HEIDENHAIN PWM 20 - Manual (Page 148)

November 2014 Checking incremental encoders 151
6.2.3 Description of the incremental signal display
Check functions
bar
Encoder
characteristics
Analog:  Oscilloscope function
 Position and frequency display
 Signal monitoring
 Bar graphs for parameters of incremental and reference signals
Recording:  Recording of several signal periods for signal analysis
 Diagram view of the recorded signal data; comparison of signal
amplitudes, on-to-off ratios and phase shifts
 Recorded signal data can be saved and exported; saved files can be
opened.
Counter:  Test of counting function by counter start/stop with ref. mark
PWT: Phase angle test function for simple testing of analog interfaces
(e.g. 11 µApp and 1 Vpp); bar graphs are displayed to evaluate signal
amplitudes, signal deviation and zero crossovers.
Note: The software reports problems such as:
 Excessive frequencies
 The displayed signal detail is too small to calculate the reference mark,
etc.
A yellow Attention symbol is displayed to the right of the Note button.
Position: Bidirectional counter (counting of signal periods)
Frequency: Current input frequency
Signal
monitoring: "Left" LED = Concurrent signal monitoring (red color only as long as
an error is present)"
Right“ LED = Signal monitoring is logged (display permanently red,
if an error was detected within the measuring range)