Digital Optical 16Tx 3Rx 2vXX

../../../_images/optical_16tx_v2_complete.jpg

Functionality

  • Transmits up to 16 optical signals, e.g. gate signals.

  • Receives up to 3 optical signals, e.g. error signals.

  • The signals are passed through the CPLD first. Here additional functionality can be implemented, e.g. checking for invalid switching combinations or introducing a dead time.

Before first use

Solder in up to

  • 16 optical transmitters: Broadcom HFBR-1521Z

  • 3 optical receiver: Broadcom HFBR-2521Z

Please refer to this page for detailed Soldering instructions of the receivers and transmitters.

../../../_images/optical_16tx_v2_transmitter.jpg

  • Solder resistors (R14, R19) on the bottom side to connect optical receivers

  • Program CPLDs with firmware, see Programming the CPLD for details

Known issues

Warning

When turning off the UltraZohm, the optical transmitters turn on shortly, solder in the pull down resistors to avoid this.

  • Solder pull down resistors, 2kOhm to each gate signal

../../../_images/optical_16tx_v2_pulldown.jpg ../../../_images/optical_16tx_v2_pulldown_schematic.jpg

Compatibility

Slots D1 to D4 can be used without limitations

Optical Cables

  • Optical Cables of type HFBR-RNSxxxZ are tested and recommended for transmitting the optical signals. The xxx determines the length of the cable in meters.

See also

Designed by

Thomas Kreppel (TUM), Eyke Liegmann (TUM) in 09/2019