D E T A I L E D A R C H I T E C T U R E
Data Device Corporation
SB-3624XIX-3L0 Manual
www.ddc-web.com
Rev D -10/15
45
Figure 39. Angular Position Screen - One Speed
Table 9. Angular Position Screen
DISPLAY OPTION
EFFECT
Visual Display Channel
Defines which channel is displayed on the Analog and Binary Displays.
Constant Read
Constantly updates all channels.
Card Speed Algorithm
Selects either One-Speed or Two-Speed input mode.
Inhibit
Inhibits the output display.
Turns Count*
Displays the turns count status for each channel. Reset will reset each individual
channel’s turn count to zero. (*See NOTE)
Direction
Displays the direction of rotation. Up is counterclockwise (angle increasing), Down is
clockwise (angle decreasing).
BITE
Reads the status of the BIT output of the R/D converter. The reasons a fault may be
indicated in a R/D converter are as follows:
1. The synchro or resolver signals have fallen below the specified voltage amplitude or
there are no analog input signals connected to the R/D converter.
Note: Both SIN and COS signals of the R/D converter must fall below 0.5 Vrms, or else
the BIT may only indicate a fault at certain angles.
2. The synchro or resolver is moving at a rate greater than the R/D converter can
accommodate. The dynamic capability of the R/D converter is determined by the
bandwidth selection and the resolution (refer to hardware setup).
3. If the error exceeds approximately 100 LSB’s. This condition will occur during a large
step and reset after the converter settles out.
* Note:
The Encoder must be enabled for the turns counter and the direction to work properly for both the DOS
console and the Windows GUI. Encoder (A quad B) resolution must be of equal or lesser value than the
resolution set on the card. For example, if the resolution set on the card is 14 bits, the A quad B
resolution must be set to 14 bits or less (not 16 bits).
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