for Ektapro Slide Projectors and "Power
The system consists of 5 units.
An easy to use remote control for 2 Kodak Ektapro projectors and 1 computer
running presentation software such as Microsoft's Power Point.
Very simple forward/back controls at the lectern.
Additional basic functions provided for the A/V operator.
Cable based for maximum reliability. No infrared or radio interference
and dropout problems. No flat batteries.
Uses common 3 pin XLR microphone cables for inter-connections. Will also
run on CAT5 computer cable.
Only one cable to the lectern for control of up to 3 devices.
1: Lectern Unit and remote control buttons.
2: One Projector Interface unit for each of two projectors.
3: Power Point computer interface.
4: A/V operator's Master Unit.
The 4 remote units.
Top row: Lectern unit and 3 remote control buttons.
Centre row: 2 projector Interface units.
Bottom Row: Power Point computer interface.
The remote units are interconnected by 1 cable that is looped from unit
to unit. They may also be star wired. Each remote unit also connects to
another peripheral such as a projector, lectern buttons or Power Point
Boxes are die cast aluminium and are powder coated in satin black.
The Lectern Unit comprises of an interface unit and between
1 and 3 lectern top buttons.
The lectern top buttons provide very simple forward/back control. No
KIS theory: Keep It Simple.
A button unit is used for each projector and a third for presentation
Each button unit has a LED that indicates when a forward or reverse
command has been received by the remote destination.
Holding a button down will only advance one slide. It doesn't autorepeat
inadvertently advance your whole slide show.
One, two or three buttons units may be connected to the Lectern Interface
Unit as required.
The button units connect via a 1 metre long cable and 6.5mm TRS connector.
The Lectern Interface unit mounts behind or under the lectern and includes
LED monitoring of cable connections.
Mounting bracket on the rear of the Lectern Interface Unit hooks over
the front panel of Lectrum brand lecterns.
This unit connects to a Kodak Ektapro projector's P-Bus serial port.
Connection is made using a short (1-3 metre) 9 pin D lead. These
are commonly sold as serial mice extension leads.
There are 2 status LEDs on the Interface Unit.
One monitors the cable connections on the 3 pin XLR network, and the
other monitors the serial connection to the projector.
Each of the two Projector Interface Units are marked Projector 1
and Projector 2 respectively and correspond with Slide 1
and Slide 2 Lectern buttons.
The address selection switch on the Ektapro projector may be set to
any position as it is not used.
Not all Kodak Ektapro projectors support all features.
For example, the 4010 & 4020 don't support Auto Focus on/off.
The 5020, 7010, 7020, 9010, 9020 models support all features required
by this system.
All models support the fundamental features such as slide forward/reverse,
manual focus in/out and "go to slide zero".
|Power Point Computer
Provides forward/back control for presentation software such as Microsoft's
A specially modified P/S2 keyboard connects between the 4 pin XLR connector
on the Power Point Interface Unit and the target computer's keyboard socket.
All keys on the keyboard are 100% functional and it may be used as
a regular keyboard. An optional USB keyboard is available which works with
either IBM or Mac computers.
The modified keyboard approach was decided upon, as it does not require
any additional software to be installed. It is independent of operating
system and software revisions. It is very hard for Bill Gates to stuff
up this interface :)
Modified keyboard showing additional LEDs and cable.
an inconveniently wide drawing of the front panel
Master Unit functions include:
Housed in an all metal 1U 19" rack case.
Go to slide zero
Lamp failure indication
Link both projectors for simultaneous slide forward/back. Individual control
for each projector is still available at the master unit.
Monitors the presence of Lectern and Projector Units as well as the projectors
Monitoring of interconnecting cables for shorts and opens.
Power supply for the entire system.
How the units are connected together.
The system will run with any of the various units omitted if they are not
required for a particular job. The only limitation is that the master unit
must be present as it contains the power supply and network control software.
Uses readily available standard 3 pin XLR microphone cables.
Transformer balanced for maximum interference rejection and high noise
Designed to run in electrically hostile environments, such as venues with
large quantities of light dimmers. 1km network length (dependant on cable
capacitance). No terminators required. Daisy-chain, star & tee wiring
Will work with microphone leads wired incorrectly (i.e. pins 2 & 3
Several levels of software error traps to prevent false commands in the
event of cable faults or severe interference. Very tolerant of "crackly"
Interface units can be wired up in any order anywhere on the network and
can be connected/disconnected while the network is live.
No limits on maximum or minimum cable segment lengths up to a maximum of
1km total length.
Virtually immune to interference from mobile/cell phones.
Will run down an audio multicore.
The Master Unit is mains powered. All of the remote units are powered from
the master unit via the same cable that carries the network data.
An XLR to RJ45 adaptor will allow the
use of CAT5 cable.
|| Download brochure for the Ektapro remote control system.
ektapro.pdf (313Kb) in Adobe Acrobat
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