Speaker's Timer / Conference Timer

Speaker's Timer / Conference Timer

Conference Timer Pic.
Lectern and Master Units
A versatile count down timer to indicate the time remaining for a speech.

The timer comprises 3 units.
A Chairperson's control unit, a display unit at the lectern, and an optional slave display unit for the A/V operator.

Lectern Unit

10 LED bar graph displays time remaining in 10% steps.
Warning LED to indicate when a predetermined time remains.
"Time's Up" LED to indicate when time is up.
Pause LED to show when the master is paused.
Dimensions: 110mm x 60mm x 25mm
Reports any cable faults back to the master.
Powered via cable to Master Unit. No local power needed.

An optional unit for the A/V operator is similar in appearance to the Lectern unit. It provides a slave display without reporting any cable faults back to the Master.

Master Unit

10 LED bar graph displays time remaining in 10% steps.
Warning LED to indicate when a predetermined time remains.
"Time's Up" LED to indicate when their time is up.
Pause LED to show when the master is paused
Start/Stop and Pause buttons.
A 15 position rotary switch and associated minutes button select the time from 1 to 60 minutes in 1 minute steps.
Selectable Warning time indication of either 2 or 5 minutes.
Audible beeper on/off for each of the Lectern and Master units.
Fault LED indicates that the Lectern unit is not plugged in or there is a cable fault.
Dimensions: 95mm x 120mm x 34mm

Power Supply

An external plug pack (supplied) connects via a 2 pin locking metal connector.
Plug pack requirements are either 16-18V AC 1 amp or 24V DC at 500mA.
The plug pack can be wired with either polarity as there is an internal rectifier.
Available in 120V and 240V versions.

Typical Operation

Example:
Set up the Speaker's Timer for a 20 minute speech with an audible warning when 5 minutes remain.

The time setting is the sum of the rotary switch and the minutes button.
Press the minutes button on the Control Unit until the +15 LED is lit.
Adjust the rotary switch to read 5 minutes.

Using the Warning Minutes button, set the warning time to 5 minutes. This gives a visual (LED) warning when 5 minutes remain. This can be accompanied by a beep at the Lectern and/or the Control Unit. The beep option is selected by the grey Local/Lectern warning beep buttons.

Press the Start/Stop button. All LEDs in the bar graph light up. The green LED immediately above the start button flashes 1 sec on 1 sec off to show that the unit is timing.

When 5 minutes (in this example) remain, the warning LED flashes accompanied by a beep if selected.

The bar graph keeps counting down.

When 20 minutes is reached, the time's up LED flashes, accompanied by a beep if selected.

The pause button. Press once to pause, press again to un-pause. A LED displays the pause status.

Start/Stop button stops the timer if it is running.

The lectern fault LED will light if the lectern unit becomes disconnected or there is a cable fault.

Interconnection

Uses readily available standard 3 pin XLR microphone cables.
Transformer balanced data for high noise immunity and maximum rejection of interference.
Designed to run in electrically hostile environments, such as venues with large quantities of light dimmers.
1km minimum cable length (dependent on cable characteristics, primarily DC resistance)
Will work with microphone leads wired incorrectly (i.e. pins 2 & 3 swapped).
Several levels of software error traps to prevent false commands in the event of cable faults or severe interference. Very tolerant of "crackly" leads.
Virtually immune to interference from mobile/cell phones.
Will run down an audio multicore.
The Control Unit is mains powered. The remote unit(s) are powered from the Control Unit via the same XLR cable that carries the data.

An XLR to RJ45 adaptor will allow the use of CAT5 cable as well as microphone cable.

Brochure

Download brochure for the Speaker's Timer.
Speaker's Timer (450Kb) in Adobe Acrobat format .

Download Adobe Acrobat Reader

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