Automatic Generation Of A Z Pulse; Reset The Z Divider With Zero_Z Signal; Error Output - Hohner HM210IT Manual

6.5 Automatic generation of a Z pulse

If the DIL switch DIL2/1 is set to ON, a Z pulse can be automatically generated.
The Z input is ineffective and does not need to be connected (Z divider not completely set
on OFF).
DIL1 Front
8-pole
4 5
OFF ON The Z pulse is generated from the input signal A/B. Each input period generates one count for the Z
divider.
The Z pulse width at the output corresponds to 1/4 period of the pulse width of the input signal A/B
(Only applicable to input signals A/B 90°, DIL1/6 = OFF).
ON OFF The Z pulse is generated from the output signal A/B. Each output period generates one count for
the Z divider.
The Z pulse width at the output corresponds to 1/4 period of the pulse width of the output signal
A/B (Only applicable to output signals A/B 90°, DIL1/7 = OFF).
6.6

Reset the Z divider with ZERO_Z Signal

The Z divider can be reset by applying a high signal to the control input ZERO_Z.
The reset will act immediately and as long as the signal is applied.
Depending on the direction of the A/B track, the next Z pulse appears immediately after
the reset or according to the set division ratio (not at the independent Z divider).
The reset of the Z divider can also be performed in case of automatic generation of the Z
pulse.
By setting the Z-divider = all OFF, the setting of the ZERO_Z input causes an immediate
zero setting of the output ZOUT (see level conversion Z pulse).
Note the special case in which the ZERO_A signal can also set the Z output to zero (see
Setting to zero of the A/B divider with ZERO_A signal)

7 Error Output

An HTL error signal is available on the X3 screw terminal 1. (Error = Low).
The error (short circuit or line break) is triggered by the input lines A, /A, B, /B or Z, /Z (Test
mode OFF, DIL2/2 = OFF). The corresponding channel can be selected with the DIL switch
DIL3 (right, 3-pole).
If the DIL switch DIL3/1 is set to OFF, no errors are evaluated on the A, /A line, the DIL
switch DIL3/2 refers to the line B, /B and the DIL switch DIL3/3 to the line Z, /Z.
An error can only be detected in RS-422 or HTL differential format, all other formats do not
trigger an error.
Rev. 1
Narrow Z puls e (1/4 output- or input-period)
HM210IT User's Manual
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