 2015 and SK 2015) as well as shoulder strap and neck strap

2 EZG 2015 pouches

Note: All components of the 2015 Mikroport™ System are also available separately

Tec hni c al D ata 2015 System

RF characteristics

Modulation ...........................................................................FM mono

Frequency ranges .........................518–554, 626–662, 740–776,

786–822, 830–866 MHz

Transmission/receiving frequencies .................8 channel banks

with up to 20 fac tory-preset channels each

1 channel banks with up to 20 freely selectable channels

(144 0 fr equ enc ies , tunable in steps of 25 kHz)

Switching bandwidth ............................................................ 36 MHz

Nominal/peak deviation .................................. ±24 kHz / ±48 kHz

AF characteristics

Noise reduction system .........................................Sennheiser HDX

AF frequency response .............................................80–16,000 Hz

Signal-to-noise ratio (at 1 mV, peak deviation) .......... 96 dB(A)

THD (at nominal deviation, 1 kHz) ..................................... ≤ 0.3 %

General data

Temperature range ................................................ –10 °C to +55 °C

Dimensions of system case ..........................250 x 210 x 170 mm

Weight of system case (equipped) ..................... approx. 2,600 g

EK 2015 receiver

Sensitivity (wit h HDX, peak deviation) ................. typ. 1.4 µV at

AF frequency response of

52 dB A

S/N

rms

internal microphone ................................................ 200–10,000 Hz

Adjacent channel rejection ............................................. typ. 75 dB

Intermodulation attenuation ......................................... typ. 75 dB

Blocking ............................................................................... typ. 90 dB

Squelch ...................................................... 4 steps: OFF, LO: 5 dBµV

MID: 15 dBµV, HI: 25 dBµV

Power supply ............................................ BA 2015 accupack, 2.4 V

or AA size batteries, 1.5 V

Nominal voltage .................................................................... 2.4 V DC

Power consumption ...................................................... typ. 110 mA

Operating time with BA 2015 accupack ........................ typ. 12 h

with batteries ...................................................................... typ. 12 h

Headphone output ..........3.5 mm jack socket: 2 x 20 mW/32 Ω

Output for hearing aid .............. 2.5 mm jack socket: 3 mV/2 kΩ

Dimensions (without antenna) ......................... 82 x 64 x 24 mm

Weight (with BA 2015 accupack) ............................approx. 175 g

Temperature range .................................................. –10 °C to +55 °

SK 2015 transmitter

RF output power at 50 Ω ..............................................typ. 10 mW

RF radiating power ...........................................................typ. 1 mW

Spurious emission .................................................................. < 4 nW

Max. input voltage(peak deviation/

input impedance) ................................ Microphone: 200 mV/5 kΩ

(soft ware limiter threshold)

Line: 3 V/47 kΩ

Nominal voltage .........................................................................2.4 V

Power consumption at nominal voltage ...................... ≤ 120 mA