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1002_0_Product_Manual - March 2, 2011 9:59 AM
Technical Section
General
Produces a voltage over -10V to +10V. This voltage will be asserted up to +-20mA (short-circuit). An error will be
reported when this current is exceeded, and the voltage the customer is getting is no longer accurate. The voltage is
produced with 12 bit resolution (4.8mV).
Isolation
The 1002 is not isolated. All 4 channels use the same ground.
Current
The PhidgetAnalog board will limit the available current per channel at approximately 20mA. For reliable results,
don’t approach this limit, as it will vary from channel to channel. For maximum accuracy, limit the current to 5mA. If
more than +- 20mA of current is drawn, the device goes into a constant current supply mode. When this happens,
the current will be held constant at it’s maximum value, and the output voltage will depend on the value of the load
that the device is trying to drive.
If your application requires a larger current source / sink, the analog output can be used as an input to a larger
external amplifier circuit.
All the power is supplied by the USB bus.
