Ballantine 3207, Instruction Manual

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CERTIFICATION
Ballantine Laboratories, Inc. certifies that this equipment meets all
applicable Ballantine specifications at time of shipment from the
factory as determined by thorough testing and inspection. Ballantine
further certifies that its measurements are traceable to the United
States National Institute of Standards and Technology. All
instruments used in calibrating Ballantine products are standardized
by systematic reference to NIST-traceable standards.
REFERENCE STANDARDS
DC 10mV-750V 0.002%-0.003%
20Hz-50kHz 0.5V-500V 0.004%
20Hz-10MHz 0.5V-100V 0.05%
DC-30MHz 0.5V-100V 0.35%
DC-700MHZ 10uV-0.5V 1%-NIST
10MHz-1000MHz 1V-300V 1%-NIST
Ballantine's Quality Assurance program satisfies the requirements of MIL-I-45208
WORKING STANDARDS
STANDARD RESISTORS, BALLANTINE 1380A
THERMAL VOLTAGE CONVERTERS, BALLANTINE 1394A
TRANSFER STANDARD, BALLANTINE 1605A
MICROPOTENTIOMETERS, BALLANTINE 440
RATIO TRANSFORMERS, GERTSCH