HEIDENHAIN ND 287 User Manual User Manual

Page 57

ND 287

I – 5 Ser

ies of measur

ements and statistical

ocess

ontr



Select the first soft-key page of the standard screen.



Press the START SPC soft key to start the SPC function. If the

START MEAS. SERIES soft key is displayed on the screen, press the

MEAS. SERIES [SPC] soft key to open the SERIES OF

MEASUREMENTS menu, and then press the MEAS. SERIES [SPC]

soft key to switch to the SPC mode (see "Switching between series

is shown on the left side of the message line, e.g. 1/5 51. x

is the number of the measurement that is currently being performed

for the current sample (the total number of measurements to be

performed for each sample is indicated in DATA PER SAMPLE), y is

the number of measured values per sample (indicated in DATA PER

SAMPLE), and z is the total number of measurements that have

been recorded so far (maximum of z = product of x multiplied by y).



You can switch to an analysis of the current SPC at any time by

pressing the SPC ANALYSIS soft key in order to analyze the



Press the DELETE MEAS. VALUE soft key to delete the measured

value that was last recorded. Press the ENTER key to confirm, or

press the C key to cancel.



You can stop the current statistical process control at any time by

pressing the STOP SPC key, and you can restart it at a later time.

All parameters required for statistical process control and the

possibility of analyzing a previously recorded SPC are provided by the

SPC menu.

Fig. I.64 Standard screen with soft-key page 1

Fig. I.65 SPC has been started

The ND 287 generates a message once the complete

number of samples entered has been reached for the first

time. If you continue recording measured values, the

measured values of the oldest samples will be

overwritten (FIFO principle).

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