DEVICE DESCRIPTIONS

Optional Key-lock Switch (NRS 90231)

The paging consoles employ two empty slots for the incorporation of optional alarm keys or key-locked switches (also refer to chapter 5.2.3 Control Panel DPC 4550). For retrofitting an additional key-lock switch you should only use the NRS 90231 extension kit.

Brief description:

optional key-lock switch for retrofitting DPC 4xxx-type paging stations to work as

 

idling current-controlled opener.

Supplied with the NRS 90231: 1 key-lock switch, complete with front frame and 2 keys

1connection cord, 4-pole

1resistor 10 k ohms

Installation instruction:

1.Disconnect the paging console from the power supply.

2.Detach the bottom plate (6 to 8 screws, depending on the paging station model).

3.Prepare the installation site for the insertion:

￿Use a sharp, pinpoint tool (needle, pointed rat-tailed file, knife etc.) to carefully pierce the pre- punched holes through – from the front panel’s outside to the inside.

Note: Please make sure to solder the cables after the switch has been installed. Otherwise it is virtually impossible to slide the milled nut over the body of the switch!

4.Adjust the switch and tighten it using the supplied milled nut.

5.Please refer to the circuit diagram on this page when

connecting the supplied 4-pole wire and the resistor.

6. Please mind the sequence in which you connect the flat wire cables. The two outside wires 1(rt) and 4(gr) have to be cut off as short as possible and need to be insulated. The two inner wires 2(gr) and 3(gr) need to be soldered to contacts 1 and 2 of the switch. Polarity is not a critical factor.

7. Afterwards, you have to connect the 4-pole female plug to the corresponding OPTION 1 or OPTION 2 - terminal strip on the basic printed board assembly.

8.Re-attach the bottom plate.

9.Software configuration with the PROANNOUNCE Designer

figure 5.40

circuit diagram key-lock switch

PROANNOUNCE System User Handbook 1.1

5-45

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Image 59
Dynacord DPM 4000 manual Optional Key-lock Switch NRS

DPM 4000 specifications

The Dynacord DPM 4000 is a high-performance digital power mixer designed to cater to the needs of live sound engineers, musicians, and audio professionals. It offers an extensive range of features and cutting-edge technologies, making it the go-to choice for both small venues and large-scale productions.

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The DPM 4000 is equipped with a robust 16-channel configuration, providing ample input options for microphones, instruments, and other audio sources. Each channel is fully equipped with EQ controls, gain adjustments, and auxiliary sends, allowing for precise shaping of the sound. The mixer also supports multi-track recording via USB, making it easy for users to capture performances directly to a computer.

In terms of connectivity, the Dynacord DPM 4000 excels with multiple options including XLR, TRS, and RCA inputs. Its flexible routing capabilities enable sound engineers to customize their signal flow, enhancing both versatility and convenience during live performances. Additionally, the mixer supports remote control through dedicated software applications, enabling users to manage settings from a distance, a significant advantage for live sound applications.

The DPM 4000 features advanced thermal management technology, ensuring the unit remains cool during long operational periods. This is critical for maintaining optimal performance and longevity. The built-in power amplifier delivers impressive wattage, suitable for driving various loudspeaker systems while maintaining sound clarity and fidelity.

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In summary, the Dynacord DPM 4000 is a versatile and powerful digital power mixer, offering a blend of user-friendly features, comprehensive control, and robust performance. Whether used in a live sound setting or for recorded sessions, it stands out as an exceptional tool for audio professionals committed to delivering high-quality sound.