Data Device Corporation
SB-36230KX Manual
Rev G – 4/19
13
4
DETAILED ARCHITECTURE
4.1 Digital to Synchro / Resolver Channels
4.1.1
Synchro / Resolver Interface
Each output channel can be configured through software to provide the following
different signal types:
1. Synchro (S1, S2, S3)
2. Differential Resolver (S1, S2, S3, S4)
3. Single-ended Resolver (S2 - Cos, S3 - Sin)
Unused output legs are inactive (i.e., in Synchro mode, the “S4” output leg is turned
off). The signal type is not configurable for the 90V Synchro output option (
SB-
36232KX
). Refer to the
Set_D2rsChOutput()
function for more details.
Note: For the
SB-36232KX
option, the output type is configured for Differential
Resolver (S1-S4) and is converted to a Synchro output using a Scott-T transformer.
Therefore, the S4 output leg will be active.
4.1.1.1 Output Status
The active status of each specific output leg (S1-S4) for all channels is constantly
monitored in an internal register that is accessible through software. This status is
dependent on both the output type mode and if the output leg is in an over-
temperature/over-current condition.
For example, if the output type selected is Synchro, S1-S3 should be active while S4
is inactive. If an over-temperature/over-current condition occurs on S1-S3, the leg(s)
will go inactive. The leg(s) will become active again once the fault condition no longer
exists.
See the
Get_D2rsOutputsStatus()
function for details.
4.1.2
Synchro / Resolver Output Signal Voltages
The output voltage for each channel is determined by the reference input voltage and
transformation ratio. The transformation ratio is software programmable. See Table 3
for the different output voltage configurations. The output voltage configuration is
programmable using the
Set_D2rsChOutput()
function.
