ADVANCED VEHICLE TECHNOLOGIES, Inc.
AVT-512 Hardware Revision Descriptions
Updated: 24 March 2007

Revision A1
Limited release: 1 February, 2001
PC board revision "A". U23 Zinger IC is not installed. F5 +5v supply PTC fuse is not installed. Modified front panel LEDs are installed.

Revision A2
Limited release: 1 February, 2001
PC board revision "A". U23 Zinger IC is installed (modified installation). F5 +5v supply PTC fuse is not installed. Modified front panel LEDs are installed.

Revision B
General release: 7 June 2001
PC board revision "B".
Electrical design and board layout completely re-done.
Full electrical isolation between external networks and the host system.
Use the HBCC device for J1850 - PWM message level interface.

Revision C
Limited release: 1 December 2004
(Not sure how many, if any, of these were delivered.)
This revision uses PC board revision "B".
Modify the board to permit using an external K-line supply of +32 vdc.
Remove D27 to disable the input overvoltage protection circuit.
Remove D2 to disconnect and disable the UBP and LIN transceiver.
Replace R135 with a 10 Kohm resistor (SMT-0805 size).
Replace CAN transceiver U60 with a Philips PCA82C251 transceiver.

Revision C1
Limited release: 19 April 2006
(Only delivered qty. 3 of these.)
This revision uses PC board revision "B".
Modify the board to permit using an external K-line supply of +32 vdc.
Remove D27 to disable the input overvoltage protection circuit.
Remove D2 to disconnect and disable the UBP and LIN transceiver.
Replace R135 with a 10 Kohm resistor (SMT-0805 size).
Replace F4 with a 750 mA fast blow fuse (SMT-1206 size).

Revision C2
Limited release: 20 April 2006
This revision uses PC board revision "C".
Modify the board to permit using an external K-line supply of +32 vdc.
Remove D27 to disable the input overvoltage protection circuit.
Remove D2 to disconnect and disable the UBP and LIN transceiver.
Replace R135 with a 10 Kohm resistor (SMT-0805 size).
Replace F4 with a 750 mA fast blow fuse (SMT-1206 size).
CAN transceiver has been changed to a Philips TJA1050 device.
Remove resistor R95.



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