Amplitude Accuracy - HP 3314A Manual

Model 3314A
Performance Tests
UNIVERSAL
COUNTER
50 OHM
FEEDTHRU
TERMINATION `
50 OHM
FEEDTHRU
TERMINATION
SYNTHESIZER/
FUNCTION GENERATOR
Figure 4-12. Phase Locked Loop Phase Accuracy
H. The accuracy of the phase setting displayed on the
3314A can be determined by the following equation:
Ф = (t,/t)360°
where t is the period of the 50Hz Synthesizer/Function
Generator signal (constant throughout the test), and t,
is the change in time between the trailing edges of the
phase locked signals (varies with phase setting).
I. Repeat step H for phase settings on the 3314A of
~ 90°, 0°, +90°, and + 199,9? noting that each phase
setting will have a corresponding value of t, to be
entered into the above equation.
NOTE
The data taken above can be entered into the
Performance Test Record for permanent
reference and comparison.
NOTE
This test always results in positive phases.
Subtract 360? from the measured results to
obtain negative phase shifts.
4-13. AMPLITUDE ACCURACY
This test determines the amplitude accuracy of the
3314A's Sine, Square, and Triangle wave signals.
Specifications:
Sine/Square +1% of setting +35mV
Triangle +1% of setting +60mV
Equipment Required:
AC/DC Digital Voltmeter
50 Ohm Feedthrough Termination
4-15