Fluke 5080A - Dds Pca (A6)

5080A
Service Manual
18
DDS PCA (A6)
The DDS (Direct Digital Synthesis) PCA (A6) has these functional blocks:
• References for all voltage and current functions
• Gain elements for voltage functions and thermocouple measurement and
sources
• An A/D (Analog-to-Digital) measurement system to monitor all functions
• Self-calibration circuitry
• Zero calibration circuitry
• Precision voltage channel DAC (VDAC)
• Precision current channel DAC (IDAC)
• Dual-channel DDS (Direct Digital Synthesizer)
These functional blocks, when used with the Voltage (A8) and/or Current (A7)
assemblies, supply:
• Single or dual channel ac and dc volts, amps, and watts
• Offsettable waveforms
• Internal calibration and diagnostics
• Digital control of all the analog assemblies
DACS are used to control the level of dc signals and to control the amplitude of
ac signals.