PDA-600 Firmware Change Notes

PDA-602B / PDA-604A

version 2.08 published 10/7/2021

Extended transient_cmd to support the new finite length transient trace.
Extended period timer and A/D ISRs to support the new finite length
transient trace. Modified holdoff management in 4 pair trace mode to
provide the same 1:1 sample relationship as a 2 pair trace.

version 2.07 published 3/5/2020

Modified internal relay management to address a new requirement to control
non-latching relays (added at a critical path to reduce vulnerabilty when
a DUT using a certain FET bridge is connected when the instrument is powered
on, after being powered off in the middle of an Rdet margin or Cdet
measurement).

Changed the control pattern used when connecting the constant current source
to the PI, to further reduce the voltage that can be present due to stored
charge.

version 2.06 published 9/10/2019

Corrected an issue with max current available when using a slow slew rate
voltage turn on while the instrument is configured for 4-pair operation.
Full current was available on Alt A, but only 50% on Alt B. (only affected
class 8 device testing)

Added use of onboard loads to bleed the PI down below 2.8VDC to ensure that
the PD has performed a class reset prior to starting the Rdet margin
measurement. Corrected a timing issue discovered with certain instruments
where an A/D was taking longer than expected to complete a measurement,
causing an error and a -1 Rdet margin value to be reported.

version 2.05 published 3/05/2019

Modified MeasClass to assert Vmark for 1 event class (corrects behavior to
faithfully implement the Type3/4 PSE state diagram (CLASS_EV1_LCE to
MARK_EV_LAST).

Corrected sample alignment issue discovered with transient triggered trace
when instrument configured for 4 pair operation.

version 2.04 published 10/17/2018

Changed front end configuration management when performing Rdet unpwr
to prevent an issue that was discovered when instrument used with PDs
with certain MOSFET bridge implementations, where a relay was potentially
exposed to currents well above rated limit.

version 2.03 published 9/07/2018

Added missing average calculation in parallel detection code block (only
used when a Dual sig discovered).

Corrected LOW to HIGH range change in StimulusTask for ramp.

version 2.02 published 2/02/2018

Added initial support for 4 pair operation (meters, source control).

version 2.01 not published

version 2.00 published 10/25/2017

Initial Release supporting HW version 2 boards.

PDA-602A

version 1.09 published 19/17/2018

Changed front end configuration management when performing Rdet unpwr
to prevent an issue that was discovered when instrument used with PDs
with certain MOSFET bridge implementations, where a relay was potentially
exposed to currents well above rated limit.

version 1.08 not published

Corrected LOW to HIGH range change in StimulusTask for ramp. Removed
unecessary delay from MeasClass for non-default mark2 width.

version 1.07 published 9/22/2017

Added state in MeasClass to ensure that Vport < Vreset_th min for > 15ms
under all load conditions (down to min Imark), with VSENSE connected.

version 1.06 published 5/18/2017

Modified source STIMULUS_TURN_VPORT_ON case to maintain Vclass as power is
turned on for 1 event class, delay = 0 settings (prevent a voltage dip that
caused some 802.3at PD controllers to incorrectly latch a falling edge).

version 1.05 published 9/09/2016

Additional extensions to trace meter ISR to support trigger on a current
level, implemented a circular buffer sample accumulator (implementation
of transient triggered trace meter).

version 1.04 not published

version 1.03 published 6/13/2016

Added support for defining different dwell times for voltage ramp.

version 1.02 published 2/08/2016

Corrected data pattern dependent error in the 0.2ms period setting.

version 1.01 published 2/26/2016

Added composite query that returns multiple instrument settings in a single
query reponse (support GUI update speed improvement).

version 1.00 published 2/22/2016

Initial Release.