AUDIO WIRELESS – WIDE-BAND DADM226-DT-MK2-P

Digitally Tuned (DT) Diversity Antenna Distribution Module DADM226-DT-MK2-P is a custom design, which offers the solution specifically in crowded RF spectrum to antenna distribution requirements for portable sound bag, cart, and trolley applications with improved RF performance. Narrow-Band RF Filtering provides utmost protection against interfering, unwanted-dirty RF signals and maintains robust RF integrity.

Designed for where the weight and size matters without sacrificing on performance.

The DADM226-DT-MK2-P covers frequency range 470-702MHz offering user selectable Narrow-RF-Bandwidth with ultra-high selective filters as well as Semi-Broad Band filters options.

There are 2-Modes of operations to suit individual applications and frequency allocations.

• DT-Mode: Digitally tuned very selective RF Band-Pass filter in the frequency range 470-702MHz, tunable in 8MHz step, 24MHz window, with adjustable gain between +10dB to -10dB user adjustable in 1dB steps.
• WB-Mode: There are 3 settings for the High-Pass (HPF) and 3 settings Low-Pass (LPF) filters giving combination of 9-semi-broadband filter bandwidths with adjustable gain between +6dB to -10dB user adjustable in 1dB steps.

The DADM226-DT-MK2-P has an extremely high input signal handling capacity with very low noise figure and offers an outstanding inter-modulation performance when compared to other low power devices available.

The DADM226-DT-MK2-P is an active antenna distribution system that eliminates multiple receiver antennas and provides a tidy solution for sound bags, carts, and trolleys enabling use of high-gain passive or active antennas with improved RF performance.

There are two industry standard BNC input connectors for antenna inputs which enable use of standard low loss RF coaxial antenna extension cables, and there are 2 x 6 mini-RF SMA connectors feeding the diversity receivers.

In applications requiring remote antenna powering, the DADM offers switchable active antenna powering, settings trough the OLED display menu, the RED LEDs indicating power ON/OFF status.

DC powering is through standard 4-pin Hirose type connector (HR1) between voltages 10-18Vdc. The dc power distribution is through HR2-HR5, the dc HR2 connector is user configurable as dc-in or dc-out, HR3-HR5 is dc-out only, all functions are through the OLED Menu. A green LED indicates the power-on status of the system box and the OLED display continuously monitors dc input voltage.

Audio Wireless Diversity Combiner/Distribution systems are now the first choice among freelance sound engineers, hiring companies as well as major broadcasters for all wireless microphone applications.

 

RF Distribution Section
Frequency Range	470 to 702MHz
Input Impedance	50 Ω
Output Impedance	50 Ω
Current Consumption WB- Wide Band Mode DT- Digitally Tuned Mode	150mA@12V, in WB-Mode 250mA@12V, in DT-Mode

DT-MODE: Digitally Tuned Filter Range	470-702MHz
Bandwidth	24MHz, user tunable in 8MHz steps
Selectivity	-40dB to -30dB@50MHz min.
Adjustable Gain Range	+10dB to -10dB, adjustable in 1dB steps
OPI3	> +41dBm
Port-port isolation	> 20dB (min)
Noise Figure	< 3 dB

WB-MODE: Wide-Band Mode (Semi-Broadband compared to DT-Mode) Band-Pass Filter tuning Range	470 – 698MHz (User configurable into 9-Band Pass Filters)
High Pass Filter settings	470/510/550MHz
Low Pass Filter settings	608/663/698MHz
Selectivity	-30dB to -20dB@50MHz min
Adjustable Gain range	+6dB to -10dB, adjustable in 1dB steps
OIP3	> +41dBm
Port to port isolation	> 20dB (min.)
Noise Figure	< 3 dB

Connections
RF Inputs	2 x 50 Ω Standard BNC Sockets
RF outputs to receivers	2 x 6 x 50 Ω mini UHF SMA sockets
Master ON/OFF Switch	Master switch with green led -ON- indicator
Navigation Dial Switch	3-way Dial Switch, Middle press(SET), left and right dial as UP/DOWN the Menu
DC Power IN(HR1)	4-Pin Hirose, Pins1+2(-ve), Pins3+4(+ve)
DC Power IN/OUT(HR2)	4-Pin Hirose, Pins1+2(-ve), Pins3+4(+ve) user configurable as DC-IN or DC-OUT
DC Power Distribution	3 x 4-pin Hirose sockets individually fused DC-OUT and protected against reverse polarity

Powering
Operating voltage range	10-18V, input reverse power, and short circuit protected
Active Antenna Powering	Active Antenna Powering, 12V regulated@ 500mA(max.) user selectable
Hirose dc output(HR2)	HR2 can be configured (through Menu) as DC Output or DC input port, DC out is unregulated incoming volts, fused, and protected against reverse polarity
Hirose DC Output	HR2 to HR5 dc-output ports, unregulated incoming volts, switched, fused, and protected against reverse polarity

 

Outer Case
Dimensions	185x35x56mm (W x H x D)
Weight	395g
Supplied RF link cables	12xSMA-RA to SMA-RA, 40cm 2xBNC-RA to BNC-S Antenna extension cables, 50cm