Model 250S1G6
36
Rev D
4.
If the gain is 5dB or more below the typical response, do the following:
•
Disconnect the coaxial cable from the input of the A4 Quad Amp, and note the results.
•
Reconnect the coaxial cable from the input of A4and disconnect the coaxial cable from the input of
the A5 Quad Amp; the results should be similar. If not, check the side that made the least difference.
Check the Four-Way Splitter, the Quad Amp, and so forth. Repeat for A6 and A7.
5.
A typical Four-Way Splitter Insertion Loss is shown in Figure 4-5
.
The unused port must be terminated
when checking the insertion loss.
-30
-20
-10
0
10
20
30
40
50
-9.5
-9.0
-8.5
-8.0
-7.5
-7.0
-6.5
-6.0
-5.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Re
tu
rn
Lo
ss
(d
B)
In
se
rt
io
n L
os
s (
dB
)
Frequency (GHz)
IL J4
IL J3
IL J2
IL J1
RL J5
Figure 4-5. Typical Four-Way Splitter Insertion Loss
