4. The ATS employs the same thermoelement and coaxial attenuators for sensing both
the applied AC signal and the internally developed balancing voltage, thereby
eliminating problems due to mismatch.
Both the attenuators and the thermally
lagged thermoelement are housed in compartments of an easily removable transfer
assembly (Model 11600A - see fig 3-2). Removal of the transfer assembly from the
Model 1600A mainframe permits its use as a conventional AC/DC transfer standard and
also permits its shipment to IBS for reports on AC/DC differences with an
uncertainty of less than 0.005 percent (to 20 kHz) and 0.01 percent (up to 50 kHz).
Figure 3-2.
Model 11600A Transfer Assembly
41
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