PAC1921 High-Side Current/Power Sensor Evaluation Board User’s Guide
DS50002376A-page 28
2015 Microchip Technology Inc.
When the evaluation board is connected or disconnected, a message displays as
shown in
. With the evaluation board connected, click
Auto-detect Address
to restart communications.
FIGURE 4-2:
Communications Failure Message.
4.1.1
Tips for Using the Evaluation Board GUI
• After a power-up of the evaluation board, the default settings are loaded. Users
can save the setting configurations to user-named files, which can be reloaded at
any time for quick reconfiguration (see
Section 4.3.3.1 “Configuration Save and
).
• To configure the GUI and PAC1921 for free-run integration power measurement,
press the <F2> function key on the keyboard.
• To reload the PAC1921 register defaults, press the <F6> function key on the
keyboard.
• When using the GUI, the PAC1921 can enter a Sleep state; however, it wakes to
service the GUI SMBus communications, then returns to Sleep. For this reason,
the current consumption will be slightly higher than expected in Sleep state when
using the GUI.
• When the PAC1921 enters Sleep state, the PAC1921 clears the measurement
registers, and consequently, the GUI
Calculations/File IO
tab is cleared. To
prevent the PAC1921 from entering Sleep, check the “SLEEP OVR” box in the
Main Configuration section.
