User manual ELK PRODUCTS ELK-124 V.2

[. . . ] · Built-in condenser microphone for recording. · Adjustable speaker volume and current draw. · Powerful 24 watt audio amplifier for Speakers. · Line Level Output for Amplifiers and Paging Systems. [. . . ] >60, enables recording of messages greater than 60 seconds with message recording overflowing into the next channel. Activating The Voice Channels (Playback) Continuous (maintained) trigger: Apply a positive (+) 11 to 14 Vdc to terminal C1 for Channel 1, terminal C2 for Channel 2, etc. The message will playback for as long as the power is applied, provided Jumper JP2 ("1SHOT - REPEAT") is in the REPEAT position. Momentary trigger: Connecting terminals +12V and Neg to a constant (+) 11 to 14 Vdc power source allows channels to playback with a momentary trigger input voltage. Most current is drawn from the constant power source. Current draw from the input triggers will be approximately 30 mA. In the momentary trigger mode each message is played through to the end (one cycle). Voice Record Time If jumper JP4 is in the <60 position, the maximum record time is 60 seconds per channel. In the >60 position, messages longer than 60 seconds may be recorded by overflowing the message into the next available channel. When this occurs, the next "overflow" channel cannot be used as a recordable channel. Any attempt to record a message into that next channel will automatically overwrite and destroy the overflow part of the previous channel's message. Note: If the maximum record time is reached or exceeded, the red REC/EOM LED will start blinking to indicate that recording time has halted. Volume and Current Adjust Turning the Volume knob clockwise will increase the output volume. The louder the volume, the higher the current draw. The volume and current draw may be adjusted to match the current capability of the power source. Options for Playback of the Voice Channels The switches marked "Manual Triggers" are provided for programming and for user convenience where manual activation of the channel(s) may be desired. A constant power source must be connected to +12V and NEG terminals in order to use these switches. Recording Voice Messages Messages may be recorded from the on-board microphone, or from a PC with a sound card and an ELK-129 interface. To record from the onboard microphone place Jumper JP1 in the MIC position, JP2 in the REPEAT position, and JP3 in the RECORD position. If the message will be longer than 60 seconds, place JP4 in the >60 position. Activate the desired channel either by using the on-board DIP switches(requires power to be connected to +12V and NEG terminals) or by applying +12 Volts DC to the desired input (C1, thru C8). The current message (if any) will start to play. While it is playing, press and hold the record switch SW1 and speak clearly into the on-board microphone. [. . . ] (Max 4 Ohm load) [Volume Control (R10)] Adjusts volume of the speaker output. [Manual Triggers] Selects channel to be recorded. Power must be applied to the +12V and NEG terminals to use this switch. [Record Switch (SW1)] To record a message, set JP1 to MIC, activate desired channel, press SW1, then speak your message into the on-board microphone. [. . . ]