95
n Minimum Pulse Width: 2.25 μsec
n Quadrature Counter: 32 bits signed
n Quadrature Modes: For variable resolution there are three count
modes for the Pulse/Quadrature input: X1: rising edges of signal A
are counted (increment); falling edges of signal A (decrement) X2:
rising and falling edges of signal A are counted X4: rising and
falling edges of signals A and B are counted
n Quadrature LEDs: Two LEDs indicate UP and DOWN direction of
counting.
Analog Output Module (4 Channels)
n 4 channel 0-21.8 mA, range selectable analog output
n Load resistance: 750 ohms maximum
n Accuracy: 0.1% full scale
n D/A resolution: 12 Bitsat reference conditions
n Modules per rack: 10 max, up to 12 with product ambient
temperature de-rating. See the figure below:
Figure 5-16: De-rating of AO modules
n Update rate: 500 ms
n Minimum current sensing: >3.5 mA per output
n Isolation:
l 500V DC channel to channel
l 600V DC isolation from logic
n Output Verification: Readback to controller that indicates output
current flowing.
n D/A resolution: 12 bits
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