Wireless Multi Channel Receiver EM 1046 - Communication Systems
$6,749.95
General Description
The EM 1046 receiver module is at the heart of any 5000 series receiver system.
All functions can be quickly checked via an alphanumeric multi-function display panel, LED bargraphs and individual LEDs. Due to the menu-assisted operation, parameters can quickly and easily be modified.
Features
- Modular multi-channel receiver system for demanding musical and broadcast applications
- Large mainframe houses up to 8 true diversity receiver modules
- Small mainframe houses up to 3 true diversity receiver modules
- Several mainframes can be daisy-chained
- Indication of transmitter battery status (only with Sennheiser transmitters transmitting battery status information)
- "HiDyn plus" noise reduction system
- Mikroport computer display for remote controlling large systems
CONSUMER ALERT
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at
www.fcc.gov/cgb/wirelessmicrophones.
Wireless Multi Channel Receiver EM 1046 - Communication Systems
$6,749.95
Technical Data
| Adjacent channel rejection |
≥ 66 dB |
| Compander |
HiDyn plus |
| Frequency response (microphone) |
20.....20,000 Hz |
| Frequency setting |
In 5 kHz Steps, max. 32 freq. |
| Image rejection |
≥ 100 dB |
| Intermodulation |
≥ 76 dB |
| Intermodulation attenuation |
≥ 100 dB |
| Limiter |
≤ 1 µV |
| Min. channel spacing |
300 kHz |
| Nominal deviation |
± 40 kHz |
| Peak deviation |
± 56 kHz |
| RF frequency range (USA) |
470 - 608, 614-698, 944-952 MHz |
| RF frequency range (outside USA) |
450.....960 MHz |
| RF sensitivity |
≤ 1,5 μV / 52 dB(A) S/N |
| Squelch |
0-100 μV |
| Switching bandwidth |
36 MHz |
| Total harmonic distortion (THD) |
≤ 1 % (typ. 0.5 %) |
| Signal-to-noise-ratio |
≥ 117 dB(A) (≥ 105 dB CCIR) |
Wireless Multi Channel Receiver EM 1046 - Communication Systems
$6,749.95
Recommended Accessories
| Part/Accessory |
Article No. |
| A 1031-U |
004645 |
Wideband passive omnidirectional UHF antenna (each sold individually)
|
| A 2003-UHF |
003658 |
Antenna, 430-960MHz, passive, directional, +3dB gain
|
| A 5000-CP |
USA5000CP |
Antenna, 490-960MHz, passive, circular polarization
|
| AB 2 |
009817 |
Antenna RF booster module, 10 dB; specify frequency range A, B or C (each sold individually)
|
| NT 20-1-120 |
003601 |
Power supply for EM 1046
|
| Rack handles |
048064 |
Rack handles for EM 1046 MF (EACH)
|
Wireless Multi Channel Receiver EM 1046 - Communication Systems
$6,749.95
Variants
$6,749.95
Glossary
| Adjacent channel rejection |
| The ability of a receiver to respond to the desired signal and to reject signals from adjacent channels. |
| Compander |
| Also known as noise reduction system. A system which improves the signal-to-noise ratio by compressing the dynamics on the transmitter side using a compressor, and subsequently restores the normal dynamics on the receiver side using an expander. |
| Frequency response (microphone) |
| The frequency response of a microphone is given within the limits defined by the manufacturer. In studio condenser microphones it is generally within the range of between 20 Hz and 20 kHz. |
| Image rejection |
| The ratio of actual receiving frequency to image frequency. Given in dB. |
| Intermodulation |
| In RF transmission, the different carrier frequencies produce not only harmonics (integral multiples) but also a large number of (odd number) sums and differences of integral multiples of the input frequency components. These limit the number of usable frequencies within a certain band. |
| Intermodulation attenuation |
| In RF transmission, the different carrier frequencies produce not only hamonics (integral multiples) but also a large number of (odd number) sums and differences of integral multiples of the input frequency components. These limit the number of usable frequencies within a certain band. The intermodulation spacing gives the level difference between the carrier frequency and these unwanted frequencies. |
| Limiter |
| An electronic circuit used to prevent the amplitude of an electric signal from exceeding a specified value. |
| Min. channel spacing |
| The minimum distance between FM signals which has to be observed in order to avoid interference with adjacent channels. |
| Nominal deviation |
| Also known as reference deviation. The nominal deviation has been fixed at 40kHz to be able to give comparable technical data. |
| Peak deviation |
| Maximum permissible deviation for FM. |
| RF sensitivity |
| The ratio of signal level at a unit´s input to signal level at its output. |
| Squelch |
| Adjustable value for muting a receiver if the RF power received falls below a certain threshold value.
|
| Switching bandwidth |
| The frequency band in which frequencies can be switched directly. |
| Total harmonic distortion (THD) |
| Total harmonic distortion is a measure of non-linear harmonic distortion and is given in %. Non-linear harmonic distortions are signals which were not present in the original before the signal was converted by the headphones. These unwanted signals are caused by the diaphragm, whose movements do not precisely move in time with the electric signals that cause it to move. Unfortunately, this is a feature of all electroacoustic transducers. Although it cannot be completely eliminated, suitable steps can be taken to minimise it. However, the user is not interested in why this distortion takes place but in how great the level of distortion must be for it to become perceptible. According to the findings of several research projects, a total harmonic distortion of 1% in the frequency range of 100 to 2000 Hz is imperceptible. Below 100 Hz, the perceptibility threshold lies at 10%. |
