Tutorial 7
Keysight 34970A/34972A User’s Guide 335
Voltage (DAC) Output
The 34907A module has two analog outputs capable of outputting calibrated
voltages between ±12 volts with 16 bits of resolution. Each DAC
(Digital-to-Analog Converter) channel can be used as a programmable voltage
source for analog input to other devices.
– You can set the output voltage to any value between +12 VDC and -12 VDC, in
1 mV steps. Each DAC is earth referenced; it cannot float.
– Each DAC channel is capable of supplying 10 mA maximum current.
– To maintain the rated output accuracy, the load (R
L
in the diagram shown
above) must be greater than 1 kΩ.
Limit Switch
+5 V
Switch
Closed
Totalizer
Noise caused by bounce
creates a false count
16-Bit
Digital Data
DAC
Output Voltage
R
L
You must limit the output current to 40 mA total for all three slots (six DAC
channels).
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