OIL RIG MAY BE FITTED WITH RCR The RCR records up to 10 channels of voice using state-of-the-art technology, and provides the most advanced replay facilities you could expect. IN SERVICE OFFSHORE, WITH SHELL.

Speech is recorded digitally. Two plug-in recording cartridges are fitted, and each cartridge will hold about 200 hours of speech. This is continually upgraded.

The software upgrades are on PC software. The hardware needs no modification at all. The hardware consists of two 2U 19 inch rack units, which perform all the audio processing.

RCR unitControl of the system is by the PC keyboard and mouse. The track arrangement window and mix windows allow monitoring of the system. A "tape transport" toolbar gives control of the recording and playback function.

The removable storage cartridges are rugged lockable aluminium drawers which hold a hard disc drive. Back-up of the cartridge data may be to a PC back-up medium such as DAT or MO disc. It is easy to transfer a record from one site to another by DAT or disc where it may be re-loaded and replayed.

The system is capable of expansion to more channels in 8 channel increments by adding extra 2U units.

PC SCREEN DISPLAY Here is one of the PC screen displays. The monitor whilst-recording, and the replay facilities are so extensive that to describe them would overwhelm the simplicity of recording, so it is best to say: Q: will it ...........? A: yes.





10 XLR 3 pin SOCKETS
Balanced above ground, 25K impedance.
Or Phono unbalanced inputs as used by AMI.
Input level up to -10 dbV nominal. (18 db below clip level.)
Interfacing assumed fitted in radio/comms equipment to provide suitable signal levels.
Interfacing adapter PCBs available to assist connection. Levels, filtering & compression may be viewed and optimised via the PC.
Dynamic range 96 dB.
NB: See data sheet for AMI-GFV audio interfacing equipment. This is separate to the KW930 RCR, and may be customised for the client.
16 bit ADC. DSP at 11 kHz or higher for typical communications b/w.
Approximately 2.5 MB per track minute. (May change to 1.25 M +)
With 4.2 GB hard drive = 1680 track minutes. (To update to 3360+)
Two drives provided double the capacity. "Loop recording available."
Latest drives always used to maximise recording time.
10 analogue unbalanced via XLR connectors.
Level to + 4dbV.
2 of the outputs to feed amplifier loudspeakers.
All outputs can feed individual loudspeakers: optional)
Interface via plug-in expansion card fitted into thePC.
PC MUST be near the RCR units. 1.5 metre interconnecting cable.
Two 2U units x 425 mm deep.
All connectors on rear panel.
Black finish
The hard drive units are not recommended for use in places with high vibration or movement such as very small vessels.
110/220v 50/60Hz.
Status led arrays on panels.
Not tape.
No VOX operation.
Made locally. World wide support.
Very competitively priced.
Uses audio industry standard techniques. Compatible with video mixing systems.
Can interface directly with MIDI. (Replay in sync with video recording.)
For analysis of recorded data many hundreds of professional audio mixer companies are available to use the RCR.
Track selection
Selection of parts of record
Filtering, fading, normalise to 0 db, 999 time markers
Full editing, cut, repeat, copy, move, noise-gate
10% varispeed, fast forward, reverse, pause, back, scrub etc etc etc.
Basic operation requires computer literacy and use of Windows 95.
To use the editing and replay facilities fully, training courses are available.
For superb performance the following is suggested.
IBM PC Pentium 90+ 32M ram, 1G hard disk. CD ROM drive, SVGA 15"+, DAT or MO drive.
Window 95 or Windows NT.



It is necessary to "tap into" the audio circuits of many standard VHF (or other) transmitter receivers in order to get an output for the voice logger. In order to do this in a neat and professional way we have designed a radio interface pcb, which may be installed inside or outside a radio. (Some radios may provide suitable outputs already.)

The usual way is to fit the interface in-line with the handset. The diecast aluminium box (89 x 35 x 30 mm) could be fitted with the handset plug and socket obtainable from the radio manufacturers.

The radio interface provides a high impedance connection to the receive-audio, transmit-audio and a press-to-talk line. Two amplifier/attenuator circuits are provided. The gain/attenuation is set up according to the radio's characteristics, so it should be suitable for all normal equipment. A solid state switch selects transmit or receive audio output at the nominal level required for the voice logger.

The interfaces at the radios deliver a standard -10dbV signal to each of the RCR's inputs to allow the RCR to be intererchangeable from site to site. The system provides electrical isolation. We can not guarantee the standard interface will interface all radios, but blank PCBs can be provided to make up with modifications to suit other circumstances.

The individual radio interfaces feed (via a miniature screened cables) to a 2U rack unit mounted with the RCR. This is the Interfacing Terminal Equipment, acting in-part as a junction box, but it also contains the power sources for each interface.

AMI-GFV Marine supply and quote the basic interfaces with no handset connectors on. You will understand that the system engineering costs and time is a separate item entirely.


INPUTS: 220K ohm. 5 mV to 2 v.
Potentiometer level adjustment.
Connectors are lift-off terminal blocks.
PTT INPUT: Configured for typical pull-down to 0v common line.
Nominal 5 to 12v.
The interface connects via a diode and 22K to the supply.
AUDIO OUTPUT: Adjustable to nominal -10 dbV, 0.9v peak to peak, or other values.
POWER: Nominal 6v derived from the Interfacing Terminal Equipment
DIMENSIONS: 89 x 35 x 30 grey painted box
INPUTS: 10 inputs for 10 interfacing adapters
OUTPUTS: 10 outputs to the RCR equipment, on phono plugs.
POWER: 115/230 v nominal at <50VA
LOUDSPEAKERS: Contains two amplifiers & loudspeakers for monitoring RCR output.
SIZE: 2U x 250 mm depth

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