TEN CHANNEL RADIO COMMUNICATIONS RECORDER. KW930
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.
Control 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.
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.
|HOUSINGS AND MECHANICAL FEATURES:
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.
|INTERFACING TERMINAL EQUIPMENT
Open web site at the start.