Page 501 - Instrumentation Reference Book 3E
P. 501
484 Electrical measurements
n
Display
Input A Input and
-t- trigger
circuitry
-
Gate Counter
- 4
Input B Input and
b. trigger
circuitry
Start pulse (channel A)
n
Stop pulse (channel B)
Gate T
clock
(a I
U
Display
fA Input and Counter
-b- trigger * Gate nc counts
L
circuitry in gate
- .I period
1L
Input Channel B
f, Input and
-b- trigger Gate
circuitry
1
Frequency A
frequency
'A (b)
Figure 20.77 (a) Single-shot time-interval measurement; (b) frequency ratio measurement.
