User manual ELECTRO-VOICE 652 DATASHEET

[. . . ] All models come with LC-display (2 lines with 16 characters each). The individual models are listed in the following table: DPC 4106 DPC 4510 DPC 4520 DPC 4530 DPC 4550 DPC 4350 6 function keys 8 function keys + 10 selection keys + alarm key 8 function keys + 20 selection keys + alarm key 8 function keys + 30 selection keys + alarm key 8 function keys + 50 selection keys + alarm key paging station extension with 50 selection keys The paging stations employ the following common features: · · · · · · · · · · · · · · · all functions are processor-controlled non-volatile configuration data FLASH-memory condenser microphone incl. pre-amplifier and compressor / limiter freely programmable key-assignment easy labeling the keys via label-strips and MS WORD templates monitoring of the analog circuitry via integrated pilot-tone oscillator monitoring of the processor system via watchdog-circuit line-monitoring via pilot-tone and polling covered alarm key (except at the DPC 4106) prepared for retrofitting additional alarm keys or key-lock switches prepared for the connection of an external PTT-type microphone or audio signal source piezo-humming device for acoustic alerts prepared for the installation of an optionally available loudspeaker set-up mode allows altering parameter settings directly at the paging station two-line LC-display All paging stations are processor-controlled and provide several monitoring functions. The integrated watchdogcircuitry monitors the processor system while the audio section is guarded by the signal of a switchable pilot tone oscillator. [. . . ] Keeping this key pressed and simultaneously pressing the STOP-key selects the set-up mode and the PROGRAM-LED starts blinking. Now you can alter preferences or make other changes as described in chapter 6. 2. 7 Paging Station Configuration in set-up mode. When in set-up mode, this key is used to select the following parameter (parameter selection). 10 ALARM-key with indicator Pressing the ALARM-key starts an alarm signal that is transmitted into all areas. The alarm indicator lights as soon as the alarm is being launched. Pressing the STOP-key or subsequently pressing the ALARM-key terminates the alarm signal. What kind of alarm signal is being transmitted is pre-defined during the configuration procedure of the PROMATRIX system. 11 Optional key-slots These slots allow retrofitting an additional covered key and a key-lock switch. The front panel is already prepared for the installation of two 18 mm pushbuttons / switches. You only have to cut suitable holes into the front panel cover-foil. Internal fittings are also already prepared. By pressing the key of an already pre-selected line once again deactivates that line and the corresponding LED goes out. After you have made your selection, pressing the TALK-button ignites the actual call. Prior to that you can check via the BUSY-LED whether all lines and the paging station input are actually free. If single lines or the terminal input are busy with lower priority transmissions, the BUSY-LED will blink slowly. Whilst announcements are possible, they will interrupt any other event that is momentarily transmitted. If single lines or the terminal input are busy with higher priority signals, the BUSY-LED will vastly blink and the calling attempt is being ignored (also refer to the description of indicators). The BUSY-LED lights during announcements. The TALK-button needs to be pressed during the whole message. First, the desired areas / groups have to be selected either using selection keys or with the ALL-key. Pressing the TEXT-key starts the reproduction of a prerecorded message that had been assigned during the configuration. While the text message is being transmitted, the TEXT-LED lights steadily or blinks (also refer to indications). [. . . ] The level of the audio signal is determined during the PC-configuration procedure. The assignment stays memorized until the selection keys are pressed again. Pressing the CANCEL-key erases the entire assignment-pattern. Subsequently pressing the PROGRAM-key or any other function key cancels the program-assign mode. [. . . ]