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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.
Information 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.
Rev. 1
HM210IT User's Manual
www.hohner.it
11
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