Receiver Connection - WisyCom MRK960 User Manual

MRK960 dual true diversity receiver

RECEIVER CONNECTION

Antenna Connection
The MRK960 has two antenna inputs, necessary for a true diversity reception system. Each input signal is
splitted for the two diversity receivers on the MRK960. Each antenna input could deliver a booster supply of
200mA at 12Vdc; this is enough to supply an active antenna like the
Wisycom BAA, needed only when the antenna cable has a very high attenuation.
For connecting more receivers on same antennas use
Analog audio connection
The MRK960, in the full optional audio output configuration, has three audio outputs for each receiver, two
balanced with XLR connector and one unbalanced with a 1/4" (6.3 mm) stereo jack connector. The unbal-
anced audio output has the same audio signal of the LINE output. The balanced audio outputs could be
electronically balanced or transformer isolated with very low impedance when the
Below the XLR connectors there are two switches:
the left one (LINE/MIC) inserts a fixed resistive attenuator of 30dB on the audio output; the audio levels
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on the XLR connector, according to the setting of the "Out level" and to the setting of the switch below
the XLR connectors, at nominal modulation, are:
Out lev 12dBu
12 dBu
Att. 0dB
-18 dBu
Att.30dB
the switch on the right (LIFT/) cuts the connection beetween the pin one of the XLR connector and the
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ground of the MRK960 to avoid ground loops.
Digital audio AES/EBU
The MRK960 has an digital audio output channel according to the AES3 or AES/EBU standards for professional
24 bit digital audio. The left channel of the AES3 stream is the audio of the receiver 1 and the right channel is
the audio of the receiver 2. When no word clock is connected, the sampling rate of the digital audio output
is fixed at 48KHz, internally crystal generated; with the external word clock the sampling rate could be from
32KHz to 108KHz. The word clock input could be left at high impedance or loaded to 75 ohms. The word clock
output could be connected to the next MRK960 or could be left open.
Out lev 6 dBu Out lev 0 dBu
6 dBu 0 dBu
-24 dBu -30 dBu
Wisycom LBNA
• • the antennas cascade configuration as in the picture
(typ. 8 receivers). Connect the output antenna connec-
tor to the input of the next receiver. in reverse order
between antennas side A and antennas side B. Us-
ing this configuration in case of one of the receiver is
faulty, the other receivers can continue to work (with-
out diversity).
• • active wideband antenna splitters like the Wisycom
SPL214AW for four MRK960 (8 wireless microphone
channels) or the SPL218AW for eight MRK960 (16 wire-
less microphone channels). More channels are possible
combining more splitters. In this case the active anten-
nas and the boosters will be powered by the splitters.
and a booster like the
TRAFO option is installed.
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