C-COR Flex Max901e Equipment Manual page 86

Figure 6.2
Simplified Return
Path Block Diagram
6
6-6 Flex Max901e 1GHz Trunk and Bridger Amplifiers
Note The Operational Gain listed on a C-COR Amplifier Specification Sheet is the gain
at the high bandedge frequency and includes 1.0 dB of loss for the return equalizer.
4. Calculate the true return amplifier gain by subtracting the input signal level (set in Step 2)
from the output level measured at the PORT 1 REV O/P TP. The difference should equal
the operational gain of the amplifier (at the balancing carrier) minus insertion losses from
accessories installed in the return path. Refer to When the Equalization Value is Known on
page D-1 to determine insertion losses at the high carrier frequency. Replace the RF module
if the amplifier gain measured at any port is out of tolerance.
5. Repeat this procedure for all active return ports.
REV STATION
EQ REV PAD
Port 1
PORT 2/3
FWD
O/P TP
Ports
2 and 3
PORT 2/3
REV
I/P TP
PORT 4
FWD O/P
TP
H
L
PORT 5/6
PORT 4
FWD O/P
REV I/P
TP
H H
L L
PORT 5/6
REV I/P
TP
Port 4
TP
Ports
5 and 6
1502154 Rev D