Vaisala Calibration of Digital Transmitters with HMI41 - Manual (Page 12)

User's Guide ______________________________________________________________________
10 __________________________________________________________________ M210777EN-B
These are also the factory settings of the HMP230 series. If the values
on the HMI41 display do not correspond to those of the HMP230
series transmitter, change them with buttons ▲ and ▼ until they are
correct, press ENTER and then ON/OFF. With the HMT100 and
HMT330, use N, 8, 1:
N = none parity
8 = data bits
1 = stop bits
These selections are stored in the HMI41 memory; when HMI41 is
turned on again, it will automatically wake up as a calibrator for
digital transmitters with these line settings. If you wish to calibrate
transmitters with different settings, or use HMI41 as an indicator or as
a calibrator for some other transmitter type, these selections have to be
made accordingly; refer to corresponding manuals for further details.