Chapter 17 Television

Example 17.1 Page no 882

In [1]:
#given
bw=5*10**6            #bandwidth
t=53.5*10**-6         #time allocated for each visible trace

#calculation
T=2*bw*t              #increase in horizontal resolution

#result
print"Thus, the total number of vertical lines resolvable is ",T,"lines"

Thus, the total number of vertical lines resolvable is  535.0 lines

Example 17.2 Page no 822

In [2]:
#given
bw=5.0*10**6                    #bandwidth
l=428                           #horizontal resolution

#calculation
t=l/(bw*2)                      #trace time
x=1/30.0                        #time available for a full picture
y=t+10.0*10**-6                 #assuming that 10us is used for horizontal blanking
n=x/y                           #no. of horizontal traces
c=600*0.7                       #allowing 32 lines for vertical retrace

#result
print"vertical resolution = ",c,"lines"

vertical resolution =  420.0 lines