Philips PM 6667 Manuel D'instructions page 39

I
i
'in
I
Main gate control
Input signal (f)
To decimal counting unit
Figure 10.1.
t
'in
>0
Measuring time
I
f
I
Gate control and ready signal
I
Figure 10.2.
x-tal
osc
Time base
divider
Display &
driver
x-tal
osc
10MHz
Synchro ­
nizer
&
Gate
control
To event counter
10 MHz clock
To time counter
Measuring time
E vent
counter
-------- Ready -
J Time
counter
Mam gate
! Mam gate control
Display
& driver
Decimal
counting unit
10 MHz
'displayed = counts
Time counts x 10"'