Installation and Configuration
Ndrive FCL Hardware Manual
2.5. Position Synchronized Output (PSO) (TB101)
The Ndrive FCL includes a Position Synchronized Output (PSO) feature.
The PSO can be programmed to generate an output synchronized to the feedback position and is typically
used to fire a laser or sequence an external device. Trigger signals may be derived from a feedback channel
or a software trigger. The position synchronized output pulse is generated using high-speed hardware,
allowing minimal latency between the trigger condition and the output.
An RS-422 line receiver or opto-isolator is recommended, especially when using long cable lengths in noisy
environments or when high frequency pulse transmission is required. It is best to locate the line receiver or
opto-isolator close to the receiving electronics.
Table 2-12:
PSO Specifications
Specification
Value
Maximum Input Tracking Rate
(1)
Single-Axis Tracking
16.6 MHz
Dual-Axis Tracking
15 MHz
Maximum Quadrature Encoder Output
Frequency
-MXH Feedback
30 MHz
Maximum PSO Output (Fire) Frequency
(2)
with Differential Output
5 MHz
with Single-Ended Output
12.5 MHz
Firing Latency
Single-Axis Tracking
80 nsec
Dual-Axis Tracking
110 nsec
1.
Signals in excess of this rate will cause a loss of PSO accuracy.
2.
The optocoupler that you use on the output might have an effect on this rate.
Table 2-13:
PSO Pins on the TB101 A Connector
Pin
Description
In/Out/Bi
1
PSO Output -
Output
2
PSO
Output
Table 2-14:
PSO Pins on the TB101 B Connector
Pin
Description
In/Out/Bi
1
PSO Output
Output
28
Chapter 2
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