103
Step 3:
Connect sound level meter and computer
according to the prompt. Note that sound level
meter needs external power supply. If driver is
working properly, it will automatically select
Port
of
CP210x. The default value of
Baudrate
is 115200,
which relate to the computer. Higher
Baudrate
can
fast the update procedure.
Step 4:
first press the button located on the top
right corner
to select firmware, and then
press
Update
button to start. The whole procedure
need 3~4 minutes.
☆
Note:
Reset to factory settings and run
calibration at least one time after firmware update,
otherwise sound level meter may note work
properly. If always display “Time Out!”, remove MicroSD card and try again.
There is no limitation for firmware to upgrade or downgrade, so user can update to any
version. Hence, we advise to keep the latest version of firmware. Please no hesitate to
contact us by phone call or e-mail to request support for any issue or bugs of firmware.
☆
Note:
Firmware update is a feature only available for new sound level meter with HWID:
P0274 or above. The old type of HWID: P0115 cannot update firmware by user. Following list
the difference between old type and new type:
In
About
page, P0115 displays type
PCE-428/430/432
, while P0274 displays type 308S/309S.
RS-232 port of P0115 using Lemo 3-pin socket, while P0274 using PS/2 6-pin socket.
P0115 USB port is unavailable in function, while P0274 USB function is available.
P0115 has two measurement ranges: High and Low, some early product also has Auto
range, while P0274 has only one range.
6.5 Warranty
3&(,QVWUXPHQWV
can provide warranty service during the warranty period. The component could be
replaced according to the determination of
3&(,QVWUXPHQWV
to solve the issue caused by materials,
design or manufacture.
PCE-428 / 430 / 432