Sennheiser HDI 1029 User Manual

HDI 1029

IR Audio Transmission Technology | Receivers

General Description

The HDI 1029 is a multi-channel stethoset receiver for narrow-band applications. It is very easy to use and comfortable to wear due to its light weight. It is powered by an environmentally friendly rechargeable accupack. The HDI 1029 is fitted with a squelch and energy-saving circuitry.

Features

Multi-channel narrow-band receiver

Extremely lightweight, only approx. 60 g including accupack

Accupack can be recharged while remaining in the receiver

Energy-saving circuitry

Squelch

Delivery includes: 1 x HDI 1029 multi-channel stethoset receiver 1 x BA 90 accupack

Recommended Accessories
BA 90 accupack	Cat. No. 003261
BA 90 charger for one
L 90 European version	Cat. No. 003262
L 90-120 USA version	Cat. No. 003396
L 90/UK UK version	(available from Sennheiser UK)
L 92-10 charging unit for 10 BA 90	Cat. No. 003355
L 92-20 charging unit for 20 BA 90	Cat. No. 003356
L 1030-10 charging unit for 10 receivers	Cat. No. 004024
L 29-50-2 charging case for 50 receivers	Cat. No. 004310
Plug-in mains unit for one L 92 or up to two L 1030
NT 92 European version	Cat. No. 003357
NT 92-120 USA version	Cat. No. 003358
NT 92-UK UK version	Cat. No. 003359
Plug-in mains unit for L 29-50-2 charging case or up to five L 1030-10
NT 2013 European version	Cat. No. 003433
NT 2013-120 USA version	Cat. No. 003434
NG 2013-UK UK version	Cat. No. 054332

Technical Data
Modulation .................................................		narrow-band FM
Carrier frequencies .........................................		55 – 695 kHz
Channels (HDI 1029 PLL 16).....		ch. 0 – ch. 15, switchable
AF frequency response.................................		50 – 8,000 Hz
THD (electrical)..........................................................		typ. 2 %
AF signal-to-noise ratio ...........................................		> 52 dB
Max. SPL .........................................................		approx. 110 dB
Power supply..................	BA 90 accupack, 2.5 V, 170 mAh
Operating time ..............................................		approx. 10 hrs
Weight .............................	approx. 60 g including accupack

195 mm 135 mm

Dimensions of the HDI 1029

Product Variants
HDI 1029	PLL 16: Multi-channel stethoset receiver,
16 switchable channels (ch. 0 – ch. 15)		Cat. No. 003659
HDI 1029	PLL 16 H: Multi-channel stethoset receiver,
16 switchable channels (ch. 16 – ch. 31)		Cat. No. 004631
HDI 1029	PLL 8: Multi-channel stethoset receiver,
8 switchable channels (ch. 0 – ch. 7)		Cat. No. 003676

HDI 1029

IR Audio Transmission Technology | Receivers

1 Removable silicone earpads

2 Two IR receiving diodes

3 On/off/volume control

4 Inserted BA 90 accupack

5 Channel selector switch

6 Recharging contacts

Controls of the HDI 1029

L 92-20

L 90

L 92-10

L 29-50-2

The HDI 1029 is a multi-channel narrow-band stethoset receiver. Depending on the model, it can be switched between 8 or 16 channels. Due to this multi-channel design, it is ideally suitable for use at international conferences. The stethoset receiver is an economical alternative to the bodypack receiver with its “external” headphone. Short events with a changing audience bring out the special advantages of this type of receiver: they can be quickly distributed and collected again as there is no cable to get entangled.

The transducers of the HDI 1029 are situated directly behind the ear pads. The resulting sound quality is clearly better than that of systems using pneumatic transmission. Moreover, the stethoset design clearly attenuates ambient noise, values of up to 15 dB having been achieved. This attenuation for example increases the intelligibility of translations when the floor language is being reinforced at the same time. The operating controls of the HDI 1029 – a combined on/off/volume control and a channel selector switch – are located at the bottom of the receiver where they are protected against coffee splashes etc. After use, the receiver should always be switched off. The IR receiving diodes are located on the front of the receiver. Thus, the users always have good reception as long as the diodes do not face the body.

The HDI 1029 has a built-in squelch. When the IR signal from the radiators becomes too weak, the receiver mutes the audio output in order to avoid loud hiss. During conference breaks, this muting circuit serves to save energy. The receiver switches to stand-by so that the BA 90 accupack is not discharged too quickly. The environmentally friendly BA 90 has a weight of only 8 g and allows an operating time of approx. 10 hrs with the HDI 1029. The various possibilities for recharging the BA 90 are decribed below.

The silicone earpads of the HDI 1029 can easily be removed and cleaned. Nevertheless, they are tightly attached to the headphones to prevent them slipping off accidentally.

The smallest available charger for the BA 90 is the L 90 which has been designed for one accupack. If you want to recharge several BA 90 at the same time, you should use the L 92 charging unit for up to ten or up to twenty accupacks. The BA 90 are inserted into the units from both sides, and recharging is indicated by the LEDs on top of the charging unit.

However, the best solution is to recharge the accupacks while they remain inserted in the receivers. The L 1030-10 charging unit can recharge up to ten complete receivers. It is powered by the plug-in mains unit NT 92, which is suitable for up to two L 1030-10. For up to five cascaded units, you can use the NT 2013 or NG 2013-UK. The necessary plug-in mains units are not delivered with the charging units. Please order them separately in the version you require (European, UK and USA versions available).

The L 29-50-2 charging and transport case makes storing and recharging still easier. The charging case can accommodate up to 50 HDI 1029, the accupacks remain in the receivers and recharging is timer-controlled. Power is supplied via an NT 2013 (or NG 2013-UK) plug-in mains unit which must be ordered separately. The BA 90 accupacks cannot be overcharged, so they can remain in the charging units even when they have been fully recharged, which takes approximately 14 hrs. The charging unit in the L 29-50-2 automatically switches over to trickle charging after 14 hours.

L 1030-10

Options for recharging the BA 90