User manual ELECTRO-VOICE 649A DATASHEET

[. . . ] Using the supplied cable, the telephone interface has to be connected to a paging console input on the DPM 4000. The interface transmits serial control data as well as LF-audio signals. The 649A appears at the DPM 4000 as a special paging console allowing it to be programmed via the PC Designer Software in paging console dialog mode. The 649A offers 100 call numbers (from 00 to 99). [. . . ] Connect the PHONE LINE socket with the telephone wall outlet. The LOOP THRU socket provides a connection facility for an optional telephone set. NOTE: The LOOP THRU signal is disconnected whenever the 649A picks up a phone call via the PHONE LINE socket. 4. 3 Power Supply Insert the supplied power supply unit's round plug into the POWER SUPPLY socket on the rear panel of the 649A. Turn the plug's safety lock clockwise to establish a securely locked connection. Afterwards, connect the supplied mains cord to the power supply unit before inserting the mains plug into the mains wall outlet. The 649A is immediately operational upon establishing accurate connection. Adjusting the Audio Level Adjusting the level of the audio signal that is transmitted to the DPM 4000 System Manager is possible via the LEVEL TO PAGING MANAGER trimmer. Doing so, use a small, flat screwdriver to first set the trimmer to its centre position. Call the 649A and speak with a normal voice into the receiver while adjusting the audio signal level for best transmission quality. The level meter should not indicate any signals in the red area. It is your decision whether you want to wait (enter #), or to interrupt the current announcement (enter * once again). A "High Busy" signal (rapid, high-pitch sequence of tone signals) indicates that one or several high priority zones are busy. Once the announcement is finished, you can enter an announcement end mark through using the hash mark key (#). The connection is not dropped, which enables you to select new zones or groups for making further announcements. Pressing the asterisk key after an announcement is finished drops the connection ­ the 649A "hangs up". Direct Call The 649A allows making announcements in permanently pre-selected zones or groups (Direct Call). This function can only be accessed from access level 2. No other number selection is accepted if the selected one or two-digit number represents a talk function. Press the asterisk key (*) to launch an announcement. The 649A acknowledges this request with a single tone signal, indicating that it is operational and ready to accept your announcement. The 649A outputs a "High Busy" signal when one or several high priority zones are busy. [. . . ] / Tone Dial Code 1 (or 01) 2 (or 02 3 (or 03) . . . 59 Function SELECTION SELECTION SELECTION . . . TEXT Parameters Zone 1 Zone 2 Zone 5 . . . 7 Remarks Selects Zone 1 Selects Zone 2 Selects Zone 5 . . . [. . . ]