Setting To Zero The A/B Divider With Zero_A Signal; Informationen Over The Signal Change A/B Dir - Hohner IT 210 Operating Manual

Level converter, direction signal decoder and programmable pulse divider
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5.5. Setting to zero the A/B divider with ZERO_A Signal

If the DIL switch DIL1/8 is set to OFF, the divider is reset immediately and remains as
long as a high level at the ZERO_A control input is applied. The A/B pulse can be
trimmed by switching. A/B, 90 ° signals can cause illegal states when the ZERO_A is
switched on and off. In the case of A/B dir Signals, the reset is also done at the same
time.
If the DIL switch DIL1/8 is set to ON, the divider will be reset in the zero phase of the
output signals AOUT and BOUT and will remain as long as the signal is attached. This
prevents the miscounting of subsequent circuits. This function can only be applied to
A/B 90°, it is independent of the divider ratio.
If there is a high signal at ZERO_A the A/B divider is reset and has the starting state
AOUT = BOUT = Low. The divider is in a defined state. Depending on the direction of
the input signals, the next split A/B pulse appears immediately after the reset, or
after the set division ratio. The length of the ZERO_A pulse has to be greater than
the period of frequency, than it can be switched off. This feature can be used for
define start and stop.
The Z track can be set to zero with the ZERO_A input. The DIL switch DIL1/8 has been
set to ON, A/B 90 ° output signals have been selected and the Z Pulse length has
been synchronized to the output.

5.6. Informationen over the signal change A/B Dir

Signal changes from B (direction) should appear shortly before or latest at the same
time as the A flank so that the change can be detected correctly.
It210_01a_oi_e.docx / Jan-20
Page 14 / 21
www.hohner-elektrotechnik.de
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