HEIDENHAIN PWM 8 Operating Instructions Manual page 9

c): Peak hold of the PHA/TV display:
The peak hold holds and displays the maximum positive and negative value of the PHA/TV error.
It can be deleted by selecting a MODE or if the measuring range is exceeded. With automatic switch-over of
the measuring range, peak hold is not active for PHA/TV display.
Manual start and stop of peak hold:
If the peak-hold display is to be valid only for a certain measuring range, it can be started and stopped by
hand. Manual operation is made by means of the MODE soft-key row:
Soft key for manual start of the peak-hold display in standard operation. The already existing
peak-hold display is deleted.
After pressing the START soft key the STOP soft key is displayed. If this soft key is pressed, the
peak-hold display is frozen and the bars of the PHA/TV display are hidden. Now the peak-hold
display can be read.
After pressing STOP, this soft key is displayed inverted which signals "frozen status". By pressing
the inverted soft key, the peak-hold display switches back to its initial status (standard operation).
d): Display field for PWM 8 MODE:
All MODES are displayed in the MODE window:
See section 4, Description of the PWM 8 MODES
Display of positive peak hold
Display of negative peak hold
Soft key for manual control of the peak-hold display
Headline MODE
(here additionally: edge evaluation of the
UNIVERSAL COUNTER))
Display field for the different MODES:
• UNIVERSAL COUNTER
• DETERMINE PULSE NUMBER
• MEASURE CURRENT/VOLTAGE
• MEASURE AMPLITUDES
- 9 -