HP 5315 A User Manual

Mo del 53 1 5A / B
Operat i on
3-2
3-10. FREQ A
3 -11 . Fre quenc y measurements are made by connect ing a signal ( up to 1 00 MHz ) to INPUT A,
and pressi ng
the FREQ A function key (with the Blue sh ift key ou t). Select the appropriate inp ut
signal condi tion ing and adjust the LEVEl/ SENScont rol (with TRI GGER LEVEl/SENSIT IV ITY key to
TRIGGER L EVE L) to opt i mum trigger point. The opt i mum trigger poi nt may be deter min ed by
centering the LE V El /S ENS cont rol within the triggering range, indicated by the flashing trigger
light. The
GA TE TI M E con trol determin es the resolut ion of the measurem ent, and may be
displayed by p
ress ing the GATE TI ME func ti on key and Bl ue shift key.
3-12.
PER A
3 -1 3. The P er i od A mode allows si n gle per io d measurements to be made w it h periods of 105 s
to
10.0 nanoseconds in to IN PUT A. Select the approp riate input signal condit i on ing, and Trigger
l evel/Sensi
tiv ity.
3-14.
T. 1. A-B
3-15. T.I. A-B measures the time inter val be tw een a STA RT signal at INPUT Aa nd a STO P signal
at INPUT B. If b ot h the START and STOP signals are derived from the same sig nal, connect the
sig n al to INPUT A and set the SEP/COM A key to the COM A position (IN). Separate slope and
l evel/Sensitivity controls
for each channel all ow variable triggering on eit her positive or
negative going slope. A single-shot ti
me interval measurement may be made over a range of
100 ns up to 8 digits and 10
5
s after 9 digits.
3-16.
T.I. AVG A-B
3 -1 7. Th e T.I. Average mode pro vides greater resol ut ion of ti me interval m eas urement s than
s
in gle-s hot T.I. mo de prov ides. In the T.I. AVG mode, the gate t ime control varies the numb er of
even ts of time in ter va ls averaged (ap pro x im ately GA TE TI ME X REP R ATE ). The resol ut i on of the
measurement is improved by the IN , where N is the number of time intervals averaged.
A
lim ited range of negati ve T.I. measurements (Le., B triggers befo re A) are possi ble
in T.I. AVe mode.
3-18. In the T .1. Ave mode, there mu st be at least 2 00 ns de ad tim e. Dead ti me is th e ti me
between the pr eceding time interval stop event and the current time interval sta rt eve nt , as
shown in Figure 3 -1 . This means that in T. 1. AVG mode, t he repeti tion rate must be l ess than
5 M H z.
A - SLOPE
B + SLOPE
START
,
,
,
,
,
,
S TOP START
STO P
: T.1. MEASU RE D
OEAOTIME > 200
ns
Figure 3-1. n. Average Dead Time

HP 5315 A Specifications

General

Brand	HP
Model	5315 A
Category	Cash Counter
Language	English