Chapter 8. Maintenance and Troubleshooting
Model PM880 Portable Hygrometer User’s Manual 143
8.8 Updating PM880 Software
As discussed in Chapter 7, Using the PM880 with a PC or Printer, the
PM880 uses an IR transceiver to transfer files. The IR function can also be
used to upgrade the meter’s user program. The software upgrade includes
the bootloader and instrument software, and the meter and Help string files.
Before you can upgrade the meter’s user program, you should print out or
download logs and other settings stored in the PM880’s memory.
IMPORTANT: To guard against mishap, you should print out, download or
otherwise record all logs, settings and other data you wish to
save.
Once you have backed up your data, refer to the section below to begin the
upgrading procedure.
8.8.1 Upgrading Requirements
To use your PC to download the new user program, your computer must
meet the following requirements.
8.8.1a Infrared Hardware
The PM880 is equipped with a built-in IR sensor. Your PC must have an
infrared sensor (built-in or external). If your PC does not have a built-in IR
sensor, you can purchase a compatible IR adapter. GE recommends the
ActiSys ACT-IR220L+ infrared to RS232 adapter.