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O/MODE
Appendix B Accessories|VFD-VL
Division factor
A leads B
B leads A
A
A
B
B
A/O-/A/O
A/O-/A/O
B/O-/B/O
B/O-/B/O
OA-GND
OA-GND
OB-GND
OB-GND
0
A
A
B
B
A/O-/A/O
1
A/O-/A/O
B/O-/B/O
B/O-/B/O
OA-GND
OA-GND
OB-GND
OB-GND
NOTE
„
„
When the switch is ON, it means logic 0.
A-/A and B-/B are the input signals of PG card. A/O-/A/O and B/O-/B/O are the line
driver outputs of the frequency divider measured by the differential probe.
„
Bit 0-4 are the denominators for the frequency divider. Bit 0 is the low bit (EX: the
setting of 10110 is that the input signal divides by 13).
„
When the output pulse type of frequency divider is set to 0, A/O-/A/O, B/O-/B/O, OAGND and OB-GND are the outputs of frequency divider.
„
When the output pulse type of frequency divider is set to 1, B/O-/B/O and OB-GND
are the indication of phase A and B. (EX: LOW means A leads B and HIGH means B
leads A). A/O-/A/O and OA-GND are the output of frequency dividers.
„
When changing the denominator of the frequency divider or output type, it needs to
clear the counter value by clock reset bit before operation.
B-37
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