Battery operation | Sennheiser SKM 3072-U-x, SKM 3072-U instruction

Battery operation

Accupack operation

10Display of battery / rechargeable accupack status

The display indicates the (remaining) capacity of the battery / rechargeable accupack in use. The display differs for battery or accupack operation.

Battery operation:

If all eight LCD segments are showing, the full battery capacity is available.

If four LCD segments are showing, about half of the battery capacity is still available.

If the battery is going flat, only the last LCD segment is showing and the “LoBAt” warning flashes in alternation with the display of the transmission frequency / channel number. You should replace the battery within the next ten minutes.

Accupack operation

(display only if the Sennheiser BA 1032 accupack is used):

If only the LCD segment on the right is showing, the accupack can be used.

If the accupack is going flat, only the last LCD segment on the left is showing and the “LoBAt” warning flashes in alternation with the display of the transmission frequency / channel number. You should replace the accupack within the next ten minutes.

Intermediate capacities are not displayed. When a new accupack is inserted the right-hand LCD segment will indicate full capacity. As the accupack discharges this segment will remain on showing that the accupack is usable, when the accupack approaches full discharge the display will switch to showing the left-hand LCD segment as a warning (as described above).

Accupacks from other manufacturers cannot be “identified” by the electronics and their capacity is therefore not displayed correctly.

12Unlocking and removing the protection/ identification cap

Press the corrugated area below the microphone body to unlock the protection/identification cap and push the cap backwards until you meet resistance. The operating controls are now accessible.

The protection cap can be exchanged. To do so, push the cap further backwards over the resistance. If several SKM 3072-U hand-held transmitters are used simultaneously, the protection cap – which is supplied in various colours – also serves as an identification mark.

13Display of transmission frequency or channel number

After you have switched on your SKM 3072-U, the microprocessor performs a self test which can be followed on the display. After about two seconds, the PLL has locked on the preselected transmission frequency and the standard display – the preselected transmission frequency or the channel number – is shown.

With the / buttons you can now choose the content of the display i.e. whether the transmission frequency or the channel number is displayed. Your selection is stored and remains stored even if the transmitter is switched off and on again.

button: The display of the transmission frequency is quite important for the technician as he can check in which channel grid the transmission is taking place, if the channels are interfering with each other and so on.

button: The channel number – which is the same for both transmitter and receiver – is easier to monitor for the user on stage.

11Sennheiser transmitters report their battery status to the receiver

Together with the RF signal, the SKM 3072-U transmits inaudible information on its remaining battery or accupack capacity to the receiver. This information can be evaluated with the Sennheiser EM 3031/EM 3032/EM 3532 or EM 1046 receivers.