HP 3314A Manual page 39

Model 3314A Performance Tests |
UNIVERSAL
COUNTER
FEEDTHRU
TERMINA TION
Figure 4-1. Frequency Accuracy Test
4-3. TIME AXIS AND VARIABLE SYMMETRY | C. Set the Counter as follows:
This is a test to check the Symmetry function of the Function ......................... Per Avg A
3314A. Кесон ле а 0.1kHz
НЕ Attenuation рл аа қы Y es а HS x10
Specification: Channel A Slope ......................... +
| Channel B бїоре.......................... _
(Both Channels)
50% 50% + 0.2% of period Channel Input ......................... Com
5% 5% + 0.5% of period
95% 95% + 0.5% of period D. Connect the 3314A to the Counter as shown in
Figure 4-2. |
Equipment Required: ;
E. Record the period of the 3314A Square Wave
Universal Counter signal (t) displayed on the Counter.
50 Ohm Feedthrough Termination
| F. Change the Counter function to "ТІ Avg А-В".
Procedures:
G. Record reading (t,).
A. Preset the 3314A.
H. Calculate the percent of symmetry using the
PICQUENCY u u Se een SO Ee 100kHz
Amplitude .......................... 10Vp-p
I. Adjust the symmetry on the 3314A to 5%, set the
Counter function back to Period Avg A, and repeat
steps E through H. |
Symmetry .......... "E Por 50%
J. Adjust the symmetry on the 3314А to 9595, set the
Counter function back to Period Avg A, and repeat
steps E through H.