User manual SENNHEISER MZC 30

[. . . ] 4 Suitable transmitters for your Tourguide application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Charger for your Tourguide application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Product overview of the MZC 30 receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Putting the receiver into operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 10 seconds). Setting the receiving channel If several guided tours take place within a building at the same time, i. e. several transmission links are operated simultaneously, the user can switch the channel of the receiver to the channel that is stated by the tour guide. To switch between the receiving channels: Press the rocker button. The receiver immediately switches to the new receiving channel. If the receiver receives a transmitter on the new channel, the green LED 5 lights up. The "Active" function allows you to show or hide the receiving channels from the standard display (see page 20). 12 | Tourguide 1039 Using the receiver Attaching the receiver to clothing You can use the belt clip E to attach the diversity receiver to clothing (e. g. belt, waistband). The belt clip is detachable so that you can also attach the receiver with the antenna pointing downwards. To do so, withdraw the belt clip from its fixing points and attach it the other way round. The belt clip is secured so that it cannot slide out of its fixing points accidentally. To detach the belt clip: Lift one side of the belt clip as shown in the diagram. Press down the belt clip at one fixing point and pull it out of the receiver housing. Repeat for the other side. Tourguide 1039 | 13 Configuring the receiver Configuring the receiver Calling up/ending the menu You can only call up the menu when the receiver is switched off. Before adjusting the squelch threshold, set the volume of the headphone output to the minimum (see page 11). Never change the squelch threshold during a guided tour. Only switch off the squelch for servicing or test purposes. Adjust the squelch threshold ­ with the transmitter switched off ­ to the lowest possible setting that suppresses hissing noise. A high squelch threshold reduces the transmission range. The squelch should only be switched off for servicing or test purposes. With the squelch threshold set to "Low", you switch the squelch off by keeping the DOWN rocker button pressed for 3 seconds. Tourguide 1039 | 17 Configuring the receiver Activating the limiter of the headphone output ­ "Limiter" SET Setup Limiter Limiter Off Select the desired setting Limiter On Store the setting SET Off Call up "Limiter" "Stored" Possible settings: "On", "Off" The limiter reduces the maximum volume at the headphone output by ­12 dB. Upon delivery, the "Limiter" function is switched on. We recommend to keep this function switched on at all times. Adjusting the contrast of the display panel ­ "LCD Contrast" Setup NameContrast LCD 7 Call up "LCD Contrast" LCD Contrast 7 Select the desired setting "Stored" LCD Contrast 10 Store the setting You can adjust the contrast of the display panel in 16 steps. Displaying the software version ­ "Software Revision" You can display the current software version of the receiver. For information on software updates, visit the MZC 30 product page at www. sennheiser. com. [. . . ] · For optimum RF operation, use suitable antennas from the Sennheiser accessory range. For more information on suitable accessories, visit the corresponding product pages at www. sennheiser. com. 24 | Tourguide 1039 Specifications Specifications The specifications of the transmitter can be found in the instruction manual for the transmitter. MZC 30 receiver RF characteristics Modulation Frequency ranges Receiving frequencies Switching bandwidth Nominal/peak deviation Receiver principle Sensitivity (with HDX, peak deviation) Adjacent channel rejection Intermodulation attenuation Blocking Squelch wideband FM 626-698, 718-790, 790-865 MHz (Bw, Cw, Dw see page 4) max. 32, tuneable in steps of 25 kHz 75 MHz ±24 kHz / ±48 kHz adaptive diversity < 4 V, typ. 78 dB 80 dB Low: 5 dBV, Middle: 15 dBV, High: 25 dBV AF characteristics for headphone output Compander system AF frequency response S/N ratio (1 mVRF, peak deviation) THD Headphone output Output power at 2. 4 V, 5% THD and nominal deviation Adjustment range Sennheiser HDX 40­15, 000 Hz approx. [. . . ]