PA1000 Power Analyzer
Version 1.3.14 Firmware Release Notes

===================
General Information
===================

Supported models
----------------
This firmware is intended for use on the following Tektronix product models:

PA1000

Installation instructions
-------------------------
Updating the instrument firmware requires the use of the Power Analyzer
Firmware Update Utility. Download the latest version of this utility from the
Tektronix web site before updating your firmware.

For detailed firmware installation instructions, refer to the "PA1000 firmware
update utility" topic in the "Software" section of the PA1000 Power Analyzer
User Manual (document number: 077-0912-xx). This manual is available online at
http://www.tektronix.com. If you decide to upgrade the firmware in your
instrument, follow the instructions in the manual.

Upgrade considerations
----------------------
The following tables lists the considerations that should be made when
deciding whether or not to upgrade your Power Analyzer firmware to version
1.3.14.

From version 1.0.0:
Recalibration required? No
Backward compatibility concerns? Yes(*1)
Requalification recommended? No
Should you upgrade? Review(*2)

From versions 1.1.6, 1.2.16:
Recalibration required? No
Backward compatibility concerns? No
Requalification recommended? No
Should you upgrade? Review(*2)

(*1) See the "Compatibility concerns" section of the Version 1.1.6 Release for
details.
(*2) Review the entire list of changes made in all firmware versions between
your current version and version 1.3.14. Upgrade if any of the fixes or
enhancements are desired.

======================
Version 1.3.14 Release
======================

Overview
--------
Version 1.3.14 is a feature enhancement release of the PA1000 firmware. This
release provides 3 enhancements and resolves a few noncritical issues.

Critical fixes
--------------
There were no critical fixes included in this release. See the "Enhancements"
and "Noncritical fixes" sections for more information about release content.

Enhancements
------------
E-1
Enhancement:
Support for IEC pre-compliance testing was added. This feature requires
the use of the PWRVIEW software.


E-2
Enhancement:
USB device (command interface) operation has been optimized. Response
messages are now returned considerably faster. This is especially true
with large response messages.


CR499051
Enhancement:
A 50 kHz low-pass digital filter selection has been added. The 50 kHz
filter can be selected by using the front panel or by using the parameter
value 2 with the :BDW command.

Noncritical fixes
-----------------
CR489316
Symptom:
When logging results to a USB memory stick, if too many harmonics are
enabled the instrument will fall behind and miss readings. When this
happens, missing results can be identified by gaps in the result numbers.

Resolution:
This issue has been corrected.


CR489343, CR496509, CR496671
Symptom:
Some configuration settings are not restored when the instrument is turned
off and back on again.

Resolution:
This issue has been corrected.


CR496247
Symptom:
Pressing the PRINT key causes the results to stop updating.

Resolution:
This issue has been corrected.


CR496509
Symptom:
Some configuration settings are not saved to user configurations.

Resolution:
This issue has been corrected.


CR496511
Symptom:
THD measurements fluctuate when averaging is enabled.

Resolution:
This issue has been corrected.


CR499755
Symptom:
THD results are not returned as invalid when the frequency cannot be
determined.

Resolution:
This issue has been corrected.


CR502705
Symptom:
On some PCs, performing a VISA read operation over USB when the instrument
has no response message will cause the PC to terminate the USB
communication with the instrument. Once the PC terminates USB
communication with the instrument, all VISA reads and writes with the
instrument are not performed by the PC. To restore USB communication with
the instrument, the USB cable must be unplugged and plugged back in, the
instrument rebooted, or the PC rebooted.

Workaround:
Only perform VISA reads after sending a query command that generates a
response message.

Resolution:
This issue has been corrected.

Known issues
------------
CR505018
Symptom:
Harmonic results are not blanked when the corresponding RMS value is low
enough to be blanked.

======================
Version 1.2.16 Release
======================

Overview
--------
Version 1.2.16 is an enhancement release of the PA1000 firmware. This release
provides three feature enhancements and resolves some minor issues with
instrument operational robustness and performance.

Critical fixes
--------------
There were no critical fixes included in this release. See the "Enhancements"
and "Noncritical fixes" sections for more information about release content.

Enhancements
------------
CR456850, CR464225
Enhancement:
The instrument now displays a popup message when loading or saving a
configuration is complete.


CR482878(A)
Enhancement:
To improve low-power accuracy, a manual zero offset feature has been
added. The following commands have been added to support manual zero:

- :SYST:MZERO?, Run and store a manual zero. The command returns a 1
if the manual-zero process ran successfully. It returns 0 if
unsuccessful.
- :SYST:MZERO:STATUS?, Check the manual-zero status. The query returns
a 1 if the manual-zero process ever ran successfully. It returns 0
if the manual-zero process was never successfully run.
- :SYST:MZERO:RESET, Zero all saved manual-zero values.


CR482878(B)
Enhancement:
To improve low-power accuracy, a 10 kHz low-pass digital filter feature
has been added. The filter can be enabled via the front panel or by
communication interface commands. The following commands control the
low-pass filter:

- :BDW , Set the bandwidth. Use 0 for to select
high bandwidth (the 10 kHz filter is disabled). Use 1 for
to enable the 10 kHz filter.
- :BDW?, Query the bandwidth setting.

=====================
Version 1.1.6 Release
=====================

Overview
--------
Version 1.1.6 is an enhancement release of the PA1000 firmware. This release
provides two enhancements and resolves one minor issue.

Compatibility concerns
----------------------
The values returned by the :FRF? query has changed. See the E-1 enhancement
below for details.

Critical fixes
--------------
There were no critical fixes included in this release. See the "Enhancements"
and "Noncritical fixes" sections for more information about release content.

Enhancements
------------
E-1
Enhancement:
The :FRF? query now additionally returns the number of parameters and the
number of results to be returned. The values returned are now consistent
with those returned from a Tektronix PA4000 Power Analyzer. For backward
compatibility with version 1.0.0 of the PA1000 firmware, use the
:FRF_LEGACY? query. That query command does not include the addition
values in the response message.


CR433545
Enhancement:
The :SYST:ONTIME? query was added. This query command returns the number
of seconds elapsed since the instrument was powered on.

Noncritical fixes
-----------------
CR459555
Symptom:
Ethernet IP addresses are reset when the instrument power is turned off
and back on again.

Resolution:
This issue has been corrected.