Vaisala PTB330 - Manual (Page 120)

USER'S GUIDE____________________________________________________________________
118 _________________________________________________________________ M210855EN-D
Multipoint Adjustment Using Serial
Line
NOTE Making adjustments is possible only after adjustments have been
unlocked. To unlock the adjustments, press the ADJ button on the
motherboard of the transmitter.
MPCP1, MPCP2, MPCP3
Use the MPCP1, MPCP2, and MPCP3 commands:
- to view current multipoint adjustments for barometer
module/modules P1, P2, and P3
- to activate or deactivate the multipoint adjustment function
- to enter new multipoint pressure adjustments to the transmitter.
The commands operate like LCP1, LCP2, and LCP3, but can take up
to eight reading/reference pairs. If there are three pressure barometer
modules installed, the commands MPCP1, MPCP2, and MPCP3 are
available. When changing multipoint adjustments, remember to
disable all offset/linear adjustments as well.
NOTE Each barometer module has its own adjustment commands. You must
enter the multipoint adjustments for each barometer module
separately.
To enter new multipoint adjustments:
1. Enter the command MPCP1 ? (and MPCP2 ?, MPCP3 ?, if
applicable) to display current pressure adjustments.
2. Write down the current settings if you want to restore the old
values later on.
3. Enter the commands MPCP1 OFF (and MPCP2 OFF, MPCP3
OFF
, if applicable) and LCP1 OFF (and LCP2 OFF, LCP3
OFF , if applicable) to deactivate all adjustments.
4. Record the (up to eight points of) measurements in controlled
reference pressure conditions. Make note of P
1
P
2
, and P
3
separately, if applicable.
5. Enter the command MPCP1 (and MPCP2, MPCP3, if
applicable), and enter the new adjustments when prompted.