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Summary of Contents for WisyCom MRK960
- Page 1 User Manual MRK960 User Manual Wideband True Diversity Dual Receiver Rev.06 (ref. FW 1.1.0.H) Date: 20 January 2020...
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Page 2: Brief Description
(i.e. AES/EBU, Ethersound, …), with multi-companding compat- ibilities and other digital features. • • “best in class performances”, thanks to the latest Wisycom technology the unit has extreme RF sensitivity and immunity and superb audio quality. -
Page 3: Main Features
• • Use only accessories or replacement parts authorized or specified from the manufacturer. • • Do not supply more than 7 apparatus MRK960 from the mains output, see power requirements for other apparatus. • • Clean the apparatus only with dry cloths, do not use liquids. -
Page 4: Technical Description
High reliability and durability • One of the milestones in the design of the MRK960 is high reliability: most of the circuitry of the receiver is independent one from each other. Here below a schematic with an overview of main receiver functions. - Page 5 Ethernet and user interface MRK960: main block diagram The data sub carrier is digitally filtered to a very selective equivalent filter (bandwidth 3Hz). Each filter has its own data demodulator, one for medium speed data detection at the output of the first filter and one at low speed data detection at the output of the second filter.
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Page 6: Front Panel Functions
User guide Front panel functions MRK960 allows an easy and quick configuration using buttons, push knobs and displays. The front panel is functionally divided in the following section: Scan & Squelch: automatic scan and squelch settings;... -
Page 7: Power & Booster
MRK960 dual true diversity receiver RECEIVER 1 and RECEIVER 2 Area A: 3 LED bars: • two bars for the RF levels in dBuVolt (diversity A & B antenna level), • FM modulation of the received channel (modulation in % referred to the nominal deviation) • LIN: audio in line output active • COM: audio in com output active (optional) • GPI: g.p.i. command thru opto-isolated relay, active (optional) • DATA: data subcarrier from microphone transmitter detected Area B: display (256 x 64 pixels yellow OLED display) Area C: 3 push buttons (membrane). The function of each button (upper, middle and lower) will be readable from the context menu on the display. Area D: Push rotary knob and light indicator Warning (YELLOW) and Alarm (RED) light indicator: • Yellow Fixed light indicator (Warning) when there is no audio in both the audio outputs (COM and LINE) •... - Page 8 MRK960 dual true diversity receiver LCD display: Main view All the basic information on the receiver status are readable in the main view of the LCD display. The main view has the following info: receiver name, current tuning frequency current channel number current group number and group name TV channel used for the current frequency Tone Squelch current setup AES work clock status (since fw 1.1.0.H or above)
- Page 9 MRK960 dual true diversity receiver Radio menu The first item on the menu tree is “RADIO”. Pressing the upper button (RADIO), you go at the RF functions menu of the receiver, as shown below: Pag. 9...
- Page 10 2] Group number (1 to 40) and group name (8 char.) 3] Group description (30 char.) The MRK960 has 40 groups of 60 channels each. Normally this is too much for wireless microphones applica- tions. Connecting with computer with WISYCOM MANAGER software, it is possible to hide single channels or even complete groups of channels: once hidden those items are not shown anymore on the channels or groups selection.
- Page 11 MRK960 dual true diversity receiver Walk test The WALK TEST function records the RF level of the two antenna inputs, separately, for a total time of 90 sec- onds. Using the first button, it is possible to choose what to plot: the rf level of the antenna A or B, the Max value between antenna A and B or both antenna levels separately.
- Page 12 MRK960 dual true diversity receiver Info the INFO function shows many important features or information of your MRK960 receiver: R ange: info about the frequency limits of the receiver. » Temp: internal temperature of MRK960. » Ant. A and Ant. B: the measure of the output current for powering the boosters connected on antenna » input A e B connectors. The current measurement is active only when boosters are switched on. The booster supply voltage is 12 Volts. Serial: serial number of the MRK960 receiver. » Errors: number of internal errors detected by the receiver, useful for service or maintenance. » App: release version of the main application firmware. » App bl: release version of the main application firmware updater (bootloader). » Netw: release version of the network communication firmware. » Netw bl: release version of the network communication firmware updater (bootloader). »...
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Page 13: Audio Menu
The NOISE REDUCTION SYSTEM is used to select your current noise reduction system in the audio path. Thanks to the DSP board, it is possible to choose different types of audio processors. MRK960 supports, as standard configuration, the following type of “Companding system”: NONE-d50 NO compander, 50µs de-emphasis... - Page 14 MRK960 dual true diversity receiver The tone squelch selection could be OFF, ON or ADV (advanced). After the SAVE of tone squelch selected, a CONFIG submenu appears on the right. Enter on the CONFIG submenu to change the setting of the choosen Tone Squelch (see matrix below).
- Page 15 MRK960 dual true diversity receiver Cal. tone The CALIBRATION TONE function generates a tone (at specific frequecies) or a sweep of tones at the audio outputs. Change the value of the following parameters according to the desiderable calibration tone: M ode: select the type of calibration tone (Tone/Sweep) »...
- Page 16 MRK960 dual true diversity receiver Audio output RX1 is calculated from the best RF signal received from the two receivers. Audio output RX2 is calculated from the RF signal received from RX2. TSQ detect alarm This option is normally disabled.
- Page 17 MRK960 dual true diversity receiver SQ (squelch autoset) The SQUELCH AUTOSET function helps the user to set the squelch level of the receiver at a good level for the selected channel. After pressing the SQ autoset button, the two receivers ask to switch off the transmitter and then, after the user confirmation (on one receiver or all the two receivers at the same time), it starts to measure the noise in the selected channel.
- Page 18 MRK960 dual true diversity receiver In the above picture a typical graph of the scan function (only the graph area of the display). This graph, or- dered by channel numbers, shows the RF levels in dBµV for each channel in the selected group (i.e. Ch: 00).
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Page 19: Operating Informations
6 or 4 or 3 level (full, half, empty). When the transmitter is a Wisycom, the display of the batteries indicate the correct icon and the percentage of the charge but, when the charge reach the 25% the battery area on the display became flashing, when the charge reach the 12,5%, the illumination of the display is flashing to give an high visibility alarm to the user. - Page 20 MRK960 dual true diversity receiver Rear panel 1Mains output. Do not connect more than 8 Switches for shorting the pin 1 of the XLR con- units. nectors of receiver 1 to the receiver ground or not. Mains socket input. Switches for attenuating the audio output le- Mains fuse (2A-T). vel on the XLR connectors. The attenuation is 30dB. Ethernet connector RJ45 for LAN connection of the receiver. The leds on the connectore indi- Unbalanced LINE audio output of receiver 2, cate the status of the connection (Link and Ac- 1/4” (6,3mm) stereo jack socket.
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Page 21: Receiver 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... - Page 22 PC, the ethernet port is disable). Near the USB connector there is another connector named LINK. This connector could be connected to the USB port of the next MRK960 with an USB-A to USB-B cable to build a chain of receivers. The maximum number of receivers in a chain is four. The receiver with the USB connector free is the subnet controller receiver (the one in the upper position on the picture).
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Page 23: Network Connection
Several USB cascade can be connected using the ethernet connection on each MRK950 acting as cascade controller. Hereafter an example of a 12 rack configuration, there is no limits to the complexity manageable on Wisycom Manager software. ETHERNET ETHERNET... -
Page 24: Technical Specification
• • Tone-squelch: it works by decoding the special key, sub-carrier (digitally modulated) present on the carrier of the actual Wisycom transmitters. The tone squelch function can be inhibited for compatibility with other types of transmitters Pag. - Page 25 MRK960 dual true diversity receiver Options specifications: • • Low impedance transformer on audio lines (option XRL950, XRC950): Analog audio outputs are galvani- cally isolated by means of a high quality low impedance shielded transformers. o utput level: 12dBu nom., 18dBu at max FM deviation » o utput impedance: < 30Ω (e.g. could drive at least 300m of high quality twisted pair audio cable without »...
- Page 26 MRK960 dual true diversity receiver ENVIRONMENTAL INFORMATION Applicable in the European Union and other European countries with separate collection systems Disposal of Old Electrical & Electronic Equipment (2002/96/EC) This symbol indicates that this products shall not be treated as household waste. Instead it shall be handed over to the appropriate collection point for the recycling of electrical and electronic equipment.
- Page 27 MRK960 dual true diversity receiver Pag. 27...
- Page 28 V ia T i e polo, 7/E • 3 5 01 9 Tom bo lo ( P D) • Italy Te l . +39- 0424-38 260 5 • Fax +3 9- 04 24 -3 82 73 3 e-m ail : sal es @ wis yco m. co m w ww.
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