Table of Contents
Advertisement
Determine the length of coax required to provide the
necessary delay (r). (Eight feet of BNC cable will
provide 12 ns of delay for this example.)
Determine the loss in the delay line. Verify that the
signal source will be able to provide a power level at the
output of the delay line of between +5 to +17 dBm. Be
sure to take into account an additional 4 to 6 dB of loss
in the power splitter. (The loss across the 8 feet of BNC
cable specified for this example is negligible.)
50
40
28
10
-10
-ee
-30
-40
-50
-SB
-70
-80
-90
-110
-120
-130
-140
-IS0
-188
-170
' \ " \ V
\ : \ \
\
V
' \ >
: \
\
:
:
:
:
:
:
:
:
:
:
:
:
r ir
,i
i i I T — i — I
■
•
^L /
^
, , i
, , , , i
, ,
' '
:
s :
$
s
s
-
\
\
1 1
i
'
V ?
t
1
3»
|
.
,
. . ;
i
i
. .
"N^sX^S*,
' ' ''! ' ' ''!
i
i i l l
i
i i i l
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
"
IB
Z
if)
100
IK
18K
( [Hz
Figure 3-26. Discriminator Noise
Floor as a Function of Delay Time.
Signal Source Applications
3-97
Advertisement
Table of Contents
