forum.heinrichsweikamp.com

Hello,

can you tell me if a reference implemtation for the fibreoptic sensor port is available incl the software protokoll?

regards
Thomas

Hi Thomas,

heinrichs weikamp HUD data output:

Hardware details of IR Link:
- data rate is 2400 Baud, 8 Databits, 1 Stopbit, no parity, (2400, N, 8, 1)
- Carrier frequency is 38kHz
- 16bit values are transmitted in little Endian format (LOW:HIGH)

Software:

1. Output from HUD (Frame is updated and send every second):
- Total of 15Bytes (~53ms frame length)

Byte 0: 8bit HUD firmware version number
Byte 1: 8bit Status Byte
Byte 2-3: 16bit Sensor1 voltage (in 100µV steps)
Byte 4-5: 16bit Sensor2 voltage (in 100µV steps)
Byte 6-7: 16bit Sensor3 voltage (in 100µV steps)
Byte 8: 8bit Sensor1 ppO2 (in 0.01bar steps)
Byte 9: 8bit Sensor2 ppO2 (in 0.01bar steps)
Byte 10: 8bit Sensor3 ppO2 (in 0.01bar steps)
Byte 11-12: 16bit HUD Battery voltage in mV
Byte 13-14: 16bit Checksum


Status Byte/
Bit0 = 1 -> HUD connection ok
Bit1 = 1 -> HUD is calibrated
Bit2 = 1 -> HUD Battery is low ( Sensor 1 active
Bit4 = 1 -> Sensor 2 active
Bit5 = 1 -> Sensor 3 active
Bit6 = 1 -> HUD calibrated through external interface (DR5)
Bit7 = 1 -> HUD received (valid) data through RS232 input from DR5. Automatically cleared when command was executed

Cheers,
Matthias

A further question, what's the couple on the end of the cable, I have a usage that needs a shorter cable, I can get the cable but my search skills are failing me on the screw connectors.

The connector is specially designed from us. You can get it from us only.

Regards,
Matthias

Thanks, is it there a way to order custom lengths? Subject to testing I will need something circa 80CM.

Hi,

Sure, contact us directly: info@heinrichsweikamp.com

Next week is the "boot" dive show. Most of us will be there, so any custom orders will take some time...

regards,
Matthias

Hi HW, regarding the fibre port on OSTC3, is there any chance you guys could build, or are already planning to build an air-pressure gauge that goes on normal OC air tanks to get on-screen how much air i have left in bar? It would have to be a second battery powered device connecting to a HP valve on the 1st stage and sending this information through a fibre optic cable to the computor.

Possible or am i just dreaming?

Best Regards, Tommy

Hi,

Sorry for the delay here. No such a device is currently not planed (But technically possible).

regards,
Matthias