HP 5315 A - Page 38

Model 53 15 A/B
Operation
3- 20
NOTE
For specificati ons concerning ban dwidth, accuracy. and amplitude on
input signals. r efer to Table 1-1 .
1. Set POWER sw it ch 0 to t he O N position .
2. Set SE P/ COM A swit ch" to SEP pos ition.
3. Conned the input signa ls to IN P UT A • and INPUT B G. Co nn ect ing the higher fre quen cy
signal to INPUT A wi ll p rodu ct a ratio d"fs"p l ay greater than 1, connect ing the lower freque ncy
signal to INPUT A will produce a ra tio disp la y grea ter than 1. The best resolut ion is achieved wi th
the higher freque ncy into Channel A.
4. Press RA T IO A/ SO , and insure t he Blue shi ft key eiS in the ou t posi ti on
5. Set AC / DC ... ' An N., crt, and Slope •• swit ch es to des i red positi ons.
6. Set TRIGG ER LE VEL / SENS I TIVITY switches ... to S EN SI TI V IT Y positi on and LEVEUSENS
con tr ols. ., fully ccw. Th is sets the trigger level at B volts (nomina ll y) an d sen si t ivi ty to
minimum (>500 mV ).
7. Adjust each LEVEL / SENS control •• in a clockwise directi on sl ightly b eyo nd the po int the
co rr esponding trigger li gh t flas hes . If s ig na ls are less th an 250 mV rm s, the sensitivity
control s may be fully cwo
6. Adjust the GA TE TIME control. for d esired reso l utio n. The selecte d gate t ime , va riable
nom inally from 50 ms to 10 s, may be displayed by pressing the GA TE TIME switc h. and the
Blu e shift ke y e .
Figure 3-15. Ratio A/B Measuremen/5