Hardware Revision Descriptions
Order Number Descriptions
Updated: 29 December 2021

General Description
DSI3 Bus Master,  two channels.
PSI5 Bus Master, two channels.
Communication to client computer: Ethernet.

Hardware Configuration
Only one configuration option is available.
It is the AVT-440-006.
This includes the AVT-440 custom PC board housed in the Netburner PK70 unit configured with the latest AVT-440 firmware.

PC Board Revision

PC Board Revision Notes

The revision of the PC board is noted in copper on the bottom of the board.
It only changes when the board is redesigned.
The "as built" revision is noted in the white "rev" block on the top of the board.

PC Board Revision A

October 2018.
Original board design.
eased for production as no changes were required.

PC Board Revision B1
19 July 2019
Added PSI5 transceiver device and related circuitry.
Removed the MOSFET switch for the VDSI bus supply to the DSI3 Bus Master device.

PC Board Revision B2
~ 1 August 2019
A hand modification to the original rev. "B" board.

Remove pin # 21 from J1.  This disconnects CPU signal PCS1 from the PSI5 transceiver TRIG input.
Install a small wire from J1 pin # 25 (signal PFECI2C0) to the hole on the PC board for J1 pin # 21.  This connects CPU signal PFECI2C0 to PSI5 transceiver TRIG input.

PC Board Revision C1
31 August 2019
Correct the signal change described above.

This results in the removal of wire via 8 (WV8).
No modifications to the board.
PC Board Revision C2
10 November 2019
Hand modified the board to work with the external AVT-441 "DSI3 Boost" board.

Refer to the modification document for details.  (Request a copy from the factory.)

PC Board Revision D
~5 December 2021.
Changed the 4 MHz clock device. I need to build a batch of boards. At present there are terrible shortages of electronic components. I could not procure the original clock device, so I changed the board layout. The new clock device is slightly smaller and uses (what I hope) is a more standard footprint.
Also included in this revision are changes to the board to incorporate the hand modification changes to "C2" needed for the AVT-441 "Boost Device".

PC Board Revision xxx
dd mmm yyyy.

PC Board Revision xxx
dd mmm yyyy.

PC Board Revision xxx
dd mmm yyyy.

Order Number Descriptions

AVT-440-006 : Custom AVT-440 board, installed in Netburner PK70 unit.
Status: Not normally a stock item.  Lead time approximately 3 weeks (depending on many factors).
Contact factory for current lead time.


AVT-440 rev A board only
AVT-440 rev. "A1" board only, top.

 AVT-440 rev. B board only
AVT-440 rev. "B2" board only, top.

AVT-440 rev. B2 in PK70
AVT-440 rev. "B2" Board Mounted in PK70.

AVT-440 rev C1
AVT-440 rev. "C1" board only, top.

AVT-440 rev. C2
AVT-440 rev. "C2" board only, top.

AVT-440 rev. C2
0 rev. "C2" board only, bottom.  Modifications shown.

Site Map